TIP102TSTU Equivalent & Substitute Parts

Part Overview

The TIP102TSTU is an NPN Darlington bipolar junction transistor manufactured by onsemi, rated for 100 V collector-emitter breakdown voltage and 8 A maximum collector current in a TO-220-3 through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The TIP102TSTU serves applications requiring medium-power NPN switching and amplification with Darlington configuration for high current gain.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN - Darlington	—
Current - Collector (Ic) (Max)	8	A
Voltage - Collector Emitter Breakdown (Max)	100	V
Vce Saturation (Max) @ Ib, Ic	2.5V @ 80mA, 8A	—
Current - Collector Cutoff (Max)	50	µA
DC Current Gain (hFE) (Min) @ Ic, Vce	1000 @ 3A, 4V	—
Power - Max	2	W
Operating Temperature (TJ)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—

Substitute Part Grouping Explanation

Substitution of the TIP102TSTU is determined by the following critical parameters:

Electrical Compatibility Requirements:

Transistor Type: NPN - Darlington configuration
Maximum Collector Current (Ic): 8 A or greater
Collector-Emitter Breakdown Voltage: 100 V or greater
DC Current Gain (hFE): 1000 or greater at specified operating points
Maximum Power Dissipation: 2 W or greater

Mechanical Compatibility Requirements:

Mounting Type: Through Hole
Package / Case: TO-220-3

Substitute parts are grouped into two categories:

Direct Substitutes maintain identical electrical specifications and package configuration, enabling pin-for-pin replacement without circuit modification.

Similar Substitutes maintain core electrical parameters (voltage, current, gain) and package type but may differ in secondary characteristics such as saturation voltage, cutoff current, or maximum power rating. These parts function equivalently in the application but require verification of specific operating conditions.

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max) [A]	Vce Breakdown (Max) [V]	Vce Sat (Max) @ Ib, Ic	hFE (Min) @ Ic, Vce	Power (Max) [W]	Tj (Max) [°C]	Package
TIP102TSTU	onsemi	Obsolete	8	100	2.5V @ 80mA, 8A	1000 @ 3A, 4V	2	150	TO-220-3
TIP102G	onsemi	Active	8	100	2.5V @ 80mA, 8A	1000 @ 3A, 4V	2	150	TO-220-3
TIP102	STMicroelectronics	Active	8	100	2.5V @ 80mA, 8A	1000 @ 3A, 4V	2	150	TO-220-3
2N6045G	onsemi	Active	8	100	2V @ 12mA, 3A	1000 @ 3A, 4V	75	150	TO-220-3
BDX53CG	onsemi	Active	8	100	2V @ 12mA, 3A	750 @ 3A, 3V	65	150	TO-220-3
BDX53C	onsemi	Obsolete	8	100	2V @ 12mA, 3A	750 @ 3A, 3V	60	150	TO-220-3
TIP122G	onsemi	Active	5	100	4V @ 20mA, 5A	1000 @ 3A, 3V	2	150	TO-220-3
TIP132	STMicroelectronics	Active	8	100	4V @ 30mA, 6A	1000 @ 4A, 4V	2	150	TO-220-3

Engineering Selection Recommendations

Direct Substitutes (Pin-for-Pin Replacement):

TIP102G (onsemi) and TIP102 (STMicroelectronics) are direct electrical and mechanical equivalents to TIP102TSTU. Both parts are active products with identical maximum ratings, saturation characteristics, and current gain specifications. TIP102G maintains onsemi manufacturer continuity, while TIP102 from STMicroelectronics provides an alternative source. Both support extended operating temperature range (−65°C to 150°C) compared to the original part specification.

Similar Substitutes (Functional Equivalents):

2N6045G (onsemi) and BDX53CG (onsemi) maintain the 8 A collector current and 100 V breakdown voltage required for TIP102TSTU applications. These parts feature higher maximum power dissipation (75 W and 65 W respectively) and extended temperature range, making them suitable for applications with thermal margin requirements. Saturation voltage and cutoff current differ from the original specification; circuit performance in saturation-mode switching applications requires evaluation.

