SMBJ20CA-TP Equivalent & Substitute Parts

Part Overview

The SMBJ20CA-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 20V reverse standoff voltage and provides 32.4V maximum clamping voltage at peak pulse current. The component is actively produced, RoHS3 compliant, and available in high inventory quantities. Substitute parts are identified when electrical parameters and mechanical compatibility align with the original specification, enabling direct replacement in circuit designs without performance degradation.

Substiute Parts

SMBJ20CA-TP

Micro Commercial CoIn Stock: 3518SMBJ20CA-TP Datasheet

Current PartRFQ

1SMB20CA TR13 PBFREE

Central Semiconductor CorpIn Stock: 29231SMB20CA TR13 PBFREE Datasheet

DirectRFQ

SMBJ20CA

Fairchild SemiconductorIn Stock: 26343SMBJ20CA Datasheet

DirectRFQ

SMBJ20CA

Fairchild SemiconductorIn Stock: 26343SMBJ20CA Datasheet

DirectRFQ

SMBJ20CA

Fairchild SemiconductorIn Stock: 26343SMBJ20CA Datasheet

DirectRFQ

SMBJ20CA-13-F

Diodes IncorporatedIn Stock: 65277SMBJ20CA-13-F Datasheet

DirectRFQ

SMBJ20CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 45269SMBJ20CA-E3/52 Datasheet

DirectRFQ

SMBJ20CA-TR

STMicroelectronicsIn Stock: 6724SMBJ20CA-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ20CA-TP are classified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Critical Parameters for Substitution:

• Voltage - Reverse Standoff: 20V (exact match required)
• Voltage - Breakdown (Min): 22.2V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 32.4V (exact match required)
• Current - Peak Pulse (10/1000µs): 18.5A minimum (18.6A and 19.4A acceptable within tolerance)
• Power - Peak Pulse: 600W (exact match required)
• Package / Case: DO-214AA, SMB (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Type: Zener, Bidirectional (exact match required)

Direct Substitutes maintain all critical electrical parameters and package specifications. Similar Substitutes meet all critical parameters with minor variations in peak pulse current within acceptable engineering tolerance.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and meet the core electrical specifications of the SMBJ20CA-TP. Selection among substitutes should be based on the following factors:

Direct Electrical Equivalents: SMBJ20CA-13-F (Diodes Incorporated), SMBJ20CA-E3/52 (Vishay), and 1SMB20CA TR13 PBFREE (Central Semiconductor) provide exact parameter matching with 18.5A peak pulse current and are RoHS3 compliant.

Tolerance-Based Equivalents: SMBJ20CA (Fairchild Semiconductor) and SMBJ20CA-TR (STMicroelectronics) deliver equivalent performance with peak pulse currents of 18.6A and 19.4A respectively, both within acceptable engineering tolerance for the 600W power rating and 32.4V clamping specification.

Temperature Consideration: The 1SMB20CA TR13 PBFREE variant supports an extended lower operating temperature limit (-65°C vs. -55°C), providing broader thermal range coverage if required by application constraints.

Compliance Verification: All substitute parts except Fairchild SMBJ20CA carry explicit RoHS3 compliance certification. Packaging format availability varies; Tape & Reel (TR) is standard across most substitutes, with STMicroelectronics offering Cut Tape (CT) and Digi-Reel® options.

Frequently Asked Questions (FAQ)

Q: Can SMBJ20CA-TR from STMicroelectronics replace SMBJ20CA-TP directly?

A: Yes. The SMBJ20CA-TR maintains all critical electrical parameters (20V standoff, 22.2V breakdown minimum, 32.4V clamping maximum, 600W peak power) and DO-214AA SMB package specification. The peak pulse current of 19.4A exceeds the 18.5A requirement, providing additional margin within the 600W power envelope.

Q: What is the difference between SMBJ20CA-E3/52 and SMBJ20CA-13-F?

A: Both parts are direct electrical equivalents with identical voltage ratings (20V standoff, 22.2V breakdown, 32.4V clamping) and 18.5A peak pulse current. The primary difference is manufacturer: Vishay General Semiconductor (SMBJ20CA-E3/52) versus Diodes Incorporated (SMBJ20CA-13-F). Both are RoHS3 compliant and available in Tape & Reel packaging.

Q: Does the 1SMB20CA TR13 PBFREE variant offer any advantage over other substitutes?

A: The 1SMB20CA TR13 PBFREE from Central Semiconductor extends the lower operating temperature limit to -65°C compared to -55°C for most alternatives. This provides thermal margin for applications operating in extreme cold environments. All other electrical parameters remain equivalent.

Q: Are there packaging format differences among substitute parts?

A: Most substitutes are supplied in Tape & Reel (TR) format. STMicroelectronics SMBJ20CA-TR offers additional Cut Tape (CT) and Digi-Reel® packaging options. All parts use the DO-214AA SMB surface-mount package, ensuring mechanical compatibility on PCB layouts.

Q: Can I use SMBJ20CA (Fairchild) if RoHS3 compliance is not explicitly stated?

A: The Fairchild SMBJ20CA meets all electrical specifications and maintains active product status. However, explicit RoHS3 compliance certification is not provided in the available data. Verification with the manufacturer is recommended if RoHS3 compliance is a design requirement.

Q: What determines whether a part is a direct substitute versus a similar substitute?

A: Direct substitutes maintain exact parameter matching across all critical specifications. Similar substitutes meet all critical parameters with minor variations in peak pulse current (18.6A or 19.4A versus 18.5A) that remain within acceptable tolerance for the 600W power rating and 32.4V clamping voltage specification.