TIP32-BP PNP Bipolar Transistor Equivalent & Substitute Parts

Part Overview

The TIP32-BP is a PNP bipolar junction transistor manufactured by Micro Commercial Co, rated for 40 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 TIP32-BP serves in applications requiring moderate power dissipation (2 W maximum) and switching frequencies up to 3 MHz, typical of audio amplifiers, power switching circuits, and complementary driver stages.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	3	A
Voltage - Collector Emitter Breakdown (Max)	40	V
Vce Saturation (Max) @ Ib, Ic	1.2 V @ 375 mA, 3 A	—
Current - Collector Cutoff (Max)	300	µA
DC Current Gain (hFE) Min @ Ic, Vce	10 @ 3 A, 4 V	—
Power - Max	2	W
Frequency - Transition	3	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the TIP32-BP are classified into two categories based on electrical parameter compatibility:

Direct Manufacturer Substitute (TIP32C-BP): This part maintains identical electrical performance in all critical parameters except voltage rating. The TIP32C-BP is rated for 100 V collector-emitter breakdown voltage compared to the TIP32-BP's 40 V rating. All other specifications—collector current (3 A), saturation voltage (1.2 V @ 375 mA, 3 A), DC current gain (10 @ 3 A, 4 V), power dissipation (2 W), transition frequency (3 MHz), and operating temperature (150°C)—are identical. The TIP32C-BP is manufactured by the same supplier (Micro Commercial Co) and is currently in active production status. This substitute is suitable for applications where the higher voltage rating provides additional design margin or where the original part is unavailable.

Parametric Equivalent (TIP32G): This part is manufactured by onsemi and provides electrical equivalence across all critical parameters. The TIP32G matches the TIP32-BP in collector current (3 A), voltage rating (40 V), saturation voltage (1.2 V @ 375 mA, 3 A), DC current gain (10 @ 3 A, 4 V), power dissipation (2 W), and transition frequency (3 MHz). The TIP32G is currently in active production status. The primary difference is the extended operating temperature range (-65°C to 150°C versus 150°C maximum for the TIP32-BP) and the supplier device package designation (TO-220 versus TO-220AB). Both parts use the TO-220-3 case outline and are suitable for direct substitution in through-hole applications.

Substitution eligibility is determined by the following key parameters: PNP transistor type, 3 A collector current rating, saturation voltage specification, DC current gain, power rating, transition frequency, TO-220-3 package, through-hole mounting, and compliance certifications (ROHS3, REACH Unaffected).

Parameter Comparison

Parameter	TIP32-BP (Main)	TIP32C-BP (Direct Substitute)	TIP32G (Parametric Equivalent)
Manufacturer	Micro Commercial Co	Micro Commercial Co	onsemi
Product Status	Obsolete	Active	Active
Transistor Type	PNP	PNP	PNP
Current - Collector (Ic) Max	3 A	3 A	3 A
Voltage - Collector Emitter Breakdown (Max)	40 V	100 V	40 V
Vce Saturation (Max) @ Ib, Ic	1.2 V @ 375 mA, 3 A	1.2 V @ 375 mA, 3 A	1.2 V @ 375 mA, 3 A
Current - Collector Cutoff (Max)	300 µA	300 µA	300 µA
DC Current Gain (hFE) Min @ Ic, Vce	10 @ 3 A, 4 V	10 @ 3 A, 4 V	10 @ 3 A, 4 V
Power - Max	2 W	2 W	2 W
Frequency - Transition	3 MHz	3 MHz	3 MHz
Operating Temperature (TJ)	150°C	150°C	-65°C to 150°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3	TO-220-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For Direct Replacement (Same Voltage Rating): The TIP32G manufactured by onsemi is the primary parametric equivalent for the obsolete TIP32-BP. Both devices share identical electrical specifications at the 40 V voltage rating and are currently in active production. The TIP32G offers the additional advantage of an extended operating temperature range (-65°C to 150°C), providing enhanced performance in temperature-sensitive applications. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with current manufacturing standards.

For Higher Voltage Margin Applications: The TIP32C-BP from Micro Commercial Co provides a direct manufacturer substitute with a 100 V voltage rating while maintaining all other electrical parameters identical to the TIP32-BP. This higher voltage rating is suitable for applications requiring additional design margin or where supply voltage transients may exceed 40 V. The TIP32C-BP is currently in active production status and maintains the same compliance certifications.

Compliance and Certification Basis: All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The MSL rating of 1 (Unlimited) for the TIP32-BP and TIP32C-BP, combined with the not applicable MSL for the TIP32G, indicates no moisture sensitivity constraints for storage and handling in standard industrial environments.

Frequently Asked Questions (FAQ)

Q: Can the TIP32C-BP be used as a direct replacement for the TIP32-BP in all applications?

A: The TIP32C-BP is electrically compatible with the TIP32-BP for all applications designed for 40 V operation. The higher 100 V voltage rating of the TIP32C-BP does not degrade performance in 40 V circuits. However, applications with specific voltage-dependent characteristics should be verified against the actual circuit design requirements.

Q: What is the primary difference between the TIP32G and TIP32-BP?

A: The TIP32G and TIP32-BP are parametrically equivalent across all critical electrical specifications. The TIP32G is manufactured by onsemi (versus Micro Commercial Co for the TIP32-BP) and offers an extended operating temperature range of -65°C to 150°C compared to the TIP32-BP's 150°C maximum. Both use the TO-220-3 package for through-hole mounting.

Q: Are the TO-220AB and TO-220 package designations interchangeable?

A: Both designations refer to the TO-220-3 case outline used for through-hole mounting. The TO-220AB and TO-220 supplier device package designations indicate minor variations in lead forming or tape-and-reel specifications but are mechanically and electrically compatible for PCB assembly.

Q: Which substitute part should be selected for new designs?

A: For new designs, the TIP32G is recommended as the primary choice due to its active production status, extended operating temperature range, and parametric equivalence to the TIP32-BP. The TIP32C-BP is suitable when higher voltage rating is required or when Micro Commercial Co sourcing is preferred.

Q: Do all substitute parts meet the same compliance standards as the TIP32-BP?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the TIP32-BP. This ensures compatibility with current manufacturing and environmental regulations.

Q: What is the significance of the DC Current Gain (hFE) specification of 10 @ 3 A, 4 V?

A: The DC current gain specification indicates the minimum amplification factor at maximum collector current (3 A) and a specified collector-emitter voltage (4 V). This parameter is identical across all three parts, ensuring consistent switching and amplification characteristics in circuit applications.

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