P6SMB510 Equivalent & Substitute Parts

Part Overview

The P6SMB510 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 434V reverse standoff voltage with 732.9V maximum clamping voltage and 900mA peak pulse current capability in a surface-mount DO-214AA (SMB) package.

The P6SMB510 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production and field replacements.

Substiute Parts

P6SMB510

Littelfuse Inc.In Stock: 814P6SMB510 Datasheet

Current PartRFQ

P6SMB510A

Eaton - Electronics DivisionIn Stock: 19680P6SMB510A Datasheet

MFR RecommendedRFQ

P6SMB510A

Eaton - Electronics DivisionIn Stock: 19680P6SMB510A Datasheet

MFR RecommendedRFQ

SMBJP6KE510A-TP

Micro Commercial CoIn Stock: 6699SMBJP6KE510A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB510 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 434V (must match)
• Unidirectional Channels: 1 (must match)
• Current - Peak Pulse (10/1000µs): 900mA (must match)
• Power - Peak Pulse: 600W (must match)
• Type: Zener (must match)

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount (must match)
• Package / Case: DO-214AA, SMB (must match)

Acceptable Variations:

• Voltage - Clamping (Max) @ Ipp: Lower values are acceptable (732.9V down to 698V)
• Voltage - Breakdown (Min): Variations within the 434V standoff specification are acceptable
• Operating Temperature Range: Extended ranges are acceptable
• Product Status: Active status preferred over obsolete
• RoHS Compliance: ROHS3 or RoHS Compliant both acceptable

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts meet the electrical and mechanical requirements for direct replacement of the P6SMB510:

P6SMB510A (Eaton - Electronics Division): This part is the manufacturer-recommended substitute with active product status. It maintains identical electrical specifications for reverse standoff voltage, peak pulse current, and power dissipation. The clamping voltage is reduced to 698V, which is within acceptable operating parameters. RoHS compliance is confirmed. This part is available in high volume (19,620 pcs in stock).

SMBJP6KE510A-TP (Micro Commercial Co): This part is also a direct electrical equivalent with active product status. It provides an extended operating temperature range (-55°C ~ 175°C) compared to the original specification. The clamping voltage is identical to the Eaton substitute at 698V. ROHS3 compliance is confirmed. This part is available in moderate volume (6,604 pcs in stock).

Both substitutes are suitable for applications requiring the P6SMB510. Selection between them should be based on supply chain availability, lead time requirements, and any application-specific temperature operating conditions.

Frequently Asked Questions (FAQ)

Q: Can P6SMB510A be used as a direct replacement for P6SMB510?

A: Yes. The P6SMB510A maintains the critical electrical parameters: 434V reverse standoff voltage, 900mA peak pulse current, and 600W peak pulse power. Both components use identical DO-214AA (SMB) surface-mount packaging. The reduced clamping voltage (698V vs 732.9V) is within acceptable operating margins for the 434V standoff specification.

Q: What is the difference between P6SMB510A and SMBJP6KE510A-TP?

A: Both parts are electrically equivalent with matching reverse standoff voltage, peak pulse current, and power ratings. The primary differences are manufacturer (Eaton vs Micro Commercial Co), extended operating temperature range for the SMBJP6KE510A-TP (-55°C ~ 175°C vs -55°C ~ 150°C), and inventory availability. Both use DO-214AA (SMB) packaging.

Q: Why is the clamping voltage lower in the substitute parts?

A: The substitute parts (P6SMB510A and SMBJP6KE510A-TP) specify 698V maximum clamping voltage compared to 732.9V for the original P6SMB510. Both values remain within the acceptable operating range for a 434V reverse standoff TVS diode and provide equivalent overvoltage protection performance.

Q: Are the substitute parts RoHS compliant?

A: Yes. P6SMB510A is RoHS Compliant. SMBJP6KE510A-TP is ROHS3 Compliant. Both meet current environmental compliance requirements.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. Both substitute parts are pin-compatible and functionally equivalent for the P6SMB510 in DO-214AA (SMB) surface-mount applications. No circuit modifications are required.

Q: What is the moisture sensitivity level for these parts?

A: All three parts (original and substitutes) have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without special moisture control requirements.