2N3904 PDF Specs and Replacement
The 2N3904 is one of the most widely used NPN bipolar junction transistors in low-power electronic circuits. Designed for general-purpose amplification and switching, it offers a reliable balance of performance, robustness, affordability, making it a staple in prototyping and commercial designs. The transistor supports a collector current up to 200mA and a collector-emitter voltage of 40V, allowing it to handle small signal stages, sensor interfaces, and digital switching tasks. With a typical DC current gain from 100 to 300, the 2N3904 efficiently amplifies low-level signals while maintaining stable operation across a broad temperature range. Thanks to its high switching speed, it is frequently used in oscillator circuits, pulse generators, and driver stages for LEDs and relays. Its standard TO92 package ensures easy integration on breadboards and PCBs. The 2N3904 remains a dependable choice for engineers and hobbyists who need a versatile, predictable transistor for everyday electronic applications.
Type Designator: 2N3904
Material of Transistor: Si
Polarity: NPN
Absolute Maximum Ratings
Maximum Collector Power Dissipation (Pc): 0.625
W
Maximum Collector-Base Voltage |Vcb|: 60
V
Maximum Collector-Emitter Voltage |Vce|: 40
V
Maximum Emitter-Base Voltage |Veb|: 6
V
Maximum Collector Current |Ic max|: 0.2
A
Max. Operating Junction Temperature (Tj): 150
°C
Electrical Characteristics
Transition Frequency (ft): 300
MHz
Collector Capacitance (Cc): 4(max)
pF
Forward Current Transfer Ratio (hFE), MIN: 100
Noise Figure, dB: -
Package:
TO92
-
BJT ⓘ Cross-Reference Search
2N3904 PDF detailed specifications
..1. Size:212K motorola
2n3903 2n3904.pdf 

MOTOROLA Order this document SEMICONDUCTOR TECHNICAL DATA by 2N3903/D General Purpose Transistors 2N3903 NPN Silicon * 2N3904 *Motorola Preferred Device COLLECTOR 3 2 BASE 1 EMITTER 1 2 3 MAXIMUM RATINGS CASE 29 04, STYLE 1 Rating Symbol Value Unit TO 92 (TO 226AA) Collector Emitter Voltage VCEO 40 Vdc Collector Base Voltage VCBO 60 Vdc Emitter Base Voltage ... See More ⇒
..2. Size:51K philips
2n3904 3.pdf 

DISCRETE SEMICONDUCTORS DATA SHEET book, halfpage M3D186 2N3904 NPN switching transistor 1999 Apr 23 Product specification Supersedes data of 1997 Jul 15 Philips Semiconductors Product specification NPN switching transistor 2N3904 FEATURES PINNING Low current (max. 200 mA) PIN DESCRIPTION Low voltage (max. 40 V). 1 collector 2 base APPLICATIONS 3 emitter High-spe... See More ⇒
..3. Size:60K st
2n3904.pdf 

2N3904 SMALL SIGNAL NPN TRANSISTOR PRELIMINARY DATA Ordering Code Marking Package / Shipment 2N3904 2N3904 TO-92 / Bulk 2N3904-AP 2N3904 TO-92 / Ammopack SILICON EPITAXIAL PLANAR NPN TRANSISTOR TO-92 PACKAGE SUITABLE FOR THROUGH-HOLE PCB ASSEMBLY THE PNP COMPLEMENTARY TYPE IS 2N3906 TO-92 TO-92 APPLICATIONS Bulk Ammopack WELL SUITABLE FOR TV AND HOME APPLIANCE EQUIPMENT... See More ⇒
..4. Size:169K fairchild semi
2n3904.pdf 

October 2011 2N3904 / MMBT3904 / PZT3904 NPN General Purpose Amplifier Features This device is designed as a general purpose amplifier and switch. The useful dynamic range extends to 100 mA as a switch and to 100 MHz as an amplifier. 2N3904 PZT3904 MMBT3904 C C E E C B TO-92 SOT-23 SOT-223 B Mark 1A EBC Absolute Maximum Ratings* Ta = 25 C unless otherwise noted Symb... See More ⇒
..5. Size:111K fairchild semi
2n3904 mmbt3904 pzt3904.pdf 

2N3904 MMBT3904 PZT3904 C C E E C C TO-92 B B SOT-23 B E SOT-223 Mark 1A NPN General Purpose Amplifier This device is designed as a general purpose amplifier and switch. The useful dynamic range extends to 100 mA as a switch and to 100 MHz as an amplifier. Absolute Maximum Ratings* TA = 25 C unless otherwise noted Symbol Parameter Value Units VCEO Collector-Emitter Voltage ... See More ⇒
..7. Size:260K mcc
2n3904 to-92.pdf 

