CPH3105-TL-E Equivalent & Substitute Parts

Part Overview

The CPH3105-TL-E is a Surface Mount PNP Bipolar Junction Transistor manufactured by onsemi, rated for 50V collector-emitter breakdown voltage and 3A maximum collector current. This device is classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The CPH3105-TL-E operates at a maximum junction temperature of 150°C with 900mW power dissipation capability and features a transition frequency of 380MHz.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	3	A
Vce Saturation (Max) @ Ib, Ic	500mV @ 100mA, 2A	—
Power - Max	900	mW
Frequency - Transition	380	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	ROHS3 Compliant	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the CPH3105-TL-E is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: PNP configuration required
Voltage - Collector Emitter Breakdown (Max): Must equal or exceed 50V
Current - Collector (Ic) (Max): Must equal or exceed 3A
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3 compatible footprints

Secondary Compatibility Parameters:

Vce Saturation characteristics
DC Current Gain (hFE) minimum specifications
Power dissipation capability
Transition frequency performance
Operating temperature range

Substitute parts are grouped into three categories based on current rating alignment:

Category 1 - Full Current Rating Match (3A): Parts rated for 3A maximum collector current with 50V or higher breakdown voltage.

Category 2 - Reduced Current Rating (1A to 2A): Parts rated below 3A maximum collector current, suitable only for applications with reduced current requirements.

Category 3 - Significantly Reduced Current Rating (<1A): Parts rated for 150mA or less, applicable only to low-current signal switching applications.

Parameter Comparison

Part Number	Manufacturer	Ic (Max)	Vce Breakdown (Max)	Power (Max)	Frequency (Transition)	Vce Sat @ Ib, Ic	Product Status	Package
CPH3105-TL-E	onsemi	3 A	50 V	900 mW	380 MHz	500mV @ 100mA, 2A	Obsolete	TO-236-3, SC-59, SOT-23-3
CPH3116-TL-E	onsemi	1 A	50 V	900 mW	420 MHz	430mV @ 10mA, 500mA	Active	TO-236-3, SC-59, SOT-23-3
NSS60200LT1G	onsemi	2 A	60 V	460 mW	100 MHz	220mV @ 200mA, 2A	Active	TO-236-3, SC-59, SOT-23-3
2SA1037AKT146Q	Rohm Semiconductor	150 mA	50 V	200 mW	140 MHz	500mV @ 5mA, 50mA	Active	TO-236-3, SC-59, SOT-23-3
2SA1037AKT146R	Rohm Semiconductor	150 mA	50 V	200 mW	140 MHz	500mV @ 5mA, 50mA	Active	TO-236-3, SC-59, SOT-23-3
2SAR543RTL	Rohm Semiconductor	3 A	50 V	1 W	300 MHz	400mV @ 100mA, 2A	Active	SC-96

Engineering Selection Recommendations

For Direct Replacement (Full Electrical Equivalence):

The 2SAR543RTL manufactured by Rohm Semiconductor provides the closest electrical match to the CPH3105-TL-E, with identical 3A maximum collector current and 50V breakdown voltage ratings. Both devices operate at 150°C maximum junction temperature and feature comparable saturation voltage characteristics. The 2SAR543RTL is classified as Active product status, ensuring ongoing availability and supply chain continuity. However, the 2SAR543RTL utilizes SC-96 package format, which differs from the CPH3105-TL-E TO-236-3/SOT-23-3 footprint. PCB layout modification is required for this substitution.

For Same-Package Substitution (TO-236-3/SOT-23-3 Footprint):

The CPH3116-TL-E from onsemi maintains identical package compatibility and 50V voltage rating with the CPH3105-TL-E. This device is Active status and ROHS3 compliant. The CPH3116-TL-E is rated for 1A maximum collector current, limiting its application to circuits requiring 1A or less. The NSS60200LT1G from onsemi provides 2A maximum collector current with 60V breakdown voltage in the same TO-236-3/SOT-23-3 package, offering improved voltage margin. Both CPH3116-TL-E and NSS60200LT1G are suitable for applications where current requirements do not exceed their respective ratings.

For Low-Current Signal Applications:

The 2SA1037AKT146R and 2SA1037AKT146Q from Rohm Semiconductor are rated for 150mA maximum collector current with 50V breakdown voltage. These devices are Active status and maintain TO-236-3/SOT-23-3 package compatibility. These parts are applicable only to signal-level switching circuits and cannot support the 3A current capability of the CPH3105-TL-E.

Compliance and Certification:

All substitute parts listed are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. All devices feature Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the CPH3116-TL-E directly replace the CPH3105-TL-E in all applications?

A: The CPH3116-TL-E provides direct package and voltage compatibility but is rated for 1A maximum collector current versus the CPH3105-TL-E 3A rating. Substitution is valid only for applications where the actual collector current does not exceed 1A. Circuit analysis must confirm current requirements before substitution.

Q: What is the primary difference between the 2SAR543RTL and CPH3105-TL-E?

A: Both devices provide identical 3A collector current and 50V breakdown voltage ratings. The 2SAR543RTL differs in package format (SC-96 versus TO-236-3/SOT-23-3) and power dissipation (1W versus 900mW). PCB layout redesign is required for package conversion.

Q: Is the NSS60200LT1G suitable for applications requiring 3A collector current?

A: No. The NSS60200LT1G is rated for 2A maximum collector current. Applications requiring sustained 3A operation must use either the CPH3105-TL-E, 2SAR543RTL, or equivalent 3A-rated devices.

Q: Do all substitute parts maintain the same thermal characteristics?

A: All listed substitute parts operate at 150°C maximum junction temperature, matching the CPH3105-TL-E. However, power dissipation ratings vary. The 2SAR543RTL provides 1W dissipation versus 900mW for the CPH3105-TL-E, affecting thermal management in high-power applications.

Q: Are the 2SA1037AKT146R and 2SA1037AKT146Q interchangeable?

A: Both devices share identical electrical specifications and package format. The primary difference is DC Current Gain (hFE) minimum specification: 2SA1037AKT146R specifies 180 @ 1mA, 6V while 2SA1037AKT146Q specifies 120 @ 1mA, 6V. Selection depends on circuit gain requirements.

Q: What packaging format considerations apply to substitution?

A: The CPH3105-TL-E, CPH3116-TL-E, NSS60200LT1G, 2SA1037AKT146R, and 2SA1037AKT146Q all utilize TO-236-3/SC-59/SOT-23-3 compatible packages, enabling direct PCB footprint compatibility. The 2SAR543RTL uses SC-96 package, requiring PCB layout modification.

Q: Are all substitute parts available in equivalent packaging options (Tape & Reel, Cut Tape)?

A: Packaging availability varies by part number and supplier. The CPH3116-TL-E is available in Tape & Reel format. The 2SA1037AKT146R, 2SA1037AKT146Q, and NSS60200LT1G are available in Cut Tape and Digi-Reel formats. Verify packaging availability with component suppliers for production requirements.

Q: What is the transition frequency impact when substituting with NSS60200LT1G?

A: The NSS60200LT1G operates at 100MHz transition frequency versus 380MHz for the CPH3105-TL-E. This represents a significant reduction in high-frequency performance. Substitution is valid only for applications operating below 100MHz switching frequencies.

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