BDW94CF Equivalent & Substitute Parts

Part Overview

The BDW94CF is a PNP Darlington bipolar junction transistor manufactured by onsemi, rated for 100 V collector-emitter breakdown voltage and 12 A maximum collector current in a TO-220-3 through-hole package. This device is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The BDW94CF serves in switching and amplification circuits requiring moderate power dissipation and high current gain characteristics typical of Darlington configurations.

Substiute Parts

BDW94CF

onsemiIn Stock: 1273BDW94CF Datasheet

Current PartRFQ

BDW94CFTU

onsemiIn Stock: 4474BDW94CFTU Datasheet

DirectRFQ

BDW94CFP

STMicroelectronicsIn Stock: 1646BDW94CFP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BDW94CF is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Transistor Type: PNP - Darlington configuration
• Maximum Collector Current: 12 A
• Collector-Emitter Breakdown Voltage: 100 V
• Vce Saturation: 3 V @ 100mA, 10A
• DC Current Gain (hFE): 750 minimum @ 5A, 3V
• Operating Temperature: 150°C (TJ)
• Mounting Type: Through Hole
• Package / Case: TO-220-3

Allowable Variation:

• Maximum Power Dissipation: Substitute parts may exceed the original 30 W rating, provided all other electrical parameters remain equivalent
• Supplier Device Package designation: May differ (TO-220F-3 vs TO-220FP) while maintaining TO-220-3 mechanical compatibility
• Product Status: Active substitutes are acceptable for obsolete originals
• Manufacturer: Cross-manufacturer substitutes are valid when all electrical and mechanical parameters align

The two substitute parts listed below meet all mandatory matching criteria and are therefore direct functional equivalents for the BDW94CF.

Parameter Comparison

Engineering Selection Recommendations

BDW94CFTU (onsemi) is the primary substitute for the obsolete BDW94CF. Both parts are manufactured by onsemi and share identical electrical specifications. The BDW94CFTU is currently in active production status with higher inventory availability (4400 pcs in stock versus 1230 pcs for the original). The BDW94CFTU features increased maximum power dissipation (80 W versus 30 W), providing enhanced thermal margin in applications approaching the original power rating. This part is RoHS3 compliant and maintains REACH unaffected status. Packaging is supplied in tube format.

BDW94CFP (STMicroelectronics) is a cross-manufacturer equivalent suitable for applications where STMicroelectronics sourcing is preferred or required. All electrical parameters match the BDW94CF exactly. The BDW94CFP offers moderate power dissipation increase (33 W versus 30 W) and is RoHS3 compliant with REACH unaffected status. This part is actively produced with 1597 pcs in stock. The supplier device package designation differs (TO-220FP versus TO-220F-3), but both maintain mechanical compatibility within the TO-220-3 footprint.

Both substitutes are suitable for direct replacement in existing designs without circuit modification, provided thermal management remains adequate for the application's power dissipation requirements.

Frequently Asked Questions (FAQ)

Q: Can the BDW94CFTU be used as a direct replacement for the BDW94CF?

A: Yes. The BDW94CFTU is a direct electrical and mechanical equivalent. All critical parameters including collector current, breakdown voltage, saturation voltage, and current gain are identical. The increased power rating (80 W versus 30 W) provides additional thermal headroom and does not affect circuit operation.

Q: What is the difference between the TO-220F-3 and TO-220FP package designations?

A: Both designations refer to variants of the TO-220-3 through-hole package. The TO-220F-3 and TO-220FP are mechanically compatible and functionally interchangeable in standard TO-220-3 footprints. The difference in supplier designation reflects manufacturing or distribution variations between onsemi and STMicroelectronics but does not affect electrical performance or PCB mounting.

Q: Is the BDW94CFP from STMicroelectronics compatible with designs originally specified for the onsemi BDW94CF?

A: Yes. The BDW94CFP meets all electrical specifications of the BDW94CF and uses the same TO-220-3 package footprint. Cross-manufacturer substitution is valid when all electrical and mechanical parameters align, as they do in this case.

Q: Why does the BDW94CFTU have a higher power rating (80 W) than the original BDW94CF (30 W)?

A: The increased power rating reflects improved thermal design or die characteristics in the newer active production version. This does not indicate a different device; all electrical parameters remain identical. The higher power rating provides additional design margin and does not require circuit changes.

Q: Are there any compliance or regulatory differences between the three parts?

A: All three parts share identical REACH status (REACH Unaffected) and ECCN classification (EAR99). The BDW94CFTU and BDW94CFP are both RoHS3 compliant. The original BDW94CF does not list RoHS status but maintains full REACH compliance. No regulatory barriers exist to substitution.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: The BDW94CF and BDW94CFP both carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The BDW94CFTU lists MSL as Not Applicable, which is consistent with through-hole components. No special moisture handling is required for any of these parts.

Q: Can I use the BDW94CFP if my design specifies onsemi parts only?

A: Substitution depends on design specifications and procurement requirements. From an electrical and mechanical standpoint, the BDW94CFP is fully equivalent. If cross-manufacturer substitution is restricted by specification, the BDW94CFTU (onsemi) is the appropriate choice.