TIP115 PNP Darlington Transistor Equivalent & Substitute Parts

Part Overview

The TIP115 is a PNP Darlington bipolar junction transistor manufactured by onsemi, rated for 60 V collector-emitter breakdown voltage and 2 A maximum collector current in a Through Hole TO-220-3 package. This component is classified as obsolete in its original onsemi configuration, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP - Darlington	—
Current - Collector (Ic) Maximum	2	A
Voltage - Collector Emitter Breakdown (Max)	60	V
Vce Saturation (Max)	2.5	V @ 8mA, 2A
Current - Collector Cutoff (Max)	2	mA
DC Current Gain (hFE) Minimum	1000	@ 1A, 4V
Power - Maximum	2	W
Operating Temperature (TJ)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—

Substitute Part Grouping Explanation

Substitution of the TIP115 is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor Type: PNP - Darlington configuration
Current - Collector (Ic) Maximum: 2 A
Voltage - Collector Emitter Breakdown: 60 V
Vce Saturation: 2.5 V @ 8mA, 2A
Current - Collector Cutoff: 2 mA
DC Current Gain (hFE): 1000 minimum @ 1A, 4V
Mounting Type: Through Hole
Package / Case: TO-220-3

Identified Substitutes:

The TIP115G (onsemi) qualifies as a direct substitute, maintaining identical electrical specifications while offering active product status and RoHS3 compliance.

The TIP115 (Solid State Inc.) qualifies as a functional substitute with identical electrical specifications and active product status. This part exhibits higher maximum power rating (50 W versus 2 W) and RoHS3 compliance, providing enhanced thermal performance within the same electrical envelope.

Parameter Comparison

Parameter	TIP115 (onsemi)	TIP115G (onsemi)	TIP115 (Solid State Inc.)
Manufacturer	onsemi	onsemi	Solid State Inc.
Product Status	Obsolete	Active	Active
Transistor Type	PNP - Darlington	PNP - Darlington	PNP - Darlington
Current - Collector (Ic) Max	2 A	2 A	2 A
Voltage - Collector Emitter Breakdown (Max)	60 V	60 V	60 V
Vce Saturation (Max)	2.5 V @ 8mA, 2A	2.5 V @ 8mA, 2A	2.5 V @ 8mA, 2A
Current - Collector Cutoff (Max)	2 mA	2 mA	2 mA
DC Current Gain (hFE) Min	1000 @ 1A, 4V	1000 @ 1A, 4V	1000 @ 1A, 4V
Power - Maximum	2 W	2 W	50 W
Operating Temperature (TJ)	150 °C	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3	TO-220-3
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	Vendor Undefined

Engineering Selection Recommendations

TIP115G (onsemi) is the primary substitute for obsolete TIP115 applications. This part maintains complete electrical and thermal equivalence while offering active product status and ROHS3 compliance. The extended operating temperature range (-65°C to 150°C) provides broader environmental coverage compared to the original part specification.

TIP115 (Solid State Inc.) serves as an alternative substitute with identical electrical specifications and active availability. The significantly higher maximum power rating (50 W) accommodates applications requiring enhanced thermal dissipation capability within the same TO-220-3 package footprint. ROHS3 compliance is confirmed; however, REACH status is vendor-undefined and requires verification for regulated market applications.

Both substitutes maintain mechanical compatibility with existing TO-220-3 through-hole mounting designs and preserve all critical electrical parameters necessary for direct circuit substitution.

Frequently Asked Questions (FAQ)

Q: Can TIP115G directly replace the obsolete TIP115 (onsemi) in existing designs?

A: Yes. The TIP115G maintains identical electrical specifications, including collector current (2 A), collector-emitter breakdown voltage (60 V), saturation voltage (2.5 V), and DC current gain (1000 minimum). Both components use the TO-220-3 package for through-hole mounting. The TIP115G offers active product status and extended operating temperature range.

Q: What is the difference between TIP115G and TIP115 (Solid State Inc.)?

A: Both parts meet the electrical requirements of the original TIP115. The primary difference is maximum power rating: TIP115G is rated 2 W, while the Solid State Inc. version is rated 50 W. The higher power rating of the Solid State Inc. part provides enhanced thermal performance in the same package. Both are ROHS3 compliant and actively manufactured.

Q: Are there packaging differences between these substitutes?

A: All three parts use the TO-220-3 through-hole package. The TIP115G is supplied in Tube packaging, while the original TIP115 (onsemi) and Solid State Inc. TIP115 do not specify packaging format. This distinction affects procurement and handling but does not impact electrical or mechanical compatibility.

Q: Which substitute should be selected for new designs?

A: Selection depends on thermal requirements. For applications matching the original 2 W specification, TIP115G (onsemi) is recommended due to active status and confirmed ROHS3 compliance. For applications requiring higher power dissipation, TIP115 (Solid State Inc.) provides 50 W capability. Both maintain full electrical equivalence.

Q: Are these parts suitable for high-temperature applications?

A: The TIP115G and Solid State Inc. TIP115 both support operating temperatures from -65°C to 150°C, providing broader environmental coverage than the original part. Applications operating at the maximum junction temperature (150°C) are supported by all three parts.

Q: What compliance certifications apply to these substitutes?

A: TIP115G is ROHS3 compliant and REACH unaffected. TIP115 (Solid State Inc.) is ROHS3 compliant; REACH status is vendor-undefined and requires confirmation for regulated markets. Both parts carry EAR99 ECCN classification.

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