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Semiconductors

Semiconductor Components

At Electrical Surplus, we offer an extensive selection of electronic semiconductor devices for sale. Semiconductor components offer several advantages, including being shock-proof, having an almost unlimited lifespan, and requiring a low voltage to operate properly.  

Our supply ranges from electronic transistors and timers to diodes and audio converters. Start shopping for your semiconductor components today to experience all of the advantages they have to offer. If the semiconductor you’re looking for is out of stock, you can request a part and we’ll get it to you as quickly as possible.

 Find the semiconductor component you need in our selection below.  

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  11. ASIA 13 items
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  29. FAIRCHILD 46 items
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  31. F 3 items
  32. Fairchild semiconductor corportion 1 item
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  50. IR 2 items
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  52. KEC 1 item
  53. KSC 2 items
  54. Lambda 8 items
  55. KRC 1 item
  56. Linear Integrated Systems 1 item
  57. MAJOR 10 items
  58. National Semiconductor Corp 10 items
  59. Matsushita 8 items
  60. MICRO POWER 1 item
  61. MISC 2 items
  62. Mitsubishi 3 items
  63. MOT/TI 1 item
  64. MIX 1 item
  65. Motorola 271 items
  66. Motorola Inc 3 items
  67. Texas Instruments 39 items
  68. NAT 4 items
  69. NATIONAL SEMICONDUCTOR CORP. 33 items
  70. NATIONAL SEMI CONDUCTOR 1 item
  71. NAT/FAIR 1 item
  72. NJS 2 items
  73. NSE 1 item
  74. NTE Electronics Inc. 131 items
  75. Philips 63 items
  76. NTE Electronics Inc 23 items
  77. NXP Semiconductors 1 item
  78. O 1 item
  79. Optek 1 item
  80. ON SEMI 7 items
  81. On Semi/Motorola 1 item
  82. ON SEMICONDUCTOR 1 item
  83. Philco 2 items
  84. Panasonic/Matsushita 2 items
  85. Panasonic 1 item
  86. PECOR 1 item
  87. Sylvania 5 items
  88. Powerex. 1 item
  89. RAYTHEON. 8 items
  90. RAYTHEON 1 item
  91. R 1 item
  92. RAY/CRP 1 item
  93. PTC 1 item
  94. RCA 98 items
  95. Samsung 1 item
  96. S 3 items
  97. ROHM 8 items
  98. RCA/SIG 1 item
  99. RCA/STC 1 item
  100. RCA/MOT 1 item
  101. SES 2 items
  102. Sanyo 8 items
  103. SGS-THOMPSON 4 items
  104. Sanken 6 items
  105. SENSITRON 1 item
  106. SCA 2 items
  107. Semiconductor Technology Inc 5 items
  108. SCI 1 item
  109. Shindengen America 1 item
  110. SGS 2 items
  111. SHINDENGEN? 1 item
  112. SGS THOMPSON 2 items
  113. Siemens 3 items
  114. Siliconix 1 item
  115. Silicon General/Microsemi 3 items
  116. SK 2 items
  117. SILICON GEN 4 items
  118. SK SERIES 2 items
  119. ST 1 item
  120. Solitron 13 items
  121. SPC 2 items
  122. Sprague 4 items
  123. SSI 1 item
  124. SPC/CDEZ 2 items
  125. Solid State Devices Inc 5 items
  126. STS 1 item
  127. STC 5 items
  128. SUMITOMO 1 item
  129. STT 1 item
  130. STC/CCSX 1 item
  131. STL 1 item
  132. SYNERTEK 9 items
  133. Teledyne 4 items
  134. Tektronix 5 items
  135. T 1 item
  136. T/CCAB 1 item
  137. Teccor 1 item
  138. Toshiba 17 items
  139. TFK 1 item
  140. THOMSON CSF 1 item
  141. THOMPSON 1 item
  142. TYCO/ M/A-COM 1 item
  143. Unitrode 7 items
  144. TRW 3 items
  145. TSR 1 item
  146. TRANSITRON ELECTRONIC CORP 1 item
  147. Westinghouse 15 items
  148. Zetex 4 items
  149. WW. 1 item
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  1. Toshiba - 2SD818 - Transistor, NPN. P/N: 2SD818.
    Toshiba - 2SD818 - Transistor, NPN. P/N: 2SD818.
    $4.95
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    Transistor, NPN. Max voltage: 600VCEO, 1500VCBO. Max current: 2.5Amp. Dissipation: 50 watt. Package: TO-3. P/N: 2SD818. Note: Silicon. High switching speed. High Voltage. Learn More
  2. Toshiba - 2SD633 - Transistor, Silicon NPN. P/N: 2SD633.
    Toshiba - 2SD633 - Transistor, Silicon NPN. P/N: 2SD633.
    Special Price $2.49 Regular Price $3.00 As low as $1.98
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    Toshiba - 2SD633 Transistor, Silicon NPN.

