CPH3115-TL-E Equivalent & Substitute Parts

Part Overview

The CPH3115-TL-E is a Surface Mount PNP Bipolar Junction Transistor manufactured by onsemi, rated for 30V collector-emitter breakdown voltage and 1.5A maximum collector current. This device is classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing design support and production continuity. The part is housed in a 3-CPH package (SC-96) and is ROHS3 compliant with unlimited moisture sensitivity rating.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector Current (Max)	1.5	A
Collector-Emitter Breakdown Voltage (Max)	30	V
Power Dissipation (Max)	900	mW
Transition Frequency	450	MHz
DC Current Gain (hFE Min)	200	@ 100mA, 2V
Operating Temperature (Max)	150	°C
Mounting Type	Surface Mount	—
Package	SC-96 (3-CPH)	—

Substitute Part Grouping Explanation

Substitution of the CPH3115-TL-E is determined by the following critical parameters: transistor type (PNP), maximum collector current rating, maximum collector-emitter breakdown voltage, power dissipation capability, and transition frequency. A substitute part must maintain electrical compatibility within the application's design envelope.

Substitute parts are grouped into three categories:

Manufacturer Recommended Substitute: CPH3116-TL-E represents the primary alternative from onsemi, offering higher voltage rating (50V) and active product status, though with reduced maximum collector current (1A).

Parametric Equivalents: CPH3115-TL-H shares identical electrical specifications with the main part, differing only in packaging format (Cut Tape versus Cut Tape & Digi-Reel).

Similar Alternatives: CPH3144-TL-E, 2SA1036KT146Q, 2SA1036KT146R, 2SB1695KT146, and 2STR2230 provide functional alternatives with variations in current rating, voltage rating, frequency response, or power dissipation that may accommodate specific application requirements.

Parameter Comparison

Part Number	Manufacturer	Ic (Max)	Vce Breakdown (Max)	Power (Max)	Frequency	hFE (Min)	Package	Status
CPH3115-TL-E	onsemi	1.5 A	30 V	900 mW	450 MHz	200 @ 100mA, 2V	SC-96 (3-CPH)	Obsolete
CPH3116-TL-E	onsemi	1 A	50 V	900 mW	420 MHz	200 @ 100mA, 2V	TO-236-3, SC-59, SOT-23-3	Active
CPH3115-TL-H	onsemi	1.5 A	30 V	900 mW	450 MHz	200 @ 100mA, 2V	SC-96 (3-CPH)	Obsolete
CPH3144-TL-E	onsemi	2 A	30 V	900 mW	440 MHz	200 @ 100mA, 2V	SC-96 (3-CPH)	Active
2SA1036KT146Q	Rohm Semiconductor	500 mA	32 V	200 mW	200 MHz	120 @ 100mA, 3V	TO-236-3, SC-59, SOT-23-3	Active
2SA1036KT146R	Rohm Semiconductor	500 mA	32 V	200 mW	200 MHz	120 @ 100mA, 3V	TO-236-3, SC-59, SOT-23-3	Active
2SB1695KT146	Rohm Semiconductor	1.5 A	30 V	200 mW	280 MHz	270 @ 100mA, 2V	TO-236-3, SC-59, SOT-23-3	Active
2STR2230	STMicroelectronics	1.5 A	30 V	500 mW	100 MHz	170 @ 500mA, 2V	TO-236-3, SC-59, SOT-23-3	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): CPH3115-TL-H is the parametric equivalent, maintaining all electrical characteristics of the CPH3115-TL-E. Both parts are obsolete; however, CPH3115-TL-H offers higher inventory availability (15,420 units versus 2,450 units).

For Active Product Status with Voltage Margin: CPH3116-TL-E is the manufacturer-recommended substitute from onsemi with active product status. This part provides 50V collector-emitter breakdown voltage (versus 30V), offering enhanced voltage margin. The maximum collector current is reduced to 1A, requiring verification that application current demands do not exceed this limit.

For Higher Current Capability: CPH3144-TL-E is an active onsemi product rated for 2A maximum collector current at 30V breakdown voltage, suitable for applications requiring current capacity exceeding 1.5A. This part maintains the same package format (SC-96) and power dissipation rating (900 mW).

For Lower Power Applications: 2SB1695KT146 (Rohm Semiconductor) provides 1.5A at 30V with active product status. This part features reduced power dissipation (200 mW) and higher DC current gain (270 minimum), suitable for low-power switching applications. Package format differs (SOT-23-3 versus SC-96).

For Reduced Current Applications: 2SA1036KT146Q and 2SA1036KT146R (Rohm Semiconductor) are active alternatives rated for 500 mA at 32V. These parts are suitable only for applications with collector current requirements below 500 mA and offer the highest inventory availability (60,300 and 140,745 units respectively).

For General-Purpose Replacement: 2STR2230 (STMicroelectronics) is an active product matching the 1.5A and 30V ratings with extended operating temperature range (−65°C to 150°C). Reduced transition frequency (100 MHz) and power dissipation (500 mW) may limit suitability for high-frequency applications.

All substitute parts are ROHS3 compliant with unlimited moisture sensitivity rating, matching the compliance profile of the original part.

Frequently Asked Questions (FAQ)

Q: Can CPH3116-TL-E be used as a direct replacement for CPH3115-TL-E?

A: CPH3116-TL-E is electrically compatible for applications where collector current does not exceed 1A. The higher voltage rating (50V versus 30V) provides additional design margin. Verification of application current requirements is necessary before substitution.

Q: What is the difference between CPH3115-TL-E and CPH3115-TL-H?

A: Both parts are parametrically identical with 1.5A collector current, 30V breakdown voltage, and 450 MHz transition frequency. The difference is packaging format: CPH3115-TL-E is supplied in Cut Tape & Digi-Reel format, while CPH3115-TL-H is Cut Tape only. CPH3115-TL-H has higher inventory availability.

Q: Why is CPH3144-TL-E listed as a similar alternative rather than a direct substitute?

A: CPH3144-TL-E has a higher maximum collector current rating (2A versus 1.5A), making it suitable for applications requiring greater current capacity. It is not a direct substitute for designs specifically rated for 1.5A maximum, as it represents a different performance tier.

Q: Can 2SA1036KT146Q or 2SA1036KT146R replace CPH3115-TL-E?

A: These Rohm Semiconductor parts are suitable only for applications with collector current requirements of 500 mA or less. The reduced current rating, power dissipation (200 mW), and transition frequency (200 MHz) limit their use to lower-power applications. Package format also differs (SOT-23-3 versus SC-96).

Q: What are the package compatibility considerations?

A: CPH3115-TL-E uses SC-96 (3-CPH) package. CPH3116-TL-E, 2SA1036KT146Q, 2SA1036KT146R, 2SB1695KT146, and 2STR2230 use SOT-23-3 (TO-236-3, SC-59) packages. PCB layout modifications are required for package format changes. CPH3144-TL-E maintains SC-96 package compatibility.

Q: Which substitute offers the best inventory availability?

A: 2SA1036KT146R has the highest inventory (140,745 units), followed by 2SA1036KT146Q (60,300 units) and CPH3144-TL-E (35,300 units). These parts are suitable only if electrical specifications align with application requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the compliance profile of CPH3115-TL-E.

Q: What is the primary consideration when selecting a substitute?

A: The primary consideration is maximum collector current rating relative to application requirements. Secondary considerations include voltage rating margin, power dissipation capability, transition frequency, and package format compatibility with existing PCB designs.

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