P6SMB120C Equivalent & Substitute Parts

Part Overview

The P6SMB120C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This component features a 102V reverse standoff voltage with a 173.25V maximum clamping voltage and 3.7A peak pulse current capability in a surface-mount DO-214AA (SMB) package. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement.

Substiute Parts

P6SMB120C

Littelfuse Inc.In Stock: 1035P6SMB120C Datasheet

Current PartRFQ

P6SMB120CA

Eaton - Electronics DivisionIn Stock: 56516P6SMB120CA Datasheet

MFR RecommendedRFQ

P6SMB120CA

Eaton - Electronics DivisionIn Stock: 56516P6SMB120CA Datasheet

MFR RecommendedRFQ

TVP06B121CA-G

Comchip TechnologyIn Stock: 746TVP06B121CA-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB120C is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 102V
• Voltage - Breakdown (Min): 108V minimum
• Current - Peak Pulse (10/1000µs): 3.7A minimum
• Power - Peak Pulse: 600W
• Operating Temperature Range: -55°C ~ 150°C (TJ)

Mechanical Compatibility Criteria:

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Bidirectional Channels: 1

Substitute parts must maintain identical reverse standoff voltage, support equivalent or greater peak pulse current, and be housed in the same surface-mount package. The P6SMB120C is grouped with two active substitute components that meet these requirements while offering improved product availability and active manufacturing status.

Parameter Comparison

Engineering Selection Recommendations

P6SMB120CA (Eaton - Electronics Division): This component is the manufacturer-recommended substitute with active product status. It maintains the identical 102V reverse standoff voltage and 3.7A peak pulse current specification. The clamping voltage is reduced to 165V, representing improved performance characteristics. The part is RoHS compliant and available in high inventory quantities (56,450 pcs), supporting both current and future procurement requirements.

TVP06B121CA-G (Comchip Technology): This alternative substitute also maintains the 102V reverse standoff voltage with equivalent 600W peak pulse power rating. The peak pulse current is specified at 3.64A, meeting the minimum requirement. The component is ROHS3 compliant with REACH unaffected status. Inventory availability is lower (668 pcs) compared to the Eaton option.

Both substitute parts are actively manufactured, fully compliant with environmental regulations, and compatible with existing PCB layouts designed for the P6SMB120C.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB120CA directly replace the P6SMB120C in existing designs?

A: Yes. Both components share identical reverse standoff voltage (102V), peak pulse current (3.7A), power rating (600W), operating temperature range (-55°C to 150°C), and surface-mount DO-214AA package. The P6SMB120CA exhibits a lower clamping voltage (165V vs. 173.25V), which represents improved voltage suppression performance.

Q: What is the difference between the P6SMB120CA and TVP06B121CA-G?

A: Both parts maintain the same 102V reverse standoff voltage and 600W power rating. The primary difference is peak pulse current specification: P6SMB120CA is rated at 3.7A while TVP06B121CA-G is rated at 3.64A. Both are surface-mount DO-214AA packages with identical operating temperature ranges. The P6SMB120CA has significantly higher inventory availability.

Q: Are there any package or mounting differences between these substitutes?

A: No. All three components use the DO-214AA (SMB) surface-mount package with identical mechanical dimensions and PCB footprints. No layout modifications are required when substituting between these parts.

Q: Which substitute should be selected for new designs?

A: The P6SMB120CA is recommended for new designs due to active manufacturing status, high inventory availability, and manufacturer recommendation. The TVP06B121CA-G is a viable alternative when supply constraints exist.

Q: Are these parts RoHS compliant?

A: Yes. The P6SMB120CA is RoHS compliant. The TVP06B121CA-G is ROHS3 compliant with REACH unaffected status. Both meet current environmental regulations.