BD437S The BD437S is an NPN bipolar junction transistor from On Semiconductor, rated for 45V collector-emitter voltage and 4A collector current. It comes in a TO-126-3 through-hole package.
Mfr Part #:

BD437S

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
The BD437S is an NPN bipolar junction transistor from On Semiconductor, rated for 45V collector-emitter voltage and 4A collector current. It comes in a TO-126-3 through-hole package.
Total Stock: 400 pcs
$ Price Range: $0.38

BD437S 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
200 pcs
200 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
200 pcs
200 pcs On Request 1 On Request On Request On Request On Request On Request

BD437S Specifications Quick View

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

BD437S Description

Short technical summary and product information.

The BD437S is an NPN bipolar junction transistor manufactured by ON Semiconductor. It has a maximum collector-emitter breakdown voltage of 45V and a maximum collector current of 4A. The device can dissipate up to 36W of power and has a transition frequency of 3MHz. The minimum DC current gain (hFE) is 30 at 10mA collector current and 5V collector-emitter voltage. The collector-emitter saturation voltage is typically 600mV at 200mA base current and 2A collector current.

 

The transistor is designed for through-hole mounting and is available in a TO-225AA / TO-126-3 package. The supplier device package is TO-126-3. It operates with a maximum junction temperature of 150°C. Per existing data, the BD437S is RoHS3 compliant, REACH unaffected, and has an MSL of 1 (unlimited).

 

This transistor is suitable for general-purpose switching and amplifier applications, including power management, audio amplification, and motor control circuits. Its robust current and voltage ratings make it a versatile component for various electronic designs.

BD437S Quick Information

Product Type: Bipolar Junction Transistor (BJT)
Canonical Name: BD437S NPN Bipolar Transistor
Subcategory: NPN Bipolar Transistor

BD437S Compliance

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

BD437S Estimated Pricing

Qty Low High
791+ $0.38 $0.38

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

BD437S Features

  • NPN transistor for general purpose switching.
  • Rated for 45V collector-emitter breakdown.
  • Maximum collector current of 4A.
  • Power dissipation up to 36W.
  • Through-hole package TO-126-3.

BD437S Applications

  • Used in power switching circuits.
  • Ideal for audio amplification stages.
  • Suitable for motor driver interfaces.
  • Applicable in DC-DC converter designs.

BD437S FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the BD437S?

45V.

What package is the BD437S available in?

TO-126-3 (through-hole).

What is the maximum junction temperature of the BD437S?

150°C.

Is the BD437S RoHS compliant?

Yes, RoHS3 compliant per existing data.

What is the maximum collector current of the BD437S?

4A.

What is the minimum DC current gain (hFE) of the BD437S?

30 at 10mA collector current and 5V collector-emitter voltage.

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