{"title":"ECG","description":"\u003cp\u003eECG cross-reference replacement semiconductors — house-numbered transistors and related devices used to replace original parts in legacy consumer, audio and industrial electronics. ECG-numbered devices are long discontinued, so remaining supply is new old stock and surplus. Many ECG numbers correspond directly to NTE equivalents. Always confirm the original device's ratings, package and pinout before substituting. Fast shipping from American Industrial Parts Group.\u003c\/p\u003e","products":[{"product_id":"ecg-ecg199-npn-silicon-low-noise-high-gain-transistor-to-92-nos-vintage","title":"ECG199 NTE199 NPN Low Noise High Gain Transistor TO-92 50V NOS","description":"ITEM SPECIFICS\u003cbr\u003eBrand: ECG\u003cbr\u003eModel: ECG199\u003cbr\u003eMPN: ECG199\u003cbr\u003eAlternate Part Number: ECG-199\u003cbr\u003eCross-Reference Number: NTE199\u003cbr\u003eType: NPN Bipolar Junction Transistor\u003cbr\u003eTransistor Polarity: NPN\u003cbr\u003eSemiconductor Material: Silicon\u003cbr\u003eApplication: Low-Noise, High-Gain Amplifier\u003cbr\u003eCollector-Emitter Voltage: 50V\u003cbr\u003eCollector-Base Voltage: 70V\u003cbr\u003eEmitter-Base Voltage: 5V\u003cbr\u003eMaximum Collector Current: 100mA\u003cbr\u003eMaximum Power Dissipation: 360mW\u003cbr\u003eDC Current Gain: 400–800\u003cbr\u003eMaximum Noise Figure: 3dB\u003cbr\u003eNumber of Pins: 3\u003cbr\u003ePin Configuration: Emitter-Collector-Base\u003cbr\u003ePackage: TO-92\u003cbr\u003eMounting Style: Through-Hole\u003cbr\u003eProduct Status: Discontinued \/ Obsolete\u003cbr\u003eQuantity: 1\u003cbr\u003eCondition: New Old Stock\u003cbr\u003eCustom Label\/SKU: ECG-ECG199-N\u003cbr\u003e\u003cbr\u003eDESCRIPTION\u003cbr\u003eECG ECG199 silicon NPN bipolar transistor designed for low-noise preamplifier and small-signal industrial amplifier applications. This discontinued three-lead transistor features high current gain, low collector saturation voltage, and low-noise performance in a compact TO-92 through-hole package.\u003cbr\u003e\u003cbr\u003eThe ECG199 cross-references to the NTE199 replacement transistor. Compatibility should be confirmed by comparing the electrical ratings, lead arrangement, circuit requirements, and original equipment documentation before installation.\u003cbr\u003e\u003cbr\u003eFeatures:\u003cbr\u003eECG ECG199\u003cbr\u003eSilicon NPN Transistor\u003cbr\u003eLow-Noise, High-Gain Amplifier\u003cbr\u003e50V Collector-Emitter Rating\u003cbr\u003e70V Collector-Base Rating\u003cbr\u003e5V Emitter-Base Rating\u003cbr\u003e100mA Maximum Collector Current\u003cbr\u003e360mW Maximum Power Dissipation\u003cbr\u003e400–800 DC Current Gain\u003cbr\u003e3dB Maximum Noise Figure\u003cbr\u003eEmitter-Collector-Base Lead Arrangement\u003cbr\u003eThree-Lead TO-92 Package\u003cbr\u003eThrough-Hole Mounting\u003cbr\u003eNTE199 Cross Reference\u003cbr\u003eDiscontinued Vintage Semiconductor\u003cbr\u003eQuantity of One\u003cbr\u003e\u003cbr\u003eThis component is New Old Stock from long-term inventory. It has not been installed or placed into service. No functional testing has been performed. Cosmetic storage wear, surface marks, oxidation, discoloration, or slight lead irregularities may be present from age and handling. Please review all photographs for the exact condition and markings of the component being offered.