SMBJ22CA-13 Equivalent & Substitute Parts

Part Overview

The SMBJ22CA-13 is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 22V reverse standoff voltage and provides 35.5V maximum clamping voltage at peak pulse current. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers and product lines.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	22	V
Voltage - Breakdown (Min)	24.4	V
Voltage - Clamping (Max) @ Ipp	35.5	V
Current - Peak Pulse (10/1000µs)	16.9	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Bidirectional Channels	1	—
Type	Zener	—

Substitute Part Grouping Explanation

Substitution of the SMBJ22CA-13 is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 22V
Voltage - Breakdown (Min): 24.4V
Voltage - Clamping (Max) @ Ipp: 35.5V
Current - Peak Pulse (10/1000µs): 16.9A minimum
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener

Substitute parts must maintain all electrical specifications within the stated tolerances and use the identical SMB (DO-214AA) package for direct board-level compatibility. Variations in peak pulse current above 16.9A, operating temperature range, or RoHS compliance status do not disqualify a part from substitution, provided all primary electrical parameters remain matched.

Parameter Comparison

Part Number	Manufacturer	VRM (Typ) [V]	VBR (Min) [V]	VC (Max) @ Ipp [V]	Ipp (10/1000µs) [A]	PPP [W]	Temp Range [°C]	Package	Product Status
SMBJ22CA-13	Diodes Incorporated	22	24.4	35.5	16.9	600	-55 to 150	DO-214AA, SMB	Discontinued
SMBJ22CA-13-F	Diodes Incorporated	22	24.4	35.5	16.9	600	-55 to 150	DO-214AA, SMB	Active
SMBJ22CA-TR	STMicroelectronics	22	24.4	35.5	17.7	600	-55 to 150	DO-214AA, SMB	Active
SMBJ22CA-TP	Micro Commercial Co	22	24.4	35.5	16.9	600	-55 to 175	DO-214AA, SMB	Active
SMBJ22CA	MDD	22	24.4	35.5	16.9	600	-50 to 150	DO-214AA, SMB	Active

Engineering Selection Recommendations

All listed substitute parts maintain electrical equivalence to the SMBJ22CA-13 across critical voltage and current parameters. Selection among active alternatives should prioritize product status and compliance certifications:

SMBJ22CA-13-F (Diodes Incorporated) provides direct manufacturer continuity with identical specifications and ROHS3 compliance, making it the primary replacement for the discontinued SMBJ22CA-13.

SMBJ22CA-TR (STMicroelectronics) offers active product status with marginally higher peak pulse current (17.7A versus 16.9A), providing enhanced transient protection capability while maintaining all other electrical parameters. ROHS3 compliance is confirmed.

SMBJ22CA-TP (Micro Commercial Co) delivers identical electrical performance with an extended operating temperature range (-55 to 175°C) and ROHS3 compliance, suitable for applications requiring elevated temperature operation.

SMBJ22CA (MDD) provides the highest inventory availability (25,400 pcs) with ROHS3 compliance. Operating temperature range is -50 to 150°C, representing a 5°C reduction at the lower bound compared to the original part.

All substitute parts are packaged in DO-214AA (SMB) and are surface-mount compatible with the original design.

Frequently Asked Questions (FAQ)

Q: Can SMBJ22CA-13-F be used as a direct replacement for SMBJ22CA-13?

A: Yes. SMBJ22CA-13-F is manufactured by Diodes Incorporated and maintains identical electrical specifications (22V standoff, 24.4V breakdown, 35.5V clamping, 16.9A peak pulse current, 600W peak power) and package format (DO-214AA, SMB). The primary difference is product status: SMBJ22CA-13-F is active while SMBJ22CA-13 is discontinued.

Q: What is the difference between SMBJ22CA-TR and SMBJ22CA-13?

A: SMBJ22CA-TR is manufactured by STMicroelectronics and matches all critical electrical parameters except peak pulse current, which is specified at 17.7A compared to 16.9A in the original part. This represents a 4.7% increase in transient current handling capability. Both operate across -55 to 150°C and use the DO-214AA (SMB) package.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts carry ROHS3 compliance certification. The original SMBJ22CA-13 is marked as RoHS non-compliant.

Q: Does operating temperature range affect substitution compatibility?

A: Operating temperature range does not disqualify substitution if the application operates within the substitute part's specified range. SMBJ22CA-TP extends to 175°C (versus 150°C for the original), while SMBJ22CA (MDD) operates from -50°C (versus -55°C for the original). Verify application requirements before selection.

Q: Can I use SMBJ22CA (MDD) if my application requires -55°C operation?

A: No. SMBJ22CA (MDD) is specified for -50 to 150°C operation. If your application requires -55°C minimum temperature, select SMBJ22CA-13-F, SMBJ22CA-TR, or SMBJ22CA-TP, all of which support -55°C operation.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts use DO-214AA (SMB) surface-mount package, ensuring direct board-level compatibility without layout modifications.

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