SMA5C7V5-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The SMA5C7V5-TP is a 7.5 V, 3 W Zener diode manufactured by Micro Commercial Co in the DO-214AC (SMA) surface mount package. This component is classified as obsolete, indicating discontinuation from the manufacturer. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and redesign applications. The substitute part identified maintains the same nominal voltage rating and power dissipation capability while offering improved availability and active product status.

Substiute Parts

SMA5C7V5-TP

Micro Commercial CoIn Stock: 1275SMA5C7V5-TP Datasheet

Current PartRFQ

3SMAJ5922B-TP

Micro Commercial CoIn Stock: 83923SMAJ5922B-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SMA5C7V5-TP with the 3SMAJ5922B-TP is based on the following alignment of critical electrical and mechanical parameters:

Matched Parameters:

• Nominal Zener voltage: 7.5 V (identical)
• Maximum power dissipation: 3 W (identical)
• Package type: DO-214AC (SMA) surface mount (identical)
• Impedance (Max): 3 Ohms (identical)
• RoHS3 compliance: Both parts meet ROHS3 requirements
• Moisture Sensitivity Level: MSL 1 (Unlimited) for both parts

Tolerance Variation: The substitute part features a tighter tolerance specification (±5% versus ±6%), which represents an improvement in voltage regulation accuracy and does not restrict substitution.

Operating Temperature Consideration: The substitute part operates across -55°C ~ 150°C, compared to the main part's -65°C ~ 150°C. The substitute part's lower temperature limit is -55°C, which represents a 10°C reduction at the minimum operating temperature. This parameter difference must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 3SMAJ5922B-TP serves as a direct functional substitute for the obsolete SMA5C7V5-TP based on electrical and mechanical parameter alignment. Both components are manufactured by Micro Commercial Co and maintain identical nominal voltage (7.5 V), power rating (3 W), package type (DO-214AC/SMA), and impedance specifications (3 Ohms maximum).

The substitute part offers the following advantages:

• Active Product Status: The 3SMAJ5922B-TP is in active production, ensuring long-term availability and supply chain continuity.
• Improved Tolerance: The ±5% tolerance specification provides tighter voltage regulation compared to the ±6% tolerance of the main part.
• Regulatory Compliance: Both parts meet ROHS3 requirements and carry identical MSL 1 (Unlimited) moisture sensitivity ratings.

The following parameter differences require evaluation within specific application contexts:

• Operating Temperature Range: The substitute part's minimum operating temperature is -55°C compared to -65°C for the main part. Applications requiring operation below -55°C must retain the original part or identify alternative solutions.
• Forward Voltage: The substitute part exhibits a maximum forward voltage of 1.5 V @ 200 mA, compared to 1.2 V @ 200 mA for the main part. This 0.3 V difference may impact circuits with tight forward bias specifications.
• Reverse Leakage Current: Test conditions differ between parts (1 µA @ 4.5 V versus 5 µA @ 6 V), making direct comparison impractical without normalized data.

Frequently Asked Questions (FAQ)

Q: Can the 3SMAJ5922B-TP directly replace the SMA5C7V5-TP in all applications?

A: The 3SMAJ5922B-TP is electrically and mechanically compatible for most applications. However, applications requiring operation below -55°C or with forward bias specifications tighter than 1.5 V @ 200 mA must be evaluated individually.

Q: What is the significance of the tolerance difference (±6% versus ±5%)?

A: The substitute part's ±5% tolerance is tighter than the main part's ±6% tolerance. This represents improved voltage regulation accuracy and does not restrict substitution; it may enhance circuit performance in voltage regulation applications.

Q: Are both parts in the same physical package?

A: Yes. Both the SMA5C7V5-TP and 3SMAJ5922B-TP use the DO-214AC (SMA) surface mount package, ensuring identical PCB footprint and assembly compatibility.

Q: Why is the operating temperature range different?

A: The substitute part operates from -55°C to 150°C, while the main part operates from -65°C to 150°C. The 10°C difference at the lower temperature limit reflects different design specifications. Applications requiring operation below -55°C must use the original part or identify alternative components.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both parts are ROHS3 compliant and carry identical MSL 1 (Unlimited) moisture sensitivity ratings. Both are classified under ECCN EAR99 and HTSUS 8541.10.0050.

Q: What is the difference in forward voltage specifications?

A: The main part specifies 1.2 V maximum forward voltage at 200 mA, while the substitute specifies 1.5 V maximum at the same current. This 0.3 V difference may affect circuits with forward bias current limiting or precision rectification requirements.

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

A: The substitute part is supplied in Tape & Reel (TR) format, while the main part packaging format is not specified in available data. Both use the DO-214AC (SMA) component package, ensuring assembly compatibility.