1SMA130Z Zener Diode Equivalent & Substitute Parts

Part Overview

The 1SMA130Z is an active-status zener diode manufactured by Taiwan Semiconductor Corporation, rated for 130 V nominal zener voltage with 1.25 W maximum power dissipation in a surface mount DO-214AC (SMA) package. This component is designed for voltage regulation and transient protection applications requiring surface mount integration. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within specified parameter tolerances, enabling design flexibility and supply chain optimization.

Substiute Parts

1SMA130Z

Taiwan Semiconductor CorporationIn Stock: 10311SMA130Z Datasheet

Current PartRFQ

3SMAJ5952B-TP

Micro Commercial CoIn Stock: 1086753SMAJ5952B-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1SMA130Z is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - Zener (Nom): 130 V (exact match required)
• Tolerance: ±5% (matching specification)
• Current - Reverse Leakage @ Vr: 1 µA @ 98.8 V (matching specification)

Mechanical Compatibility Criteria:

• Package / Case: DO-214AC (SMA) (identical footprint and lead configuration)
• Mounting Type: Surface Mount (identical assembly process)

Regulatory & Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 3SMAJ5952B-TP meets all electrical equivalence and mechanical compatibility requirements. Differences in maximum power rating (3 W vs. 1.25 W) and impedance characteristics represent enhanced performance capabilities that do not preclude substitution in applications designed for the 1SMA130Z.

Parameter Comparison

Engineering Selection Recommendations

1SMA130Z Selection Criteria:

• Primary choice when maximum operating temperature of 175°C is required
• Specified when 1.25 W power dissipation ceiling is a design constraint
• Selected when higher impedance (700 Ohms) is functionally required

3SMAJ5952B-TP Selection Criteria:

• Suitable for applications where operating temperature does not exceed 150°C
• Applicable when higher power dissipation capability (3 W) provides design margin
• Acceptable when lower impedance (450 Ohms) is compatible with circuit requirements
• Preferred when supply availability or lead time favors this part number

Both parts maintain ROHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity rating. Selection between these parts is determined by specific application thermal and power requirements within the stated operating temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can 3SMAJ5952B-TP be used as a direct replacement for 1SMA130Z?

A: Yes, 3SMAJ5952B-TP is electrically and mechanically compatible with 1SMA130Z for applications operating at or below 150°C. Both parts share identical zener voltage (130 V), tolerance (±5%), reverse leakage current (1 µA @ 98.8 V), and DO-214AC package configuration. The substitute part provides higher power rating (3 W vs. 1.25 W) and lower impedance (450 Ohms vs. 700 Ohms).

Q: What is the impact of the 25°C difference in maximum operating temperature?

A: The 1SMA130Z operates to 175°C while 3SMAJ5952B-TP operates to 150°C. Applications requiring sustained operation above 150°C must use 1SMA130Z. For applications with maximum junction temperatures at or below 150°C, both parts are functionally equivalent.

Q: Does the higher power rating of 3SMAJ5952B-TP affect circuit compatibility?

A: No. The 3 W maximum power rating of 3SMAJ5952B-TP exceeds the 1.25 W specification of 1SMA130Z, providing additional thermal margin. This characteristic does not create incompatibility; it represents enhanced performance capability. Circuit operation remains unchanged when the substitute part is used in applications designed for 1.25 W dissipation.

Q: Are the impedance differences significant for circuit performance?

A: The 3SMAJ5952B-TP impedance of 450 Ohms is lower than the 1SMA130Z impedance of 700 Ohms. This difference affects transient response characteristics. Applications sensitive to impedance specifications must verify that 450 Ohms is acceptable for the intended circuit function.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both 1SMA130Z and 3SMAJ5952B-TP are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. No regulatory or compliance differences exist between these parts.

Q: Is the DO-214AC package identical for both parts?

A: Yes. Both parts use the DO-214AC (SMA) surface mount package with identical footprint, lead configuration, and assembly requirements. No PCB layout or reflow process modifications are necessary when substituting between these parts.