2SC5231A-9-TL-E Equivalent & Substitute Parts

Part Overview

The 2SC5231A-9-TL-E is an RF transistor NPN manufactured by onsemi, designed for RF applications requiring 10V collector-emitter breakdown voltage and operation at 7GHz transition frequency. This component is classified as obsolete, necessitating identification of active substitute parts for new designs and ongoing production requirements. The part delivers 100mW maximum power dissipation with 70mA maximum collector current in a surface mount SMCP package configuration.

Substiute Parts

2SC5231A-9-TL-E

onsemiIn Stock: 41462SC5231A-9-TL-E Datasheet

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2SC5488A-TL-H

onsemiIn Stock: 116162SC5488A-TL-H Datasheet

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BFR93AWH6327XTSA1

Infineon TechnologiesIn Stock: 35409BFR93AWH6327XTSA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SC5231A-9-TL-E is determined by alignment of the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor type: NPN configuration
• Voltage rating: Collector-emitter breakdown voltage ≥ 10V
• Frequency capability: Transition frequency ≥ 7GHz
• Power dissipation: Maximum power ≥ 100mW
• Current handling: Maximum collector current ≥ 70mA
• Operating temperature: Maximum junction temperature ≥ 150°C
• Mounting: Surface mount technology
• Moisture sensitivity: MSL 1 (Unlimited)

The identified substitute parts meet these criteria while accommodating variations in package configuration and product status. The 2SC5488A-TL-H maintains identical electrical specifications within the onsemi product family. The BFR93AWH6327XTSA1 from Infineon Technologies exceeds the primary specifications, offering higher voltage rating, power dissipation, and collector current capacity.

Parameter Comparison

Engineering Selection Recommendations

2SC5488A-TL-H (onsemi): This part is the primary substitute for the 2SC5231A-9-TL-E. Both components share identical electrical specifications including 10V breakdown voltage, 7GHz transition frequency, 100mW power rating, and 70mA maximum collector current. The 2SC5488A-TL-H is currently active in production status, ensuring long-term availability. The primary difference is package configuration: the 2SC5488A-TL-H uses SC-81 (3-SSFP) packaging versus the SMCP package of the original part. Both maintain MSL 1 moisture sensitivity rating and REACH compliance. The 2SC5488A-TL-H exhibits lower DC current gain (90 vs. 135 @ 20mA, 5V), which may require circuit design verification for gain-dependent applications.

BFR93AWH6327XTSA1 (Infineon Technologies): This part provides enhanced electrical performance relative to the 2SC5231A-9-TL-E. The BFR93AWH6327XTSA1 offers 12V collector-emitter breakdown voltage (versus 10V), 300mW power dissipation (versus 100mW), and 90mA maximum collector current (versus 70mA). The transition frequency is 6GHz, which is lower than the 7GHz specification of the original part. This substitute is suitable for applications where higher voltage and power margins are beneficial and where 6GHz frequency capability is sufficient. The BFR93AWH6327XTSA1 uses SC-70/SOT-323 packaging and is ROHS3 compliant. The DC current gain is 70 @ 30mA, 8V, representing lower gain than the original specification.

Both substitute parts maintain surface mount technology, 150°C maximum junction temperature, MSL 1 rating, and REACH compliance. Package footprint differences require PCB layout modification. Selection between substitutes depends on frequency requirements, power dissipation needs, and available board space for the respective package geometries.

Frequently Asked Questions (FAQ)

Q: Can the 2SC5488A-TL-H directly replace the 2SC5231A-9-TL-E without circuit modification?

A: The 2SC5488A-TL-H provides electrical equivalence in voltage, frequency, power, and current specifications. However, the package change from SMCP to SC-81 (3-SSFP) requires PCB footprint modification. Additionally, the lower DC current gain (90 vs. 135 @ 20mA, 5V) may necessitate bias network adjustment in gain-dependent circuits.

Q: What is the primary difference between the two onsemi substitutes and the Infineon option?

A: The 2SC5488A-TL-H maintains electrical parity with the original 2SC5231A-9-TL-E across all primary specifications. The BFR93AWH6327XTSA1 provides higher voltage (12V vs. 10V), higher power dissipation (300mW vs. 100mW), and higher collector current (90mA vs. 70mA), but operates at 6GHz transition frequency rather than 7GHz. The BFR93AWH6327XTSA1 is appropriate for applications where the lower frequency is acceptable and enhanced power handling is advantageous.

Q: Are there compliance or availability concerns with these substitutes?

A: Both substitute parts are active in production status with REACH compliance and MSL 1 moisture sensitivity rating. The 2SC5488A-TL-H and BFR93AWH6327XTSA1 are both ROHS3 compliant. The original 2SC5231A-9-TL-E is obsolete, making substitution necessary for new production. Inventory availability for both substitutes is confirmed at 11,541 pcs (2SC5488A-TL-H) and 35,300 pcs (BFR93AWH6327XTSA1).

Q: How do package differences affect circuit implementation?

A: The 2SC5231A-9-TL-E uses SMCP (3-SMD, Gull Wing) packaging. The 2SC5488A-TL-H uses SC-81 (3-SSFP) packaging, and the BFR93AWH6327XTSA1 uses SC-70/SOT-323 packaging. Each package has distinct footprint dimensions and pin configurations. PCB layout must be modified to accommodate the selected substitute package. Pin assignment verification is required prior to assembly.

Q: What are the noise figure implications of substitution?

A: The 2SC5231A-9-TL-E specifies 1dB noise figure @ 1GHz. The 2SC5488A-TL-H maintains this specification at 1dB @ 1GHz. The BFR93AWH6327XTSA1 specifies 1.5dB ~ 2.6dB @ 900MHz ~ 1.8GHz, representing higher noise figure across the measured frequency range. For noise-sensitive applications, the 2SC5488A-TL-H is the preferred substitute.

Q: Can the BFR93AWH6327XTSA1 be used in applications requiring 7GHz operation?

A: The BFR93AWH6327XTSA1 has a transition frequency of 6GHz, which is below the 7GHz requirement of the original 2SC5231A-9-TL-E. This substitute is not suitable for applications requiring 7GHz operation. The 2SC5488A-TL-H maintains the 7GHz transition frequency specification and is the appropriate choice for such applications.