    Max voltage: 100V.

    Max current: 7 Amp.

    Dissipation: 40 watt.

    Package: TO-220.

    Note: Triple diffused type (high power switching, hammer drive, pulse motor drive applications).

    Compliment: 2SB673

    Learn More
  3. ST Microelectronics - 2N3725 - Transistor, NPN. P/N: 2N3725.
    ST Microelectronics - 2N3725 - Transistor, NPN. P/N: 2N3725.
    $1.79
    Out of stock
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    Transistor, NPN silicon. Max voltage: 50V. Max current: 1amp. Dissipation: 0.8 watt. Gain: 300MHz. Package: TO-39. P/N: 2N3725. Note: High voltage, high current switch. Learn More
  4. SOLITRON - 2N6374 - Transistor, NPN. P/N: 2N6374.
    SOLITRON - 2N6374 - Transistor, NPN. P/N: 2N6374.
    Special Price $21.95 Regular Price $29.78
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    Transistor, NPN. Max voltage: 40VCEO, 50VCBO. Max current: 6Amp. Dissipation: 40 watt. Package: TO-66 steel, heatsinked. P/N: 2N6374. Operating temperature: -65 to 200 Deg C. Note: Silicon. Learn More
  5. SIEMENS - SFH309-4 - Phototransistor, NPN, 860nm. Package of 10.
    SIEMENS - SFH309-4 - Phototransistor, NPN, 860nm. Package of 10.
    $3.00
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    Phototransistor, NPN, 860nm. Voltage: 35Vce. Current: 15mA. Dissipation: 165mW. Clear. Package: 3mm LED plastic, 2-Pin T-1. Operating temperature: -40 to 100 Deg C. Note: Silicon. Application: 380nm to 1150nm. Infineon/Siemens. Package of 10. Learn More
  6. Siemens - BF255 - Transistor, NPN. P/N: BF255-18.
    Siemens - BF255 - Transistor, NPN. P/N: BF255-18.
    $0.98 As low as $0.49
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    Siemens - BF255 Transistor, NPN.

    Max voltage: 20VCEO, 30VCES.

    Max current: 30mA.

    Dissipation: 250mW.

    Package: TO-92.

    Storage temperature: -65 to 150 Deg C.

    Application: RF. For AM and FM stages.

    Note: Silicon.

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  7. RCA/MOT - 2N2270 - Transistor. Silicon NPN. 5W 1A 60V. Used.
    RCA/MOT - 2N2270 - Transistor. Silicon NPN. 5W 1A 60V. Used.
    Special Price $1.95 Regular Price $2.95
    IN STOCK - MORE THAN 100 READY TO SHIP!
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    Transistor. Silicon NPN. 5W 1A 60V. High speed planar power transistor. TO-5 cut 1/4" leads. Learn More
  8. RCA/STC - 2N3584 - Transistor, NPN. P/N: 2N3584.
    RCA/STC - 2N3584 - Transistor, NPN. P/N: 2N3584.
    $16.00
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    Transistor, NPN. Voltage: 250V. Current: 2Amp. Dissipation: 35 watt. Gain: 40 @ 100 mA @ 10 V. Package: TO-66 steel. Note: Silicon. Military NSN 5961-00-852-2552. High Voltage. Learn More
  9. Raytheon - JANTX2N3700 - Transistor, Si NPN. Max voltage: 80Vceo, 140Vcbo.
    Raytheon - JANTX2N3700 - Transistor, Si NPN. Max voltage: 80Vceo, 140Vcbo.
    $11.57
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    Transistor, Si NPN. Max voltage: 80Vceo, 140Vcbo. Max current: 1Amp. Dissipation: 500mW. Package: TO-18, gold with test dots. Military P/N: JANTX2N3700. Learn More
  10. RCA - 2N3055HOM - 2N3055H - Transistor, NPN silicon, High Reliability Hometaxial Selected version, TO-3.
    RCA - 2N3055HOM - 2N3055H - Transistor, NPN silicon, High Reliability Hometaxial Selected version, TO-3.
    Special Price $5.98 Regular Price $6.95 As low as $3.98
    IN STOCK - MORE THAN 1,000 READY TO SHIP!
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    RCA - 2N3055HOM / 2N3055H Transistor, NPN Silicon.

    Over time, RCA changed the structure of the 2N3055 transistors. The first transistors were called hometaxial, and this model is certainly one of them. They were manufactured by simultaneously inversely doping a wafer with a base doping on both sides, thus generating the emitter and collector layers. Then only the base layer had to be etched free for contacting. 

    Max Voltage: 60V.

    Max Current: 15 Amp collector, 7 Amp base.

    Dissipation: 115 Watt.

    Package: TO-3 Steel.

    Application: Designed for general purpose switching and amplifier applications.

