DistyParts Icon
BST40 The BST40 is an NPN Silicon Planar High Voltage Transistor from Nexperia USA Inc. It features a 300V Collector-Base Voltage and 500mA Continuous Collector Current.
Mfr Part #:

BST40

Available from 1 distributors
Mfr Name: Nexperia USA Inc.
Nexperia USA Inc.
The BST40 is an NPN Silicon Planar High Voltage Transistor from Nexperia USA Inc. It features a 300V Collector-Base Voltage and 500mA Continuous Collector Current.
✓ Total Stock: 5,000 pcs
$ Price Range: $0.40

BST40 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
PROSOFT ELECTRONICS ✓
Non-Authorised Inventory information
5,000 pcs
On Request
5000 pcs On Request 1 On Request On Request 24+ 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.

BST40 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Input Capacitance
Mounting Type
Power Dissipation
SVHC Present
View Similar Products (0)

BST40 Description

Short technical summary and product information.

The BST40 is an NPN Silicon Planar High Voltage Transistor manufactured by Nexperia USA Inc. This component is designed for high voltage applications, offering a Collector-Base Voltage (VCBO) of 300V and a Collector-Emitter Voltage (VCEO) of 250V.

 

Key electrical characteristics include a Continuous Collector Current (IC) of up to 500mA and a Peak Pulse Current (ICM) of 1A. The transistor has a maximum Power Dissipation (Ptot) of 1W at 25°C ambient temperature. It operates within a wide temperature range of -65°C to +150°C.

 

The BST40 is supplied in a SOT-89 package, suitable for surface mounting. Its complementary type is the BST15. Note that this part is obsolete and the FZTA42 is recommended as a replacement.

BST40 Quick Information

Product Type: NPN Silicon Planar High Voltage Transistor
Canonical Name: BST40 NPN Silicon Planar High Voltage Transistor
Subcategory: NPN Silicon Planar High Voltage Transistor

BST40 Compliance

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

BST40 Estimated Pricing

Qty Low High
1+ $0.40 $0.40

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

BST40 Features

  • High voltage NPN silicon planar transistor
  • 300V Collector-Base breakdown voltage
  • 250V Collector-Emitter breakdown voltage
  • 500mA continuous collector current
  • SOT-89 surface mount package

BST40 Applications

  • Ideal for high-voltage switching circuits.
  • Used in flyback converters and line drivers.
  • Suitable for telecom and industrial power supplies.
  • General purpose high-voltage amplifier applications.

BST40 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter breakdown voltage (VCEO) of the BST40?

The minimum collector-emitter breakdown voltage is 250V at IC=1mA, IB=0.

What is the collector-base breakdown voltage (VCBO) of the BST40?

The minimum collector-base breakdown voltage is 300V at IC=100μA, IE=0.

What is the maximum continuous collector current (IC) of the BST40?

The maximum continuous collector current is 500mA.

What is the package type of the BST40?

The BST40 is packaged in a surface-mount SOT-89 package.

What is the transition frequency (fT) of the BST40?

The minimum transition frequency is 70MHz at IC=10mA, VCE=10V, f=5MHz.

Is the BST40 obsolete?

Yes, the BST40 is an obsolete part and no longer available.

What is the recommended replacement for the BST40?

The recommended replacement is the FZTA42 from Nexperia USA Inc.

Home
Account

Categories