P6SMB22C Equivalent & Substitute Parts

Part Overview

The P6SMB22C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. Housed in the DO-214AA (SMB) package, this component provides 600W peak pulse power dissipation with a 32.13V maximum clamping voltage. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

P6SMB22C

Littelfuse Inc.In Stock: 759P6SMB22C Datasheet

Current PartRFQ

P6SMB22CA

Good-Ark SemiconductorIn Stock: 20143P6SMB22CA Datasheet

DirectRFQ

P6SMB22CA

Good-Ark SemiconductorIn Stock: 20143P6SMB22CA Datasheet

DirectRFQ

SM6T22CA

STMicroelectronicsIn Stock: 9914SM6T22CA Datasheet

MFR RecommendedRFQ

SM6T22CAY

STMicroelectronicsIn Stock: 3342SM6T22CAY Datasheet

MFR RecommendedRFQ

SMBJP6KE22CA-TP

Micro Commercial CoIn Stock: 50367SMBJP6KE22CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB22C is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 18.8V
• Voltage - Breakdown (Min): 19.8V or higher
• Voltage - Clamping (Max) @ Ipp: 30.6V to 32.13V range
• Current - Peak Pulse (10/1000µs): 19.6A to 19.9A
• Power - Peak Pulse: 600W

Mechanical & Environmental Parameters:

• Bidirectional Channels: 1
• Mounting Type: Surface Mount
• Package / Case: DO-214AA, SMB
• Operating Temperature Range: -55°C minimum to 150°C or higher
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1

All substitute parts listed maintain these electrical and mechanical specifications within acceptable tolerances for direct replacement in the P6SMB22C application circuit.

Parameter Comparison

Engineering Selection Recommendations

P6SMB22CA (Good-Ark Semiconductor): Active product status with identical reverse standoff voltage and equivalent clamping performance. Suitable for direct replacement in standard applications requiring 600W peak pulse protection.

SM6T22CA (STMicroelectronics): Active product with TRANSIL™ series designation. Maintains electrical specifications with higher peak pulse current rating (102A at 8/20µs pulse). Appropriate for applications requiring enhanced transient suppression capability.

SM6T22CAY (STMicroelectronics): Active product with automotive-grade qualification (AEC-Q101) and TRANSIL™ series designation. Identical electrical specifications to SM6T22CA. Required for automotive applications or designs subject to AEC-Q101 compliance mandates.

SMBJP6KE22CA-TP (Micro Commercial Co): Active product with extended operating temperature range (-55°C to 175°C). Maintains electrical specifications matching the original P6SMB22C. Suitable for applications requiring higher temperature operation or tape & reel packaging format.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can P6SMB22CA replace P6SMB22C directly? A: Yes. Both parts share identical reverse standoff voltage (18.8V), equivalent clamping voltage (30.6V vs 32.13V), and matching peak pulse power (600W). The P6SMB22CA is an active product from Good-Ark Semiconductor suitable for direct substitution.

Q: What is the difference between SM6T22CA and SM6T22CAY? A: SM6T22CAY includes automotive-grade qualification (AEC-Q101) and is designated for automotive applications. Electrical specifications are identical. Select SM6T22CAY only if AEC-Q101 compliance is required.

Q: Why does SM6T22CA show 102A peak pulse current instead of 19.9A? A: The SM6T22CA peak pulse current is specified under different test conditions (8/20µs pulse) compared to the P6SMB22C specification (10/1000µs pulse). Both parts deliver 600W peak pulse power and are electrically equivalent for the application.

Q: Is SMBJP6KE22CA-TP compatible with standard PCB layouts designed for P6SMB22C? A: Yes. SMBJP6KE22CA-TP uses the same DO-214AA (SMB) package footprint as P6SMB22C. The extended temperature range (-55°C to 175°C) provides additional operational margin without affecting mechanical compatibility.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 rating, meeting standard environmental and manufacturing requirements.

Q: Which substitute part offers the best availability? A: SMBJP6KE22CA-TP shows the highest inventory level (50,300 pcs) among active substitutes, followed by P6SMB22CA (20,100 pcs). Both are suitable for procurement planning.