MCC Micro Commercial Components TM 20736 Marilla Street Chatsworth 2N3904 Micro Commercial Components CA 91311 Phone (818) 701-4933 Fax (818) 701-4939 Features Lead Free Finish/RoHS Compliant ("P" Suffix designates RoHS Compliant. See ordering information) NPN General Capable of 600mW of Power Disspation and 200mA Ic Epoxy meets UL 94 V-0 flammability rating Purpose Am... See More ⇒
..8. Size:324K onsemi
2n3904.pdf 

NPN General - Purpose Amplifier 2N3904 Description This device is designed as a general-purpose amplifier and switch. The useful dynamic range extends to 100 mA as a switch and to www.onsemi.com 100 MHz as an amplifier. MAXIMUM RATINGS (Values are at TA = 25 C unless otherwise noted.) (Note 1, Note 2) Symbol Parameter Value Unit VCEO Collector-Emitter Voltage 40 V VCBO Collector-Bas... See More ⇒
..9. Size:177K onsemi
2n3903 2n3904.pdf 

2N3903, 2N3904 General Purpose Transistors NPN Silicon Features http //onsemi.com Pb-Free Packages are Available* COLLECTOR 3 MAXIMUM RATINGS 2 BASE Rating Symbol Value Unit Collector-Emitter Voltage VCEO 40 Vdc 1 Collector-Base Voltage VCBO 60 Vdc EMITTER Emitter-Base Voltage VEBO 6.0 Vdc Collector Current - Continuous IC 200 mAdc Total Device Dissipation PD @ TA = 25 ... See More ⇒
..10. Size:474K onsemi
2n3904 mmbt3904 pzt3904.pdf 

Is Now Part of To learn more about ON Semiconductor, please visit our website at www.onsemi.com Please note As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers will need to change in order to meet ON Semiconductor s system requirements. Since the ON Semiconductor product management systems do not have the ability to manage part nomenclatur... See More ⇒
..11. Size:250K utc
2n3904.pdf 

UNISONIC TECHNOLOGIES CO., LTD 2N3904 NPN SILICON TRANSISTOR NPN GENERAL PURPOSE AMPLIFIER FEATURES * Collector-Emitter Voltage VCEO=40V * Complementary to 2N3906 FEATURES ORDERING INFORMATION Ordering Number Pin Assignment Package Packing Lead Free Halogen Free 1 2 3 2N3904L-AB3-R 2N3904G-AB3-R SOT-89 B C E Tape Reel 2N3904L-T92-B 2N3904G-T92-B TO-92 E B C ... See More ⇒
..12. Size:162K auk
2n3904.pdf 

2N3904 NPN Silicon Transistor Descriptions PIN Connection General small signal application C Switching application Features B Low collector saturation voltage Collector output capacitance E Complementary pair with 2N3906 TO-92 Ordering Information Type NO. Marking Package Code 2N3904 2N3904 TO-92 Absolute maximum ratings Ta=25 C Charact... See More ⇒
..14. Size:378K secos
2n3904.pdf 

2N3904 0.2A, 60V NPN General Purpose Transistor Elektronische Bauelemente RoHS Compliant Product A suffix of -C specifies halogen and lead free FEATURES TO-92 Power Dissipation PCM 625mW (Ta=25 C) G H 1Emitter 1 1 1 Collector Current ICM 200mA 2Base 2 2 2 Collector Base Voltage V(BR)CBO 60V 3Collector 3 3 3 J A D CLASSIFICATION OF hFE(1) Mi... See More ⇒
..15. Size:509K jiangsu
2n3904.pdf 

JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD TO-92 Plastic-Encapsulate Transistors 2N3904 TRANSISTOR (NPN) TO-92 FEATURE NPN silicon epitaxial planar transistor for switching and 1. EMITTER Amplifier applications 2. BASE As complementary type, the PNP transistor 2N3906 is Recommended 3. COLLECTOR This transistor is also available in the SOT-23 case wit... See More ⇒
..16. Size:51K kec
2n3904.pdf 

SEMICONDUCTOR 2N3904 TECHNICAL DATA EPITAXIAL PLANAR NPN TRANSISTOR GENERAL PURPOSE APPLICATION. SWITCHING APPLICATION. B C FEATURES Low Leakage Current N DIM MILLIMETERS ICEX=50nA(Max.), IBL=50nA(Max.) A 4.70 MAX E K B 4.80 MAX @VCE=30V, VEB=3V. G C 3.70 MAX D Excellent DC Current Gain Linearity. D 0.45 E 1.00 Low Saturation Voltage F 1.27 G 0.85 VCE(sat)=0.3V(Max.) ... See More ⇒
..17. Size:307K lge
2n3904.pdf 

