STMicroelectronics BD681 NPN Darlington Transistor, 4 A 100 V HFE:750, 3-Pin SOT-32

View all Darlington Pairs
Bulk discount available

Subtotal (1 unit)*

£1.10

(exc. VAT)

£1.32

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • 124 unit(s) ready to ship
  • Plus 148 unit(s) ready to ship from another location
  • Plus 10,388 unit(s) shipping from 31 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 - 9£1.10
10 - 99£0.91
100 - 499£0.63
500 - 999£0.55
1000 +£0.47

*price indicative

RS Stock No.:
313-3204
Mfr. Part No.:
BD681
Brand:
STMicroelectronics
Find similar products by selecting one or more attributes.
Select all

Brand

STMicroelectronics

Transistor Type

NPN

Maximum Continuous Collector Current

4 A

Maximum Collector Emitter Voltage

100 V

Maximum Emitter Base Voltage

5 V

Package Type

SOT-32

Mounting Type

Through Hole

Pin Count

3

Transistor Configuration

Single

Number of Elements per Chip

1

Minimum DC Current Gain

750

Maximum Collector Base Voltage

100 V

Maximum Collector Emitter Saturation Voltage

2.5 V

Maximum Collector Cut-off Current

0.2mA

Width

2.7mm

Length

7.8mm

Maximum Operating Temperature

+150 °C

Dimensions

7.8 x 2.7 x 10.8mm

Height

10.8mm

Minimum Operating Temperature

-65 °C

NPN Darlington Transistors, STMicroelectronics



Bipolar Transistors, STMicroelectronics


A broad range of NPN and PNP Bipolar Transistors from STMicroelectronics including General Purpose, Darlington, Power and High-Voltage devices in both SMT and Through-hole packages.

Related links