P6SMB170A Equivalent & Substitute Parts

Part Overview

The P6SMB170A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This surface-mount component operates with a reverse standoff voltage of 145V and provides clamping at 234V maximum, with a peak pulse current rating of 2.6A. The part is currently in active production status with substantial inventory availability (41,300 pieces in stock). Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and design optimization across compatible electrical and mechanical specifications.

Substiute Parts

P6SMB170A

Littelfuse Inc.In Stock: 41356P6SMB170A Datasheet

Current PartRFQ

P6SMB170A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 12469P6SMB170A-E3/52 Datasheet

DirectRFQ

SMBJP6KE170A-TP

Micro Commercial CoIn Stock: 3193SMBJP6KE170A-TP Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB170A are qualified based on electrical parameter equivalence and mechanical compatibility. The critical substitution criteria are:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff: 145V
• Voltage - Breakdown (Min): 162V
• Voltage - Clamping (Max) @ Ipp: 234V
• Current - Peak Pulse (10/1000µs): 2.6A
• Power - Peak Pulse: 600W
• Type: Zener, Unidirectional (1 channel)

Mechanical Parameters (Must Match):

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the P6SMB170A in general-purpose transient voltage suppression applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active-status components with ROHS3 compliance and MSL 1 rating, confirming suitability for general-purpose transient voltage suppression. Selection between the P6SMB170A and its substitutes should be based on:

Procurement Availability: The P6SMB170A (Littelfuse) offers the highest inventory level at 41,300 pieces, followed by P6SMB170A-E3/52 (Vishay) at 12,400 pieces, and SMBJP6KE170A-TP (Micro Commercial Co) at 3,121 pieces.

Operating Temperature Range: The P6SMB170A operates from -55°C to 150°C (TJ), while both substitute parts extend the lower temperature limit to -65°C (TJ). Applications requiring operation below -55°C should specify P6SMB170A-E3/52 or SMBJP6KE170A-TP.

Packaging Format: The P6SMB170A is supplied in Cut Tape and Digi-Reel formats, while substitute parts are supplied in Tape & Reel format. Packaging selection depends on assembly line requirements and volume specifications.

Frequently Asked Questions (FAQ)

Q: Can P6SMB170A-E3/52 be used as a direct replacement for P6SMB170A?

A: Yes. Both parts share identical electrical specifications (145V standoff, 234V clamping, 2.6A peak pulse current, 600W peak power), the same DO-214AA SMB package, and equivalent compliance certifications (ROHS3, MSL 1). The primary difference is the extended operating temperature range (-65°C to 150°C versus -55°C to 150°C) and packaging format (Tape & Reel versus Cut Tape/Digi-Reel).

Q: Is SMBJP6KE170A-TP electrically equivalent to P6SMB170A?

A: Yes. SMBJP6KE170A-TP meets all electrical and mechanical requirements for substitution, including voltage ratings, current ratings, power dissipation, package type, and compliance standards. It is suitable for applications where the P6SMB170A is specified.

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by matching: Voltage - Reverse Standoff (145V), Voltage - Breakdown (162V minimum), Voltage - Clamping (234V maximum), Current - Peak Pulse (2.6A), Power - Peak Pulse (600W), package type (DO-214AA SMB), mounting method (Surface Mount), and compliance status (ROHS3, MSL 1).

Q: Does operating temperature range affect substitution eligibility?

A: Operating temperature range does not disqualify substitution but should be considered for application-specific requirements. The P6SMB170A operates from -55°C to 150°C, while P6SMB170A-E3/52 and SMBJP6KE170A-TP operate from -65°C to 150°C. Applications requiring temperatures below -55°C must use the extended-range alternatives.

Q: Are there packaging considerations when substituting these parts?

A: Yes. The P6SMB170A is supplied in Cut Tape and Digi-Reel formats, while P6SMB170A-E3/52 and SMBJP6KE170A-TP are supplied in Tape & Reel format. Assembly equipment compatibility and volume requirements should be evaluated before substitution.

Q: Do all substitute parts have the same RoHS and MSL ratings?

A: Yes. All three parts are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited), confirming equivalent environmental and handling compliance across all options.