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BD140 The BD140 is a PNP epitaxial silicon bipolar transistor with -80V collector-emitter voltage and -1.5A collector current. It is housed in a TO-126-3 (SOT-32-3) through-hole package.
Mfr Part #:

BD140

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The BD140 is a PNP epitaxial silicon bipolar transistor with -80V collector-emitter voltage and -1.5A collector current. It is housed in a TO-126-3 (SOT-32-3) through-hole package.
✓ Total Stock: 65,420 pcs
$ Price Range: $0.15 - $1.23

BD140 Available from 2 distributors

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✓ Non-Authorised
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62,100 pcs
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62100 pcs On Request 1 On Request On Request On Request On Request On Request
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3,320 pcs
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3320 pcs On Request 1 On Request On Request On Request On Request On Request
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BD140 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Mounting Type
Operating Temperature
Power
Supplier Device Package
Tape & Reel
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage
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BD140 Description

Short technical summary and product information.

The BD140 is a PNP epitaxial silicon bipolar transistor manufactured by STMicroelectronics, part of the BD136 series. It is designed for general-purpose switching and amplification applications requiring medium power handling. The device offers a maximum collector-emitter voltage (VCEO) of -80V and a continuous collector current rating of -1.5A, with a peak pulse current capability of -3A.

 

Key electrical characteristics include a DC current gain (hFE) of 63 to 160 at Ic=-150mA and Vce=-2V for the BD14010 variant, with minimum gain of 25 at both low (5mA) and high (500mA) current levels. The collector-emitter saturation voltage is maximum -0.5V at Ib=-50mA and Ic=-500mA, ensuring low on-state losses. Maximum power dissipation is 1.25W at ambient temperature (25°C) and 12.5W at case temperature (25°C). The junction operating temperature can reach up to 150°C, with a storage range of -55°C to 150°C.

 

The transistor is available in a TO-126-3 through-hole package (also designated SOT-32-3 and TO-225AA), making it suitable for traditional PCB mounting. It is a complementary companion to the NPN transistors BD135, BD137, and BD139. The BD140 is commonly used in audio output stages, driver circuits, and medium-power linear applications.

BD140 Quick Information

Product Type: Bipolar Transistor - PNP
Series: BD140
Canonical Name: BD140 – PNP Epitaxial Silicon Transistor, TO-126-3
Subcategory: Single PNP Transistors

BD140 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BD140 Estimated Pricing

Qty Low High
1+ $1.23 $1.23
10+ $0.88 $0.88
100+ $0.62 $0.62
500+ $0.38 $0.38
1,000+ $0.28 $0.28
2,500+ $0.25 $0.25
6,000+ $0.22 $0.22
12,000+ $0.19 $0.19
30,000+ $0.15 $0.15

Estimated market price range - modelled values for guidance only, not live distributor offers.

BD140 Features

  • PNP epitaxial silicon bipolar transistor.
  • Rated for -80V collector-emitter voltage.
  • Supports up to -1.5A continuous collector current.
  • Maximum power dissipation of 12.5W.
  • Through-hole TO-126-3 (SOT-32-3) package.

BD140 Applications

  • Complement to BD135, BD137, BD139 NPN transistors.
  • Used in audio amplifier output stages.
  • Suitable for medium-power switching applications.
  • Ideal for driver circuits in industrial controls.

BD140 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter voltage rating of the BD140?

The maximum collector-emitter voltage (VCEO) is -80V.

What is the maximum collector current of the BD140?

The maximum continuous collector current is -1.5A, with a pulse current rating of -3A.

What package does the BD140 come in?

It is available in a TO-126-3 through-hole package, also known as SOT-32-3 and TO-225AA.

What is the operating temperature range of the BD140?

The maximum junction operating temperature is 150°C, and the storage temperature range is -55°C to 150°C.

Is the BD140 RoHS compliant?

The component is marked as RoHS3 compliant, but this compliance status is unverified and should be confirmed with the manufacturer.

What is the DC current gain (hFE) of the BD140?

For the BD14010 variant, hFE is 63 to 160 at Ic=-150mA and Vce=-2V. Minimum hFE is 25 at Ic=-5mA and Ic=-500mA.

What is the collector-emitter saturation voltage of the BD140?

The maximum saturation voltage is -0.5V at Ib=-50mA and Ic=-500mA.

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