P6SMBJ43A Equivalent & Substitute Parts

Part Overview

The P6SMBJ43A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc. in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 36.8V reverse standoff voltage and 600W peak pulse power rating. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P6SMBJ43A

Littelfuse Inc.In Stock: 30298P6SMBJ43A Datasheet

Current PartRFQ

TPSMB43A

Littelfuse Inc.In Stock: 3334TPSMB43A Datasheet

DirectRFQ

P6SMB43A

Eaton - Electronics DivisionIn Stock: 148264P6SMB43A Datasheet

MFR RecommendedRFQ

SMBJP6KE43A-TP

Micro Commercial CoIn Stock: 1107SMBJP6KE43A-TP Datasheet

DirectRFQ

P6SMB43A

Eaton - Electronics DivisionIn Stock: 148264P6SMB43A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMBJ43A are qualified based on the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 36.8V
• Voltage - Breakdown (Min): 40.9V
• Voltage - Clamping (Max) @ Ipp: 59.3V
• Current - Peak Pulse (10/1000µs): 10.3A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB (surface mount)
• Unidirectional Channels: 1
• Type: Zener

All identified substitute parts maintain identical electrical specifications across these parameters, ensuring functional equivalence in transient voltage suppression applications. Package compatibility is maintained through the DO-214AA (SMB) form factor, allowing direct PCB footprint compatibility.

Parameter Comparison

Engineering Selection Recommendations

TPSMB43A (Littelfuse Inc.) - Active product status with extended operating temperature range (-65°C ~ 175°C). ROHS3 compliant with AEC-Q101 automotive qualification. Available in Tape & Reel packaging with 3,289 units in stock. Recommended for applications requiring automotive-grade reliability and extended temperature performance.

P6SMB43A (Eaton - Electronics Division) - Active product status with RoHS compliance. Highest inventory availability at 148,243 units. Maintains identical electrical specifications with -55°C ~ 150°C operating range. Suitable for telecom applications. Recommended for high-volume procurement and standard industrial applications.

SMBJP6KE43A-TP (Micro Commercial Co) - Active product status with extended operating temperature range (-55°C ~ 175°C). ROHS3 compliant with REACH unaffected status. Available in Tape & Reel packaging with 1,079 units in stock. Suitable for applications requiring extended upper temperature limits.

All three substitute parts maintain full electrical equivalence to the obsolete P6SMBJ43A and are qualified for direct replacement based on identical voltage, current, and power specifications.

Frequently Asked Questions (FAQ)

Q: Can TPSMB43A replace P6SMBJ43A in all applications? A: Yes. TPSMB43A maintains identical electrical specifications (36.8V standoff, 59.3V clamping, 10.3A peak pulse, 600W power) and package compatibility (DO-214AA, SMB). The extended operating temperature range (-65°C ~ 175°C) provides additional margin for temperature-sensitive applications.

Q: What is the difference between P6SMB43A and SMBJP6KE43A-TP? A: Both parts are electrically equivalent with identical voltage and current ratings. P6SMB43A operates from -55°C ~ 150°C, while SMBJP6KE43A-TP extends to -55°C ~ 175°C. P6SMB43A has significantly higher inventory availability (148,243 vs. 1,079 units).

Q: Are all substitute parts available in the same package? A: Yes. All substitute parts use the DO-214AA (SMB) surface mount package, ensuring direct PCB footprint compatibility without layout modifications.

Q: Which substitute part should I select for new designs? A: Selection depends on application requirements. For standard industrial applications, P6SMB43A offers the best availability. For automotive or extended temperature applications, TPSMB43A is recommended. For applications requiring the highest temperature rating, SMBJP6KE43A-TP provides -55°C ~ 175°C operation.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts are RoHS compliant (ROHS3 or RoHS status), meeting environmental and regulatory requirements equivalent to the original P6SMBJ43A.