P6SMBJ170 Equivalent & Substitute Parts

Part Overview

The P6SMBJ170 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 145V reverse standoff voltage, 245.7V maximum clamping voltage, and 600W peak pulse power rating in a DO-214AA (SMB) package. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

P6SMBJ170

Littelfuse Inc.In Stock: 1085P6SMBJ170 Datasheet

Current PartRFQ

SMBJP6KE170A-TP

Micro Commercial CoIn Stock: 3193SMBJP6KE170A-TP Datasheet

UpgradeRFQ

P6SMB170A

Eaton - Electronics DivisionIn Stock: 41310P6SMB170A Datasheet

MFR RecommendedRFQ

TVP06B171A-G

Comchip TechnologyIn Stock: 1148TVP06B171A-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMBJ170 is determined by the following critical electrical and mechanical parameters:

• Reverse Standoff Voltage (Typ): 145V — all substitutes maintain this specification
• Unidirectional Configuration: Single channel protection — all substitutes are unidirectional
• Peak Pulse Current: 2.6A nominal — substitutes maintain 2.6A or 2.56A
• Peak Pulse Power: 600W — all substitutes rated at 600W
• Package Type: DO-214AA (SMB) surface mount — all substitutes use identical package
• Clamping Voltage Range: 234V–245.7V @ Ipp — all substitutes clamp within acceptable operating range
• RoHS Compliance: ROHS3 compliant — all substitutes meet environmental standards

The three substitute parts listed below meet all critical electrical parameters and package requirements for direct replacement in the same circuit application.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with current manufacturing status, providing long-term availability compared to the obsolete P6SMBJ170. Selection among the substitutes is based on the following factors:

SMBJP6KE170A-TP (Micro Commercial Co) — Offers the widest operating temperature range (-65°C to 150°C), providing enhanced performance in extreme cold environments. Supplied in Tape & Reel packaging for automated assembly. ROHS3 compliant with REACH unaffected status.

P6SMB170A (Eaton) — Maintains identical operating temperature range (-55°C to 150°C) as the original part. Highest inventory availability (41,300 pcs) ensures supply continuity. Suitable for telecom applications. RoHS compliant.

TVP06B171A-G (Comchip) — Provides equivalent electrical performance with 2.56A peak pulse current (within 1.5% of original specification). Supplied in Tape & Reel packaging. ROHS3 compliant with REACH unaffected status.

All three substitutes maintain the critical 145V reverse standoff voltage, 600W power rating, and DO-214AA package form factor required for direct circuit replacement.

Frequently Asked Questions (FAQ)

Q: Can P6SMB170A be used as a direct replacement for P6SMBJ170?

A: Yes. Both parts share identical reverse standoff voltage (145V), peak pulse power (600W), peak pulse current (2.6A), and DO-214AA package specifications. The clamping voltage of P6SMB170A (234V) is within the acceptable operating range for this application class.

Q: What is the difference between the clamping voltages listed for these parts?

A: The P6SMBJ170 specifies 245.7V maximum clamping voltage, while the three substitutes specify 234V. Both values fall within the normal operating envelope for 145V standoff TVS diodes and do not affect circuit compatibility. The lower clamping voltage of the substitutes provides slightly improved transient suppression.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts use the DO-214AA (SMB) surface-mount package, ensuring mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Q: Which substitute offers the best temperature performance?

A: SMBJP6KE170A-TP operates from -65°C to 150°C, extending the lower temperature limit by 10°C compared to the original part and the other two substitutes, which operate from -55°C to 150°C.

Q: Are all substitutes RoHS compliant?

A: Yes. All three substitutes meet RoHS environmental standards. SMBJP6KE170A-TP and TVP06B171A-G are ROHS3 compliant. P6SMB170A is RoHS compliant.

Q: What is the inventory status of these substitutes?

A: SMBJP6KE170A-TP has 3,121 pcs in stock. P6SMB170A has 41,300 pcs in stock (highest availability). TVP06B171A-G has 1,069 pcs in stock.