SMBJ85CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ85CE3/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 85V reverse standoff voltage and provides clamping at 151V maximum, with a peak pulse current rating of 3.9A and 600W peak pulse power dissipation. The component is housed in a DO-214AA (SMB) package and supplied in Tape & Reel format.

The SMBJ85CE3/TR13 is classified as an active product with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified based on matching the core electrical parameters: 85V reverse standoff voltage, 94.4V minimum breakdown voltage, DO-214AA package format, surface-mount technology, and general-purpose TVS diode classification. Substitutes may vary in clamping voltage and peak pulse current within acceptable operating ranges for the same voltage class.

Substiute Parts

SMBJ85CE3/TR13

Microchip TechnologyIn Stock: 824SMBJ85CE3/TR13 Datasheet

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SMBJ85CA

MeritekIn Stock: 145208SMBJ85CA Datasheet

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SMBJ85CA

MeritekIn Stock: 145208SMBJ85CA Datasheet

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SMBJ85CA

MeritekIn Stock: 145208SMBJ85CA Datasheet

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SMBJ85CA-13-F

Diodes IncorporatedIn Stock: 6296SMBJ85CA-13-F Datasheet

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SMBJ85CA-TR

STMicroelectronicsIn Stock: 35297SMBJ85CA-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ85CE3/TR13 are qualified based on the following core electrical and mechanical parameters:

Primary Matching Criteria:

• Voltage - Reverse Standoff: 85V (exact match required)
• Voltage - Breakdown (Min): 94.4V or 94V (within specification tolerance)
• Package / Case: DO-214AA (SMB) surface-mount format (exact match required)
• Type: Zener diode, bidirectional, single channel (exact match required)
• Power - Peak Pulse: 600W (exact match required)
• RoHS3 Compliance: Required for all substitutes
• Moisture Sensitivity Level: MSL 1 (Unlimited) preferred

Secondary Variation Parameters (Acceptable Ranges):

• Voltage - Clamping (Max) @ Ipp: 137V to 151V (lower clamping voltages provide enhanced protection margins)
• Current - Peak Pulse (10/1000µs): 3.9A to 4.6A (higher current ratings maintain or exceed original specification)
• Operating Temperature Range: -55°C to 150°C or -65°C to 150°C (both acceptable for general-purpose applications)

All substitute parts listed maintain the same functional classification (general-purpose TVS diode), active product status, and compliance certifications as the main part.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are active products with full RoHS3 compliance and REACH unaffected status, meeting the same regulatory and environmental requirements as the SMBJ85CE3/TR13.

SMBJ85CA (Meritek): This substitute maintains the 85V reverse standoff voltage and 94.4V breakdown voltage specification. The clamping voltage is reduced to 137V with peak pulse current of 4.38A. Operating temperature range is -55°C to 150°C. This part is suitable for applications where the lower clamping voltage provides acceptable protection margins. Inventory availability is 145,100 units.

SMBJ85CA-13-F (Diodes Incorporated): This substitute is supplied in Tape & Reel packaging and maintains the 85V reverse standoff voltage with 94.4V breakdown voltage. Clamping voltage is 137V with peak pulse current of 4.4A. Operating temperature range is -55°C to 150°C. Inventory availability is 6,200 units.

SMBJ85CA-TR (STMicroelectronics): This substitute is supplied in Tape & Reel packaging and maintains the 85V reverse standoff voltage with 94V breakdown voltage. Clamping voltage is 137V with peak pulse current of 4.6A, providing the highest current rating among substitutes. Operating temperature range is -55°C to 150°C. The TRANSIL™ series designation indicates STMicroelectronics' TVS diode product line. Inventory availability is 35,200 units.

Selection between substitutes depends on application requirements for clamping voltage tolerance, peak pulse current capacity, and operating temperature range. All substitutes are electrically and mechanically compatible with the SMBJ85CE3/TR13 within the specified parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can SMBJ85CA (Meritek) be used as a direct replacement for SMBJ85CE3/TR13?

A: Yes. Both parts share the same 85V reverse standoff voltage, 94.4V breakdown voltage, DO-214AA package format, and 600W peak pulse power rating. The SMBJ85CA has a lower clamping voltage (137V vs. 151V) and higher peak pulse current (4.38A vs. 3.9A), which provides enhanced transient suppression capability. Operating temperature range differs slightly (-55°C to 150°C vs. -65°C to 150°C), which is acceptable for general-purpose applications.

Q: What is the difference between SMBJ85CA-13-F and SMBJ85CA-TR?

A: Both parts are functionally equivalent with 85V reverse standoff voltage, 137V clamping voltage, and 600W peak pulse power. SMBJ85CA-13-F is manufactured by Diodes Incorporated with 4.4A peak pulse current. SMBJ85CA-TR is manufactured by STMicroelectronics with 4.6A peak pulse current and is part of the TRANSIL™ series. Both are supplied in Tape & Reel format and have identical operating temperature ranges (-55°C to 150°C).

Q: Why do substitute parts have lower clamping voltages (137V) compared to the original SMBJ85CE3/TR13 (151V)?

A: Lower clamping voltages represent a design variation within the 85V voltage class. Both the original part and substitutes maintain the same 85V reverse standoff voltage and 94.4V breakdown voltage specifications. The lower clamping voltage in substitutes provides tighter voltage regulation during transient events, which is acceptable and often beneficial for circuit protection. This variation is within the allowed parameter range for 85V TVS diodes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (SMBJ85CA from Meritek, SMBJ85CA-13-F from Diodes Incorporated, and SMBJ85CA-TR from STMicroelectronics) are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH unaffected status, matching the compliance profile of the SMBJ85CE3/TR13.

Q: What is the operating temperature difference between the original part and substitutes?

A: The SMBJ85CE3/TR13 operates from -65°C to 150°C, while all substitute parts operate from -55°C to 150°C. The upper temperature limit is identical. The lower temperature limit differs by 10°C. For general-purpose applications operating above -55°C, this difference is not significant. Applications requiring operation below -55°C must use the original SMBJ85CE3/TR13 or confirm substitute part suitability with the application requirements.

Q: Can I use SMBJ85CA-TR (STMicroelectronics) in place of SMBJ85CE3/TR13 (Microchip)?

A: Yes. Both parts are 85V TVS diodes in DO-214AA packages with identical reverse standoff and breakdown voltages. SMBJ85CA-TR has a lower clamping voltage (137V vs. 151V) and higher peak pulse current (4.6A vs. 3.9A). The operating temperature range is -55°C to 150°C versus -65°C to 150°C. All regulatory and compliance certifications match. This substitution is valid for applications within the specified parameter ranges.

Q: What packaging formats are available for substitute parts?

A: SMBJ85CA (Meritek) is available without specified packaging designation. SMBJ85CA-13-F (Diodes Incorporated) and SMBJ85CA-TR (STMicroelectronics) are both supplied in Tape & Reel (TR) format, matching the original SMBJ85CE3/TR13 packaging. All parts use the same DO-214AA (SMB) component package for surface-mount assembly.