TV02W400-G Equivalent & Substitute Parts

Part Overview

The TV02W400-G is a unidirectional transient voltage suppressor (TVS) diode manufactured by Comchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This active product operates across a temperature range of -55°C to 150°C and is packaged in SOD-123 format. Substitute parts are identified to provide equivalent electrical performance and mechanical compatibility for applications requiring TVS protection at 40V reverse standoff voltage with 64.5V clamping characteristics.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	40V
Voltage - Breakdown (Min)	44.4V
Voltage - Clamping (Max) @ Ipp	64.5V
Current - Peak Pulse (10/1000µs)	3.1A
Power - Peak Pulse	200W
Type	Zener
Unidirectional Channels	1
Mounting Type	Surface Mount
Package / Case	SOD-123
Operating Temperature	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical electrical parameters: reverse standoff voltage (40V), breakdown voltage minimum (44.4V), clamping voltage maximum (64.5V), and unidirectional channel configuration (1 channel). All identified substitutes maintain these core electrical specifications.

Substitute parts are grouped into two categories based on peak pulse current and power dissipation capacity:

Category A - Enhanced Performance (6.2A / 400W): PTVS40VS1UR,115 and PTVS40VS1UTR,115 from Nexperia USA Inc. These parts provide double the peak pulse current and power handling compared to the main part, with automotive-grade qualification (AEC-Q101) and extended temperature range options.

Category B - Equivalent Performance (3.1A / 200W): SMF40A-T13 from Littelfuse Inc. and SMF40A from Meritek. These parts match the electrical performance specifications of the main part exactly, with identical peak pulse current and power dissipation.

Package variations exist across substitutes: SOD-123W (Nexperia parts) and SOD-123F/SOD-123FL (Littelfuse and Meritek parts) represent mechanical alternatives to the original SOD-123 package.

Parameter Comparison

Parameter	TV02W400-G (Main)	PTVS40VS1UR,115	PTVS40VS1UTR,115	SMF40A-T13	SMF40A
Manufacturer	Comchip Technology	Nexperia USA Inc.	Nexperia USA Inc.	Littelfuse Inc.	Meritek
Voltage - Reverse Standoff (Typ)	40V	40V	40V	40V	40V
Voltage - Breakdown (Min)	44.4V	44.4V	44.4V	44.4V	44.4V
Voltage - Clamping (Max) @ Ipp	64.5V	64.5V	64.5V	64.5V	64.5V
Current - Peak Pulse (10/1000µs)	3.1A	6.2A	6.2A	3.1A	3.1A
Power - Peak Pulse	200W	400W	400W	200W	200W
Type	Zener	Zener	Zener	Zener	Zener
Unidirectional Channels	1	1	1	1	1
Package / Case	SOD-123	SOD-123W	SOD-123W	SOD-123F	SOD-123FL
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 185°C	-55°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance, ensuring regulatory alignment with the main part. Selection between substitutes depends on application-specific requirements:

For applications requiring enhanced transient protection capacity, PTVS40VS1UR,115 and PTVS40VS1UTR,115 provide doubled peak pulse current (6.2A) and power dissipation (400W) with automotive-grade AEC-Q101 qualification. PTVS40VS1UTR,115 extends the operating temperature range to 185°C, suitable for high-temperature environments.

For applications with electrical specifications matching the original design, SMF40A-T13 and SMF40A provide equivalent 3.1A peak pulse current and 200W power dissipation. SMF40A-T13 is supplied in tape and reel packaging, while SMF40A availability depends on packaging configuration.

Package compatibility must be verified during board redesign: SOD-123W (Nexperia), SOD-123F (Littelfuse), and SOD-123FL (Meritek) represent mechanical variants of the original SOD-123 package and may require PCB layout adjustments.

Frequently Asked Questions (FAQ)

Q: What electrical parameters determine if a part can substitute for TV02W400-G?

A: The critical parameters are reverse standoff voltage (40V), breakdown voltage minimum (44.4V), clamping voltage maximum (64.5V), and unidirectional channel configuration (1 channel). All listed substitutes match these specifications.

Q: Can PTVS40VS1UR,115 and PTVS40VS1UTR,115 be used as direct replacements?

A: These parts provide equivalent voltage protection with enhanced current and power handling (6.2A / 400W versus 3.1A / 200W). They are electrically compatible but require verification of package footprint compatibility, as they use SOD-123W instead of SOD-123.

Q: What is the difference between SMF40A-T13 and SMF40A?

A: Both parts provide identical electrical specifications (3.1A / 200W). SMF40A-T13 is supplied in tape and reel packaging (TR), while SMF40A packaging configuration is not specified in the provided data.

Q: Are all substitutes suitable for automotive applications?

A: PTVS40VS1UR,115 and PTVS40VS1UTR,115 carry AEC-Q101 automotive qualification. SMF40A-T13 and SMF40A are specified for general-purpose applications without automotive certification noted.

Q: Do package differences affect electrical performance?

A: Package variants (SOD-123, SOD-123W, SOD-123F, SOD-123FL) do not affect electrical performance. Differences are mechanical and require PCB layout verification during component substitution.

Q: What is the temperature range difference between PTVS40VS1UR,115 and PTVS40VS1UTR,115?

A: PTVS40VS1UR,115 operates from -55°C to 150°C, while PTVS40VS1UTR,115 extends to 185°C. Both maintain identical electrical specifications across their respective temperature ranges.

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