2N3904(NPN) TO-92 Bipolar Transistors TO-92 1. EMITTER 2. BASE 3. COLLECTOR Features NPN silicon epitaxial planar transistor for switching and Amplifier applications As complementary type, the PNP transistor 2N3906 is Recommended This transistor is also available in the SOT-23 case with the type designation MMBT3904 MAXIMUM RATINGS (TA=25 unless otherwise note... See More ⇒
..18. Size:612K wietron
2n3904.pdf 

2N3904 NPN General Purpose Transistors TO-92 1. EMITTER 1 2 2. BASE 3 3. COLLECTOR ABSOLUTE MAXIMUM RATINGS (Ta=25 C) Rating Symbol Value Unit Collector-Emitter Voltage V CEO 40 Vdc Collector-Base Voltage VCBO 60 Vdc Emitter-Base VOltage VEBO 6.0 Vdc Collector Current IC 200 mAdc PD 625 Total Device Dissipation T =25 C W A Junction Temperature T 150 j C Storage, Tempera... See More ⇒
..19. Size:383K shenzhen
2n3904.pdf 

Shenzhen Tuofeng Semiconductor Technology Co., Ltd 2N3904 NPN SILICON TRANSISTOR NPN GENERAL PURPOSE AMPLIFIER FEATURES * Collector-Emitter Voltage VCEO=40V * Collector Dissipation PC(MAX)=625mW * Complementary to 2N3906 Lead-free 2N3904L Halogen-free 2N3904G ORDERING INFORMATION Ordering Number Pin Assignment Package Packing Normal Lead Free Plating Halogen Fre... See More ⇒
..20. Size:953K blue-rocket-elect
2n3904.pdf 

2N3904 Rev.E Mar.-2016 DATA SHEET / Descriptions TO-92 NPN Silicon NPN transistor in a TO-92 Plastic Package. / Features Low current, Low voltage. / Applications General purpose amplifier. / Equivalent Circuit / Pinning 1 2 3 PIN1 ... See More ⇒
..21. Size:151K semtech
2n3903 2n3904.pdf 

2N3903 / 2N3904 NPN Silicon Epitaxial Planar Transistor for switching and amplifier applications. As complementary types the PNP transistors 2N3905 and 2N3906 are recommended. On special request, these transistors can be manufactured in different pin configurations. 1. Emitter 2. Base 3. Collector TO-92 Plastic Package O Absolute Maximum Ratings (Ta = 25 C) Parameter Symbol... See More ⇒
..22. Size:398K first silicon
2n3904 to92.pdf 

SEMICONDUCTOR 2N3904 TECHNICAL DATA FEATURE NPN silicon epitaxial planar transistor for switching and TO-92 Amplifier applications As complementary type, the PNP transistor 2N3906 is Recommended 1. EMITTER 2. BASE 3. COLLECTOR MAXIMUM RATINGS (TA=25 unless otherwise noted) 1 2 3 Symbol Parameter Value Units VCBO Collector-Base Voltage 60 V VCEO Collector-Emi... See More ⇒
..23. Size:1716K slkor
2n3904.pdf 

2N3904 / Descriptions TO-92 NPN Silicon NPN transistor in a TO-92 Plastic Package. / Features / Applications Low current, Low voltage. General purpose amplifier. / Equivalent Circuit / Pinning 1 2 3 PIN1 Collector PIN 2 Base PIN 3 Emitter ... See More ⇒
..26. Size:159K cn shenzhen jingyang
2n3903 2n3904.pdf 

TITAN MICRO TITAN MICRO 2N3903 / 2N3904 NPN Silicon Epitaxial Planar Transistor for switching and amplifier applications. As complementary types the PNP transistors 2N3905 and 2N3906 are recommended. On special request, these transistors can be manufactured in different pin configurations. 1. Emitter 2. Base 3. Collector TO-92 Plastic Package O Absolute Maximum Ratings (Ta... See More ⇒
0.1. Size:478K onsemi
2n3904bu 2n3904ta 2n3904tar 2n3904tf 2n3904tfr mmbt3904 pzt3904.pdf 

Is Now Part of To learn more about ON Semiconductor, please visit our website at www.onsemi.com Please note As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers will need to change in order to meet ON Semiconductor s system requirements. Since the ON Semiconductor product management systems do not have the ability to manage part nomenclatur... See More ⇒
0.2. Size:186K auk
2n3904n.pdf 

