BDW94A-S Equivalent & Substitute Parts Reference

Part Overview

The BDW94A-S is a bipolar PNP Darlington transistor in the TO-220 package, specified for 60 V collector-emitter breakdown voltage and 12 A collector current, with minimum DC current gain of 750 at 5 A, 3 V. The part is obsolete, making alternative model selection critical for continued support and replacement in legacy designs. This reference lists equivalent and substitute transistors strictly according to the specified key electrical and mechanical parameters for the "Transistors, Bipolar (BJT)" category.

Key Parameters

Manufacturer Part Number	Transistor Type	Voltage - Collector Emitter Breakdown (Max)	Current - Collector (Ic) (Max)	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Moisture Sensitivity Level (MSL)	Product Status
BDW94A-S	PNP - Darlington	60 V	12 A	3V @ 100mA, 10A	1mA	750 @ 5A, 3V	2 W	-65°C ~ 150°C (TJ)	Through Hole	TO-220-3	TO-220	ROHS3 Compliant	1 (Unlimited)	Obsolete

Substitute Part Grouping Explanation

Substitute selection is made by matching critical electrical and mechanical ratings: transistor type (PNP - Darlington), maximum collector-emitter voltage, maximum collector current, minimum DC current gain, collector cutoff current, saturation voltage at specific currents, mounting type (Through Hole), package/case (TO-220-3), and regulatory compliance (RoHS3, MSL). Substitutes must have ratings equal to or exceeding the BDW94A-S parameter set.

Parameter Comparison

Manufacturer Part Number	Transistor Type	Voltage - Collector Emitter Breakdown (Max)	Current - Collector (Ic) (Max)	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Moisture Sensitivity Level (MSL)	Product Status
BDW94A-S	PNP - Darlington	60 V	12 A	3V @ 100mA, 10A	1mA	750 @ 5A, 3V	2 W	-65°C ~ 150°C (TJ)	Through Hole	TO-220-3	TO-220	ROHS3 Compliant	1 (Unlimited)	Obsolete
BDW94C	PNP - Darlington	100 V	12 A	3V @ 100mA, 10A	1mA	750 @ 5A, 3V	80 W	150°C (TJ)	Through Hole	TO-220-3	TO-220	ROHS3 Compliant	1 (Unlimited)	Active

Engineering Selection Recommendations

The BDW94A-S is listed as obsolete. Substitute selection prioritizes models that are active and compliant with RoHS3, while maintaining identical or superior electrical and mechanical specifications. The substitute BDW94C is active, has equivalent or higher ratings in all specified parameters, and confirms RoHS3 compliance and unlimited moisture sensitivity (MSL 1).

Frequently Asked Questions (FAQ)

Q: What parameters must match for substituting bipolar (BJT) transistors like BDW94A-S?
A: Substitute parts must match transistor type (PNP - Darlington), collector-emitter voltage, collector current, DC current gain, saturation voltage, collector cutoff current, mounting type (Through Hole), package (TO-220-3), supplier device package, and compliance (RoHS, MSL).

Q: Can BDW94C directly replace BDW94A-S in existing circuits?
A: BDW94C matches or exceeds all provided electrical and mechanical parameters of BDW94A-S, including package and mounting type.

Q: Are there differences in package type or mounting requirements between BDW94A-S and BDW94C?
A: Both devices use the TO-220-3 case and are specified for through hole mounting.

Q: What product status should be considered when selecting a substitute?
A: Substitute selection should prioritize active status to ensure ongoing availability; BDW94C is active, while BDW94A-S is obsolete.

Q: Does the substitute meet regulatory requirements?
A: BDW94C is RoHS3 compliant and has a moisture sensitivity level of 1 (unlimited), matching the regulatory profile of BDW94A-S.

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