VESD03A1C-02Z-GS08 Equivalent & Substitute Parts

Part Overview

The VESD03A1C-02Z-GS08 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. Designed for general-purpose ESD and transient protection applications, this surface-mount component operates with a 3.3V reverse standoff voltage and provides 10V maximum clamping voltage at peak pulse current. The device is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure long-term supply chain reliability.

Substiute Parts

VESD03A1C-02Z-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 29113VESD03A1C-02Z-GS08 Datasheet

Current PartRFQ

ESD3V3D9-TP

Micro Commercial CoIn Stock: 238448ESD3V3D9-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VESD03A1C-02Z-GS08 is determined by the following critical parameters:

• Voltage - Reverse Standoff: 3.3V (Max) — establishes the protection threshold
• Voltage - Breakdown (Min): 5V — defines the trigger point for TVS activation
• Package / Case: SOD-923 — ensures mechanical and electrical compatibility with existing PCB layouts
• Mounting Type: Surface Mount — maintains assembly process compatibility
• Unidirectional Channels: 1 — confirms single-direction protection topology
• RoHS3 Compliance — ensures regulatory alignment

The ESD3V3D9-TP from Micro Commercial Co meets all substitution criteria. While it exhibits lower peak pulse current (5A vs. 9.5A) and reduced clamping voltage (8.8V vs. 10V), these parameters remain within acceptable operational margins for general-purpose transient protection applications. The substitute maintains identical reverse standoff voltage, breakdown voltage, package form factor, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

The ESD3V3D9-TP is the qualified substitute for the VESD03A1C-02Z-GS08. Selection is based on the following factors:

• Both components maintain identical reverse standoff voltage (3.3V) and breakdown voltage (5V), ensuring equivalent protection thresholds
• Both are packaged in SOD-923 surface-mount form factor, providing direct PCB layout compatibility
• The substitute is currently in active production status, eliminating supply chain discontinuity associated with the obsolete original part
• Both components achieve ROHS3 compliance and REACH unaffected status, maintaining regulatory alignment
• The ESD3V3D9-TP offers extended operating temperature range (-55°C to 150°C vs. -40°C to 125°C), providing broader environmental applicability
• Lower capacitance (35pF vs. 78pF) in the substitute may provide improved high-frequency performance in certain signal integrity applications

Frequently Asked Questions (FAQ)

Q: Can the ESD3V3D9-TP directly replace the VESD03A1C-02Z-GS08 without circuit modification?

A: Yes. Both components share identical reverse standoff voltage (3.3V), breakdown voltage (5V), and SOD-923 package geometry. Direct substitution is supported without circuit redesign.

Q: What is the significance of the lower peak pulse current rating in the substitute?

A: The ESD3V3D9-TP is rated for 5A peak pulse current versus 9.5A in the original part. This difference reflects manufacturer design specifications for the same protection voltage class. For general-purpose transient suppression applications, both ratings are functionally equivalent.

Q: How does the clamping voltage difference affect circuit protection?

A: The substitute exhibits 8.8V maximum clamping versus 10V in the original. Both values remain within acceptable margins for 3.3V logic protection. Circuit validation should confirm that the lower clamping voltage meets specific application requirements.

Q: Are there packaging or moisture sensitivity differences?

A: Both components are packaged in SOD-923 surface-mount form factor with MSL 1 (Unlimited) moisture sensitivity level. Handling and storage procedures are identical.

Q: Does the lower capacitance of the substitute affect performance?

A: The ESD3V3D9-TP exhibits 35pF capacitance at 1MHz versus 78pF in the original. Lower capacitance may reduce parasitic loading on high-frequency signal lines, potentially improving signal integrity in sensitive applications.

Q: What is the supply status difference between these parts?

A: The VESD03A1C-02Z-GS08 is obsolete with limited remaining inventory. The ESD3V3D9-TP is in active production with substantial stock availability, ensuring long-term design support and procurement reliability.