BDX53C (onsemi, obsolete) provides equivalent electrical performance to BDX53CG but carries obsolete product status, limiting procurement viability.

TIP122G (onsemi) operates at reduced maximum collector current (5 A versus 8 A) and exhibits higher saturation voltage (4 V at 5 A). This part is suitable only for applications where 5 A current capacity is sufficient.

TIP132 (STMicroelectronics) maintains 8 A collector current and 100 V breakdown voltage with active product status. Saturation voltage specification differs (4 V at 6 A versus 2.5 V at 8 A), requiring circuit-level evaluation for switching applications.

Compliance and Availability:

Active products (TIP102G, TIP102, 2N6045G, BDX53CG, TIP122G, TIP132) carry RoHS3 compliance certification. All parts maintain REACH unaffected status and EAR99 export classification. Inventory availability is highest for TIP122G (35,100 units) and TIP102 (23,053 units).

Frequently Asked Questions (FAQ)

Q: Can TIP102G directly replace TIP102TSTU without circuit modification?

A: Yes. TIP102G is a direct electrical and mechanical equivalent with identical maximum ratings, saturation characteristics, and current gain specifications. Pin configuration and package type (TO-220-3) are identical, enabling direct substitution.

Q: What is the difference between TIP102G and TIP102 from STMicroelectronics?

A: Both parts are electrically identical with matching maximum ratings and performance characteristics. The primary difference is manufacturer source. TIP102G is manufactured by onsemi, while TIP102 is manufactured by STMicroelectronics. Both are active products with extended operating temperature range.

Q: Can TIP122G replace TIP102TSTU in all applications?

A: No. TIP122G is rated for maximum 5 A collector current, compared to 8 A for TIP102TSTU. This part is suitable only for applications where the required collector current does not exceed 5 A. Additionally, saturation voltage is higher (4 V at 5 A), which may affect switching performance.

Q: What are the advantages of 2N6045G and BDX53CG over direct substitutes?

A: 2N6045G and BDX53CG provide higher maximum power dissipation (75 W and 65 W respectively) compared to 2 W for TIP102TSTU. These parts are suitable for applications requiring thermal margin or continuous high-current operation. Both maintain 8 A collector current and 100 V breakdown voltage. Extended operating temperature range (−65°C to 150°C) provides additional environmental flexibility.

Q: Are there differences in saturation voltage between substitute parts?

A: Yes. TIP102TSTU and TIP102G specify 2.5 V saturation voltage at 80 mA base current and 8 A collector current. 2N6045G and BDX53CG specify 2 V saturation voltage at lower base current (12 mA) and reduced collector current (3 A). TIP122G and TIP132 specify higher saturation voltages (4 V). For saturation-mode switching applications, these differences affect power dissipation and switching speed.

Q: What is the operating temperature range for substitute parts?

A: TIP102TSTU specifies maximum junction temperature of 150°C. TIP102G, 2N6045G, BDX53CG, TIP122G, and TIP132 support extended operating temperature range from −65°C to 150°C, providing improved low-temperature performance. BDX53C (obsolete) specifies 150°C maximum, matching the original part.

Q: Are all substitute parts RoHS compliant?

A: Active substitute parts (TIP102G, TIP102, 2N6045G, BDX53CG, TIP122G, TIP132) carry RoHS3 compliance certification. Obsolete parts (TIP102TSTU, BDX53C) do not carry RoHS certification. For applications requiring RoHS compliance, active products must be selected.

Q: What is the package configuration for all substitute parts?

A: All substitute parts use TO-220-3 through-hole package configuration, maintaining mechanical compatibility with TIP102TSTU. Pin assignment and lead spacing are identical across all listed parts.

Q: Which substitute part has the highest inventory availability?

A: TIP122G has the highest inventory availability at 35,100 units. However, this part is rated for 5 A maximum collector current and is not suitable for applications requiring 8 A operation. For 8 A applications, TIP102 (STMicroelectronics) has 23,053 units available.

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