2N3904BU

onsemi 2N3904BU 40V 200mA General-Purpose NPN Transistor TO-92

  • Manufacturer: onsemi
  • Manufacturer Part Number (MPN): 2N3904BU
  • Product Category: NPN Bipolar Transistor
  • Series: 2N3904
  • Package / Case: TO-92-3
  • Mounting Type: Through Hole
  • RoHS Status: RoHS Compliant
  • Lifecycle Status: Active
  • Availability: Request a Quote
  • Lead Time: Contact Sales
  • Shipping Method: DHL / FedEx / UPS

The onsemi 2N3904BU is a general-purpose NPN bipolar junction transistor rated for 40V collector-emitter voltage and 200mA collector current. Its through-hole TO-92 package suits low-power switching, signal amplification, driver stages, oscillators, sensor interfaces, educational circuits, and general consumer or industrial electronics.

Product Specifications

Specification Details
Manufacturer onsemi
Manufacturer Part Number 2N3904BU
Product Category NPN Bipolar Transistor
Series 2N3904
Transistor Polarity NPN
Collector-Emitter Voltage 40V
Collector Current 200mA
Power Dissipation 625mW
DC Current Gain 100 to 300 at 10mA
Package / Case TO-92-3
Mounting Type Through Hole
Product Status Active
RoHS Status RoHS Compliant
Packaging Tube / Bulk

Fast Global Delivery

Sample Availability

12-Month Warranty

Multi-Brand Sourcing

Our Sourcing Capabilities

Global Component Sourcing

We work with established supply channels across different regions to help customers source commonly used, shortage, and long lead-time electronic components.

BOM Management Support

Our team reviews manufacturer part numbers, quantities, packaging requirements, and availability to prepare consolidated quotations for multi-brand BOMs.

Part Verification

Before order confirmation, we check key product information such as manufacturer, part number, package, lifecycle status, and requested documentation.

Quality Inspection

Components can be reviewed for packaging, labels, markings, appearance, and shipping condition before delivery.

Alternative Part Support

When an original component is unavailable, we help identify possible alternatives based on specifications, package type, and application requirements.

Flexible Procurement Support

We support engineering samples, small quantities, maintenance requirements, and ongoing production purchasing.

Shopping Guide

1. Send Your Part Number

Provide the manufacturer part number, required quantity, packaging preference, and target delivery date.

2. Confirm Specifications

Our team reviews the part number, package, technical specifications, lifecycle status, and order requirements.

3. Receive a Quotation

We prepare a quotation based on current availability, quantity, packaging, lead time, and delivery destination.

4. Review Availability and Lead Time

Confirm the available quantity, estimated lead time, shipping method, and other order details.

5. Delivery and Support

Your order is prepared for shipment, with continued communication and after-sales support when required.

Shopping Guide

Related Product

MBR20100CT
BM20B 0.8 20DS 0.4V 53
10118194 0001LF
EEU FR1V471
1N4007 E3 54

Can't Find The Components You Need?

Submit your RFQ and our team will get back to you within 24 hours.

Need Help?

Request a Quote

Send us your part numbers, quantities, or BOM details.Our team will respond with availability, lead time, and pricing.

Contact Us

Maximum file size: 516MB