SMCJ7.5E3/TR13 Equivalent & Substitute Parts

Part Overview

The SMCJ7.5E3/TR13 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology in a surface-mount DO-214AB (SMC) package. The device provides overvoltage protection for general-purpose applications with a 7.5V reverse standoff voltage and 14.3V maximum clamping voltage. The product status is Active with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts may be required due to inventory availability, lead time constraints, or specific application requirements within the allowable electrical and mechanical parameter ranges.

Substiute Parts

SMCJ7.5E3/TR13

Microchip TechnologyIn Stock: 985SMCJ7.5E3/TR13 Datasheet

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SMCJ7.5A

Taiwan Semiconductor CorporationIn Stock: 9312SMCJ7.5A Datasheet

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SMCJ7.5A

Taiwan Semiconductor CorporationIn Stock: 9312SMCJ7.5A Datasheet

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SMCJ7.5A-13-F

Diodes IncorporatedIn Stock: 4060SMCJ7.5A-13-F Datasheet

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SMCJ8.5A-13-F

Diodes IncorporatedIn Stock: 1063SMCJ8.5A-13-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMCJ7.5E3/TR13 is permitted with parts that maintain identical or compatible electrical characteristics within the following allowable parameter ranges:

Critical Parameters for Substitution:

• Voltage - Reverse Standoff (Typ): 7.5V (exact match required)
• Voltage - Breakdown (Min): 8.33V (exact match required)
• Package / Case: DO-214AB or SMC (compatible equivalents)
• Mounting Type: Surface Mount (required)
• Type: Zener TVS Diode (unidirectional, single channel)

Permissible Variations:

• Voltage - Clamping (Max) @ Ipp: 12.9V to 14.3V
• Current - Peak Pulse (10/1000µs): 104.2A to 122A
• Operating Temperature (Lower Limit): -55°C or lower (SMCJ7.5E3/TR13 is -65°C)

Substitute parts identified: SMCJ7.5A (Taiwan Semiconductor Corporation), SMCJ7.5A-13-F (Diodes Incorporated), and SMCJ8.5A-13-F (Diodes Incorporated) meet these criteria with compatible electrical performance and package specifications.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, meeting regulatory and environmental requirements equivalent to the SMCJ7.5E3/TR13. Selection between substitute options depends on specific application requirements within the permitted parameter ranges:

SMCJ7.5A (Taiwan Semiconductor Corporation): Identical reverse standoff (7.5V) and breakdown voltage (8.33V) with lower clamping voltage (12.9V) and higher peak pulse current capability (122A). Suitable for applications requiring maximum current handling within the 7.5V standoff class. Operating temperature minimum of -55°C is acceptable for most industrial applications.

SMCJ7.5A-13-F (Diodes Incorporated): Matches the standoff and breakdown voltages with 12.9V clamping and 116.3A peak pulse current. Provided in Tape & Reel packaging. Operating temperature range of -55°C ~ 150°C accommodates standard industrial environments.

SMCJ8.5A-13-F (Diodes Incorporated): Features a higher reverse standoff voltage of 8.5V with clamping voltage of 14.4V, closely matching the original device's clamping performance. Current capability of 104.2A aligns with the original specification. This option is suitable for applications requiring slightly higher voltage thresholds while maintaining comparable clamping characteristics.

Frequently Asked Questions (FAQ)

Q: Can SMCJ7.5A from Taiwan Semiconductor Corporation be used as a direct replacement for SMCJ7.5E3/TR13?

A: Yes. The SMCJ7.5A maintains identical reverse standoff (7.5V) and breakdown voltages (8.33V) with compatible package specifications (DO-214AB, SMC surface mount). The lower clamping voltage (12.9V vs. 14.3V) and higher peak pulse current (122A vs. 104.9A) represent permissible variations within the allowable parameter range for this device class.

Q: What is the difference between SMCJ7.5A-13-F and SMCJ8.5A-13-F?

A: Both parts are manufactured by Diodes Incorporated in DO-214AB SMC packages. The primary difference is the reverse standoff voltage: SMCJ7.5A-13-F maintains the 7.5V standoff matching the original device, while SMCJ8.5A-13-F has an 8.5V standoff. The clamping voltages differ accordingly (12.9V and 14.4V respectively). Selection depends on whether the application requires the specific 7.5V or 8.5V threshold.

Q: Are all substitute parts compatible with the same PCB layout and reflow profile?

A: Yes. All identified substitutes use the same DO-214AB (SMC) surface-mount package with identical pinout and land pattern compatibility. Reflow profiles and assembly processes remain unchanged from the original design.

Q: What is the significance of the operating temperature difference between SMCJ7.5E3/TR13 (-65°C ~ 150°C) and the substitute parts (-55°C ~ 150°C)?

A: The original device supports operation down to -65°C, while substitute parts support -55°C minimum. If the application requires operation below -55°C, the SMCJ7.5E3/TR13 is the only suitable option. For applications within -55°C ~ 150°C range, all substitutes are acceptable.

Q: Do all substitute parts have the same moisture sensitivity rating?

A: Yes. All identified substitute parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity limitations during storage, handling, or assembly processes.