SMBJ22A-TP Equivalent & Substitute Parts

Part Overview

The SMBJ22A-TP is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. The device features a 22V reverse standoff voltage with 35.5V maximum clamping voltage and 16.9A peak pulse current capability in a DO-214AA (SMB) package. Product status is Active with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when electrical parameters and mechanical compatibility remain within specified tolerances across alternative manufacturers.

Substiute Parts

SMBJ22A-TP

Micro Commercial CoIn Stock: 2875SMBJ22A-TP Datasheet

Current PartRFQ

SMBJ22A

MeritekIn Stock: 2107SMBJ22A Datasheet

DirectRFQ

SMBJ22A

MeritekIn Stock: 2107SMBJ22A Datasheet

DirectRFQ

SMBJ22A

MeritekIn Stock: 2107SMBJ22A Datasheet

DirectRFQ

SMBJ22A-13-F

Diodes IncorporatedIn Stock: 1388SMBJ22A-13-F Datasheet

DirectRFQ

SMBJ22A-TR

STMicroelectronicsIn Stock: 5498SMBJ22A-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for SMBJ22A-TP are classified based on electrical parameter equivalence and mechanical compatibility. The critical parameters determining substitution eligibility are:

• Voltage - Reverse Standoff: 22V (nominal)
• Voltage - Breakdown (Min): 24.4V
• Voltage - Clamping (Max) @ Ipp: 35.5V
• Current - Peak Pulse (10/1000µs): 16.9A minimum
• Package / Case: DO-214AA (SMB) surface mount
• Type: Zener, Unidirectional
• RoHS3 Compliance: Required

Direct Substitutes maintain all electrical parameters within specification and identical package configuration. Similar Substitutes meet electrical requirements with minor parameter variations (peak pulse current ≥16.9A) while maintaining functional equivalence in general-purpose protection applications.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and full RoHS3 compliance with unlimited moisture sensitivity rating (MSL 1), meeting regulatory and environmental requirements equivalent to the original SMBJ22A-TP.

SMBJ22A (Meritek): Direct electrical equivalent with identical peak pulse current (16.9A). Operating temperature range is -55°C ~ 150°C, which is 25°C lower than the original part's maximum junction temperature. Selection is appropriate for applications operating within -55°C ~ 150°C thermal envelope.

SMBJ22A-13-F (Diodes Incorporated): Direct electrical equivalent with identical peak pulse current (16.9A) and operating temperature range -55°C ~ 150°C. Supplied in Cut Tape (CT) & Digi-Reel® packaging, suitable for applications requiring alternative tape formats.

SMBJ22A-TR (STMicroelectronics): Similar electrical performance with peak pulse current of 17.7A, exceeding the minimum 16.9A requirement. Operating temperature range is -55°C ~ 150°C. Supplied in Tape & Reel (TR) format matching the original packaging type. The higher peak pulse current provides additional transient protection margin.

Frequently Asked Questions (FAQ)

Q: Can SMBJ22A (Meritek) be used as a direct replacement for SMBJ22A-TP?

A: Yes. Both parts share identical electrical specifications (22V standoff, 24.4V breakdown, 35.5V clamping, 16.9A peak pulse current) and DO-214AA (SMB) package configuration. The operating temperature range difference (-55°C ~ 150°C vs. -55°C ~ 175°C) is not a substitution barrier for applications within the lower temperature envelope.

Q: What is the difference between SMBJ22A-13-F and SMBJ22A-TR?

A: Both parts are electrically equivalent to SMBJ22A-TP with identical clamping voltage and peak pulse current specifications. The primary differences are packaging format (Cut Tape & Digi-Reel® vs. Tape & Reel) and manufacturer (Diodes Incorporated vs. STMicroelectronics). SMBJ22A-TR provides 17.7A peak pulse current, offering additional transient protection margin compared to the 16.9A specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant certification with REACH Unaffected status, matching the regulatory compliance of the original SMBJ22A-TP.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging formats do not affect electrical performance. Selection between packaging types is based on assembly process requirements and inventory management practices.

Q: What is the significance of the higher peak pulse current (17.7A) in SMBJ22A-TR?

A: The SMBJ22A-TR specification of 17.7A peak pulse current exceeds the 16.9A minimum requirement, providing additional transient energy absorption capability. This represents a performance enhancement suitable for applications requiring higher transient protection margins while maintaining identical voltage clamping characteristics.