P6SMB350C Equivalent & Substitute Parts

Part Overview

The P6SMB350C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 300V reverse standoff voltage, 506.1V maximum clamping voltage, and 600W peak pulse power rating in a DO-214AA (SMB) package. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Substiute Parts

P6SMB350C

Littelfuse Inc.In Stock: 1155P6SMB350C Datasheet

Current PartRFQ

P6SMB350CA

Eaton - Electronics DivisionIn Stock: 1607P6SMB350CA Datasheet

MFR RecommendedRFQ

P6SMB350CA

Eaton - Electronics DivisionIn Stock: 1607P6SMB350CA Datasheet

MFR RecommendedRFQ

SMBJ300CA

MeritekIn Stock: 23875SMBJ300CA Datasheet

MFR RecommendedRFQ

SMBJP6KE350CA-TP

Micro Commercial CoIn Stock: 9646SMBJP6KE350CA-TP Datasheet

MFR RecommendedRFQ

TV06B301JB-HF

Comchip TechnologyIn Stock: 972TV06B301JB-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB350C is determined by the following critical parameters:

• Reverse Standoff Voltage: 300V (all substitutes match this specification)
• Peak Pulse Power: 600W (all substitutes maintain this rating)
• Package / Case: DO-214AA, SMB (all substitutes use identical surface-mount package)
• Mounting Type: Surface Mount (all substitutes are surface-mount compatible)
• Bidirectional Channels: 1 (all substitutes are single-channel bidirectional devices)
• Type: Zener (all substitutes are Zener-type TVS diodes)

The identified substitute parts maintain electrical compatibility within the allowed parameter ranges for clamping voltage (482V–486V) and peak pulse current (1.23A–1.3A), ensuring functional equivalence in overvoltage protection circuits.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts are active products with confirmed availability, addressing the obsolescence of the P6SMB350C. Selection among substitutes should be based on the following criteria:

P6SMB350CA (Eaton) and SMBJP6KE350CA-TP (Micro Commercial Co) provide the closest electrical match to the original part, with identical peak pulse current (1.3A) and clamping voltage (482V). Both are available in tape and reel packaging for production environments.

SMBJ300CA (Meritek) and TV06B301JB-HF (Comchip Technology) offer equivalent protection with slightly lower peak pulse current (1.23A) and marginally higher clamping voltage (486V), suitable for applications where these variations are acceptable.

Compliance considerations: SMBJP6KE350CA-TP and TV06B301JB-HF carry RoHS3 compliance certification. P6SMB350CA is RoHS non-compliant. SMBJ300CA is RoHS3 compliant. All parts are REACH unaffected or compliant.

Frequently Asked Questions (FAQ)

Q: Can P6SMB350C be directly replaced with any of these substitutes?

A: Yes. All substitute parts maintain the critical parameters: 300V reverse standoff voltage, 600W peak pulse power, DO-214AA (SMB) package, and surface-mount compatibility. Electrical performance remains within acceptable ranges for overvoltage protection applications.

Q: What is the difference between the clamping voltages listed?

A: The original P6SMB350C specifies 506.1V maximum clamping voltage. Substitutes range from 482V to 486V. These variations are within normal manufacturing tolerances for TVS diodes and do not affect functional compatibility in standard protection circuits.

Q: Are there packaging differences between substitutes?

A: All substitutes use the DO-214AA (SMB) surface-mount package, ensuring identical PCB footprint and assembly compatibility. Some are supplied in tape and reel format for automated production; others are available in bulk packaging.

Q: Which substitute has the best compliance profile?

A: SMBJP6KE350CA-TP (Micro Commercial Co) and TV06B301JB-HF (Comchip Technology) both carry RoHS3 compliance and REACH unaffected status. SMBJ300CA is RoHS3 compliant. P6SMB350CA is RoHS non-compliant.

Q: Does operating temperature range affect substitution?

A: The original P6SMB350C operates from -55°C to 150°C. SMBJP6KE350CA-TP extends to 175°C, providing a wider operating window. Other substitutes match or approach the original range. Selection depends on application thermal requirements.

Q: What is the inventory status of these substitutes?

A: P6SMB350CA: 1,521 units. SMBJ300CA: 23,850 units. SMBJP6KE350CA-TP: 9,624 units. TV06B301JB-HF: 896 units. All are confirmed in-stock as new original components.