\u003cbr\u003e\u003cbr\u003eDISCLAIMER\u003cbr\u003eThis item is New Old Stock from long-term inventory and has not been functionally tested. Due to the age of this discontinued electronic component, compatibility and final testing are the buyer’s responsibility. Cross-reference information does not guarantee suitability for every circuit. Verify voltage, current, gain, power dissipation, package, pin configuration, and application requirements before purchasing or installing. Ships fast with tracking. 30-day returns accepted; buyer pays return shipping.\u003cbr\u003e\u003cbr\u003eLEGAL DISCLAIMER\u003cbr\u003eWe are not an authorized distributor, reseller, or representative of ECG. All product names, trademarks, brands, and logos are the property of their respective owners. Products are sourced from surplus inventory and are not covered by manufacturer warranties.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCOMPATIBILITY \u0026amp; CROSS-REFERENCE\u003c\/strong\u003e\u003cbr\u003eECG and NTE are aftermarket cross-reference replacement house numbers, and the ECG199 corresponds directly to the NTE199. NTE's published datasheet specifies the NTE199 as a silicon NPN transistor in a TO-92 package designed for low-noise preamplifier and small-signal industrial amplifier applications, rated 50V collector-emitter, 70V collector-base, 5V emitter-base and 100mA collector current, with low collector saturation voltage and tight beta control — matching the ratings of this device. ECG-numbered devices are long discontinued and NTE Electronics ceased operations in 2024, so remaining stock of both lines is new old stock. Confirm the original device's ratings and the emitter-collector-base lead arrangement before substituting.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eQ\u0026amp;A\u003c\/strong\u003e\u003cbr\u003eQ: What is the ECG199? A: A silicon NPN low-noise, high-gain transistor in a TO-92 package, rated 50V collector-emitter and 70V collector-base with 100mA maximum collector current.\u003cbr\u003eQ: What is the NTE equivalent? A: The NTE199 — NTE's published ratings match this device.\u003cbr\u003eQ: Where is this transistor typically used? A: Low-noise preamplifier and small-signal amplifier stages in audio, radio and instrumentation service work.\u003cbr\u003e\u003cbr\u003eECG ECG199 ECG-199 NTE199 NPN Transistor Silicon Transistor Low Noise Transistor High Gain Transistor Preamp Transistor Preamplifier Transistor Small Signal Transistor Industrial Amplifier Transistor Audio Amplifier Transistor TO-92 Transistor Through Hole Transistor 50V Transistor 100mA Transistor Vintage Semiconductor Obsolete Transistor Discontinued Electronic Component NOS Transistor Vintage Electronics Radio Repair Audio Repair Stereo Repair Industrial Electronics Replacement Transistor\u003cbr\u003e\u003cbr\u003eThank you for shopping with American Industrial Parts Group!","brand":"ECG","offers":[{"title":"Default Title","offer_id":49623593812123,"sku":"ECG-ECG199-N","price":7.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/0857\/7435\/files\/ecg199-nte199-npn-low-noise-transistor-1-american-industrial-parts-group.png?v=1790177717"},{"product_id":"lot-of-10-ecg-ecg199-npn-low-noise-high-gain-transistors-to-92-vintage-nos","title":"Lot of 10 ECG199 NTE199 NPN Low Noise High Gain Transistors TO-92 NOS","description":"ITEM SPECIFICS\u003cbr\u003eBrand: ECG\u003cbr\u003eModel: ECG199\u003cbr\u003eMPN: ECG199\u003cbr\u003eAlternate Part Number: ECG-199\u003cbr\u003eCross-Reference Number: NTE199\u003cbr\u003eType: NPN Bipolar Junction Transistor\u003cbr\u003eTransistor Polarity: NPN\u003cbr\u003eSemiconductor Material: Silicon\u003cbr\u003eApplication: Low-Noise, High-Gain Amplifier\u003cbr\u003eCollector-Emitter Voltage: 50V\u003cbr\u003eCollector-Base Voltage: 70V\u003cbr\u003eEmitter-Base