SMBJ11CA-13 Equivalent & Substitute Parts

Part Overview

The SMBJ11CA-13 is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This component features an 11V reverse standoff voltage with an 18.2V maximum clamping voltage and 33A peak pulse current capability in the SMB (DO-214AA) package. The main part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines that maintain identical electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Type	Zener TVS Diode	—
Voltage - Reverse Standoff (Typ)	11	V
Voltage - Breakdown (Min)	12.2	V
Voltage - Clamping (Max) @ Ipp	18.2	V
Current - Peak Pulse (10/1000µs)	33	A
Power - Peak Pulse	600	W
Bidirectional Channels	1	—
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ11CA-13 is determined by strict equivalence across the following critical parameters:

Voltage - Reverse Standoff (Typ): 11V
Voltage - Breakdown (Min): 12.2V
Voltage - Clamping (Max) @ Ipp: 18.2V
Current - Peak Pulse (10/1000µs): 33A
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1

All identified substitute parts maintain these electrical and mechanical specifications. Variations in packaging format (Bulk, Tape & Reel), manufacturer, and product status do not affect functional equivalence in circuit applications where these parameters are met.

Parameter Comparison

Part Number	Manufacturer	Vwm (Typ)	Vbr (Min)	Vc (Max)	Ipp	Ppk	Package	Temp Range	Product Status	Packaging Format
SMBJ11CA-13	Diodes Incorporated	11V	12.2V	18.2V	33A	600W	DO-214AA, SMB	-55 to 150°C	Discontinued	—
SMBJ11CA-13-F	Diodes Incorporated	11V	12.2V	18.2V	33A	600W	DO-214AA, SMB	-55 to 150°C	Active	Tape & Reel (TR)
SMBJ11CA	Fairchild Semiconductor	11V	12.2V	18.2V	33A	600W	DO-214AA, SMB	-55 to 150°C	Active	Bulk
SMBJ11CA-E3/52	Vishay General Semiconductor - Diodes Division	11V	12.2V	18.2V	33A	600W	DO-214AA, SMB	-55 to 150°C	Active	Tape & Reel (TR)
SMBJ11CA-TP	Micro Commercial Co	11V	12.2V	18.2V	33A	600W	DO-214AA, SMB	-55 to 175°C	Active	Tape & Reel (TR)

Engineering Selection Recommendations

All identified substitute parts maintain complete electrical and mechanical equivalence to the SMBJ11CA-13. Selection among these alternatives should be based on the following factors:

Product Status: SMBJ11CA-13-F, SMBJ11CA, SMBJ11CA-E3/52, and SMBJ11CA-TP are all active products with confirmed inventory availability, whereas the original SMBJ11CA-13 is discontinued.

Compliance & Certifications: SMBJ11CA-13-F, SMBJ11CA-E3/52, and SMBJ11CA-TP carry RoHS3 compliance certification. The Fairchild SMBJ11CA (Bulk packaging) does not list explicit RoHS status in the provided data. The original SMBJ11CA-13 is RoHS non-compliant.

Packaging Format: Tape & Reel (TR) packaging is suitable for automated assembly processes. Bulk packaging is appropriate for manual assembly or lower-volume applications. Selection depends on production methodology and volume requirements.

Operating Temperature: SMBJ11CA-TP supports an extended upper temperature limit of 175°C versus 150°C for all other variants. This provides additional thermal margin in high-temperature environments.

Manufacturer Availability: Multiple manufacturers (Diodes Incorporated, Fairchild Semiconductor, Vishay, Micro Commercial Co) provide equivalent parts, reducing single-source supply risk.

Frequently Asked Questions (FAQ)

Q: Can SMBJ11CA-13-F be used as a direct replacement for SMBJ11CA-13?

A: Yes. SMBJ11CA-13-F is electrically and mechanically identical to SMBJ11CA-13, with the primary difference being packaging format (Tape & Reel versus unspecified) and active product status. Both maintain 11V reverse standoff, 18.2V clamping voltage, and 33A peak pulse current.

Q: What is the difference between Bulk and Tape & Reel packaging?

A: Bulk packaging contains loose components suitable for manual assembly or low-volume applications. Tape & Reel (TR) packaging provides components on continuous tape for automated pick-and-place assembly equipment. Electrical performance is identical; selection depends on assembly process requirements.

Q: Does the SMBJ11CA-TP extended temperature range (-55 to 175°C) affect circuit compatibility?

A: No. The extended upper temperature limit of 175°C is a superset capability. SMBJ11CA-TP functions identically within the original -55 to 150°C range and provides additional thermal margin if the application environment exceeds 150°C.

Q: Are there RoHS compliance differences between substitute parts?

A: Yes. SMBJ11CA-13-F, SMBJ11CA-E3/52, and SMBJ11CA-TP are RoHS3 compliant. The Fairchild SMBJ11CA (Bulk) does not specify RoHS status in available data. If RoHS compliance is a design requirement, select from the three compliant alternatives.

Q: Can I mix manufacturers in the same assembly?

A: Yes. All substitute parts meet identical electrical and mechanical specifications. Mixing manufacturers (Diodes Incorporated, Fairchild, Vishay, Micro Commercial Co) in the same design is functionally acceptable. Verify procurement and supply chain policies for any internal restrictions.

Q: What is the significance of the "-13" suffix in SMBJ11CA-13?

A: The "-13" suffix typically indicates a specific packaging or date code variant within the SMBJ11CA product family. Functionally, SMBJ11CA-13 and SMBJ11CA are equivalent. The "-13-F" variant from Diodes Incorporated maintains this designation with Tape & Reel packaging.

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