2N3904N Semiconductor Semiconductor NPN Silicon Transistor Descriptions General small signal application Switching application Features Low collector saturation voltage VCE(sat)=0.3V(MAX.) @ IC=50mA, IB=5mA Low collector output capacitance Cob = 3pF(Typ.) @ VCB=5V, IE=0, f=1MHz Complementary pair with STA3906A Ordering Information Type NO. Mark... See More ⇒
0.3. Size:86K semelab
2n3904-t18.pdf 

2N3904-T18 MECHANICAL DATA Dimensions in mm (inches) 5.84 (0.230) 5.31 (0.209) 4.95 (0.195) 4.52 (0.178) GENERAL PURPOSE HERMETIC NPN SILICON TRANSISTOR FEATURES SILICON NPN EPITAXIAL TRANSISTOR 0.48 (0.019) HERMETIC TO18 PACKAGE 0.41 (0.016) dia. HI-REL SCREENING OPTIONS AVAILABLE HIGH SPEED SATURATED SWITCHING 2.54 (0.100) Nom. APPLICATIONS A h... See More ⇒
0.4. Size:92K kec
2n3904v.pdf 

SEMICONDUCTOR 2N3904V TECHNICAL DATA EPITAXIAL PLANAR NPN TRANSISTOR GENERAL PURPOSE APPLICATION. SWITCHING APPLICATION. E B FEATURES Low Leakage Current DIM MILLIMETERS 2 _ ICEX=50nA(Max.), IBL=50nA(Max.) A 1.2 +0.05 _ B 0.8 +0.05 @VCE=30V, VEB=3V. 1 3 _ C 0.5 + 0.05 _ D 0.3 + 0.05 Excellent DC Current Gain Linearity. _ E 1.2 + 0.05 Low Saturation Voltage _ G 0.8 0.05... See More ⇒
0.5. Size:91K kec
2n3904e.pdf 

SEMICONDUCTOR 2N3904E TECHNICAL DATA EPITAXIAL PLANAR NPN TRANSISTOR GENERAL PURPOSE APPLICATION. SWITCHING APPLICATION. E B DIM MILLIMETERS FEATURES _ + A 1.60 0.10 D Low Leakage Current _ + 2 B 0.85 0.10 _ + C 0.70 0.10 ICEX=50nA(Max.), IBL=50nA(Max.) 3 1 D 0.27+0.10/-0.05 _ @VCE=30V, VEB=3V. E 1.60 0.10 + _ + 1.00 0.10 G Excellent DC Current Gain Linearity. H ... See More ⇒
0.6. Size:657K kec
2n3904a.pdf 

SEMICONDUCTOR 2N3904A TECHNICAL DATA EPITAXIAL PLANAR NPN TRANSISTOR GENERAL PURPOSE APPLICATION. SWITCHING APPLICATION. B C FEATURES Low Leakage Current N DIM MILLIMETERS ICEX=50nA(Max.), IBL=50nA(Max.) A 4.70 MAX E K B 4.80 MAX @VCE=30V, VEB=3V. G C 3.70 MAX D Low Saturation Voltage D 0.45 E 1.00 VCE(sat)=0.3V(Max.) @IC=50mA, IB=5mA. F 1.27 G 0.85 Low Collector Outp... See More ⇒
0.7. Size:73K kec
2n3904c.pdf 

SEMICONDUCTOR 2N3904C TECHNICAL DATA EPITAXIAL PLANAR NPN TRANSISTOR GENERAL PURPOSE APPLICATION. SWITCHING APPLICATION. B C FEATURES Low Leakage Current N DIM MILLIMETERS ICEX=50nA(Max.), IBL=50nA(Max.) A 4.70 MAX E K B 4.80 MAX @VCE=30V, VEB=3V. G C 3.70 MAX D Excellent DC Current Gain Linearity. D 0.45 E 1.00 Low Saturation Voltage F 1.27 G 0.85 VCE(sat)=0.3V(Ma... See More ⇒
0.8. Size:685K kec
2n3904s.pdf 

SEMICONDUCTOR 2N3904S TECHNICAL DATA EPITAXIAL PLANAR NPN TRANSISTOR GENERAL PURPOSE APPLICATION. SWITCHING APPLICATION. E L B L DIM MILLIMETERS FEATURES _ + A 2.93 0.20 B 1.30+0.20/-0.15 Low Leakage Current C 1.30 MAX 2 3 D 0.40+0.15/-0.05 ICEX=50nA(Max.), IBL=50nA(Max.) E 2.40+0.30/-0.20 1 @VCE=30V, VEB=3V. G 1.90 H 0.95 Excellent DC Current Gain Linearity. J 0.13+... See More ⇒
0.9. Size:51K kec
2n3904u.pdf 

