PESD24VL1BA,115 Equivalent & Substitute Parts

Part Overview

The PESD24VL1BA,115 is a 24V Transient Voltage Suppressor (TVS) diode manufactured by Nexperia USA Inc., designed for general-purpose transient protection in surface-mount applications. This bidirectional zener diode features a 70V maximum clamping voltage and 3A peak pulse current rating in an SOD-323 package. The part is marked as "Not For New Designs," indicating end-of-life status. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply availability, and support ongoing production requirements for existing applications.

Substiute Parts

PESD24VL1BA,115

Nexperia USA Inc.In Stock: 450205PESD24VL1BA,115 Datasheet

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CDSOD323-T24C

Bourns Inc.In Stock: 62114CDSOD323-T24C Datasheet

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CDSOD323-T24C-DSL

Bourns Inc.In Stock: 36110CDSOD323-T24C-DSL Datasheet

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CDSOD323-T24LC

Bourns Inc.In Stock: 3502CDSOD323-T24LC Datasheet

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CDSOD323-T24SC

Bourns Inc.In Stock: 1714CDSOD323-T24SC Datasheet

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CPDF24V

Comchip TechnologyIn Stock: 1101CPDF24V Datasheet

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ESDLIN1524BJ

STMicroelectronicsIn Stock: 185400ESDLIN1524BJ Datasheet

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ESDLIN1524BJ-HQ

STMicroelectronicsIn Stock: 11838ESDLIN1524BJ-HQ Datasheet

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SD24C.TCT

Semtech CorporationIn Stock: 102042SD24C.TCT Datasheet

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SP4024-01FTG-C

Littelfuse Inc.In Stock: 7969SP4024-01FTG-C Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PESD24VL1BA,115 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Voltage - Reverse Standoff: 24V nominal rating
• Voltage - Breakdown (Min): 25.4V or higher
• Package / Case: SOD-323 (SC-76)
• Mounting Type: Surface Mount
• Bidirectional Channels: 1
• Type: Zener diode

Secondary Performance Criteria:

• Voltage - Clamping (Max) @ Ipp: Must not exceed 70V to maintain circuit protection margins
• Current - Peak Pulse (8/20µs): 3A minimum to handle transient events
• Power - Peak Pulse: 200W minimum dissipation capability
• Operating Temperature Range: Must support -65°C to 150°C or equivalent industrial range

Substitute parts are grouped based on adherence to these parameters. Parts with identical standoff voltage, compatible clamping characteristics, and SOD-323 packaging are considered direct substitutes. Variations in peak pulse current and power dissipation are acceptable when the substitute meets or exceeds the original specification.

Parameter Comparison

Engineering Selection Recommendations

Recommended Primary Substitutes (24V Standoff, SOD-323, Active Status):

The CDSOD323-T24C, CDSOD323-T24C-DSL, CDSOD323-T24LC, and SD24C.TCT from Bourns Inc. and Semtech Corporation are the most direct substitutes. These parts maintain the 24V reverse standoff voltage, SOD-323 package format, and active product status. The CDSOD323 series offers improved clamping performance (44V–56V) compared to the original 70V specification, providing enhanced transient protection margins. All are ROHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1).

Secondary Substitutes (24V Standoff, SOD-323, Specialized Applications):

The SP4024-01FTG-C from Littelfuse Inc. is an automotive-grade TVS diode (AEC-Q101 qualified) with 24V standoff voltage and 50V clamping. This part is suitable for applications requiring automotive qualification and higher peak pulse current (7A).

The ESDLIN1524BJ from STMicroelectronics is a dual-voltage part offering both 15V and 24V configurations in a single package. The 24V channel matches the original specification with 50V clamping and 3A peak pulse current. This part carries automotive qualification (AEC-Q101) and is suitable for multi-voltage protection schemes.

Not Recommended:

The CPDF24V from Comchip Technology uses a 1005/SOD-323F package variant and delivers only 1A peak pulse current and 47W power dissipation, falling below the original 3A and 200W specifications. This part is suitable only for low-current applications.

The ESDLIN1524BJ-HQ from STMicroelectronics features a 50V reverse standoff voltage, which exceeds the 24V requirement and is not suitable as a direct substitute.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a lower clamping voltage than the original PESD24VL1BA,115?

A: Yes. The original part specifies 70V maximum clamping. Substitute parts with lower clamping voltages (44V–56V) provide tighter transient suppression and are compatible with the circuit protection scheme. Lower clamping voltages improve protection performance by limiting voltage excursions more aggressively.

Q: What is the significance of the 24V reverse standoff voltage?

A: The 24V reverse standoff voltage defines the normal operating bias point of the TVS diode. All recommended substitutes maintain this 24V rating to ensure the diode remains non-conducting during normal circuit operation and activates only during transient overvoltage events.

Q: Are all substitute parts available in SOD-323 packaging?

A: Yes, all recommended substitutes use the SOD-323 (SC-76) package format, ensuring mechanical and electrical compatibility with the original PCB layout. The CPDF24V variant uses a 1005/SOD-323F package, which is a different footprint and not recommended for direct substitution.

Q: Does the higher peak pulse current in substitute parts affect circuit compatibility?

A: No. Substitute parts with higher peak pulse current ratings (6A, 7A, 8A, 9A) are fully compatible. Higher current ratings indicate improved transient handling capability and do not negatively impact circuit operation. The circuit will draw only the current required by the transient event.

Q: Are automotive-qualified substitutes necessary for my application?

A: Automotive qualification (AEC-Q101) is required only if your application operates in automotive environments or requires automotive-grade reliability standards. The SP4024-01FTG-C and ESDLIN1524BJ parts carry this qualification. For general-purpose applications, non-automotive parts are acceptable.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape and Digi-Reel packaging are suitable for manual or small-volume assembly. Tape & Reel packaging is optimized for automated pick-and-place assembly in high-volume production. Both formats contain identical components; the difference is in the carrier format. Select based on your assembly process requirements.

Q: Can I substitute the ESDLIN1524BJ dual-voltage part for single-voltage protection?

A: Yes. The ESDLIN1524BJ provides both 15V and 24V protection channels in a single SOD-323 package. For 24V applications, the 24V channel (50V clamping, 3A peak pulse) is directly compatible with the original specification. The dual-channel design does not affect single-channel operation.