P6SMBJ170A Equivalent & Substitute Parts

Part Overview

The P6SMBJ170A is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 145V reverse standoff voltage, 234V maximum clamping voltage, and 600W peak pulse power rating in a surface-mount DO-214AA (SMB) package. The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives from active manufacturers to maintain design continuity and ensure supply chain availability.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	145	V
Voltage - Breakdown (Min)	162	V
Voltage - Clamping (Max) @ Ipp	234	V
Current - Peak Pulse (10/1000µs)	2.6	A
Power - Peak Pulse	600	W
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-55°C to 150°C	TJ
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution of the P6SMBJ170A is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 145V
Voltage - Breakdown (Min): 162V minimum
Voltage - Clamping (Max) @ Ipp: 234V
Current - Peak Pulse (10/1000µs): 2.6A
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Unidirectional Channels: 1
Type: Zener

All substitute parts listed maintain these electrical specifications within the defined tolerances and use identical or functionally equivalent packaging. Substitute parts are grouped by manufacturer and product status (active vs. obsolete), with packaging variants (Tape & Reel, Tape & Box) noted where applicable.

Parameter Comparison

Part Number	Manufacturer	VWM (V)	VBR (V)	VC (V)	Ipp (A)	Power (W)	Package	Status
P6SMBJ170A	Littelfuse Inc.	145	162	234	2.6	600	DO-214AA (SMBJ)	Obsolete
P6SMB170A	Eaton - Electronics Division	145	162	234	2.6	600	SMB	Active
P6SMB170A-E3/52	Vishay General Semiconductor - Diodes Division	145	162	234	2.6	600	DO-214AA (SMBJ)	Active
P6SMB170A-E3/5B	Vishay General Semiconductor - Diodes Division	145	162	234	2.6	600	DO-214AA (SMBJ)	Active
P6SMB170A-M3/52	Vishay General Semiconductor - Diodes Division	145	162	234	2.6	600	DO-214AA (SMBJ)	Active
P6SMB170A-M3/5B	Vishay General Semiconductor - Diodes Division	145	162	234	2.6	600	DO-214AA (SMBJ)	Active
SMBJP6KE170A-TP	Micro Commercial Co	145	162	234	2.6	600	DO-214AA (SMB)	Active
TVP06B171A-G	Comchip Technology	145	161.5	234	2.56	600	DO-214AA (SMB)	Active

Engineering Selection Recommendations

Direct substitutes for the P6SMBJ170A are available from multiple active manufacturers. The Vishay General Semiconductor variants (P6SMB170A-E3/52, P6SMB170A-E3/5B, P6SMB170A-M3/52, P6SMB170A-M3/5B) and the Eaton P6SMB170A offer full electrical and mechanical equivalence with ROHS3 compliance and active product status. The Micro Commercial Co SMBJP6KE170A-TP provides identical electrical performance with ROHS3 compliance. The Comchip Technology TVP06B171A-G maintains electrical equivalence within specified tolerances (VBR minimum 161.5V, Ipp 2.56A) and is ROHS3 compliant.

Selection among active alternatives should prioritize availability, lead time, and packaging format requirements (Tape & Reel vs. Tape & Box). All listed substitutes are suitable for direct replacement in applications requiring 145V standoff protection with 600W peak pulse capability.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB170A-E3/52 replace the obsolete P6SMBJ170A directly?

A: Yes. Both parts share identical electrical specifications (145V standoff, 162V breakdown minimum, 234V clamping, 2.6A peak pulse, 600W power rating) and use the DO-214AA (SMBJ) package. The primary difference is product status: P6SMBJ170A is obsolete while P6SMB170A-E3/52 is active. Packaging format (Tape & Reel) must be verified against assembly requirements.

Q: What is the difference between P6SMB170A-E3/52 and P6SMB170A-M3/52?

A: Both parts are manufactured by Vishay and share identical electrical specifications. The difference is packaging format: E3/52 uses Tape & Reel (TR) packaging, while M3/52 uses Tape & Box (TB) packaging. Electrical performance and DO-214AA (SMBJ) package dimensions are equivalent.

Q: Is the Comchip TVP06B171A-G a suitable substitute?

A: Yes. The TVP06B171A-G meets the electrical requirements with VBR minimum of 161.5V (within tolerance of the 162V specification), clamping voltage of 234V, and peak pulse current of 2.56A (within tolerance of 2.6A). It uses the DO-214AA (SMB) package and is ROHS3 compliant. Verify application-specific tolerance requirements before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, meeting environmental and hazardous substance restrictions for electronic components.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in Tape & Reel (TR) and Tape & Box (TB) formats. Tape & Reel packaging is standard for automated assembly processes, while Tape & Box is used for manual or lower-volume applications. Verify packaging compatibility with your assembly equipment before procurement.

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