TIP32BTU Equivalent & Substitute Parts

Part Overview

The TIP32BTU is a PNP bipolar junction transistor manufactured by onsemi, rated for 80 V collector-emitter breakdown voltage and 3 A maximum collector current in a TO-220-3 through-hole package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. Active alternatives and functionally compatible devices are available from onsemi and other manufacturers to support applications requiring PNP transistor functionality within specified electrical and thermal parameters.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	80	V
Current - Collector (Ic) (Max)	3	A
Power - Max	2	W
Frequency - Transition	3	MHz
Vce Saturation (Max) @ Ib, Ic	1.2V @ 375mA, 3A	V
DC Current Gain (hFE) (Min) @ Ic, Vce	10 @ 3A, 4V	—
Operating Temperature (Max)	150	°C
Package / Case	TO-220-3	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution of the TIP32BTU is determined by strict equivalence and compatibility across the following critical parameters: transistor type (PNP), collector-emitter breakdown voltage rating, maximum collector current, power dissipation capability, transition frequency, saturation voltage characteristics, DC current gain, operating temperature range, and package configuration (TO-220-3 through-hole).

Substitute parts are grouped into two categories:

Direct Equivalents: Parts maintaining identical or superior electrical specifications across all critical parameters, enabling direct replacement without circuit modification.

Functional Alternatives: Parts with modified specifications in one or more parameters (voltage rating, current rating, power dissipation, or frequency response) that remain suitable for applications where the TIP32BTU specifications exceed actual circuit requirements.

The following key parameters determine substitution validity:

Collector-emitter breakdown voltage ≥ 80 V
Maximum collector current ≥ 3 A
Maximum power dissipation ≥ 2 W
Transition frequency ≥ 3 MHz
TO-220-3 package configuration
PNP transistor type

Parameter Comparison

Parameter	TIP32BTU	TIP32BG	BD242BG	D45VH10G	TIP32G	TIP32C
Manufacturer	onsemi	onsemi	onsemi	onsemi	onsemi	STMicroelectronics
Product Status	Obsolete	Active	Last Time Buy	Active	Active	Active
Transistor Type	PNP	PNP	PNP	PNP	PNP	PNP
Voltage - Collector Emitter Breakdown (Max)	80 V	80 V	80 V	80 V	40 V	100 V
Current - Collector (Ic) (Max)	3 A	3 A	3 A	15 A	3 A	3 A
Power - Max	2 W	2 W	40 W	83 W	2 W	2 W
Frequency - Transition	3 MHz	3 MHz	3 MHz	50 MHz	3 MHz	—
Vce Saturation (Max) @ Ib, Ic	1.2V @ 375mA, 3A	1.2V @ 375mA, 3A	1.2V @ 600mA, 3A	1V @ 800mA, 8A	1.2V @ 375mA, 3A	1.2V @ 375mA, 3A
DC Current Gain (hFE) (Min) @ Ic, Vce	10 @ 3A, 4V	10 @ 3A, 4V	25 @ 1A, 4V	20 @ 4A, 1V	10 @ 3A, 4V	10 @ 3A, 4V
Operating Temperature (Max)	150°C	150°C	150°C	150°C	150°C	150°C
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

TIP32BG (onsemi): Direct equivalent substitute. Maintains identical electrical specifications across voltage rating (80 V), collector current (3 A), power dissipation (2 W), transition frequency (3 MHz), and saturation voltage characteristics. Product status is active with ROHS3 compliance. Operating temperature range extends to −65°C, providing broader thermal coverage than the TIP32BTU. Recommended as primary replacement for obsolete TIP32BTU applications.

TIP32C (STMicroelectronics): Functionally compatible substitute with elevated voltage rating (100 V). Maintains 3 A collector current, 2 W power dissipation, and equivalent saturation voltage. Suitable for applications where supply voltage does not exceed 80 V. Product status is active with ROHS3 compliance. Transition frequency specification is not provided. Recommended where higher voltage margin is acceptable.

