Equivalent & Substitute Parts for 50A02SS-TL-E

Part Overview

The 50A02SS-TL-E is a PNP bipolar junction transistor manufactured by onsemi, rated for 50 V collector-emitter breakdown voltage and 400 mA maximum collector current. This device is packaged in a 3-SSFP surface mount configuration and is classified as obsolete. Due to its obsolete status, equivalent substitute parts with active product status are available to maintain design continuity and ensure long-term supply chain reliability.

Substiute Parts

50A02SS-TL-E

onsemiIn Stock: 1676050A02SS-TL-E Datasheet

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50A02CH-TL-E

onsemiIn Stock: 452050A02CH-TL-E Datasheet

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50A02MH-TL-E

onsemiIn Stock: 1826950A02MH-TL-E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 50A02SS-TL-E are qualified based on the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Transistor type: PNP
• Voltage - Collector Emitter Breakdown (Max): 50 V (minimum requirement)
• DC Current Gain (hFE) (Min) @ Ic, Vce: 200 @ 10mA, 2V (minimum requirement)
• Vce Saturation (Max) @ Ib, Ic: 120mV @ 10mA, 100mA (maximum requirement)
• Current - Collector Cutoff (Max): 100nA (ICBO)
• Frequency - Transition: 690 MHz (minimum requirement)
• Operating Temperature (TJ): 150°C (minimum requirement)

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Base Product Number: 50A02 (same family)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitution Logic: The 50A02SS-TL-E can be substituted with parts that maintain or exceed the electrical specifications while sharing the same base product number and compliance certifications. Substitute parts may have higher maximum collector current (Ic) and power dissipation ratings, which provide design margin without compromising circuit functionality. Package variations are acceptable provided the mounting type remains surface mount and pin configuration is compatible with the application.

Parameter Comparison

Engineering Selection Recommendations

50A02MH-TL-E: This substitute part is recommended for applications requiring the 50A02SS-TL-E. The 50A02MH-TL-E maintains all critical electrical specifications while offering active product status, ensuring continued availability and manufacturing support. The increased maximum collector current (500 mA) and power dissipation (600 mW) provide additional design margin. The 3-MCPH package (3-SMD, Flat Lead) is compatible with standard surface mount assembly processes. ROHS3 compliance and MSL 1 rating match the original part.

50A02CH-TL-E: This substitute part is also qualified for replacement of the 50A02SS-TL-E. The 50A02CH-TL-E provides active product status with identical electrical performance and higher power dissipation capability (700 mW). The 3-CPH package offers multiple case options (TO-236-3, SC-59, SOT-23-3), providing flexibility for different PCB layouts. ROHS3 compliance and MSL 1 rating are maintained.

Both substitute parts share the same base product number (50A02), ensuring functional equivalence within the onsemi 50A02 transistor family. Selection between 50A02MH-TL-E and 50A02CH-TL-E depends on specific package requirements and PCB design constraints.

Frequently Asked Questions (FAQ)

Q: Can the 50A02SS-TL-E be directly replaced with the 50A02MH-TL-E or 50A02CH-TL-E?

A: Yes. Both substitute parts meet or exceed all electrical specifications of the 50A02SS-TL-E. The higher collector current and power ratings do not degrade circuit performance. Verification of package footprint compatibility with the PCB design is required.

Q: What is the primary reason for substitution?

A: The 50A02SS-TL-E is classified as obsolete. The 50A02MH-TL-E and 50A02CH-TL-E are active products with ongoing manufacturing support and supply availability.

Q: Are there differences in electrical performance between the three parts?

A: All three parts share identical DC current gain, saturation voltage, transition frequency, and operating temperature specifications. The substitute parts offer higher maximum collector current (500 mA vs. 400 mA) and power dissipation (600–700 mW vs. 200 mW), providing additional design margin.

Q: What are the package differences?

A: The 50A02SS-TL-E uses a 3-SSFP package (SC-81). The 50A02MH-TL-E uses a 3-MCPH package (3-SMD, Flat Lead). The 50A02CH-TL-E uses a 3-CPH package (TO-236-3, SC-59, SOT-23-3). PCB footprint verification is necessary before substitution.

Q: Do all parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant, have MSL 1 (Unlimited) moisture sensitivity rating, and are REACH unaffected. Compliance certifications are identical.

Q: Which substitute part should be selected?

A: Selection depends on PCB layout and package compatibility. The 50A02MH-TL-E is suitable for designs using 3-SMD flat lead packages. The 50A02CH-TL-E is suitable for designs using standard SOT-23-3 or SC-59 packages. Consult PCB design specifications and assembly capabilities to determine the appropriate substitute.

Q: Are there any thermal considerations when substituting?

A: Both substitute parts maintain the same maximum operating temperature (150°C TJ) as the original part. The higher power dissipation ratings of the substitutes do not increase thermal requirements for equivalent circuit operation.