Voltage: 5V\u003cbr\u003eMaximum Collector Current: 100mA\u003cbr\u003eMaximum Power Dissipation: 360mW\u003cbr\u003eDC Current Gain: 400–800\u003cbr\u003eMaximum Noise Figure: 3dB\u003cbr\u003eNumber of Pins: 3\u003cbr\u003ePin Configuration: Emitter-Collector-Base\u003cbr\u003ePackage: TO-92\u003cbr\u003eMounting Style: Through-Hole\u003cbr\u003eProduct Status: Discontinued \/ Obsolete\u003cbr\u003eNumber of Components: 10\u003cbr\u003eCondition: New Old Stock\u003cbr\u003eCustom Label\/SKU: ECG-ECG199-N-2\u003cbr\u003e\u003cbr\u003eDESCRIPTION\u003cbr\u003eLot of 10 ECG ECG199 silicon NPN bipolar transistors designed for low-noise preamplifier and small-signal industrial amplifier applications. These discontinued three-lead transistors feature high current gain, low collector saturation voltage, and low-noise performance in compact TO-92 through-hole packages.\u003cbr\u003eThe ECG199 cross-references to the NTE199 replacement transistor. Compatibility should be confirmed by comparing the electrical ratings, lead arrangement, circuit requirements, and original equipment documentation before installation.\u003cbr\u003e\u003cbr\u003eFeatures:\u003cbr\u003eLot of 10 Transistors\u003cbr\u003eECG ECG199\u003cbr\u003eSilicon NPN Transistor\u003cbr\u003eLow-Noise, High-Gain Amplifier\u003cbr\u003e50V Collector-Emitter Rating\u003cbr\u003e70V Collector-Base Rating\u003cbr\u003e5V Emitter-Base Rating\u003cbr\u003e100mA Maximum Collector Current\u003cbr\u003e360mW Maximum Power Dissipation\u003cbr\u003e400–800 DC Current Gain\u003cbr\u003e3dB Maximum Noise Figure\u003cbr\u003eEmitter-Collector-Base Lead Arrangement\u003cbr\u003eThree-Lead TO-92 Package\u003cbr\u003eThrough-Hole Mounting\u003cbr\u003eNTE199 Cross Reference\u003cbr\u003e\u003cbr\u003eDiscontinued Vintage Semiconductors\u003cbr\u003eThese components are New Old Stock from long-term inventory. They have not been installed or placed into service. No functional testing has been performed. Cosmetic storage wear, surface marks, oxidation, discoloration, or slight lead irregularities may be present from age and handling. Please review all photographs for the exact condition and markings of the components being offered.\u003cbr\u003e\u003cbr\u003eDISCLAIMER\u003cbr\u003eThese items are New Old Stock from long-term inventory and have not been functionally tested. Due to the age of these discontinued electronic components, compatibility and final testing are the buyer’s responsibility. Cross-reference information does not guarantee suitability for every circuit. Verify voltage, current, gain, power dissipation, package, pin configuration, and application requirements before purchasing or installing. Ships fast with tracking. 30-day returns accepted; buyer pays return shipping.\u003cbr\u003e\u003cbr\u003eLEGAL DISCLAIMER\u003cbr\u003eWe are not an authorized distributor, reseller, or representative of ECG. All product names, trademarks, brands, and logos are the property of their respective owners. Products are sourced from surplus inventory and are not covered by manufacturer warranties.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCOMPATIBILITY \u0026amp; CROSS-REFERENCE\u003c\/strong\u003e\u003cbr\u003eECG and NTE are aftermarket cross-reference replacement house numbers, and the ECG199 corresponds directly to the NTE199. NTE's published datasheet specifies the NTE199 as a silicon NPN transistor in a TO-92 package designed for low-noise preamplifier and small-signal industrial amplifier applications, rated 50V collector-emitter, 70V collector-base, 5V emitter-base and 100mA collector current, with low collector saturation voltage and tight beta control — matching the ratings of this device. ECG-numbered devices are long discontinued and NTE Electronics ceased operations in 2024, so remaining stock of both lines is new old stock. Confirm the original device's ratings and the emitter-collector-base lead arrangement before substituting.