    Operating Temperature: -65 to +200 DegC.

    RCA - 2N3055HOM is a High Reliability Version "Hometaxial Selected version" of the old standard which often works as compared to earlier versions "E" (Epitaxial).

    Genuine Vintage RCA - New Old Stock - Rare

    Alternates: ECG130, BDY73

    Note: Genuine RCA 2N3055HOM/2N3055H Power Transistors have a reduced bandwidth as compared to the new currently manufactured 2N3055 replacements. Repair shop personnel report 2N3055H transistors perform better in vintage equipment. Few suppliers still have the older RCA 2N3055H transistors. 

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  11. RCA - 2N1486 - Transistor, NPN. P/N: 2N1486. Discounted. QC.
    RCA - 2N1486 - Transistor, NPN. P/N: 2N1486. Discounted. QC.
    Special Price $28.97 Regular Price $38.95
    Out of stock
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    Transistor, NPN. Max voltage: 55VCEO, 100VCBO. Max current: 3Amp. Dissipation: 1.75 Watt. Package: TO-8. P/N: 2N1486. Operating temperature: 200 Deg C. Note: Silicon. Medium power. Learn More
  12. RCA - 40372 - Transistors. NPN silicon heatsinked. 2N3054.
    RCA - 40372 - Transistors. NPN silicon heatsinked. 2N3054.
    Special Price $4.98 Regular Price $8.50 As low as $3.98
    IN STOCK - MORE THAN 500 READY TO SHIP!
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    RCA - 40372 Transistor.

    NPN silicon 55Vceo 4Amp 25 watt, with heat radiator.

    Marked 40372.

    Case: TO-66 heatsinked.

    Military NSN 5961-00-497-9132,

    Cross: Fluke 288381. 2N3054

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  13. RCA - 40347 - Transistor, NPN. 40V 1.5Amp 1W.
    RCA - 40347 - Transistor, NPN. 40V 1.5Amp 1W.
    Special Price $7.98 Regular Price $9.50
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    RCA - 40347 Transistor, NPN.

    Max voltage: 40VCEO 60VCBO.

    Max current: 1.5Amp.

    Dissipation: 1 watt.

    Package: TO-39. New.

    Note: Silicon. With attached radiator (Heatsink).

    Genuine Vintage RCA - New Old Stock

    Alternate: NTE186.

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  14. RCA - 2N4347 - Transistors, NPN. 5 A, 120 V, NPN, SI, POWER TRANSISTOR, TO-3
    RCA - 2N4347 - Transistors, NPN. 5 A, 120 V, NPN, SI, POWER TRANSISTOR, TO-3
    Special Price $5.98 Regular Price $8.50 As low as $3.98
    IN STOCK - MORE THAN 100 READY TO SHIP!
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    RCA - 2N4347 Transistor, NPN.

    Max voltage: 120VCEO 140VCBO.

    Max current: 5Amp (10Amp Peak).

    Dissipation: 100 watt.

    Package: TO-3 steel.

    Note: High Power Silicon.

    Genuine RCA - 2N4347 Vintage New Old Stock

    NSN: 5961-00-102-0367

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  15. Philips - PVB42004X - Transistor, NPN Microwave. P/N: PVB42004X.
    Philips - PVB42004X - Transistor, NPN Microwave. P/N: PVB42004X.
    Special Price $199.99 Regular Price $275.00
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    Transistor, NPN Microwave. Max voltage: 15VCEO, 40VCBO. Max current: 1 Amp. Dissipation: 18 watt. Package: SOT-445, flange. P/N: PVB42004X. Operating temperature: 200 Deg C. Application: Intended for use in common base class B power amplifiers up to 4.2 GHz. Note: Silicon planar epitaxial. Learn More
  16. Philips - BUW12A - Transistor, NPN. P/N: BUW12A.
    Philips - BUW12A - Transistor, NPN. P/N: BUW12A.
    $6.50
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    Transistor, NPN. Voltage: 450VCEO, 1000VCBO. Current: 8 Amp. Dissipation: 125 watt. Operating temperature. -65 to 175 Deg C. Package: TO-3NP (TO-218). Note: Silicon. High Voltage, fast speed. Learn More
  17. National Semiconductor Corp - MPSA42 - Transistor, NPN. Small Signal Transistor, High Voltage
    National Semiconductor Corp - MPSA42 - Transistor, NPN. Small Signal Transistor, High Voltage
    $0.49 As low as $0.29
    IN STOCK - MORE THAN 1,000 READY TO SHIP!
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    National Semiconductor Corp - MPSA42 Transistor, NPN.

    Voltage: 300V.

    Current: 500mAdc.

    Dissipation: 625mW.

    Operating temperature: -55 to 150 Deg C.

    Package: TO-92, plastic.

    Note: Silicon darlington.

    High Voltage.