BD242BG (onsemi): Functionally compatible substitute with enhanced power dissipation (40 W) and elevated DC current gain (25 @ 1A, 4V). Maintains 80 V voltage rating and 3 A collector current. Product status is last time buy, indicating limited availability. Suitable for applications requiring higher power handling. ROHS3 compliant.

TIP32G (onsemi): Functionally compatible substitute with reduced voltage rating (40 V). Maintains 3 A collector current, 2 W power dissipation, and equivalent saturation voltage. Suitable only for applications where maximum supply voltage does not exceed 40 V. Product status is active with ROHS3 compliance. Not recommended for circuits requiring 80 V rating.

D45VH10G (onsemi): Functionally compatible substitute with enhanced current rating (15 A), power dissipation (83 W), and transition frequency (50 MHz). Maintains 80 V voltage rating. Suitable for high-current applications exceeding 3 A requirements. Product status is active with ROHS3 compliance. Represents performance upgrade path for applications requiring increased current capacity.

Frequently Asked Questions (FAQ)

Q: Can TIP32BG directly replace TIP32BTU without circuit modification?

A: Yes. TIP32BG maintains identical electrical specifications across all critical parameters: 80 V collector-emitter breakdown voltage, 3 A maximum collector current, 2 W power dissipation, 3 MHz transition frequency, and TO-220-3 package configuration. The device is pin-compatible and functionally equivalent.

Q: What is the primary difference between TIP32BTU and TIP32BG?

A: TIP32BTU is classified as obsolete, while TIP32BG is active production. TIP32BG provides extended operating temperature range (−65°C to 150°C versus 150°C maximum for TIP32BTU) and ROHS3 compliance certification. Electrical performance is identical.

Q: Can TIP32G substitute for TIP32BTU in all applications?

A: No. TIP32G has a reduced collector-emitter breakdown voltage rating of 40 V compared to 80 V for TIP32BTU. Substitution is valid only for circuits where the maximum supply voltage does not exceed 40 V. Use in higher-voltage circuits will result in device failure.

Q: Is BD242BG suitable as a direct replacement?

A: BD242BG is functionally compatible but not a direct equivalent. While it maintains the 80 V voltage rating and 3 A collector current, it provides significantly higher power dissipation (40 W versus 2 W) and elevated DC current gain. The device is suitable for applications requiring enhanced thermal performance. Product status is last time buy, indicating limited future availability.

Q: What advantage does D45VH10G offer over TIP32BTU?

A: D45VH10G provides enhanced performance specifications: 15 A maximum collector current (versus 3 A), 83 W power dissipation (versus 2 W), and 50 MHz transition frequency (versus 3 MHz). The 80 V voltage rating is maintained. This device is suitable for high-current applications and represents a performance upgrade path. Standard TIP32BTU specifications are fully supported.

Q: Are all substitute parts available in TO-220-3 package?

A: Yes. All substitute parts listed are configured in TO-220-3 through-hole package, ensuring mechanical and thermal interface compatibility with TIP32BTU PCB layouts and heat sink mounting arrangements.

Q: Does TIP32C from STMicroelectronics provide any advantage over onsemi alternatives?

A: TIP32C provides elevated collector-emitter breakdown voltage (100 V versus 80 V), offering increased voltage margin for circuit protection. Electrical performance at rated conditions is equivalent. Product status is active with ROHS3 compliance. Transition frequency specification is not provided. Selection depends on voltage margin requirements and supplier availability.

Q: What is the significance of product status classifications?

A: Active status indicates ongoing production and long-term availability. Last time buy indicates limited production with defined end-of-life date. Obsolete status indicates production has ceased. For new designs and long-term production requirements, active-status devices (TIP32BG, TIP32G, D45VH10G, TIP32C) are recommended over last-time-buy alternatives (BD242BG).

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts except TIP32BTU carry ROHS3 compliance certification. TIP32BTU compliance status is not specified. For applications requiring ROHS3 compliance, TIP32BG, BD242BG, D45VH10G, TIP32G, and TIP32C are all suitable.

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