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eQ\u0026amp;A\u003c\/strong\u003e\u003cbr\u003eQ: What is included in this lot? A: Ten ECG199 silicon NPN low-noise, high-gain transistors in TO-92 packages, rated 50V collector-emitter with 100mA maximum collector current.\u003cbr\u003eQ: What is the NTE equivalent? A: The NTE199 — NTE's published ratings match this device.\u003cbr\u003eQ: Where are these transistors typically used? A: Low-noise preamplifier and small-signal amplifier stages in audio, radio and instrumentation service work.\u003cbr\u003e\u003cbr\u003eECG ECG199 ECG-199 NTE199 Lot of 10 10PCS NPN Transistors Silicon Transistor Low Noise Transistor High Gain Transistor Preamp Transistor Preamplifier Transistor Small Signal Transistor Industrial Amplifier Transistor Audio Amplifier Transistor TO-92 Transistor Through Hole Transistor 50V Transistor 100mA Transistor Vintage Semiconductor Obsolete Transistor Discontinued Electronic Component NOS Transistors Vintage Electronics Radio Repair Audio Repair Stereo Repair Industrial Electronics Replacement Transistor Bulk Semiconductor Lot\u003cbr\u003e\u003cbr\u003eThank you for shopping with American Industrial Parts Group!","brand":"ECG","offers":[{"title":"Default Title","offer_id":49623595319451,"sku":"ECG-ECG199-N-2","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/0857\/7435\/files\/ecg199-nte199-npn-low-noise-transistor-lot10-1-american-industrial-parts-group.jpg?v=1790177717"},{"product_id":"ecg-240-pnp-silicon-transistor-300v-500ma-to-202n-vintage-nos","title":"ECG 240 PNP Silicon Transistor 300V 500mA TO-202N Vintage NOS","description":"\u003cp\u003eITEM SPECIFICS\u003c\/p\u003e\u003cp\u003eBrand: ECG\u003cbr\u003eMPN: 240\u003cbr\u003eModel: ECG240\u003cbr\u003eType: PNP Transistor\u003cbr\u003eTransistor Type: PNP\u003cbr\u003eSemiconductor Material: Silicon\u003cbr\u003eCollector-Emitter Voltage: 300 V\u003cbr\u003eCollector Current: 500 mA\u003cbr\u003ePackage \/ Case: TO-202N\u003cbr\u003eMounting Style: Through-Hole\u003cbr\u003eNumber of Leads: 3\u003cbr\u003eCondition: New Old Stock\u003cbr\u003eComponent Marking: ECG 240\u003c\/p\u003e\u003cp\u003eDESCRIPTION\u003c\/p\u003e\u003cp\u003eVintage ECG 240 PNP silicon transistor from new old stock inventory.\u003c\/p\u003e\u003cp\u003eThe ECG240 is a high-voltage PNP transistor intended for audio\/video and related electronic applications. This component is clearly marked ECG 240 and uses a three-lead TO-202N style package with an integral mounting tab.\u003c\/p\u003e\u003cp\u003e• ECG 240 \/ ECG240\u003cbr\u003e• PNP silicon transistor\u003cbr\u003e• 300 V collector-emitter voltage rating\u003cbr\u003e• 500 mA collector current rating\u003cbr\u003e• TO-202N package\u003cbr\u003e• Three-lead through-hole configuration\u003cbr\u003e• High-voltage transistor\u003cbr\u003e• Vintage electronic component\u003cbr\u003e• New old stock\u003c\/p\u003e\u003cp\u003eThe ECG Semiconductor replacement literature identifies ECG240 as complementary to ECG191.\u003c\/p\u003e\u003cp\u003ePlease verify the ECG240 part number, electrical specifications, pin configuration, and suitability for your application before purchasing.