BUT11A The BUT11A is an NPN power transistor from On Semiconductor, rated for 450V collector-emitter voltage and 5A collector current. It comes in a TO-220-3 through-hole package and is designed for fast-switching applications.
Mfr Part #:

BUT11A

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The BUT11A is an NPN power transistor from On Semiconductor, rated for 450V collector-emitter voltage and 5A collector current. It comes in a TO-220-3 through-hole package and is designed for fast-switching applications.
Total Stock: 994 pcs
$ Price Range: $0.81 - $2.75

BUT11A Available from 1 distributor

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BUT11A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Base - Emitter Saturation Voltage
Base Current
Base Peak Current
Collector Cutoff Current (Maximum @ VBE = 0 V, VCE = rated VCES)
Collector Cutoff Current (Maximum @ VBE = 0 V, VCE = rated VCES, Tc = 125 °C)
Collector Emitter Voltage (Maximum @ VBE = 0 V)
Collector Peak Current
Collector-Emitter Sustaining Voltage
Current
DC Current Gain (Minimum/Typical @ IC = 0.5 A, VCE = 5 V)
DC Current Gain (Minimum/Typical @ IC = 5 mA, VCE = 5 V)
Emitter Cut-off Current
Emitter-Base Voltage
Fall Time
Medical Grade
Mounting Type
Operating Temperature
Power
Power Dissipation (Maximum @ TC=25 °C)
Storage Temperature
Storage Temperature (Minimum/Maximum)
Storage Time
Supplier Device Package
Tape & Reel
Thermal Resistance Junction-Case
Transistor Type
Turn On Time
Vce Saturation (Max) @ Ib, Ic
Voltage

BUT11A Description

Short technical summary and product information.

The BUT11A is a high voltage fast-switching NPN power transistor in a TO-220-3 through-hole package. It is a silicon multiepitaxial mesa transistor intended for flyback and forward single transistor low power converters.

 

Key electrical specifications include a maximum collector-emitter voltage (VCEO) of 450V and a collector-emitter voltage with base shorted (VCES) of 1000V. Continuous collector current is rated at 5A with a peak current of 10A. DC current gain (hFE) is minimum 10 at both 5mA and 0.5A collector currents. Switching performance is characterized by typical turn-on time of 1µs, storage time of 4µs, and fall time of 0.8µs.

 

Power dissipation is rated at 83W maximum when the case temperature is maintained at or below 25°C, with a junction-to-case thermal resistance of 1.5°C/W. The maximum operating junction temperature is 150°C. The device is mounted via through-hole to a TO-220-3 package, suitable for heatsinking in power supply designs.

BUT11A Quick Information

Product Type: NPN Power Transistor
Series: BUT11
Canonical Name: BUT11A NPN Power Transistor
Subcategory: NPN Power Transistor

BUT11A Compliance

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

BUT11A Estimated Pricing

Qty Low High
1+ $2.75 $2.75
10+ $1.76 $1.76
100+ $1.20 $1.20
500+ $1.02 $1.02
1,200+ $0.90 $0.90
2,400+ $0.85 $0.85
6,000+ $0.81 $0.81

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

BUT11A Features

  • High voltage NPN power transistor.
  • Fast switching speed for converters.
  • Rated for 450V collector-emitter voltage.
  • 5A continuous collector current.
  • TO-220-3 through-hole package.

BUT11A Applications

  • Used in flyback power converters.
  • Ideal for forward converter designs.
  • Suitable for low power switching supplies.
  • Applicable in high voltage switching circuits.

BUT11A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the BUT11A?

The maximum collector-emitter voltage (VCEO) is 450V, and with base-emitter shorted (VCES) it is 1000V.

What package does the BUT11A come in?

The BUT11A is available in a TO-220-3 through-hole package.

What is the operating temperature range of the BUT11A?

The maximum operating junction temperature is 150°C, and storage temperature range is -65°C to 150°C.

Is the BUT11A RoHS compliant?

The BUT11A is listed as RoHS3 compliant, but this status is unverified.

What is the maximum collector current of the BUT11A?

Maximum continuous collector current is 5A, with peak current up to 10A.

What are the switching times of the BUT11A?

Typical turn-on time is 1µs, storage time 4µs, and fall time 0.8µs.

What is the power dissipation of the BUT11A?

Maximum power dissipation is 83W at case temperature ≤25°C.

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