SMBJ120CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ120CE3/TR13 is a bidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology. This surface mount component operates with a reverse standoff voltage of 120V and provides transient protection through a maximum clamping voltage of 214V at peak pulse current. The device is classified as Active product status and is RoHS3 compliant. Substitute parts are identified to address inventory availability, lead time requirements, or specific application constraints while maintaining electrical and mechanical compatibility within the DO-214AA (SMB) package form factor.

Substiute Parts

SMBJ120CE3/TR13

Microchip TechnologyIn Stock: 895SMBJ120CE3/TR13 Datasheet

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SMBJ120CA

MeritekIn Stock: 34486SMBJ120CA Datasheet

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SMBJ120CA-13-F

Diodes IncorporatedIn Stock: 3955SMBJ120CA-13-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ120CE3/TR13 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 120V
• Voltage - Breakdown (Min): 133V
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Bidirectional Channels: 1
• Type: Zener

Allowable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: Range 193V to 214V
• Current - Peak Pulse (10/1000µs): Range 2.8A to 3.11A
• Operating Temperature Range: Minimum -55°C to 150°C (subset of or equal to main part range)
• Power - Peak Pulse: 600W (constant)

Substitute parts SMBJ120CA and SMBJ120CA-13-F meet these criteria with identical standoff and breakdown voltages, matching package specifications, and compatible clamping voltage and peak pulse current characteristics within the allowable range.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SMBJ120CE3/TR13, SMBJ120CA, and SMBJ120CA-13-F—are Active product status devices with full RoHS3 compliance and REACH Unaffected designation. Selection between these parts is determined by application-specific requirements and availability constraints.

SMBJ120CE3/TR13 (Microchip Technology): Primary selection when maximum clamping voltage specification of 214V is required. Supports extended operating temperature range of -65°C to 150°C. Supplied in Tape & Reel packaging.

SMBJ120CA (Meritek): Suitable for applications where lower clamping voltage of 193V is acceptable. Operating temperature range of -55°C to 150°C is sufficient for most general-purpose applications. Higher inventory availability (34,400 pcs) supports rapid procurement.

SMBJ120CA-13-F (Diodes Incorporated): Functionally equivalent to SMBJ120CA with identical electrical specifications. Supplied in Tape & Reel packaging. Operating temperature range of -55°C to 150°C. Moderate inventory availability (3,900 pcs).

All substitute parts maintain identical reverse standoff voltage (120V), breakdown voltage (133V minimum), peak pulse power (600W), and package form factor (DO-214AA/SMB). Clamping voltage differential (193V vs. 214V) and peak pulse current variation (2.8A to 3.11A) fall within acceptable tolerance for general-purpose transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ120CA be used as a direct replacement for SMBJ120CE3/TR13?

A: SMBJ120CA is electrically compatible for applications where the clamping voltage specification of 193V meets circuit requirements. The lower clamping voltage represents improved transient suppression performance. Both parts share identical reverse standoff voltage (120V), breakdown voltage (133V), and package specifications (DO-214AA/SMB). Operating temperature range difference (-55°C vs. -65°C minimum) must be evaluated against application requirements.

Q: What is the difference between SMBJ120CA and SMBJ120CA-13-F?

A: Both parts are functionally equivalent with identical electrical specifications: 120V reverse standoff, 133V breakdown, 193V clamping voltage, and 600W peak pulse power. Primary differences are manufacturer (Meritek vs. Diodes Incorporated) and packaging format (standard vs. Tape & Reel). Both operate across -55°C to 150°C temperature range and are housed in DO-214AA/SMB packages.

Q: Why does SMBJ120CE3/TR13 have a higher clamping voltage than the substitute parts?

A: Clamping voltage is a characteristic of the specific diode design and manufacturing process. SMBJ120CE3/TR13 specifies 214V maximum clamping voltage, while SMBJ120CA and SMBJ120CA-13-F specify 193V. Both values are within acceptable ranges for 120V standoff voltage devices. Lower clamping voltage typically provides superior transient suppression performance.

Q: Are all three parts suitable for surface mount assembly?

A: Yes. All three parts are surface mount devices in DO-214AA (SMB) package form factor. SMBJ120CE3/TR13 and SMBJ120CA-13-F are supplied in Tape & Reel format for automated assembly. SMBJ120CA packaging format is not specified but maintains identical package specifications.

Q: What is the operating temperature consideration when selecting a substitute?

A: SMBJ120CE3/TR13 operates from -65°C to 150°C. Both substitute parts (SMBJ120CA and SMBJ120CA-13-F) operate from -55°C to 150°C. For applications requiring operation below -55°C, SMBJ120CE3/TR13 is the required selection. For applications within -55°C to 150°C range, all three parts are suitable.

Q: Are all parts RoHS3 compliant?

A: Yes. SMBJ120CE3/TR13, SMBJ120CA, and SMBJ120CA-13-F are all RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status.

Q: What is the peak pulse current difference between the main part and substitutes?

A: SMBJ120CE3/TR13 specifies 2.8A peak pulse current (10/1000µs). SMBJ120CA specifies 3.11A and SMBJ120CA-13-F specifies 3.1A. All three parts deliver 600W peak pulse power. The higher peak pulse current in substitute parts indicates improved current handling capability within the same power envelope.