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BD437 BD437 is an NPN bipolar junction transistor with 45V collector-emitter voltage, 4A collector current, and 36W power dissipation. Through-hole mounting in TO-225AA/TO-126-3 package.
Mfr Part #:

BD437

Available from 3 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
BD437 is an NPN bipolar junction transistor with 45V collector-emitter voltage, 4A collector current, and 36W power dissipation. Through-hole mounting in TO-225AA/TO-126-3 package.
✓ Total Stock: 23,087 pcs
$ Price Range: $0.29 - $1.34

BD437 Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Fe Components ✓
Non-Authorised Inventory information
18,050 pcs
On Request
18050 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
5,020 pcs
On Request
5020 pcs On Request 1 On Request On Request On Request On Request On Request
Partservice ✓
Non-Authorised Inventory information
17 pcs
On Request
17 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

BD437 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Frequency
Mounting Type
Operating Temperature
Power
Supplier Device Package
Tape & Reel
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage
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BD437 Description

Short technical summary and product information.

The BD437 is an NPN bipolar junction transistor designed for general-purpose switching and amplification. It features a collector-emitter voltage rating of 45V and a continuous collector current of 4A, with a power dissipation of 36W. The DC current gain (hFE) is a minimum of 30 at 10mA collector current and 5V Vce. The collector-emitter saturation voltage is 600mV maximum at 200mA base current and 2A collector current. The transition frequency is 3MHz. The device is housed in a through-hole TO-225AA/TO-126-3 package and is also available as supplier device package SOT-32-3. The operating junction temperature range extends up to 150°C. This transistor is suitable for medium-power linear and switching applications, including driver stages and power management circuits.

BD437 Quick Information

Product Type: Bipolar (BJT) Single Transistor
Canonical Name: BD437 NPN Bipolar Transistor
Subcategory: Single

BD437 Compliance

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

BD437 Estimated Pricing

Qty Low High
1+ $1.34 $1.34
10+ $0.63 $0.63
100+ $0.49 $0.49
500+ $0.41 $0.41
1,000+ $0.37 $0.37
2,000+ $0.33 $0.33
4,000+ $0.30 $0.30
12,000+ $0.30 $0.30
24,000+ $0.29 $0.29

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

BD437 Features

  • 45V collector-emitter voltage rating.
  • 4A continuous collector current.
  • 36W power dissipation capability.
  • Through-hole mounting for easy assembly.
  • 3MHz transition frequency for switching.

BD437 Applications

  • General purpose switching and amplification.
  • Medium power linear applications.
  • Suitable for driver stages.
  • Power management circuits.

BD437 FAQs

3 frequently asked questions generated from this part’s specifications.
What is the operating junction temperature of the BD437?

The BD437 has a maximum operating junction temperature of 150°C (TJ).

What package options are available for the BD437?

The BD437 is available in TO-225AA and TO-126-3 through-hole packages, with a supplier device package of SOT-32-3.

Is the BD437 RoHS compliant?

The BD437 is claimed to be RoHS3 compliant, but this information is unverified.

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