P6SMB510C Equivalent & Substitute Parts

Part Overview

The P6SMB510C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This bidirectional Zener diode operates with a reverse standoff voltage of 434V and provides clamping at 732.9V maximum. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and new designs.

Substiute Parts

P6SMB510C

Littelfuse Inc.In Stock: 1187P6SMB510C Datasheet

Current PartRFQ

P6SMB510CA

Eaton - Electronics DivisionIn Stock: 5426P6SMB510CA Datasheet

MFR RecommendedRFQ

P6SMB510CA

Eaton - Electronics DivisionIn Stock: 5426P6SMB510CA Datasheet

MFR RecommendedRFQ

SMBJP6KE510CA-TP

Micro Commercial CoIn Stock: 14349SMBJP6KE510CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB510C is determined by strict equivalence across the following critical parameters:

• Reverse standoff voltage: 434V (identical across all candidates)
• Peak pulse current rating: 900mA (identical across all candidates)
• Peak pulse power: 600W (identical across all candidates)
• Package/case format: DO-214AA, SMB (surface mount compatibility)
• Bidirectional channels: 1 (single channel configuration)
• Type: Zener diode (functional classification)

The substitute parts P6SMB510CA and SMBJP6KE510CA-TP maintain these core electrical specifications. Clamping voltage variations (698V vs. 732.9V) and breakdown voltage differences fall within the allowable parameter ranges for this product category and do not preclude substitution. Both substitute parts are active products with current manufacturing status, addressing the obsolescence of the original P6SMB510C.

Parameter Comparison

Engineering Selection Recommendations

Both P6SMB510CA and SMBJP6KE510CA-TP are qualified substitutes for the obsolete P6SMB510C based on electrical parameter equivalence and active product status.

P6SMB510CA (Eaton - Electronics Division) is the manufacturer-recommended equivalent, maintaining identical operating temperature range (-55°C ~ 150°C) and RoHS compliance certification. This part is available in tape and reel packaging and is designated for telecom applications.

SMBJP6KE510CA-TP (Micro Commercial Co) provides an extended operating temperature range (-55°C ~ 175°C), offering enhanced thermal performance for applications requiring higher junction temperature tolerance. This part is ROHS3 compliant and REACH unaffected, with higher current inventory availability.

Selection between these substitutes depends on application-specific temperature requirements and supply chain considerations. Both parts maintain identical mechanical compatibility with the original DO-214AA (SMB) package footprint and surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can P6SMB510CA and SMBJP6KE510CA-TP be used interchangeably with P6SMB510C?

A: Both parts meet the core electrical specifications (434V standoff, 900mA peak pulse current, 600W peak power) and package requirements (DO-214AA SMB surface mount). They are direct functional equivalents for the obsolete P6SMB510C.

Q: What is the significance of the clamping voltage difference (732.9V vs. 698V)?

A: The clamping voltage variation falls within the allowable parameter range for this TVS diode category. Both substitute parts clamp at lower voltages than the original, providing equivalent or improved overvoltage protection performance. Circuit validation should confirm suitability for specific application voltage thresholds.

Q: Does the extended temperature range of SMBJP6KE510CA-TP affect compatibility?

A: The extended range (-55°C ~ 175°C vs. -55°C ~ 150°C) represents enhanced capability and does not compromise compatibility. Selection should be based on application thermal requirements.

Q: Are both substitutes RoHS compliant?

A: Yes. P6SMB510CA is RoHS compliant, and SMBJP6KE510CA-TP is ROHS3 compliant. Both meet regulatory requirements for restricted substance use.

Q: What packaging options are available for these substitutes?

A: P6SMB510CA is supplied in tape and reel (TR) packaging. SMBJP6KE510CA-TP is also supplied in tape and reel format. Both are compatible with automated surface mount assembly processes.

Q: How do the breakdown voltage specifications compare?

A: The original P6SMB510C specifies 459V minimum breakdown, while both substitutes specify 485V minimum. This represents a tighter specification and does not affect substitution suitability.