BDW93C Equivalent & Substitute Parts

Part Overview

The BDW93C is an NPN Darlington bipolar junction transistor manufactured by STMicroelectronics, designed for high-current switching and amplification applications. This device operates at 100 V collector-emitter breakdown voltage with a maximum collector current of 12 A and 80 W power dissipation capability. The component is housed in a TO-220-3 through-hole package and maintains active product status with full RoHS3 compliance. Substitute parts become necessary when the primary manufacturer part experiences supply constraints, inventory depletion, or when alternative sourcing from qualified manufacturers is required for procurement flexibility and supply chain resilience.

Substiute Parts

BDW93C

STMicroelectronicsIn Stock: 21675BDW93C Datasheet

Current PartRFQ

BDW93CTU

onsemiIn Stock: 16313BDW93CTU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BDW93C is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part BDW93CTU qualifies as a direct equivalent based on the following criteria:

Electrical Parameter Equivalence:

• Identical maximum collector current (12 A)
• Identical collector-emitter breakdown voltage (100 V)
• Identical saturation voltage characteristics (3V @ 100mA, 10A)
• Identical collector cutoff current (1 mA)
• Identical DC current gain specification (750 @ 5A, 3V)
• Identical maximum power dissipation (80 W)
• Identical maximum operating junction temperature (150°C)

Mechanical Parameter Equivalence:

• Identical package designation (TO-220-3)
• Identical mounting type (Through Hole)
• Identical transistor topology (NPN - Darlington)

Compliance Equivalence:

• Both parts maintain RoHS3 compliance
• Both parts carry REACH Unaffected status
• Both parts share identical ECCN and HTSUS classifications

The BDW93CTU, manufactured by onsemi, maintains full functional and physical interchangeability with the BDW93C across all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: BDW93C (STMicroelectronics)

The BDW93C is the recommended primary choice for new designs and procurement. This part maintains active product status, ensuring long-term availability and manufacturer support. Full RoHS3 compliance and REACH Unaffected designation confirm regulatory alignment for current and future applications. With 21,570 units in current inventory, supply continuity is established.

Substitute Selection: BDW93CTU (onsemi)

The BDW93CTU serves as a qualified substitute when BDW93C availability is constrained. This part demonstrates complete electrical and mechanical equivalence across all specified parameters. However, the obsolete product status indicates limited future availability and potential supply discontinuation. The BDW93CTU is suitable for replacement applications and legacy system maintenance where existing designs require component substitution. Current inventory of 16,300 units supports near-term procurement requirements.

Compliance Considerations

Both parts satisfy RoHS3 and REACH regulatory requirements, enabling use in regulated markets and applications with environmental compliance mandates. ECCN and HTSUS classifications are identical, supporting consistent export and import documentation.

Frequently Asked Questions (FAQ)

Q: Can BDW93CTU be used as a direct replacement for BDW93C in existing designs?

A: Yes. The BDW93CTU provides complete functional and physical interchangeability. All electrical parameters, including collector current, breakdown voltage, saturation characteristics, and current gain, are identical. The TO-220-3 package and through-hole mounting are unchanged, requiring no PCB layout modifications.

Q: What is the significance of the product status difference between these parts?

A: The BDW93C maintains active status, indicating ongoing manufacturer support and long-term availability. The BDW93CTU is classified as obsolete, meaning onsemi has discontinued active production and support. For new designs, the BDW93C is preferred. The BDW93CTU is suitable for replacement and maintenance applications where existing inventory exists.

Q: Are there thermal management differences between these parts?

A: No. Both parts specify identical maximum junction temperature (150°C) and maximum power dissipation (80 W). Thermal design considerations and heat sink requirements remain unchanged between the two parts.

Q: Do these parts require different PCB footprints?

A: No. Both parts use the TO-220-3 package with identical through-hole mounting configuration. PCB footprints, lead spacing, and mounting hole patterns are identical. No design modifications are necessary for substitution.

Q: Are there any moisture sensitivity or handling differences?

A: The BDW93C specifies Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture-related handling restrictions. The BDW93CTU lists MSL as Not Applicable. Both parts can be stored and handled under standard industrial conditions without special moisture control measures.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by equivalence in maximum collector current (12 A), collector-emitter breakdown voltage (100 V), saturation voltage (3V @ 100mA, 10A), collector cutoff current (1 mA), DC current gain (750 @ 5A, 3V), and maximum power dissipation (80 W). All these parameters must match exactly for direct substitution.

Q: Can these parts be used interchangeably in high-frequency switching applications?

A: The transition frequency parameter is not specified for either part in the provided data. Substitution decisions based on frequency response characteristics cannot be made without this information. Consult detailed datasheets for frequency-dependent applications.