BUX48A NPN bipolar transistor, 450V VCEO, 15A IC, 175W dissipation. Suitable for switching power supplies and industrial applications.
Mfr Part #:

BUX48A

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
NPN bipolar transistor, 450V VCEO, 15A IC, 175W dissipation. Suitable for switching power supplies and industrial applications.
Total Stock: 202 pcs
$ Price Range: $1.43

BUX48A 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
2 pcs
2 pcs On Request 1 On Request On Request On Request On Request On Request

BUX48A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Base Current
Base Peak Current
Collector Current
Collector Peak Current
Collector Peak Current (non repetitive)
Current
Emitter Cut-off Current
ICER (Maximum @ VCE = rated VCER)
ICER (Maximum @ VCE = rated VCER, Tc = 125 °C)
ICES (Maximum @ VCE = rated VCES)
ICES (Maximum @ VCE = rated VCES, Tc = 125 °C)
Mounting Type
Operating Temperature
Power
Ptot (Maximum @ TC=25 °C)
Rthj-case (Maximum)
Storage Temperature
Supplier Device Package
TSTG (Minimum/Maximum)
Tape & Reel
Tj (Maximum)
Transistor Type
VBE(sat) (Maximum @ IC = 8 A, IB = 1.6 A)
VCE(sat) (Maximum @ IC = 12 A, IB = 2.4 A)
VCE(sat) (Maximum @ IC = 15 A, IB = 3 A)
VCE(sat) (Maximum @ IC = 15 A, IB = 4 A)
VCE(sat) (Maximum @ IC = 8 A, IB = 1.6 A)
VCEO (Maximum)
VCEO(SUS) (Minimum @ IC = 200 mA, L = 25 mH)
VCER (Maximum)
VCES (Maximum)
VEBO (Maximum)
VEBO (Minimum @ IE = 50 mA)
Vbe(sat) (Maximum @ Ic=10 A, Ib=2 A)
Vce Saturation (Max) @ Ib, Ic
Vce(sat) (Maximum @ Ic=10 A, Ib=2 A)
Voltage
tf (Maximum @ VCC = 150 V, IC = 10 A, IB 1 = -IB 2 = 2 A)
tf (Maximum @ VCC = 150 V, IC = 8 A, IB 1 = -IB 2 = 1.6 A)
ton (Maximum @ VCC = 150 V, IC = 10 A, IB 1 = 2 A)
ton (Maximum @ VCC = 150 V, IC = 8 A, IB 1 = 1.6 A)
ts (Maximum @ VCC = 150 V, IC = 10 A, IB 1 = -IB 2 = 2 A)
ts (Maximum @ VCC = 150 V, IC = 8 A, IB 1 = -IB 2 = 1.6 A)

BUX48A Description

Short technical summary and product information.

The BUX48A is a high power NPN silicon transistor from STMicroelectronics, designed for switching and industrial applications. It features a collector-emitter voltage (VCEO) of 450V, a continuous collector current of 15A, and a peak current of 30A. The device offers a total power dissipation of 175W (TO-3 package) and a maximum junction temperature of 200°C. The transistor is available in a TO-3 metal case, providing robust thermal performance. It is particularly intended for switch mode power supplies, flyback and forward single transistor low power converters. The BUX48A has fast switching speeds with typical turn-on time of 1µs and fall time of 0.8µs. The device is RoHS3 compliant and REACH unaffected (unverified).

BUX48A Quick Information

Product Type: NPN Bipolar Transistor
Canonical Name: STMicroelectronics BUX48A NPN Bipolar Transistor
Subcategory: Single NPN

BUX48A Compliance

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

BUX48A Estimated Pricing

Qty Low High
300+ $1.43 $1.43

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

BUX48A Features

  • High voltage NPN transistor rated 450V VCEO.
  • Continuous collector current up to 15A.
  • Fast switching with 0.8µs fall time.
  • Power dissipation of 175W in TO-3 package.
  • Suitable for switch mode power supplies.

BUX48A Applications

  • Used in switch mode power supplies.
  • Ideal for flyback converter circuits.
  • Suitable for forward converter topologies.
  • Applied in industrial switching systems.

BUX48A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter voltage rating of the BUX48A?

The BUX48A has a VCEO of 450V and a VCER of 1000V.

What package is the BUX48A available in?

The BUX48A is available in a TO-3 metal case (TO-204AA).

What is the maximum operating junction temperature?

The maximum operating junction temperature is 200°C for the TO-3 package.

Is the BUX48A RoHS compliant?

The BUX48A is listed as RoHS3 compliant, but this is unverified.

What is the maximum collector current?

The maximum continuous collector current is 15A, with peak current of 30A.

What is the power dissipation of the BUX48A?

The total power dissipation is 175W at case temperature 25°C for the TO-3 package.

What are the switching speeds of the BUX48A?

Turn-on time is 1µs, storage time is 3µs, and fall time is 0.8µs.

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