SMBJ22A-13 Transient Voltage Suppressor (TVS) Diode Equivalent & Substitute Parts

Part Overview

The SMBJ22A-13 is a unidirectional Zener-type transient voltage suppressor manufactured by Diodes Incorporated in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 22V reverse standoff voltage and 35.5V maximum clamping voltage. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

SMBJ22A-13

Diodes IncorporatedIn Stock: 802SMBJ22A-13 Datasheet

Current PartRFQ

SMBJ22A-13-F

Diodes IncorporatedIn Stock: 1388SMBJ22A-13-F Datasheet

DirectRFQ

SMBJ22A

MeritekIn Stock: 2107SMBJ22A Datasheet

DirectRFQ

SMBJ22A

MeritekIn Stock: 2107SMBJ22A Datasheet

DirectRFQ

SMBJ22A

MeritekIn Stock: 2107SMBJ22A Datasheet

DirectRFQ

SMBJ22A-TP

Micro Commercial CoIn Stock: 2875SMBJ22A-TP Datasheet

DirectRFQ

SACB22

Littelfuse Inc.In Stock: 3691SACB22 Datasheet

MFR RecommendedRFQ

SMBJ22A-TR

STMicroelectronicsIn Stock: 5498SMBJ22A-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ22A-13 is determined by strict electrical and mechanical parameter matching within the TVS diode category. The following parameters must align for functional equivalence:

• Voltage - Reverse Standoff (Typ): 22V
• Voltage - Breakdown (Min): 24.4V
• Voltage - Clamping (Max) @ Ipp: 35.5V (or within acceptable tolerance)
• Current - Peak Pulse (10/1000µs): 16.9A (or higher rating acceptable)
• Power - Peak Pulse: 600W (or higher rating acceptable)
• Package / Case: DO-214AA, SMB (surface mount compatibility)
• Operating Temperature Range: -55°C ~ 150°C minimum
• Type: Zener, Unidirectional

Substitute parts are grouped into two categories: direct electrical equivalents from alternative manufacturers and functionally compatible alternatives with minor parameter variations within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Direct Replacement): SMBJ22A-13-F (Diodes Incorporated)

This part is the direct equivalent from the original manufacturer with identical electrical specifications. It maintains the same voltage ratings, current handling, and power dissipation as the discontinued SMBJ22A-13. The primary advantage is ROHS3 compliance, addressing regulatory requirements for new designs. This is the recommended choice for direct substitution in existing applications.

Secondary Substitutes (Functionally Compatible):

SMBJ22A-TP (Micro Commercial Co) and SMBJ22A-TR (STMicroelectronics) provide full electrical equivalence with identical voltage and power ratings. SMBJ22A-TP offers an extended operating temperature range to -55°C ~ 175°C, providing additional thermal margin. Both are ROHS3 compliant and actively produced.

SMBJ22A (Meritek) matches all critical electrical parameters and is ROHS3 compliant. This option provides cost-effective substitution with equivalent performance.

Alternative with Reduced Ratings: SACB22 (Littelfuse Inc.)

This part maintains the same voltage specifications but operates at reduced peak pulse current (14A versus 16.9A) and lower peak pulse power (500W versus 600W). SACB22 is suitable only for applications where the lower current and power ratings are acceptable. This part is ROHS3 compliant and actively produced.

All substitute options are available in the DO-214AA (SMB) surface mount package, ensuring mechanical compatibility with existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can SMBJ22A-13-F be used as a direct replacement for SMBJ22A-13?

A: Yes. SMBJ22A-13-F is electrically and mechanically identical to SMBJ22A-13, with the same voltage ratings (22V standoff, 35.5V clamping), current handling (16.9A peak pulse), and power dissipation (600W). The primary difference is ROHS3 compliance status and active production status. Both use the DO-214AA (SMB) package.

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

A: Both parts are electrically equivalent with identical voltage and current ratings. The designation difference reflects packaging format: TP indicates Tape & Reel packaging from Micro Commercial Co, while TR indicates Tape & Reel packaging from STMicroelectronics. SMBJ22A-TP offers an extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 150°C).

Q: Is SACB22 a suitable substitute for SMBJ22A-13?

A: SACB22 maintains voltage compatibility (22V standoff, 35.4V clamping) but operates at reduced peak pulse current (14A versus 16.9A) and lower peak pulse power (500W versus 600W). Substitution is acceptable only if the application does not require the full current and power ratings of the original part. Verify circuit requirements before selection.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts (SMBJ22A-13-F, SMBJ22A, SMBJ22A-TP, SMBJ22A-TR, and SACB22) are ROHS3 compliant. The original SMBJ22A-13 is RoHS non-compliant. For new designs or applications requiring regulatory compliance, any of the active substitute options are suitable.

Q: Do all substitutes use the same package?

A: Yes. All substitute parts use the DO-214AA (SMB) surface mount package, ensuring direct mechanical compatibility with PCB layouts designed for SMBJ22A-13. No board redesign is required for package accommodation.

Q: What is the inventory status of substitute parts?

A: SMBJ22A-13-F (1,350 pcs), SMBJ22A (2,062 pcs), SMBJ22A-TP (2,823 pcs), SACB22 (3,654 pcs), and SMBJ22A-TR (5,402 pcs) are all available in stock as new original components.