CPH3114-TL-E Equivalent & Substitute Parts

Part Overview

The CPH3114-TL-E is a PNP bipolar junction transistor manufactured by onsemi, rated for 15V collector-emitter breakdown voltage and 1.5A maximum collector current. This device is packaged in a 3-CPH surface mount configuration and is designed for general-purpose switching and amplification applications operating up to 350MHz transition frequency.

The CPH3114-TL-E is classified as an obsolete product. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this transistor.

Substiute Parts

CPH3114-TL-E

onsemiIn Stock: 3117CPH3114-TL-E Datasheet

Current PartRFQ

NSS20200LT1G

onsemiIn Stock: 38153NSS20200LT1G Datasheet

MFR RecommendedRFQ

2SB1590KT146Q

Rohm SemiconductorIn Stock: 154512SB1590KT146Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CPH3114-TL-E is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor polarity: PNP type required
• Voltage rating: Collector-emitter breakdown voltage must equal or exceed 15V
• Current rating: Maximum collector current must equal or exceed 1.5A
• Power dissipation: Maximum power rating must equal or exceed 900mW
• Mounting: Surface mount configuration required
• Operating temperature: Maximum junction temperature must support 150°C operation
• Compliance: RoHS3 compliance and REACH unaffected status required

Identified Substitute Parts:

1. NSS20200LT1G (onsemi) — MFR Recommended: Exceeds all primary electrical parameters with 20V voltage rating, 2A current rating, and active product status. Package compatibility requires verification for 3-CPH to SOT-23-3 transition.

2. 2SB1590KT146Q (Rohm Semiconductor) — Similar Manufacturer Part: Matches voltage rating (15V) and operating temperature (150°C). Current rating of 1A is below the 1.5A requirement; power rating of 200mW is below the 900mW requirement. Suitable for reduced-current applications only.

Parameter Comparison

Engineering Selection Recommendations

NSS20200LT1G Selection: The NSS20200LT1G is the manufacturer-recommended substitute for the CPH3114-TL-E. This onsemi device maintains PNP polarity and exceeds all primary electrical specifications: 20V voltage rating (versus 15V required), 2A current rating (versus 1.5A required), and equivalent saturation voltage performance. The device holds active product status, ensuring long-term supply availability and manufacturing support. All compliance certifications match the original part: ROHS3 compliant, REACH unaffected, and MSL 1 rating. Package transition from 3-CPH to SOT-23-3 requires PCB layout modification but maintains surface mount mounting type. This substitute is suitable for direct replacement in applications where the higher voltage and current ratings do not create design conflicts.

2SB1590KT146Q Selection: The 2SB1590KT146Q from Rohm Semiconductor is classified as a similar manufacturer part. This device matches the 15V voltage rating and 150°C operating temperature of the original part. However, the 1A maximum collector current and 200mW power rating fall below the CPH3114-TL-E specifications of 1.5A and 900mW respectively. The 2SB1590KT146Q is suitable only for applications where collector current does not exceed 1A and power dissipation remains below 200mW. This device maintains active product status and full compliance certifications. Package compatibility with SOT-23-3 is equivalent to the NSS20200LT1G.

Frequently Asked Questions (FAQ)

Q: Can the NSS20200LT1G directly replace the CPH3114-TL-E without circuit modification?

A: The NSS20200LT1G provides electrical compatibility as a PNP transistor with superior voltage and current ratings. However, package transition from 3-CPH to SOT-23-3 requires PCB layout modification. Pin configuration and footprint differ between these packages. Circuit operation is compatible provided the application does not depend on the specific frequency response characteristics of the 350MHz transition frequency device.

Q: What is the primary limitation of the 2SB1590KT146Q as a substitute?

A: The 2SB1590KT146Q has a maximum collector current of 1A and maximum power dissipation of 200mW. The original CPH3114-TL-E is rated for 1.5A and 900mW. Applications requiring collector currents between 1A and 1.5A or power dissipation above 200mW cannot use this substitute without circuit redesign.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both NSS20200LT1G and 2SB1590KT146Q are ROHS3 compliant and REACH unaffected, matching the compliance status of the CPH3114-TL-E.

Q: What is the difference in transition frequency between the main part and substitutes?

A: The CPH3114-TL-E operates at 350MHz transition frequency. The NSS20200LT1G operates at 100MHz, and the 2SB1590KT146Q operates at 200MHz. Applications requiring high-frequency switching above 200MHz may experience performance degradation with either substitute.

Q: Do the substitute parts have the same moisture sensitivity level?

A: Yes. All three devices—CPH3114-TL-E, NSS20200LT1G, and 2SB1590KT146Q—are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: What package considerations apply when substituting these parts?

A: The CPH3114-TL-E uses a 3-CPH package (SC-96). Both substitutes use SOT-23-3 (TO-236-3, SC-59) packages. These are different physical packages requiring PCB footprint redesign. Pin-to-pin electrical function remains equivalent for PNP transistor operation.