BD243C The BD243C is an NPN silicon power transistor from STMicroelectronics rated for 100V collector-emitter voltage and 6A collector current. It comes in a TO-220 package with 65W power dissipation capability.
Mfr Part #:

BD243C

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The BD243C is an NPN silicon power transistor from STMicroelectronics rated for 100V collector-emitter voltage and 6A collector current. It comes in a TO-220 package with 65W power dissipation capability.
Total Stock: 20,182 pcs
$ Price Range: $0.48

BD243C Available from 2 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
17,498 pcs
17498 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
2,684 pcs
2684 pcs On Request 1 On Request On Request 10+ On Request On Request

BD243C Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Base Current (IB)
Base-Emitter Voltage (VBE)
Collector Cutoff Current (Maximum @ Ib = 0, Vce = 60 V)
Collector Cutoff Current (Maximum @ Vbe = 0, Vce = rated Vceo)
Collector Peak Current (ICM)
Collector-Base Voltage (VCBO)
Current
DC Current Gain (Minimum @ Ic = 0.3 A, Vce = 4 V)
DC Current Gain (hFE) (Min) @ Ic, Vce
Emitter Cut-off Current (IEBO)
Emitter-Base Voltage (VEBO)
Mounting Type
Operating Temperature
Power
SVHC Present
Storage Temperature (Tstg)
Supplier Device Package
Tape & Reel
Thermal Resistance Junction-Ambient (Rthj-amb)
Thermal Resistance Junction-Case (Rthj-case)
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

BD243C Description

Short technical summary and product information.

The BD243C is an NPN silicon epitaxial-base power transistor manufactured by STMicroelectronics. It is designed for medium power linear and switching applications, offering a collector-emitter voltage rating of 100V and a continuous collector current of 6A (10A peak). The device dissipates up to 65W at case temperatures up to 25°C, making it suitable for power control circuits.

 

Key electrical characteristics include a DC current gain (hFE) of 30 minimum at 0.3A collector current and 15 minimum at 3A, with a collector-emitter saturation voltage of 1.5V maximum at 6A. The transistor operates at junction temperatures up to 150°C and has a storage temperature range of -65°C to 150°C. Thermal resistance is rated at 1.92°C/W junction-to-case and 62.5°C/W junction-to-ambient.

 

The BD243C is mounted in a standard TO-220-3 through-hole package, suitable for PCB mounting with a heatsink for high-power applications. It is the complementary NPN type to the BD244C PNP transistor, allowing use in push-pull and bridge configurations. The device is intended for medium power linear amplifiers, switching regulators, and motor control circuits.

BD243C Quick Information

Product Type: Bipolar Junction Transistor (BJT)
Series: BD243C
Canonical Name: BD243C NPN Silicon Power Transistor
Subcategory: Single BJT

BD243C Compliance

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

BD243C Estimated Pricing

Qty Low High
2,000+ $0.48 $0.48

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

BD243C Features

  • NPN silicon power transistor for medium power applications.
  • Rated for 100V collector-emitter voltage and 6A current.
  • Dissipates up to 65W at 25°C case temperature.
  • TO-220 through-hole package for easy mounting.
  • Complementary to BD244C PNP transistor type.

BD243C Applications

  • Used in medium power linear amplifier circuits.
  • Suitable for switching regulator power stages.
  • Ideal for motor control and driver circuits.
  • Works in push-pull audio output stages.

BD243C FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the BD243C?

The maximum collector-emitter voltage (VCEO) is 100V.

What is the maximum collector current of the BD243C?

The maximum continuous collector current is 6A, with a peak current of 10A.

What is the power dissipation rating of the BD243C?

The total power dissipation is 65W at case temperature up to 25°C.

What package is the BD243C available in?

The BD243C is available in a TO-220-3 through-hole package.

What is the operating junction temperature range of the BD243C?

The maximum operating junction temperature is 150°C, with storage temperature from -65°C to 150°C.

Is the BD243C RoHS compliant?

The RoHS status is listed as RoHS3 compliant, but this is unverified and should be confirmed with the manufacturer.

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