TIP32B-BP Equivalent & Substitute Parts

Part Overview

The TIP32B-BP is a PNP bipolar junction transistor manufactured by Micro Commercial Co, rated for 80 V collector-emitter breakdown voltage and 3 A maximum collector current in a TO-220AB through-hole package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The TIP32B-BP serves in applications requiring medium-power PNP switching and amplification functions within the specified voltage and current ratings.

Substiute Parts

TIP32B-BP

Micro Commercial CoIn Stock: 1045TIP32B-BP Datasheet

Current PartRFQ

TIP32C-BP

Micro Commercial CoIn Stock: 4659TIP32C-BP Datasheet

DirectRFQ

BD242B

STMicroelectronicsIn Stock: 5245BD242B Datasheet

DirectRFQ

TIP32BG

onsemiIn Stock: 3750TIP32BG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP32B-BP is determined by the following critical parameters:

Mandatory Matching Criteria:

• Transistor Type: PNP
• Current - Collector (Ic) (Max): 3 A minimum
• Voltage - Collector Emitter Breakdown (Max): 80 V minimum
• Power - Max: 2 W minimum
• Mounting Type: Through Hole
• Package / Case: TO-220-3

Allowable Variation:

• Voltage - Collector Emitter Breakdown (Max) may exceed 80 V
• Frequency - Transition may vary
• DC Current Gain (hFE) may vary
• Operating Temperature range may extend beyond 150°C

Substitute parts are grouped into two categories: Direct Substitutes (identical or superior electrical specifications with active product status) and Similar Substitutes (matching core parameters with minor specification differences).

Parameter Comparison

Engineering Selection Recommendations

TIP32C-BP (Direct Substitute - Preferred)

The TIP32C-BP is the primary substitute for the obsolete TIP32B-BP. Both devices are manufactured by Micro Commercial Co and share identical mechanical and thermal specifications. The TIP32C-BP features a higher voltage rating (100 V versus 80 V), providing enhanced design margin in applications with voltage transients or supply variations. The TIP32C-BP maintains active product status with 4,568 units in stock, ensuring long-term procurement availability. Both parts are ROHS3 compliant with MSL 1 rating and identical power dissipation characteristics.

BD242B (Direct Substitute - Alternative)

The BD242B, manufactured by STMicroelectronics, provides a direct electrical substitute with matching 80 V voltage rating and 3 A current capability. This device maintains identical power dissipation and package configuration. The BD242B is actively produced with 5,137 units in stock. The primary distinction is the higher base current requirement for saturation (600 mA versus 375 mA), which may affect drive circuit design in current-limited applications. ROHS3 compliance and MSL 1 rating are maintained.

TIP32BG (Similar Substitute - Alternative)

The TIP32BG, manufactured by onsemi, matches the core electrical specifications of the TIP32B-BP with 80 V voltage rating and 3 A current capability. This device is actively produced with 3,700 units in stock. The TIP32BG exhibits lower DC current gain at 3 A operation (10 versus 25 at 1 A), requiring higher base drive current in certain circuit configurations. Extended operating temperature range (-65°C to 150°C) provides broader thermal performance. ROHS3 compliance is maintained; MSL rating is not applicable.

Frequently Asked Questions (FAQ)

Q: Can the TIP32C-BP directly replace the TIP32B-BP in existing designs?

A: Yes. The TIP32C-BP is a direct substitute with identical mechanical, thermal, and power specifications. The higher voltage rating (100 V versus 80 V) provides additional design margin without requiring circuit modifications. Both devices share the same TO-220-3 package and mounting configuration.

Q: What is the primary difference between TIP32B-BP and BD242B?

A: Both devices are rated for 80 V and 3 A operation in TO-220-3 packages. The BD242B requires higher base current for saturation (600 mA versus 375 mA). This difference affects base drive circuit design but does not prevent substitution in applications with adequate drive capability.

Q: Is the TIP32BG suitable for high-frequency applications?

A: The TIP32BG maintains a 3 MHz transition frequency, matching the TIP32B-BP specification. Both devices are suitable for applications within this frequency range. The TIP32BG's lower DC current gain at 3 A operation requires higher base drive current compared to the TIP32B-BP.

Q: Are all substitute parts RoHS compliant?

A: Yes. The TIP32C-BP, BD242B, and TIP32BG are all ROHS3 compliant. All devices meet current environmental and regulatory requirements for electronic component manufacturing.

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

A: The TIP32B-BP, TIP32C-BP, and BD242B are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. The TIP32BG has MSL not applicable, indicating no moisture sensitivity classification.

Q: Can these devices be used interchangeably in PCB designs?

A: Yes. All substitute parts use identical TO-220-3 package configuration with matching pin assignments and through-hole mounting. PCB layouts and thermal management designs require no modification for substitution.

Q: Which substitute part offers the best long-term availability?

A: The TIP32C-BP offers the highest current inventory (4,568 units) with active product status from the original manufacturer, Micro Commercial Co. The BD242B (5,137 units) and TIP32BG (3,700 units) also maintain active status with substantial stock levels.