SMBJ20A-TP Equivalent & Substitute Parts

Part Overview

The SMBJ20A-TP is an active-status Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose transient protection applications. This unidirectional zener diode operates with a 20V reverse standoff voltage and provides 600W peak pulse power dissipation in a surface-mount DO-214AA (SMB) package. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and compliance certifications to ensure direct interchangeability in circuit designs.

Substiute Parts

SMBJ20A-TP

Micro Commercial CoIn Stock: 3850SMBJ20A-TP Datasheet

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1SMB20A TR13 PBFREE

Central Semiconductor CorpIn Stock: 9881SMB20A TR13 PBFREE Datasheet

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SMBJ20A

Good-Ark SemiconductorIn Stock: 38643SMBJ20A Datasheet

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SMBJ20A

Good-Ark SemiconductorIn Stock: 38643SMBJ20A Datasheet

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SMBJ20A

Good-Ark SemiconductorIn Stock: 38643SMBJ20A Datasheet

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SMBJ20A-13-F

Diodes IncorporatedIn Stock: 35279SMBJ20A-13-F Datasheet

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SMBJ20A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 6166SMBJ20A-E3/52 Datasheet

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SMBJ20A-TR

STMicroelectronicsIn Stock: 2880SMBJ20A-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for SMBJ20A-TP are classified based on strict electrical and mechanical parameter matching:

Direct Electrical Equivalents: Parts with identical voltage ratings (20V reverse standoff, 22.2V breakdown minimum, 32.4V clamping maximum), peak pulse current of 18.5A, and 600W peak pulse power are considered direct substitutes. All substitute parts listed maintain these core electrical specifications.

Package Compatibility: All substitute parts use the DO-214AA (SMB) surface-mount package, ensuring mechanical and footprint compatibility.

Key Substitution Parameters:

• Voltage - Reverse Standoff: 20V (required match)
• Voltage - Breakdown (Min): 22.2V (required match)
• Voltage - Clamping (Max) @ Ipp: 32.4V (required match)
• Current - Peak Pulse (10/1000µs): 18.5A nominal (18.5A–19.4A acceptable range)
• Power - Peak Pulse: 600W (required match)
• Package / Case: DO-214AA, SMB (required match)
• Type: Zener, Unidirectional (required match)

Operating Temperature Consideration: The main part operates from -55°C to 175°C. One substitute (1SMB20A TR13 PBFREE) operates from -65°C to 150°C, representing a narrower upper temperature limit. This difference is noted for applications requiring the full -55°C to 175°C range.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, meeting regulatory requirements for new designs and production environments. Selection among equivalent parts should be based on:

Inventory Availability: Good-Ark Semiconductor SMBJ20A offers the highest inventory level (38,610 pcs), providing supply chain reliability. Diodes Incorporated SMBJ20A-13-F (35,200 pcs) and Vishay SMBJ20A-E3/52 (6,156 pcs) represent secondary and tertiary sourcing options.

Temperature Range Alignment: For applications requiring operation across the full -55°C to 175°C range, select from SMBJ20A-TP (Micro Commercial Co) or SMBJ20A (Good-Ark Semiconductor). The 1SMB20A TR13 PBFREE from Central Semiconductor Corp operates to 150°C maximum and is suitable only for applications with upper temperature limits at or below 150°C.

Peak Pulse Current: SMBJ20A-TR from STMicroelectronics specifies 19.4A peak pulse current, which exceeds the 18.5A nominal specification. This part remains electrically compatible within the defined voltage and power parameters.

Packaging Format: All parts are available in Tape & Reel (TR) or Cut Tape (CT) formats suitable for automated assembly. Packaging selection should align with production equipment and volume requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ20A-TP be directly replaced with SMBJ20A from Good-Ark Semiconductor?

A: Yes. Both parts share identical electrical specifications (20V standoff, 22.2V breakdown, 32.4V clamping, 18.5A peak pulse, 600W power) and DO-214AA SMB packaging. The primary difference is operating temperature range: SMBJ20A-TP operates to 175°C while SMBJ20A operates to 150°C. For applications within -55°C to 150°C, direct substitution is valid.

Q: Is SMBJ20A-TR from STMicroelectronics compatible with SMBJ20A-TP?

A: Yes. SMBJ20A-TR maintains all critical electrical parameters and package compatibility. The 19.4A peak pulse current specification exceeds the 18.5A nominal value, providing equivalent or superior transient suppression performance within the same voltage and power envelope.

Q: What is the significance of the temperature range difference between SMBJ20A-TP (-55°C to 175°C) and 1SMB20A TR13 PBFREE (-65°C to 150°C)?

A: The main part supports higher maximum junction temperature (175°C vs. 150°C), making it suitable for high-temperature applications. The Central Semiconductor part extends the lower temperature limit to -65°C. Selection depends on application temperature requirements. For designs requiring operation above 150°C, use SMBJ20A-TP or SMBJ20A (Good-Ark).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity rating, meeting regulatory requirements for commercial and industrial applications.

Q: Can packaging format (Tape & Reel vs. Cut Tape) affect substitution?

A: Packaging format does not affect electrical or mechanical compatibility. Selection between Tape & Reel and Cut Tape should be based on production volume, assembly equipment capability, and inventory management practices. All parts use identical DO-214AA SMB package geometry.

Q: What inventory considerations apply when selecting a substitute?

A: Good-Ark Semiconductor SMBJ20A (38,610 pcs) offers the highest stock level for immediate availability. Diodes Incorporated SMBJ20A-13-F (35,200 pcs) provides a secondary sourcing option. For critical supply chain requirements, confirm current inventory status with component distributors before design finalization.