SMA5C36-TP Equivalent & Substitute Parts

Part Overview

The SMA5C36-TP is a Zener diode rated at 36 V nominal with 3 W maximum power dissipation in a surface mount DO-214AC (SMA) package. Manufactured by Micro Commercial Co, this component is classified as obsolete product status. Due to its obsolete designation, locating equivalent substitute parts with compatible electrical and mechanical specifications is necessary for ongoing design support and production continuity. The substitute part identified maintains the same voltage rating, power rating, and package form factor while offering active product status and improved availability.

Substiute Parts

SMA5C36-TP

Micro Commercial CoIn Stock: 1217SMA5C36-TP Datasheet

Current PartRFQ

3SMAJ5938B-TP

Micro Commercial CoIn Stock: 69023SMAJ5938B-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMA5C36-TP with the 3SMAJ5938B-TP is based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Voltage - Zener (Nom): Both rated at 36 V
• Power - Max: Both rated at 3 W
• Package / Case: Both use DO-214AC (SMA) surface mount package
• Mounting Type: Both are surface mount components
• RoHS Status: Both are ROHS3 Compliant
• Moisture Sensitivity Level: Both rated MSL 1 (Unlimited)

Tolerance Variation: The substitute part features ±5% tolerance compared to the main part's ±5.56% tolerance. This represents a tighter tolerance specification, making the substitute acceptable for applications requiring the main part's tolerance or better.

Temperature Range Consideration: The substitute part operates across -55°C ~ 150°C, compared to the main part's -65°C ~ 150°C. The substitute provides a narrower lower temperature bound by 10°C.

Impedance and Leakage Characteristics: The substitute part exhibits 38 Ohms maximum impedance versus 40 Ohms for the main part, and specifies 1 µA reverse leakage at 27.4 V versus 500 nA at 27 V for the main part. Both values remain within acceptable operating parameters for 36 V Zener diode applications.

Parameter Comparison

Engineering Selection Recommendations

The 3SMAJ5938B-TP serves as a direct substitute for the obsolete SMA5C36-TP based on electrical and mechanical compatibility. The substitute part is manufactured by the same supplier and maintains identical voltage and power ratings with the same surface mount package footprint.

Product Status Advantage: The substitute part carries active product status, ensuring continued availability and manufacturing support. The main part's obsolete designation creates supply chain risk and limits long-term sourcing options.

Compliance Alignment: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage protocols.

Parameter Tolerances: The substitute part's ±5% tolerance is tighter than the main part's ±5.56% tolerance, providing improved voltage regulation characteristics. This represents an enhancement rather than a compromise for voltage-critical applications.

Temperature Operating Range: Applications requiring operation below -55°C must retain the original SMA5C36-TP. For applications within the -55°C ~ 150°C range, the substitute part is fully compatible.

Forward Voltage Consideration: The substitute part specifies 1.5 V maximum forward voltage at 200 mA compared to 1.2 V for the main part. This 0.3 V difference must be evaluated in circuits where forward conduction characteristics directly impact performance.

Frequently Asked Questions (FAQ)

Q: Can the 3SMAJ5938B-TP replace the SMA5C36-TP in all applications?

A: The 3SMAJ5938B-TP is electrically and mechanically compatible for applications operating within the -55°C ~ 150°C temperature range. Applications requiring operation below -55°C require the original SMA5C36-TP due to its extended lower temperature specification of -65°C.

Q: What is the significance of the tolerance difference between ±5.56% and ±5%?

A: The substitute part's ±5% tolerance is tighter, meaning the actual Zener voltage will remain closer to the 36 V nominal specification. For voltage regulation applications, this represents improved performance. Both tolerances are acceptable for standard 36 V Zener diode applications.

Q: Are the package dimensions identical between both parts?

A: Both parts use the DO-214AC (SMA) surface mount package. The physical footprint and land pattern are identical, allowing direct PCB layout compatibility without redesign.

Q: Why does the substitute part show higher reverse leakage current?

A: The substitute part specifies 1 µA reverse leakage at 27.4 V compared to 500 nA at 27 V for the main part. Both values are within acceptable operating parameters for 36 V Zener diodes. The measurement conditions differ slightly (27.4 V versus 27 V), which accounts for part of this difference.

Q: What is the impact of the 0.3 V forward voltage difference?

A: The substitute part specifies 1.5 V maximum forward voltage at 200 mA versus 1.2 V for the main part. In forward-biased applications, this represents a 25% increase in voltage drop. Circuits sensitive to forward voltage characteristics must evaluate this parameter against design requirements.

Q: Is the substitute part available in the same packaging format?

A: The substitute part is supplied in Tape & Reel (TR) packaging, while the main part packaging format is not specified. Both use identical DO-214AC (SMA) component packages suitable for automated assembly. Verify tape and reel specifications with your procurement requirements.

Q: What is the impedance difference between the two parts?

A: The substitute part specifies 38 Ohms maximum impedance compared to 40 Ohms for the main part. This 2 Ohm difference represents improved impedance characteristics and does not impact substitution compatibility.