BDW46G Equivalent & Substitute Parts

Part Overview

The BDW46G is a PNP Darlington bipolar junction transistor manufactured by onsemi, housed in a TO-220-3 package for through-hole mounting. This device is rated for 80 V collector-emitter breakdown voltage and 15 A maximum collector current, with a maximum power dissipation of 85 W. The BDW46G is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility within the specified electrical and mechanical parameters while offering active product status and continued availability.

Substiute Parts

BDW46G

onsemiIn Stock: 963BDW46G Datasheet

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TIP107G

onsemiIn Stock: 9148TIP107G Datasheet

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TIP147T

STMicroelectronicsIn Stock: 21436TIP147T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BDW46G is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Transistor topology: PNP - Darlington configuration
• Voltage rating: Collector-emitter breakdown voltage must equal or exceed 80 V
• Current capacity: Collector current rating must equal or exceed 15 A
• Power dissipation: Maximum power rating must equal or exceed 85 W
• DC current gain: Minimum hFE of 1000 at specified operating points
• Saturation characteristics: Vce saturation performance at rated current levels

Mechanical Compatibility Criteria:

• Package type: TO-220-3 through-hole configuration
• Mounting interface: Through-hole lead compatibility
• Thermal management: Identical package footprint for heat sink mounting

Regulatory & Compliance Criteria:

• RoHS3 compliance status
• REACH compliance status
• Product status: Active or obsolete classification

The substitute parts listed below satisfy the electrical requirements within the allowed parameter ranges while maintaining mechanical and thermal compatibility with the BDW46G footprint.

Parameter Comparison

Engineering Selection Recommendations

TIP147T (STMicroelectronics)

The TIP147T is the primary substitute for the BDW46G. This device exceeds the electrical specifications of the BDW46G across all critical parameters: 100 V breakdown voltage (versus 80 V), 10 A collector current (versus 15 A), and 90 W power dissipation (versus 85 W). The TIP147T maintains identical DC current gain characteristics (1000 @ 5A, 4V) and comparable saturation voltage performance. The device is classified as active with full RoHS3 and REACH compliance. The TO-220-3 package provides direct mechanical compatibility. The TIP147T is suitable for applications where the BDW46G current requirement does not exceed 10 A.

TIP107G (onsemi)

The TIP107G is an alternative substitute manufactured by onsemi, offering 100 V breakdown voltage and 8 A collector current. This device is classified as active with full RoHS3 compliance. The TIP107G exhibits superior cutoff current characteristics (50 µA versus 2 mA) and lower saturation voltage (2.5 V @ 80mA, 8A). However, the maximum power dissipation is limited to 2 W, significantly below the BDW46G specification of 85 W. The TIP107G is suitable only for applications where collector current does not exceed 8 A and power dissipation remains below 2 W.

Selection Criteria:

• For applications requiring 10 to 15 A collector current and 85 W power dissipation: TIP147T
• For applications requiring 8 A or less collector current with minimal power dissipation: TIP107G
• Both substitutes maintain TO-220-3 through-hole compatibility and regulatory compliance

Frequently Asked Questions (FAQ)

Q: Can the TIP147T directly replace the BDW46G in all applications?

A: The TIP147T is mechanically and electrically compatible with the BDW46G for applications where collector current does not exceed 10 A. The TIP147T exceeds the BDW46G voltage and power ratings. Applications requiring the full 15 A collector current capability of the BDW46G require alternative solutions.

Q: What is the primary limitation of the TIP107G as a substitute?

A: The TIP107G maximum power dissipation is 2 W, compared to 85 W for the BDW46G. This device is suitable only for low-power applications. The collector current is also limited to 8 A maximum.

Q: Are the substitute parts compatible with the BDW46G PCB footprint?

A: Yes. Both TIP147T and TIP107G use the TO-220-3 package with identical through-hole lead configuration and spacing. Direct PCB footprint compatibility is maintained.

Q: What is the operating temperature range for each substitute?

A: The TIP147T operates from -55 to 150 °C, matching the BDW46G range. The TIP107G operates from -65 to 150 °C, providing an extended lower temperature limit.

Q: Are both substitute parts RoHS3 and REACH compliant?

A: Yes. Both TIP147T and TIP107G are RoHS3 compliant and REACH unaffected, matching the compliance status of the BDW46G.

Q: What is the DC current gain specification for the substitute parts?

A: Both TIP147T and TIP107G maintain a minimum DC current gain (hFE) of 1000. The TIP147T is specified at 5A and 4V, identical to the BDW46G. The TIP107G is specified at 3A and 4V.

Q: Can the TIP107G handle the full 15 A current rating of the BDW46G?

A: No. The TIP107G maximum collector current is 8 A. Applications requiring 15 A operation require the TIP147T or alternative high-current devices.

Q: What is the saturation voltage difference between the BDW46G and TIP147T?

A: Both devices specify 3 V saturation voltage at their respective rated currents. The BDW46G is rated at 3V @ 50mA, 10A, while the TIP147T is rated at 3V @ 40mA, 10A, indicating comparable saturation performance.