VESD12-02V-G-08 Equivalent & Substitute Parts

Part Overview

The VESD12-02V-G-08 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for general-purpose overvoltage protection in surface-mount applications using the SOD-523 package. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain compatibility with the 12V reverse standoff voltage rating and SOD-523 package form factor while meeting or exceeding the electrical performance specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	12V (Max)	V
Voltage - Breakdown (Min)	14V	V
Voltage - Clamping (Max) @ Ipp	25V (Typ)	V
Current - Peak Pulse (8/20µs)	2A	A
Power - Peak Pulse	25W	W
Package / Case	SOD-523	—
Mounting Type	Surface Mount	—
Operating Temperature	-40°C ~ 125°C (TJ)	°C
Capacitance @ 1MHz	30pF	pF
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the VESD12-02V-G-08 are selected based on the following critical parameters:

Voltage - Reverse Standoff (Typ): Must be 12V (Max) to maintain circuit protection threshold compatibility
Package / Case: Must be SOD-523 for mechanical and electrical footprint compatibility
Mounting Type: Must be Surface Mount for assembly process compatibility
Voltage - Clamping (Max) @ Ipp: Should be within acceptable range (22.7V to 35V) to ensure transient suppression effectiveness
Current - Peak Pulse (8/20µs): Should meet or exceed 2A minimum requirement for adequate surge handling
RoHS Status: Must maintain ROHS3 compliance for regulatory alignment

Substitute parts are grouped into two categories: direct electrical equivalents with matching 12V standoff voltage, and alternative voltage-rated options that may serve specific application requirements while maintaining the same package and mounting specifications.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (8/20µs)	Power - Peak Pulse	Package	Product Status	Operating Temperature
VESD12-02V-G-08	Vishay	12V (Max)	14V	25V (Typ)	2A	25W	SOD-523	Obsolete	-40°C ~ 125°C (TJ)
VESD12C1-02V-G3-08	Vishay	12V (Max)	13.9V	22.7V	4.4A	100W	SOD-523	Active	-55°C ~ 150°C (TJ)
ESD5Z12T1G	onsemi	12V (Max)	14.1V	25V	9.6A	240W	SOD-523	Active	-55°C ~ 150°C (TJ)
ESD5Z12T5G	onsemi	12V (Max)	14.1V	25V	9.6A	240W	SOD-523	Active	-55°C ~ 150°C (TJ)
PESD12VS1UB,115	Nexperia USA Inc.	12V (Max)	14.7V	35V	5A	180W	SOD-523	Active	-65°C ~ 150°C (TA)
CPDH5V0U	Comchip Technology	5V	6V	12.5V	16A	200W	SOD-523	Active	—
PESD15VS1UB,115	Nexperia USA Inc.	15V (Max)	17.6V	40V	5A	160W	SOD-523	Active	-65°C ~ 150°C (TA)
PESD24VS1UB,115	Nexperia USA Inc.	24V (Max)	26.5V	70V	3A	160W	SOD-523	Active	-65°C ~ 150°C (TA)
PESD3V3L1UB,115	Nexperia USA Inc.	3.3V (Max)	5.3V	11V	4.5A	45W	SOD-523	Active	-55°C ~ 150°C (TA)
PESD3V3S1UB,115	Nexperia USA Inc.	3.3V (Max)	5.2V	20V	18A	330W	SOD-523	Active	-65°C ~ 150°C (TA)
PESD3V3U1UB,115	Nexperia USA Inc.	3.3V (Max)	4.5V	—	—	—	SOD-523	Active	-55°C ~ 150°C (TA)

Engineering Selection Recommendations

Primary Substitutes (12V Standoff Voltage - Direct Equivalents):

VESD12C1-02V-G3-08, ESD5Z12T1G, ESD5Z12T5G, and PESD12VS1UB,115 are direct electrical equivalents with 12V reverse standoff voltage matching the original VESD12-02V-G-08. All are active products in SOD-523 packaging. VESD12C1-02V-G3-08 is a Vishay product offering automotive-grade qualification (AEC-Q101) with extended temperature range (-55°C ~ 150°C). ESD5Z12T1G and ESD5Z12T5G from onsemi provide higher peak pulse current (9.6A) and power dissipation (240W) compared to the original 2A/25W specification. PESD12VS1UB,115 from Nexperia includes automotive qualification (AEC-Q100) with the highest clamping voltage (35V) among 12V standoff options.

Alternative Voltage Ratings (Non-Direct Equivalents):

PESD15VS1UB,115 (15V standoff), PESD24VS1UB,115 (24V standoff), PESD3V3L1UB,115, PESD3V3S1UB,115, and PESD3V3U1UB,115 (3.3V standoff) are alternative voltage-rated TVS diodes in SOD-523 packaging. These parts are suitable only for applications where the circuit protection threshold differs from the original 12V specification. CPDH5V0U (5V standoff) is a manufacturer-recommended alternative with high peak pulse current (16A) but requires circuit redesign validation for voltage compatibility.

All substitute parts maintain ROHS3 compliance and SOD-523 surface-mount packaging. Selection should prioritize active products with matching voltage ratings for direct replacement scenarios.

Frequently Asked Questions (FAQ)

Q: Can VESD12C1-02V-G3-08 directly replace VESD12-02V-G-08?

A: Yes. Both parts share 12V reverse standoff voltage, SOD-523 packaging, and surface-mount configuration. VESD12C1-02V-G3-08 is an active Vishay product with improved specifications (4.4A peak pulse current vs. 2A, 100W power vs. 25W) and extended operating temperature range (-55°C ~ 150°C vs. -40°C ~ 125°C).

Q: What is the difference between ESD5Z12T1G and ESD5Z12T5G?

A: Both parts are onsemi products with identical electrical specifications (12V standoff, 25V clamping, 9.6A peak pulse current, 240W power dissipation) and SOD-523 packaging. The difference lies in packaging format: ESD5Z12T1G is supplied in Cut Tape (CT) & Digi-Reel format, while ESD5Z12T5G is also available in the same format. Electrical performance is equivalent.

Q: Can I use PESD3V3S1UB,115 as a substitute for VESD12-02V-G-08?

A: No. PESD3V3S1UB,115 has a 3.3V reverse standoff voltage, which is incompatible with the original 12V protection threshold. This part is suitable only for 3.3V logic circuits and would not provide adequate protection in 12V applications.

Q: Why is CPDH5V0U listed as a manufacturer-recommended alternative?

A: CPDH5V0U is a Comchip Technology TVS diode in SOD-523 packaging with 5V standoff voltage. It is listed in the original part's substitute field but requires circuit validation due to voltage rating mismatch. Use only if your application requires 5V protection.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental and regulatory requirements of the original VESD12-02V-G-08.

Q: What is the advantage of PESD12VS1UB,115 over other 12V options?

A: PESD12VS1UB,115 from Nexperia includes automotive-grade qualification (AEC-Q100) and operates across an extended temperature range (-65°C ~ 150°C). It provides the highest clamping voltage (35V) among 12V standoff substitutes, offering enhanced transient suppression margin in demanding automotive applications.

Q: Can I mix different substitute parts in the same circuit board design?

A: Yes, provided all selected parts maintain the same 12V reverse standoff voltage and SOD-523 packaging. Mixing parts with different voltage ratings (e.g., 12V and 15V standoff) in the same design requires separate circuit validation for each voltage class.

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