    Alternates: ECG ECG287, NTE MPSA42, 722934, NTE287, ZTX457

    NSN 5961-01-304-8817

    Learn More
  18. NEC Corporation - 2SD205 - Transistor, NPN. 40VCEO, 60VCBO, Vintage TO-39 in a heat sink.
    NEC Corporation - 2SD205 - Transistor, NPN. 40VCEO, 60VCBO, Vintage TO-39 in a heat sink.
    Special Price $4.98 Regular Price $8.50 As low as $3.98
    IN STOCK - MORE THAN 100 READY TO SHIP!
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    NEC Corporation - 2SD205 Transistor, NPN.

    Status: Discontinued - Rare

    Voltage: 40VCEO, 60VCBO.

    Current: 700mA.

    Dissipation: 1 Watt.

    Package: TO-39 in a heatsink.

    Note: Silicon.

    Genuine Vintage NEC 2SD205 - New Old Stock

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  19. NEC Corporation - 2SD143 - Transistor, NPN. 40V, 2A, TO-66
    NEC Corporation - 2SD143 - Transistor, NPN. 40V, 2A, TO-66
    Special Price $14.98 Regular Price $16.50 As low as $12.98
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    NEC Corporation - 2SD143 Transistor, NPN.

    Voltage: 40VCEO, 80VCBO.

    Current: 2 Amp.

    Dissipation: 15 watt.

    Package: TO-66.

    Note: NPN silicon planar power transistor intended as AF Amplifier / Switch.

    Genuine Vintage NEC - New Old Stock - Difficult Transistor to Find

    Similar/ Alternate:  2N3054, 2SD148

    Learn More
  20. NEC Corporation - 2SD142 - Transistor, NPN. 3A, 15W, TO-66.
    NEC Corporation - 2SD142 - Transistor, NPN. 3A, 15W, TO-66.
    Special Price $4.98 Regular Price $5.95 As low as $3.98
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    NEC Corporation - 2SD142 - Transistor, NPN.

    Voltage: 20VCEO, 40VCBO.

    Current: 3 Amp.

    Dissipation: 15 watt.

    Package: TO-66.

    Note: Silicon.

    Alternate: D44C2

    Genuine NEC - New Old Stock

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  21. National Semiconductor Corp - MPSA42RA - Transistor, NPN. 300V, 500Ma, TO-92.
    National Semiconductor Corp - MPSA42RA - Transistor, NPN. 300V, 500Ma, TO-92.
    $0.49 As low as $0.29
    IN STOCK - MORE THAN 1,000 READY TO SHIP!
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    National Semiconductor Corp - MPSA42RA Transistor, NPN.

    Voltage: 300V.

    Current: 500mAdc.

    Dissipation: 625mW.

    Operating temperature: -55 to 150 Deg C.

    Package: TO-92, plastic.

    Note: Silicon darlington.

    High Voltage.

    Alternates: NTE287, ZTX457

    Learn More
  22. National Semiconductor Corp - 2N5308A - Transistor, NPN. Darlington 40V, 1.2A, TO-92
    National Semiconductor Corp - 2N5308A - Transistor, NPN. Darlington 40V, 1.2A, TO-92
    $0.98 As low as $0.29
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    National Semiconductor Corp - 2N5308A Transistor, NPN, Darlington.

    Max Voltage: 40V.

    Max Current: 0.3 Amp.

    Dissipation: 625mW.

    Package: TO-92 plastic.

    Operating temperature: -50 to 150 Deg C.

    Note: Darlington.

    New Old Stock

    Alternates: SK9455A, GE2N5308A,B ECG:172A

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  23. National Semiconductor Corp - 2N4401 - Transistor, NPN. P/N: 2N4401. Package of 25.
    National Semiconductor Corp - 2N4401 - Transistor, NPN. P/N: 2N4401. Package of 25.
    Special Price $6.98 Regular Price $8.50
    IN STOCK - MORE THAN 100 READY TO SHIP!
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    National Semiconductor Corp - 2N4401 Transistor, NPN.

    Voltage: 40VCEO, 60VCBO.

    Current: 600mAdc.

    Dissipation: 200mW.

    Operating temperature: -55 to 150 Deg C.

    Package: TO-92, plastic.

    Note: Maybe replaced with equal manufactured by General Electric.

    Package of 25.

    Learn More
  24. Motorola - MPS8098 - Transistor, NPN. P/N: MPS8098. Package of 10.
    Motorola - MPS8098 - Transistor, NPN. P/N: MPS8098. Package of 10.
    Special Price $3.98 Regular Price $5.00
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    Motorola - MPS8098 Transistor, NPN.

    Max voltage: 60V.

    Max current: 500mAdc.

    Dissipation: 625mW.

    Package: TO-92, plastic.

    Note: Power switching transistors.

    Package of 10.

    Learn More
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