SEMICONDUCTOR 2N3904U TECHNICAL DATA EPITAXIAL PLANAR NPN TRANSISTOR GENERAL PURPOSE APPLICATION. SWITCHING APPLICATION. E M B M DIM MILLIMETERS FEATURES _ A + 2.00 0.20 D 2 Low Leakage Current _ + B 1.25 0.15 _ + C 0.90 0.10 ICEX=50nA(Max.), IBL=50nA(Max.) 3 1 D 0.3+0.10/-0.05 _ E + 2.10 0.20 @VCE=30V, VEB=3V. G 0.65 Excellent DC Current Gain Linearity. H 0.15+0... See More ⇒
0.10. Size:699K kec
2n3904sc.pdf 

SEMICONDUCTOR 2N3904SC TECHNICAL DATA EPITAXIAL PLANAR NPN TRANSISTOR GENERAL PURPOSE APPLICATION. SWITCHING APPLICATION. FEATURES Low Leakage Current ICEX=50nA(Max.), IBL=50nA(Max.) @VCE=30V, VEB=3V. Excellent DC Current Gain Linearity. Low Saturation Voltage VCE(sat)=0.3V(Max.) @IC=50mA, IB=5mA. Complementary to 2N3906SC. MAXIMUM RATING (Ta=25 ) CHARACTERISTIC SYMB... See More ⇒
0.11. Size:50K hsmc
h2n3904.pdf 

Spec. No. HE6218 HI-SINCERITY Issued Date 1992.11.25 Revised Date 2005.01.14 MICROELECTRONICS CORP. Page No. 1/5 H2N3904 NPN EPITAXIAL PLANAR TRANSISTOR Description The H2N3904 is designed for general purpose switching and amplifier applications. TO-92 Absolute Maximum Ratings Maximum Temperatures Storage Temperature......................................................... See More ⇒
0.12. Size:227K first silicon
2n3904s.pdf 

SEMICONDUCTOR 2N3904S TECHNICAL DATA General Purpose Transistor We declare that the material of product compliance with RoHS requirements. ORDERING INFORMATION Device Marking Shipping 3 2N3904S 1AM 3000/Tape & Reel 2 1 MAXIMUM RATINGS SOT 23 Rating Symbol Value Unit Collector Emitter Voltage VCEO 40 Vdc Collector Base Voltage VCBO 60 Vdc 3 COLLECTOR Emitter Base Vo... See More ⇒
0.13. Size:398K first silicon
2n3904g.pdf 

SEMICONDUCTOR 2N3904 TECHNICAL DATA FEATURE NPN silicon epitaxial planar transistor for switching and TO-92 Amplifier applications As complementary type, the PNP transistor 2N3906 is Recommended 1. EMITTER 2. BASE 3. COLLECTOR MAXIMUM RATINGS (TA=25 unless otherwise noted) 1 2 3 Symbol Parameter Value Units VCBO Collector-Base Voltage 60 V VCEO Collector-Emi... See More ⇒
0.14. Size:201K first silicon
2n3904u.pdf 

SEMICONDUCTOR 2N3904U TECHNICAL DATA General Purpose Transistor We declare that the material of product compliance with RoHS requirements. ORDERING INFORMATION 3 Device Marking Shipping AM 2N3904U 3000/Tape & Reel 1 2 SC-70 / SOT 323 MAXIMUM RATINGS Rating Symbol Value Unit Collector Emitter Voltage VCEO 40 Vdc 3 COLLECTOR Collector Base Voltage VCBO 60 Vdc 1 Emi... See More ⇒
0.15. Size:1481K cn cbi
2n3904u.pdf 

Plastic-Encapsulate Transistors TRANSISTOR (NPN) FEATURES U Compliment to 2N3906 Low current Low voltage MARKING 1A MAXIMUM RATINGS (Ta=25 unless otherwise noted) Symbol Parameter Value Unit VCBO Collector-Base Voltage 60 V VCEO Collector-Emitter Voltage 40 V VEBO Emitter-Base Voltage 6 V IC Collector Current -Continuous 0.2 A PC Collector Power Dissipation 0.... See More ⇒
Detailed specifications: 2N389A-1
, 2N38A
, 2N39
, 2N3900
, 2N3900A
, 2N3901
, 2N3902
, 2N3903
, B772
, 2N3904CSM
, 2N3904DCSM
, 2N3905
, 2N3905CSM
, 2N3906
, 2N3906CSM
, 2N3907
, 2N3908
.
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