SMAJ6.5CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMAJ6.5CE3/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 a reverse standoff voltage of 6.5V and provides clamping at 12.3V maximum, with peak pulse current handling of 40.7A at 500W peak pulse power. The device is packaged in DO-214AC (SMA) 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 electrical characteristics within allowable parameter tolerances and identical mechanical packaging specifications. Substitution candidates maintain the same reverse standoff voltage (6.5V), bidirectional channel configuration, surface-mount SMA package format, and general-purpose application profile.

Substiute Parts

SMAJ6.5CE3/TR13

Microchip TechnologyIn Stock: 832SMAJ6.5CE3/TR13 Datasheet

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SMA6J6.5CA-TR

STMicroelectronicsIn Stock: 19892SMA6J6.5CA-TR Datasheet

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SMAJ6.5CA

MDDIn Stock: 7328SMAJ6.5CA Datasheet

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SMAJ6.5CA

MDDIn Stock: 7328SMAJ6.5CA Datasheet

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SMAJ6.5CA-13-F

Diodes IncorporatedIn Stock: 17312SMAJ6.5CA-13-F Datasheet

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SMAJ6.5CA-TP

Micro Commercial CoIn Stock: 8843SMAJ6.5CA-TP Datasheet

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SMAJ6.5CA-TR

STMicroelectronicsIn Stock: 1418SMAJ6.5CA-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ6.5CE3/TR13 are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Reverse standoff voltage: 6.5V (exact match required)
• Breakdown voltage minimum: 7.2V to 7.22V range
• Package format: DO-214AC / SMA surface mount (exact match required)
• Bidirectional channel configuration: 1 channel (exact match required)
• Device type: Zener TVS diode (exact match required)
• Application category: General Purpose (exact match required)

Secondary Compatibility Parameters:

• Voltage clamping maximum: 11.2V to 14.5V (acceptable range for substitution)
• Peak pulse current: 35.7A to 276A (acceptable range for substitution)
• Peak pulse power: 400W to 600W (acceptable range for substitution)
• Operating temperature range: -55°C to 175°C (acceptable range for substitution)
• Compliance certifications: RoHS3, REACH Unaffected, MSL 1 (all candidates match)

Substitute parts meeting these criteria are functionally compatible for general-purpose transient voltage suppression applications where the SMAJ6.5CE3/TR13 is specified, provided that the application circuit tolerates the parameter variations within the identified ranges.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and full RoHS3 compliance with REACH Unaffected designation, matching the regulatory and environmental compliance profile of the SMAJ6.5CE3/TR13.

SMAJ6.5CA (MDD) and SMAJ6.5CA-13-F (Diodes Incorporated) provide the closest electrical match to the original part, with clamping voltage of 11.2V and peak pulse current of 35.7A. These parts are suitable for applications where the original 12.3V clamping specification can accommodate a 0.9V reduction. Both maintain identical reverse standoff and breakdown voltage characteristics.

SMAJ6.5CA-TP (Micro Commercial Co) offers identical electrical parameters to the MDD variant with extended upper operating temperature range to 175°C, providing thermal margin for high-temperature environments while maintaining the same clamping and current specifications.

SMA6J6.5CA-TR and SMAJ6.5CA-TR (STMicroelectronics) provide higher peak pulse current handling (160A to 276A) and elevated clamping voltage (14.5V), suitable for applications requiring enhanced transient suppression capability. These parts accommodate higher energy transients while maintaining the 6.5V reverse standoff specification.

Selection between substitute candidates depends on application-specific requirements for clamping voltage tolerance, peak pulse current capacity, and operating temperature range. All candidates are mechanically and electrically compatible within the specified parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can SMAJ6.5CA (MDD) directly replace SMAJ6.5CE3/TR13 in existing designs?

A: Yes. Both parts share identical reverse standoff voltage (6.5V), breakdown voltage (7.22V), bidirectional channel configuration, and DO-214AC SMA package format. The clamping voltage difference (11.2V versus 12.3V) is within acceptable substitution tolerance for general-purpose transient suppression applications. Verify that the application circuit tolerates the 0.9V reduction in maximum clamping voltage.

Q: What is the difference between the two STMicroelectronics variants (SMA6J6.5CA-TR and SMAJ6.5CA-TR)?

A: Both STMicroelectronics parts maintain identical reverse standoff voltage and package format. SMA6J6.5CA-TR provides 276A peak pulse current (8/20µs pulse), while SMAJ6.5CA-TR provides 160A peak pulse current (8/20µs pulse). The higher current variant accommodates more severe transient events. Both clamp at 14.5V maximum.

Q: Are packaging differences between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® significant for substitution?

A: Packaging format affects supply chain logistics and handling but does not impact electrical or mechanical compatibility. Parts supplied on tape and reel or cut tape with Digi-Reel® are functionally identical when mounted. Selection depends on assembly process requirements and inventory management preferences.

Q: Does the operating temperature range difference affect substitution suitability?

A: Operating temperature range differences are acceptable for substitution provided the application environment falls within the substitute part's specified range. SMAJ6.5CA-TP and SMA6J6.5CA-TR extend to 175°C, offering thermal margin for high-temperature applications. MDD and Diodes Incorporated variants maintain -50°C to -55°C minimum temperatures, suitable for standard industrial environments.

Q: Why do some substitute parts show different peak pulse current measurement standards (10/1000µs versus 8/20µs)?

A: Peak pulse current ratings reflect different industry measurement standards. The 10/1000µs standard applies to the original Microchip part and MDD/Diodes variants. The 8/20µs standard applies to STMicroelectronics parts. Both standards characterize transient suppression capability; the specific standard used does not prevent substitution but reflects manufacturer test methodology.

Q: Can SMAJ6.5CA-TP be used in applications requiring the full -65°C lower temperature limit of SMAJ6.5CE3/TR13?

A: No. SMAJ6.5CA-TP specifies -55°C minimum operating temperature, which does not meet the -65°C requirement. For applications requiring -65°C operation, the original SMAJ6.5CE3/TR13 or equivalent parts with matching -65°C specification must be used.

Q: Are all substitute parts suitable for power line protection applications?

A: No. All identified parts, including the original SMAJ6.5CE3/TR13, are designated for general-purpose applications and do not support power line protection. Power line protection requires specialized TVS diodes with specific certifications and ratings not present in this product category.