# 2N3904TFR (Component)
## Description
Bipolar (BJT) Transistor NPN 40V 200 mA 300MHz 625 mW Through Hole TO-92-3
The 2N3904TFR is a general-purpose NPN bipolar junction transistor (BJT) designed for low-power amplification and switching applications. It is widely used in signal processing, small-signal amplification, and digital switching circuits. This transistor offers fast switching speed, low saturation voltage, and reliable performance in a compact surface-mount package, making it suitable for consumer electronics, industrial controls, and embedded systems.
Manufacturer
Various (commonly ON Semiconductor / onsemi, Diodes Inc., Central Semiconductor)
Part Number
2N3904TFR
Transistor Type
NPN Bipolar Junction Transistor (BJT)
Configuration
Single
Package / Case
SOT-23 (TO-236AB)
Mounting Style
Surface Mount (SMD/SMT)
Collector-Emitter Voltage (VCEO)
40 V
Collector-Base Voltage (VCBO)
60 V
Emitter-Base Voltage (VEBO)
6 V
Collector Current (IC)
200 mA (max)
Power Dissipation (PD)
~200 mW to 350 mW (package dependent)
DC Current Gain (hFE)
100 to 300 (typical, varies with operating conditions)
Transition Frequency (fT)
~300 MHz
Collector-Emitter Saturation Voltage (VCE(sat))
~0.2 V (typical at IC = 10 mA, IB = 1 mA)
Operating Temperature Range
-55°C to +150°C
Polarity
NPN
Packaging
Tape & Reel (TFR suffix)
RoHS Compliance
Compliant
#commonpartslibrary #transistor #bjt
## Component Details
- **Owner:** adrian95
- **Created:** 9/21/2023
- **Last Updated:** 4/19/2026
- **Visibility:** Public
- **Part Type:** Transistor
- **Manufacturer Name:** onsemi
- **License:** https://creativecommons.org/licenses/by/4.0/
- **Manufacturer Part Number:** 2N3904TFR
- **Datasheet URL:** https://www.onsemi.com/pdf/datasheet/pzt3904-d.pdf
- **Used in:** 832 projects
- **Stars:** 1
- **Forks:** 1
## Distributor Pricing (qty 1)
*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*
| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Arrow](https://www.arrow.com/en/products/2n3904tfr/on-semiconductor.html?utm_currency=USD®ion=nac) | $0.043 | 23K |
| [Digi-Key](https://www.digikey.com/en/products/detail/rochester-electronics-llc/2N3904TFR/13454953) | $0.35 | 41K |
| [LCSC](https://www.lcsc.com/product-detail/C258185.html) | N/A | N/A |
| [Mouser](https://www.mouser.com/ProductDetail/onsemi/2N3904TFR?qs=vLO1xFsx9THvDBmrPVYz9Q%3D%3D) | $0.10 | 109K |
| [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=2N3904TFR) | $0.17 | 2K |
| [Verical](https://www.verical.com/pd/on-semiconductor-bjt---general-purpose-2N3904TFR-10191101?utm_currency=USD) | N/A | N/A |
- **Part Type:** Transistors
- **Sub-Type:** NPN
- **Manufacturer:** ON Semiconductor
- **MPN:** 2N3904TFR
- **Mount Type:** Surface Mount
- **Package / Case Code:** SOT-23-6
- **Pin Count:** 3
- **Compliance:** Rohs
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | C | |
| 2 | B | |
| 3 | E | |
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*Generated from [https://www.flux.ai/adrian95/2n3904tfr~zdc](https://www.flux.ai/adrian95/2n3904tfr~zdc)*