SMBJ11CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ11CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with an 11V reverse standoff voltage and provides clamping at 20.1V maximum, with a peak pulse current rating of 29.9A. The component is packaged in DO-214AA (SMB) format and supplied on tape and reel. The part maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified based on matching core electrical parameters: reverse standoff voltage, breakdown voltage, bidirectional channel configuration, package type, and surface-mount technology. Substitutes must maintain functional compatibility within the specified operating temperature and voltage clamping ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	11	V
Voltage - Breakdown (Min)	12.2	V
Voltage - Clamping (Max) @ Ipp	20.1	V
Current - Peak Pulse (10/1000µs)	29.9	A
Power - Peak Pulse	600	W
Bidirectional Channels	1	—
Type	Zener	—
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-65°C ~ 150°C	TJ

Substitute Part Grouping Explanation

Substitute parts for the SMBJ11CE3/TR13 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Reverse standoff voltage: 11V (typical)
Breakdown voltage minimum: 12.2V
Bidirectional channel configuration: 1 channel
Package type: DO-214AA (SMB)
Mounting technology: Surface mount
Zener diode type classification

Allowable Variation Parameters:

Voltage clamping maximum: Substitute parts rated at 18.2V clamping are acceptable within the same protection class
Peak pulse current: Substitute parts rated at 33A exceed the 29.9A requirement and provide enhanced transient handling capability
Peak pulse power: All substitutes maintain the 600W rating
Operating temperature range: Substitutes with extended or equivalent temperature ranges are functionally compatible
Packaging format: Tape and reel or bulk packaging formats are interchangeable for component selection purposes

All identified substitutes maintain identical reverse standoff and breakdown voltage specifications, ensuring equivalent circuit protection performance. Clamping voltage differences reflect manufacturing tolerance variations within the SMBJ11 series specification envelope.

Parameter Comparison

Parameter	SMBJ11CE3/TR13 (Microchip)	SMBJ11CA (Fairchild)	SMBJ11CA-13-F (Diodes Inc)	SMBJ11CA-TP (MCC)
Manufacturer	Microchip Technology	Fairchild Semiconductor	Diodes Incorporated	Micro Commercial Co
Voltage - Reverse Standoff (Typ)	11V	11V	11V	11V
Voltage - Breakdown (Min)	12.2V	12.2V	12.2V	12.2V
Voltage - Clamping (Max) @ Ipp	20.1V	18.2V	18.2V	18.2V
Current - Peak Pulse (10/1000µs)	29.9A	33A	33A	33A
Power - Peak Pulse	600W	600W	600W	600W
Bidirectional Channels	1	1	1	1
Type	Zener	Zener	Zener	Zener
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature Range	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 175°C
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	Not specified	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitute: SMBJ11CA-13-F (Diodes Incorporated)

The SMBJ11CA-13-F is the preferred substitute for the SMBJ11CE3/TR13. This part maintains identical reverse standoff voltage (11V) and breakdown voltage (12.2V) specifications. The clamping voltage of 18.2V is within acceptable tolerance of the original 20.1V specification. The peak pulse current rating of 33A exceeds the original 29.9A requirement, providing enhanced transient protection margin. The component carries ROHS3 compliance and unlimited moisture sensitivity rating, matching the original part's environmental certifications. Tape and reel packaging format ensures compatibility with automated assembly processes.

Secondary Substitute: SMBJ11CA-TP (Micro Commercial Co)

The SMBJ11CA-TP provides equivalent electrical performance with identical voltage specifications. This part extends the operating temperature range to -55°C ~ 175°C, offering superior thermal performance compared to the original -65°C ~ 150°C range. ROHS3 compliance and unlimited moisture sensitivity rating are maintained. Tape and reel packaging supports standard surface-mount assembly workflows.

Tertiary Substitute: SMBJ11CA (Fairchild Semiconductor)

The SMBJ11CA from Fairchild Semiconductor matches all critical electrical parameters. This part is available in bulk packaging format, which may be suitable for high-volume procurement scenarios. The operating temperature range of -55°C ~ 150°C is narrower than the original specification at the lower temperature limit. Peak pulse current rating of 33A provides enhanced transient handling capability.

All substitute parts maintain active product status and are suitable for direct component replacement in general-purpose transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: What determines whether a part can substitute for the SMBJ11CE3/TR13?

A: Substitute parts must match the following core parameters: 11V reverse standoff voltage, 12.2V minimum breakdown voltage, single bidirectional channel configuration, DO-214AA (SMB) package type, and surface-mount technology. Clamping voltage and peak pulse current may vary within the SMBJ11 series specification envelope.

Q: Are the substitute parts with 18.2V clamping voltage compatible with the original 20.1V specification?

A: Yes. The 18.2V clamping voltage represents a lower clamping point within acceptable tolerance for the SMBJ11 series. This provides slightly tighter voltage regulation during transient events. Both values fall within the same protection class for 11V standoff voltage applications.

Q: Can I use SMBJ11CA in bulk packaging instead of tape and reel format?

A: Bulk packaging is suitable for component selection and procurement purposes. However, assembly process compatibility must be verified with your manufacturing workflow. Tape and reel format is standard for automated surface-mount assembly lines.

Q: What is the significance of the 33A peak pulse current rating in substitute parts compared to the original 29.9A?

A: The higher 33A rating in substitute parts provides enhanced transient current handling capability. This represents a performance improvement and does not compromise compatibility. The original circuit design will operate within the substitute part's current rating.

Q: Do all substitute parts have the same environmental compliance as the original SMBJ11CE3/TR13?

A: The SMBJ11CA-13-F and SMBJ11CA-TP maintain ROHS3 compliance and unlimited moisture sensitivity rating matching the original part. The Fairchild SMBJ11CA does not specify these certifications in the provided data. Verify compliance requirements with your procurement specifications.

Q: What is the operating temperature difference between substitute parts?

A: The SMBJ11CE3/TR13 operates from -65°C to 150°C. The SMBJ11CA-TP extends the upper limit to 175°C but narrows the lower limit to -55°C. The SMBJ11CA and SMBJ11CA-13-F operate from -55°C to 150°C. Select based on your application's thermal requirements.

Q: Are there any package or pinout differences between these parts?

A: All parts use the DO-214AA (SMB) package with identical pinout and footprint. Surface-mount assembly compatibility is maintained across all substitutes.

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