\u003c\/p\u003e\u003cp\u003eCOMPATIBILITY \u0026amp; CROSS-REFERENCE\u003c\/p\u003e\u003cp\u003eECG Semiconductor replacement literature identifies the ECG240 as complementary to the ECG191. Verify pinout, ratings, and suitability for your circuit before installation.\u003c\/p\u003e\u003cp\u003eQ: What is the ECG240 complementary to?\u003cbr\u003eA: ECG Semiconductor literature identifies it as complementary to the ECG191.\u003c\/p\u003e\u003cp\u003eQ: What are its ratings?\u003cbr\u003eA: 300 V collector-emitter voltage and 500 mA collector current.\u003c\/p\u003e\u003cp\u003eQ: What package is it?\u003cbr\u003eA: TO-202N, three leads, with an integral mounting tab.\u003c\/p\u003e\u003cp\u003eDISCLAIMER\u003c\/p\u003e\u003cp\u003eNew old stock component. Item may show normal cosmetic evidence of long-term storage and handling consistent with its age, including minor oxidation or discoloration of the leads or mounting tab. Please review the photographs carefully for the exact condition and markings of the item being offered. No testing has been performed unless specifically stated. Buyer is responsible for verifying part number, electrical specifications, suitability, and compatibility before installation.\u003c\/p\u003e\u003cp\u003eLEGAL DISCLAIMER\u003c\/p\u003e\u003cp\u003eECG is a trademark or trade name of its respective owner. American Industrial Parts Group is not an authorized distributor, dealer, or representative of ECG or its associated manufacturers. All trademarks, manufacturer names, product names, and part numbers are used solely for identification and reference purposes. No affiliation with or endorsement by the manufacturer is implied.\u003c\/p\u003e\u003cp\u003eECG 240 ECG240 ECG-240 PNP transistor PNP silicon transistor high voltage transistor 300V transistor 500mA transistor TO-202N transistor TO202 transistor ECG semiconductor vintage ECG transistor vintage semiconductor vintage electronics NOS transistor new old stock transistor obsolete transistor audio transistor video transistor high voltage PNP transistor ECG191 complementary transistor replacement transistor legacy electronic component industrial electronics MRO electronic component through hole transistor vintage transistor transistor failed replacement high voltage PNP transistor replacement\u003c\/p\u003e\u003cp\u003eThank you for shopping with American Industrial Parts Group!\u003c\/p\u003e","brand":"ECG","offers":[{"title":"Default Title","offer_id":49693977378971,"sku":"ECG-240-N","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/0857\/7435\/files\/ecg-240-pnp-silicon-transistor-to-202n-1-american-industrial-parts-group.jpg?v=1790830527"},{"product_id":"ecg-2056-8-bit-multiplying-d-a-converter-ic-16-pin-dip-vintage-nos","title":"ECG 2056 8-Bit Multiplying D\/A Converter IC 16-Pin DIP Vintage NOS","description":"\u003cp\u003eITEM SPECIFICS\u003c\/p\u003e\u003cp\u003eBrand: ECG\u003cbr\u003eMPN: ECG2056\u003cbr\u003eModel: ECG2056\u003cbr\u003eType: D\/A Converter IC\u003cbr\u003eFunction: 8-Bit Multiplying Digital-to-Analog Converter\u003cbr\u003eNumber of Bits: 8\u003cbr\u003ePackage \/ Case: 16-Pin DIP\u003cbr\u003eMounting Style: Through-Hole\u003cbr\u003eNumber of Pins: 16\u003cbr\u003eCondition: New Old Stock\u003cbr\u003eComponent Marking: ECG2056 P312 5LAA\u003cbr\u003eCross Reference: LM1408N-6, LM1408N-7, DAC0806\u003c\/p\u003e\u003cp\u003eDESCRIPTION\u003c\/p\u003e\u003cp\u003eVintage ECG2056 integrated circuit from new old stock inventory.\u003c\/p\u003e\u003cp\u003eThe ECG2056 is an 8-bit multiplying digital-to-analog converter IC in a 16-pin dual-inline package. Cross-reference sources identify ECG2056 with LM1408N-6, LM1408N-7, and DAC0806 equivalents.