BUL310 NPN high voltage fast-switching power transistor by STMicroelectronics. Rated for 500V collector-emitter voltage and 5A continuous collector current, in a TO-220 through-hole package.
Mfr Part #:

BUL310

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
NPN high voltage fast-switching power transistor by STMicroelectronics. Rated for 500V collector-emitter voltage and 5A continuous collector current, in a TO-220 through-hole package.
Total Stock: 2,013 pcs
$ Price Range: $1.06

BUL310 Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
2,000 pcs
2000 pcs On Request 1 On Request On Request 946 On Request On Request
Non-Authorised Inventory information
13 pcs
13 pcs On Request 1 On Request On Request On Request On Request On Request

BUL310 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Base Current
Base Peak Current
Collector Cut-off Current (ICEO)
Collector Cut-off Current (ICES) (Maximum @ VCE=1000 V, Tj=125 °C)
Collector Cut-off Current (ICES) (Maximum @ VCE=1000 V, Tj=25 °C)
Collector Peak Current
Collector-Emitter Sustaining Voltage
Collector-Emitter Voltage (VCES)
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
DC Current Gain (hFE) (Minimum @ IC=10 mA, VCE=5 V)
Emitter-Base Voltage (VEBO)
Fall Time
Junction Temperature
Mounting Type
Operating Temperature
Package Type
Power
Storage Temperature
Storage Time
Supplier Device Package
Tape & Reel
Termination Style
Thermal Resistance (Junction-Ambient)
Thermal Resistance Junction-Case
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

BUL310 Description

Short technical summary and product information.

The BUL310 is a high voltage fast-switching NPN power transistor manufactured by STMicroelectronics using Multi Epitaxial Planar technology. It is designed for applications such as electronic ballasts for fluorescent lighting and low cost switch-mode power supplies.

 

Key electrical specifications include a collector-emitter voltage (VCEO) of 500V and a collector-emitter sustaining voltage of 500V minimum. The continuous collector current is rated at 5A, with a peak current capability of 10A. The DC current gain (hFE) is a minimum of 6 at 3A collector current and 2.5V VCE, and a minimum of 10 at 10mA and 5V VCE. The collector-emitter saturation voltage is typically 0.7V at 3A and 600mA base current, with a maximum of 1.1V.

 

Switching characteristics include a typical storage time of 1.2µs and a typical fall time of 80ns, making the device suitable for high-frequency operation. The maximum power dissipation is 75W at a case temperature of 25°C. The junction-to-case thermal resistance is 1.65°C/W, and the junction-to-ambient thermal resistance is 62.5°C/W. The device is housed in a TO-220 through-hole package with three leads.

 

This product is marked as obsolete by the manufacturer. It is RoHS3 compliant (unverified) and has an MSL of 1 (unlimited floor life). The BUL310 is suitable for use in lighting ballasts and single-transistor converters where high voltage and fast switching are required.

BUL310 Quick Information

Product Type: Bipolar Junction Transistor (BJT) - Single
Series: BUL
Canonical Name: BUL310 - High Voltage Fast-Switching NPN Power Transistor
Subcategory: NPN Power Transistor

BUL310 Compliance

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

BUL310 Estimated Pricing

Qty Low High
1,000+ $1.06 $1.06

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

BUL310 Features

  • NPN high voltage fast-switching transistor.
  • Rated for 500V collector-emitter voltage.
  • 5A continuous collector current capacity.
  • TO-220 through-hole package.
  • Very high switching speed.

BUL310 Applications

  • Electronic ballasts for fluorescent lighting.
  • Flyback and forward single transistor converters.
  • Low cost switch-mode power supplies.

BUL310 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the BUL310?

The collector-emitter voltage (VCEO) is 500V, and the collector-emitter voltage with base open (VCES) is 1000V.

What is the package type for the BUL310?

The BUL310 is available in a TO-220-3 through-hole package.

What is the maximum operating junction temperature?

The maximum operating junction temperature is 150°C.

Is the BUL310 RoHS compliant?

The device is listed as RoHS3 Compliant, but this status is unverified.

What is the typical storage time of the BUL310?

The typical storage time is 1.2 µs, with a maximum of 1.9 µs, tested at Ic=2A, Ib1=0.4A, VBE(off)=-5V, VCL=250V, L=200µH, Tj=25°C.

What is the minimum DC current gain at 3A?

The minimum DC current gain (hFE) is 6 at Ic=3A and Vce=2.5V.

What is the collector-emitter saturation voltage at 3A?

The collector-emitter saturation voltage is a maximum of 1.1V at Ib=600mA and Ic=3A.

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