CPH3245-TL-E Equivalent & Substitute Parts

Part Overview

The CPH3245-TL-E is an NPN bipolar junction transistor manufactured by onsemi, rated for 50V collector-emitter breakdown voltage and 2A maximum collector current. This device is designed for surface mount applications in the 3-CPH package configuration and operates at a maximum junction temperature of 150°C with 900mW power dissipation capability.

The CPH3245-TL-E is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where the original part is no longer readily procurable from primary sources.

Substiute Parts

CPH3245-TL-E

onsemiIn Stock: 15663CPH3245-TL-E Datasheet

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CPH3216-TL-E

onsemiIn Stock: 4658CPH3216-TL-E Datasheet

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NSS60201LT1G

onsemiIn Stock: 18256NSS60201LT1G Datasheet

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2SD1484KT146R

Rohm SemiconductorIn Stock: 2617542SD1484KT146R Datasheet

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FMMT619TA

Diodes IncorporatedIn Stock: 155175FMMT619TA Datasheet

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FMMTL619TA

Diodes IncorporatedIn Stock: 68445FMMTL619TA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CPH3245-TL-E is determined by strict electrical and mechanical parameter compatibility. The following criteria establish valid substitute relationships:

Primary Substitution Criteria:

• Transistor Type: NPN (required match)
• Voltage - Collector Emitter Breakdown (Max): ≥ 50V
• Current - Collector (Ic) (Max): ≥ 2A
• Power - Max: ≥ 900mW
• DC Current Gain (hFE) (Min): ≥ 200
• Operating Temperature (Max): ≥ 150°C
• Mounting Type: Surface Mount (required match)
• RoHS Status: ROHS3 Compliant (required match)
• Moisture Sensitivity Level (MSL): 1 (required match)

Secondary Compatibility Factors:

• Frequency - Transition: ≥ 420MHz (preferred for performance equivalence)
• Package / Case: Physical compatibility with 3-CPH or equivalent surface mount packages

Substitute parts meeting all primary criteria are classified as direct electrical equivalents. Parts meeting primary criteria with reduced secondary parameters are classified as functional substitutes with application-dependent suitability.

Parameter Comparison

Engineering Selection Recommendations

Direct Electrical Equivalent:

FMMT619TA (Diodes Incorporated) is the primary direct substitute for CPH3245-TL-E. This part meets all primary substitution criteria with identical maximum collector current (2A), collector-emitter breakdown voltage (50V), and DC current gain specification (200 minimum). The part is active in production status, ROHS3 compliant, and carries MSL 1 rating. The transition frequency of 165MHz is lower than the original 420MHz specification, but power dissipation capability (625mW) remains within acceptable operational margins for most applications. Surface mount package compatibility is confirmed through SOT-23-3 designation.

Secondary Functional Substitutes:

CPH3216-TL-E (onsemi) provides functional substitution with reduced maximum collector current (1A versus 2A). This part maintains identical voltage rating, frequency response (420MHz), and power dissipation (900mW). Active production status and full compliance certifications are confirmed. Selection of this part is appropriate for applications where collector current requirements do not exceed 1A.

FMMTL619TA (Diodes Incorporated) offers functional substitution with intermediate current capability (1.25A) and reduced power dissipation (500mW). Transition frequency of 180MHz and active production status support this selection for moderate-current applications.

Limited Substitutes:

NSS60201LT1G (onsemi) and 2SD1484KT146R (Rohm Semiconductor) meet voltage and current requirements but exhibit reduced power dissipation and frequency response characteristics. NSS60201LT1G provides 2A current capability but only 460mW power dissipation and 100MHz transition frequency. 2SD1484KT146R is limited to 500mA collector current and 200mW power dissipation. These parts are suitable only for applications with significantly reduced power and frequency demands.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can CPH3216-TL-E replace CPH3245-TL-E in all applications?

A: CPH3216-TL-E is a functional substitute with one critical limitation: maximum collector current is reduced from 2A to 1A. This part is suitable only for applications where circuit design does not require collector current exceeding 1A. All other electrical parameters, including voltage rating, frequency response, and power dissipation, are equivalent or superior.

Q: What is the primary advantage of FMMT619TA as a substitute?

A: FMMT619TA is the most direct electrical equivalent, matching the 2A collector current and 50V voltage rating of the original part. This part is in active production with confirmed availability, eliminating obsolescence concerns. The transition frequency of 165MHz is lower than the original 420MHz but remains suitable for most general-purpose switching and amplification applications.

Q: Are there package compatibility issues between CPH3245-TL-E and the substitute parts?

A: The original CPH3245-TL-E uses SC-96 package designation. Most substitute parts use SOT-23-3 (TO-236-3, SC-59) package designation. While both are surface mount configurations, physical footprint differences exist. PCB layout modifications may be required. CPH3216-TL-E shares the 3-CPH supplier device package designation with the original part, offering the closest physical compatibility.

Q: Which substitute part should be selected for high-frequency applications?

A: CPH3216-TL-E maintains the 420MHz transition frequency of the original CPH3245-TL-E, making it the preferred choice for high-frequency applications. However, this part is limited to 1A collector current. For applications requiring both 2A current and high frequency response, FMMT619TA (165MHz) represents the best available compromise among active production parts.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference document are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory compliance profile of the original CPH3245-TL-E.

Q: What is the impact of reduced power dissipation in substitute parts?

A: Several substitute parts exhibit reduced maximum power dissipation compared to the original 900mW specification. NSS60201LT1G (460mW), 2SD1484KT146R (200mW), FMMTL619TA (500mW), and FMMT619TA (625mW) all have lower power ratings. Selection of these parts requires circuit analysis to confirm that actual power dissipation in the application does not exceed the substitute part's maximum rating. Thermal management and heat sinking requirements may differ.

Q: Can 2SD1484KT146R be used as a general replacement?

A: 2SD1484KT146R is not recommended as a general replacement due to significant current and power limitations. Maximum collector current is 500mA (versus 2A) and maximum power dissipation is 200mW (versus 900mW). This part is suitable only for low-current, low-power applications and should be selected only after confirming that circuit requirements do not exceed these specifications.