SMAJ100CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMAJ100CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This surface-mount component operates in the 100V reverse standoff voltage class and provides clamping protection at 179V maximum. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to address inventory availability, alternative sourcing requirements, or specific application constraints while maintaining electrical and mechanical compatibility within the TVS diode category.

Substiute Parts

SMAJ100CE3/TR13

Microchip TechnologyIn Stock: 969SMAJ100CE3/TR13 Datasheet

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SMAJ100CA

MDDIn Stock: 35361SMAJ100CA Datasheet

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SMAJ100CA

MDDIn Stock: 35361SMAJ100CA Datasheet

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SMAJ100CA-13-F

Diodes IncorporatedIn Stock: 435184SMAJ100CA-13-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ100CE3/TR13 are qualified based on the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 100V (exact match required)
• Voltage - Breakdown (Min): 111V (exact match required)
• Type: Zener (exact match required)
• Bidirectional Channels: 1 (exact match required)
• Applications: General Purpose (exact match required)

Mechanical Compatibility Criteria:

• Package / Case: DO-214AC, SMA (exact match required)
• Mounting Type: Surface Mount (exact match required)

Acceptable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: 162V to 179V (within functional tolerance for TVS protection)
• Current - Peak Pulse (10/1000µs): 2.5A to 2.8A (within functional tolerance for TVS protection)
• Power - Peak Pulse: 400W to 500W (proportional to current rating)
• Operating Temperature Range: -55°C to -65°C minimum; 150°C maximum (within or exceeding specified range)

Substitute parts maintain identical reverse standoff and breakdown voltages while offering alternative clamping characteristics and current ratings suitable for the same protection class. All substitutes comply with RoHS3 and maintain MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

SMAJ100CA (MDD Manufacturer)

The SMAJ100CA offers electrical equivalence in reverse standoff and breakdown voltage specifications. This substitute presents a 17V reduction in maximum clamping voltage (162V versus 179V) and 0.3A reduction in peak pulse current. The operating temperature minimum is -50°C, which is 15°C higher than the primary part. Selection of this substitute is appropriate for applications where the reduced clamping voltage and current ratings remain within system protection requirements and where the narrower temperature range does not conflict with deployment conditions. RoHS3 compliance and MSL 1 rating are maintained.

SMAJ100CA-13-F (Diodes Incorporated Manufacturer)

The SMAJ100CA-13-F provides identical electrical specifications to the MDD SMAJ100CA variant with improved low-temperature performance at -55°C minimum operating temperature, reducing the temperature differential to -10°C from the primary part. This substitute maintains the same 162V clamping voltage and 2.5A peak pulse current characteristics. Diodes Incorporated packaging is specified as Tape & Reel (TR), matching the primary part's packaging format. RoHS3 compliance, MSL 1 rating, and REACH Unaffected status are confirmed. This substitute offers the closest operational envelope to the SMAJ100CE3/TR13 across temperature range and packaging consistency.

Selection Basis:

All substitute parts maintain active product status, full RoHS3 compliance, and unlimited moisture sensitivity rating. Electrical compatibility is established through identical reverse standoff (100V) and breakdown (111V) voltages. Mechanical compatibility is confirmed through DO-214AC/SMA package and surface-mount configuration. Substitution decisions should be based on application-specific requirements for clamping voltage tolerance, peak current capacity, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can SMAJ100CA or SMAJ100CA-13-F be used as direct replacements for SMAJ100CE3/TR13?

A: Both substitute parts share identical reverse standoff voltage (100V) and breakdown voltage (111V) specifications, which are the primary electrical parameters defining the protection class. Both are packaged in DO-214AC/SMA surface-mount format. The substitutes present lower clamping voltage (162V versus 179V) and reduced peak pulse current (2.5A versus 2.8A). Direct replacement is permissible when the application circuit can tolerate these reduced protection characteristics. Verify that system overvoltage transients do not exceed 162V clamping and that peak pulse currents remain below 2.5A.

Q: What is the difference between SMAJ100CA from MDD and SMAJ100CA-13-F from Diodes Incorporated?

A: Both parts present identical electrical specifications: 162V clamping voltage and 2.5A peak pulse current. The primary difference is operating temperature range. The MDD variant operates from -50°C to 150°C, while the Diodes Incorporated variant operates from -55°C to 150°C. The Diodes Incorporated part provides 5°C additional low-temperature margin. Packaging for SMAJ100CA-13-F is explicitly specified as Tape & Reel (TR), matching the primary part's packaging format.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SMAJ100CE3/TR13, SMAJ100CA, and SMAJ100CA-13-F are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. SMAJ100CA-13-F additionally carries REACH Unaffected status.

Q: What is the significance of the clamping voltage difference between the primary part and substitutes?

A: Clamping voltage is the maximum voltage the TVS diode allows across its terminals during a transient event. The primary part clamps at 179V maximum, while substitutes clamp at 162V maximum. This 17V difference means the protected circuit will experience a lower peak voltage during overvoltage transients when using substitute parts. Selection depends on whether the protected circuit components can tolerate 162V versus 179V. Lower clamping voltage generally provides better protection but requires verification that the substitute's current rating (2.5A) is sufficient for the expected transient energy.

Q: Can I use SMAJ100CA-13-F in tape and reel packaging if my assembly process requires bulk quantities?

A: Yes. SMAJ100CA-13-F is specified with Tape & Reel (TR) packaging, consistent with the primary part SMAJ100CE3/TR13. Inventory availability for SMAJ100CA-13-F is 435,100 pieces, supporting high-volume assembly requirements.

Q: What are the key parameters I must verify before substituting?

A: Verify the following parameters match or exceed your application requirements: (1) Reverse Standoff Voltage: 100V (all parts match); (2) Breakdown Voltage: 111V (all parts match); (3) Clamping Voltage: Confirm your circuit can tolerate 162V if using substitutes versus 179V for the primary part; (4) Peak Pulse Current: Confirm transient currents do not exceed 2.5A if using substitutes versus 2.8A for the primary part; (5) Operating Temperature: Confirm deployment environment falls within -50°C to 150°C (MDD) or -55°C to 150°C (Diodes Inc.) ranges; (6) Package: Confirm DO-214AC/SMA surface-mount format is compatible with your PCB assembly process.