SMBJ51CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ51CE3/TR13 is a bidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component operates with a 51V reverse standoff voltage and provides 600W peak pulse power dissipation in a DO-214AA (SMB) package. The part is Active status and ROHS3 compliant, making it suitable for modern electronic circuit protection requirements. Equivalent and substitute parts are identified based on matching electrical characteristics, package compatibility, and operational parameters that ensure functional interchangeability within specified application constraints.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	51	V
Voltage - Breakdown (Min)	56.7	V
Voltage - Clamping (Max) @ Ipp	91.1	V
Current - Peak Pulse (10/1000µs)	6.6	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ51CE3/TR13 are qualified based on the following criteria:

Electrical Parameter Matching:

Reverse standoff voltage of 51V (nominal)
Breakdown voltage minimum of 56.7V
Peak pulse power rating of 600W
Single bidirectional channel configuration
General-purpose application classification

Package Compatibility:

DO-214AA / SMB surface-mount package
Surface-mount mounting type

Compliance & Status:

Active product status
ROHS3 compliance
MSL rating of 1 (Unlimited)
REACH Unaffected status
EAR99 ECCN classification

Substitute parts may exhibit variations in clamping voltage (82.4V to 91.1V range) and peak pulse current (6.6A to 7.3A range) while maintaining the core 51V standoff voltage specification and 600W power dissipation capability. Operating temperature range variations are acceptable within the specified bounds.

Parameter Comparison

Parameter	SMBJ51CE3/TR13 (Microchip)	SMBJ51CA (MDD)	SMBJ51CA-13-F (Diodes Inc.)
Manufacturer	Microchip Technology	MDD	Diodes Incorporated
Voltage - Reverse Standoff (Typ)	51V	51V	51V
Voltage - Breakdown (Min)	56.7V	56.7V	56.7V
Voltage - Clamping (Max) @ Ipp	91.1V	82.4V	82.4V
Current - Peak Pulse (10/1000µs)	6.6A	7.3A	7.3A
Power - Peak Pulse	600W	600W	600W
Operating Temperature Range	-65 to 150°C (TJ)	-50 to 150°C (TJ)	-55 to 150°C (TJ)
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Bidirectional Channels	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Selection Criteria:

All substitute parts listed maintain Active product status and full ROHS3 compliance, ensuring regulatory alignment with modern manufacturing standards. The SMBJ51CA-13-F from Diodes Incorporated offers the widest operating temperature range (-55 to 150°C), providing enhanced thermal margin for applications requiring extended low-temperature operation compared to the original SMBJ51CE3/TR13 (-65 to 150°C).

Voltage Clamping Considerations:

The SMBJ51CE3/TR13 exhibits a maximum clamping voltage of 91.1V, while both SMBJ51CA variants specify 82.4V clamping voltage. This 8.7V difference represents a lower clamping threshold in substitute parts, which provides improved transient suppression characteristics in applications where lower voltage clamping is beneficial.

Current Handling:

Substitute parts SMBJ51CA and SMBJ51CA-13-F support 7.3A peak pulse current compared to 6.6A in the original part, representing a 10.6% increase in current capacity while maintaining identical 600W peak pulse power rating.

Compliance & Certification:

All parts carry identical REACH Unaffected status, EAR99 ECCN classification, and MSL 1 (Unlimited) moisture sensitivity rating, confirming compatibility across supply chain and environmental handling requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ51CA substitute for SMBJ51CE3/TR13 in all applications?

A: SMBJ51CA maintains identical reverse standoff voltage (51V), breakdown voltage (56.7V), and peak pulse power (600W) specifications. The lower clamping voltage (82.4V vs. 91.1V) and higher peak pulse current (7.3A vs. 6.6A) make it suitable for applications where these characteristics are acceptable. Operating temperature range differs (-50 to 150°C vs. -65 to 150°C), which may affect suitability in extreme low-temperature environments.

Q: What is the difference between SMBJ51CA from MDD and SMBJ51CA-13-F from Diodes Incorporated?

A: Both parts share identical electrical specifications (51V standoff, 56.7V breakdown, 82.4V clamping, 7.3A peak pulse current, 600W power). The primary difference is operating temperature range: SMBJ51CA-13-F extends to -55°C minimum versus -50°C for MDD variant. Packaging differs: SMBJ51CA-13-F is supplied in Cut Tape (CT) & Digi-Reel format, while MDD variant packaging is not specified.

Q: Are all substitute parts in the same DO-214AA package?

A: Yes. SMBJ51CE3/TR13, SMBJ51CA, and SMBJ51CA-13-F all use DO-214AA (SMB) surface-mount package, ensuring mechanical and electrical compatibility on printed circuit boards designed for SMB footprints.

Q: Do substitute parts maintain ROHS3 compliance?

A: All listed substitute parts are ROHS3 compliant and carry REACH Unaffected status, matching the regulatory compliance profile of the original SMBJ51CE3/TR13.

Q: What inventory availability exists for substitute parts?

A: SMBJ51CA (MDD) maintains 15,680 pieces in stock. SMBJ51CA-13-F (Diodes Incorporated) maintains 12,300 pieces in stock. Original SMBJ51CE3/TR13 (Microchip) maintains 804 pieces in stock.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message