BU406 The BU406 is a silicon NPN switching transistor in a TO-220-3 package, designed for horizontal deflection output stages. It features 200V collector-emitter voltage, 7A continuous collector current, and 60W power dissipation.
Mfr Part #:

BU406

Available from 3 distributors
Mfr Name: On Semiconductor
On Semiconductor
The BU406 is a silicon NPN switching transistor in a TO-220-3 package, designed for horizontal deflection output stages. It features 200V collector-emitter voltage, 7A continuous collector current, and 60W power dissipation.
Total Stock: 4,309 pcs
$ Price Range: $14.53 - $21.60

BU406 Available from 3 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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3,196 pcs
3196 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
1,100 pcs
1100 pcs On Request 1 On Request On Request On Request On Request On Request
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13 pcs
13 pcs On Request 1 On Request On Request On Request On Request On Request

BU406 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Base Current
Collector Peak Current (Maximum @ repetitive)
Collector Peak Current (Maximum @ tp < 10 ms)
Collector-Base Voltage (VCBO)
Collector-Emitter Voltage (VCEO)
Current
Emitter-Base Voltage (VEBO)
Frequency
Mounting Type
Operating Temperature
Power
Second Breakdown Collector Current
Storage Temperature Range
Supplier Device Package
Thermal Resistance (Junction-Ambient)
Thermal Resistance Junction-Case
Transistor Type
Transition Frequency
Turn Off Time
Vbe Saturation (Max)
Vce Saturation (Max) @ Ib, Ic
Voltage

BU406 Description

Short technical summary and product information.

The BU406 is an NPN epitaxial planar silicon switching transistor housed in a JEDEC TO-220 plastic package. It is designed for use in horizontal deflection output stages of large screen monochrome and color television receivers with 110° CRTs.

 

Key electrical characteristics include a maximum collector-emitter voltage (VCEO) of 200V, collector-base voltage (VCBO) of 400V, and continuous collector current of 7A (peak 10A repetitive, 15A non-repetitive). It offers a transition frequency of 10 MHz at IC=0.5A, VCE=10V, and a fast turn-off time of 0.75 µs.

 

The device is rated for junction temperature up to 150°C and has a thermal resistance junction-to-case of 2.08 °C/W. The TO-220-3 package supports through-hole mounting and provides effective thermal management.

BU406 Quick Information

Product Type: Bipolar Transistor (BJT)
Canonical Name: BU406 NPN Silicon Switching Transistor
Subcategory: Single Bipolar Junction Transistor

BU406 Compliance

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

BU406 Estimated Pricing

Qty Low High
1+ $21.60 $21.60
10+ $18.36 $18.36
25+ $17.21 $17.21
50+ $16.39 $16.39
100+ $15.84 $15.84
250+ $14.96 $14.96
500+ $14.53 $14.53

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

BU406 Features

  • NPN silicon epitaxial planar transistor.
  • 200V collector-emitter voltage rating.
  • 7A continuous collector current capability.
  • 60W power dissipation at 25°C case temperature.
  • Fast switching with 0.75 µs turn-off time.

BU406 Applications

  • Horizontal deflection output for CRT televisions.
  • High-voltage switching circuits up to 200V.
  • Industrial power switching applications.

BU406 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the BU406?

200V (VCEO, IB=0).

What is the maximum collector current rating?

7A continuous, 10A repetitive peak, and 15A non-repetitive peak (tp<10ms).

What is the power dissipation rating?

60W at case temperature ≤25°C.

What package is the BU406 available in?

TO-220-3 through-hole package.

What is the transition frequency?

10 MHz minimum at IC=0.5A, VCE=10V.

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