VESD12A1C-02Z-GS08 Equivalent & Substitute Parts

Part Overview

The VESD12A1C-02Z-GS08 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for general-purpose transient voltage protection in surface-mount applications using SOD-923 packaging. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity.

Substiute Parts

VESD12A1C-02Z-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 8463VESD12A1C-02Z-GS08 Datasheet

Current PartRFQ

ESD12VD9-TP

Micro Commercial CoIn Stock: 230452ESD12VD9-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS diodes is determined by the following critical electrical parameters:

• Voltage - Reverse Standoff (Typ): Must match at 12V (Max) to ensure proper circuit protection threshold
• Voltage - Breakdown (Min): Must match at 13.5V minimum to maintain consistent trigger characteristics
• Package / Case: Must be SOD-923 surface mount for mechanical and thermal compatibility
• Unidirectional Configuration: Single-channel Zener type required for application compatibility
• RoHS Compliance: ROHS3 Compliant status required for regulatory alignment

The ESD12VD9-TP from Micro Commercial Co meets these core substitution criteria. While secondary parameters such as clamping voltage, peak pulse current, and capacitance differ, the primary voltage protection thresholds and package specifications align with the VESD12A1C-02Z-GS08 functional requirements.

Parameter Comparison

Engineering Selection Recommendations

The ESD12VD9-TP is a direct functional substitute for the obsolete VESD12A1C-02Z-GS08 based on the following criteria:

• Voltage Protection Alignment: Both parts maintain identical reverse standoff voltage (12V Max) and breakdown voltage (13.5V Min), ensuring equivalent circuit protection thresholds
• Package Compatibility: Both use SOD-923 surface-mount packaging, allowing direct PCB layout compatibility without redesign
• Regulatory Compliance: Both are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements
• Active Product Status: The ESD12VD9-TP is actively manufactured and stocked, providing long-term procurement availability compared to the obsolete VESD12A1C-02Z-GS08
• Extended Temperature Range: The ESD12VD9-TP supports -55°C to 150°C operating range, exceeding the original part's -40°C to 125°C range

Frequently Asked Questions (FAQ)

Q: Can the ESD12VD9-TP directly replace the VESD12A1C-02Z-GS08 without circuit modification?

A: Yes. Both parts share identical reverse standoff voltage (12V Max), breakdown voltage (13.5V Min), and SOD-923 package specifications. Direct substitution is supported at the circuit level without PCB layout changes.

Q: What are the differences in clamping voltage and peak pulse current between these parts?

A: The VESD12A1C-02Z-GS08 specifies 23V clamping at 4A peak pulse, while the ESD12VD9-TP specifies 18.4V clamping at 1A peak pulse. These secondary parameters reflect different transient energy handling capabilities. Circuit validation is required to confirm the ESD12VD9-TP meets application-specific transient suppression requirements.

Q: Why is the ESD12VD9-TP recommended despite lower peak pulse current?

A: The ESD12VD9-TP is actively manufactured and maintains the critical voltage protection thresholds (12V standoff, 13.5V breakdown) that define TVS diode functionality. The lower peak pulse current reflects a different design point within the 12V protection class. Application requirements determine whether this specification is acceptable.

Q: Are there packaging or moisture sensitivity differences?

A: No. Both parts use SOD-923 surface-mount packaging with MSL 1 (Unlimited) moisture sensitivity rating, ensuring identical handling and storage requirements.

Q: What is the temperature operating range difference?

A: The ESD12VD9-TP supports -55°C to 150°C (TJ), compared to the VESD12A1C-02Z-GS08 range of -40°C to 125°C (TJ). The substitute part provides extended low-temperature and high-temperature capability.