\u003c\/p\u003e\u003cp\u003e• ECG2056\u003cbr\u003e• 8-bit multiplying D\/A converter\u003cbr\u003e• Digital-to-analog converter IC\u003cbr\u003e• 16-pin DIP package\u003cbr\u003e• Through-hole mounting\u003cbr\u003e• Cross references include LM1408N-6, LM1408N-7, and DAC0806\u003cbr\u003e• Vintage electronic component\u003cbr\u003e• New old stock\u003cbr\u003e• Component marking: ECG2056 P312 5LAA\u003c\/p\u003e\u003cp\u003eThe P312 and 5LAA markings are reproduced exactly as shown on the component and are not represented as electrical specifications or verified date codes.\u003c\/p\u003e\u003cp\u003ePlease verify the ECG2056 part number, pinout, cross-reference, and electrical requirements for your application before purchasing.\u003c\/p\u003e\u003cp\u003eCOMPATIBILITY \u0026amp; CROSS-REFERENCE\u003c\/p\u003e\u003cp\u003eListed cross-references for the ECG2056 are LM1408N-6, LM1408N-7, and DAC0806. Verify pinout, electrical requirements, and suitability for your circuit before installation.\u003c\/p\u003e\u003cp\u003eQ: What does the ECG2056 do?\u003cbr\u003eA: It is an 8-bit multiplying digital-to-analog converter IC.\u003c\/p\u003e\u003cp\u003eQ: What are the listed cross-references?\u003cbr\u003eA: LM1408N-6, LM1408N-7, and DAC0806.\u003c\/p\u003e\u003cp\u003eQ: What package is it?\u003cbr\u003eA: 16-pin DIP, through-hole.\u003c\/p\u003e\u003cp\u003eDISCLAIMER\u003c\/p\u003e\u003cp\u003eNew old stock component. Item may show normal cosmetic evidence of long-term storage and handling consistent with its age, including minor oxidation or discoloration of the leads. Please review the photographs carefully for the exact condition and markings of the item being offered. No testing has been performed unless specifically stated. Buyer is responsible for verifying part number, electrical specifications, pinout, suitability, and compatibility before installation.\u003c\/p\u003e\u003cp\u003eLEGAL DISCLAIMER\u003c\/p\u003e\u003cp\u003eECG is a trademark or trade name of its respective owner. American Industrial Parts Group is not an authorized distributor, dealer, or representative of ECG, Philips ECG, NTE, or any referenced manufacturer. All trademarks, manufacturer names, product names, and part numbers are used solely for identification and reference purposes. No affiliation with or endorsement by any manufacturer is implied.\u003c\/p\u003e\u003cp\u003eECG2056 ECG 2056 ECG-2056 NTE2056 LM1408N-6 LM1408N-7 DAC0806 8 bit DAC 8-bit digital analog converter multiplying DAC multiplying D\/A converter digital to analog converter IC 16 pin DIP DIP16 through hole IC vintage ECG IC vintage semiconductor vintage electronics NOS integrated circuit new old stock IC obsolete IC replacement IC legacy electronics analog converter IC industrial electronics MRO electronic component vintage computer IC DAC failed replacement analog converter IC replacement\u003c\/p\u003e\u003cp\u003eThank you for shopping with American Industrial Parts Group!\u003c\/p\u003e","brand":"ECG","offers":[{"title":"Default Title","offer_id":49693978132635,"sku":"ECG-2056-N","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/0857\/7435\/files\/ecg-2056-8-bit-multiplying-dac-ic-1-american-industrial-parts-group.jpg?v=1790830528"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/0857\/7435\/collections\/Industrial-Automation-MRO-Products-American-Industrial-Parts-Group_5c7b0f7b-5b14-4209-850a-7de5bdcdc212.png?v=1790178009","url":"https:\/\/americanindustrialpartsgroup.com\/collections\/ecg.oembed","provider":"American Industrial Parts Group","version":"1.0","type":"link"}