TV02W170-G Equivalent & Substitute Parts

Part Overview

The TV02W170-G is a unidirectional transient voltage suppressor (TVS) diode manufactured by Comchip Technology, designed for general-purpose overvoltage protection applications. This surface-mount component operates with a 17V reverse standoff voltage and provides 27.6V clamping at peak pulse current. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory availability, lead time considerations, or specific application requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	17	V
Voltage - Breakdown (Min)	18.9	V
Voltage - Clamping (Max) @ Ipp	27.6	V
Current - Peak Pulse (10/1000µs)	7.25	A
Power - Peak Pulse	200	W
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Type	Zener	—
Unidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the TV02W170-G is determined by the following critical parameters:

Voltage - Reverse Standoff: 17V (exact match required)
Voltage - Clamping (Max) @ Ipp: 27.6V (exact match required)
Voltage - Breakdown (Min): 18.9V (exact match required)
Type: Zener, unidirectional configuration
Mounting Type: Surface Mount
RoHS3 Compliance: Required

The identified substitute parts maintain these core electrical specifications. Variations in package designation (SOD-123, SOD-123W, SOD-123F) and peak pulse current ratings are permitted within the substitution framework, as these represent different physical implementations of equivalent voltage protection characteristics. Package variants must be mechanically compatible with the target PCB layout.

Parameter Comparison

Parameter	TV02W170-G (Comchip)	PTVS17VS1UR,115 (Nexperia)	SMF17A (Diotec)
Manufacturer	Comchip Technology	Nexperia USA Inc.	Diotec Semiconductor
Voltage - Reverse Standoff (Typ)	17V	17V	17V
Voltage - Breakdown (Min)	18.9V	18.9V	18.9V
Voltage - Clamping (Max) @ Ipp	27.6V	27.6V	27.6V
Current - Peak Pulse (10/1000µs)	7.25A	14.5A	7.25A
Power - Peak Pulse	200W	400W	200W
Operating Temperature Range	-55 to 150°C (TJ)	-55 to 150°C (TA)	-50 to 150°C (TJ)
Package / Case	SOD-123	SOD-123W	SOD-123F
Type	Zener	Zener	Zener
Unidirectional Channels	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts maintain identical voltage protection characteristics (17V standoff, 27.6V clamping) and are suitable for equivalent circuit protection applications. Selection between these options should be based on the following factors:

TV02W170-G (Comchip Technology): Primary choice when SOD-123 package footprint is specified. Maintains 200W peak pulse power rating and 7.25A peak pulse current. Active production status with 1060 units in stock.

PTVS17VS1UR,115 (Nexperia USA Inc.): Qualified to AEC-Q101 automotive standard with enhanced current handling (14.5A peak pulse) and doubled power dissipation capability (400W). Packaged in SOD-123W variant. Recommended for automotive applications or designs requiring higher transient current capacity. 18760 units in stock.

SMF17A (Diotec Semiconductor): Equivalent electrical performance to the primary part with 200W peak pulse power and 7.25A peak pulse current. Packaged in SOD-123F (SMF) variant. Operating temperature range extends to -50°C minimum. 1930 units in stock.

All parts carry ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Package selection must align with PCB layout and assembly process specifications.

Frequently Asked Questions (FAQ)

Q: Can PTVS17VS1UR,115 be used as a direct replacement for TV02W170-G?

A: Yes, from an electrical standpoint. Both parts maintain identical voltage specifications (17V standoff, 27.6V clamping). However, the package differs: PTVS17VS1UR,115 uses SOD-123W while TV02W170-G uses SOD-123. PCB footprint compatibility must be verified before substitution.

Q: What is the difference between SOD-123, SOD-123W, and SOD-123F packages?

A: These are physical package variants of the same diode family. SOD-123 is the standard form factor, SOD-123W is a wider variant, and SOD-123F (SMF) is another variant designation. All are surface-mount packages with identical lead spacing but different body dimensions. Footprint compatibility with your PCB design is required.

Q: Why does PTVS17VS1UR,115 have higher peak pulse current (14.5A vs 7.25A)?

A: This reflects the enhanced thermal and electrical design of the Nexperia part, resulting in doubled power dissipation capability (400W vs 200W). The voltage protection characteristics remain identical. Higher current rating provides additional margin for transient suppression but does not change the clamping voltage.

Q: Are all three parts RoHS3 compliant?

A: Yes. TV02W170-G, PTVS17VS1UR,115, and SMF17A all carry ROHS3 Compliant status and are suitable for applications requiring lead-free component qualification.

Q: What is the significance of AEC-Q101 qualification on PTVS17VS1UR,115?

A: AEC-Q101 is an automotive industry qualification standard. PTVS17VS1UR,115 meets this specification, making it suitable for automotive circuit protection applications where this certification is required. The other parts do not carry this designation.

Q: Can I use SMF17A if my design specifies TV02W170-G?

A: Electrical substitution is valid due to identical voltage specifications. However, the package differs (SOD-123F vs SOD-123). PCB footprint compatibility must be confirmed. Operating temperature minimum differs slightly (-50°C vs -55°C), which may be relevant for extreme environment applications.

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