S1AFJ-M3/6A Equivalent & Substitute Parts

Part Overview

The S1AFJ-M3/6A is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode operates at 600V DC reverse voltage with 1A average rectified current and is housed in a DO-221AC (SlimSMA) package. The device is classified as Active product status and complies with RoHS3 and REACH regulations. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical performance characteristics.

Substiute Parts

S1AFJ-M3/6A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1094S1AFJ-M3/6A Datasheet

Current PartRFQ

GS1JAFC_R1_00001

Panjit International Inc.In Stock: 4045GS1JAFC_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S1AFJ-M3/6A are identified based on parametric equivalence across critical electrical and mechanical specifications. The substitution logic is based on the following key parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 600 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
• Speed Classification: Standard Recovery >500ns, > 200mA (Io)
• Operating Temperature - Junction: -55°C to 150°C

Mechanical Equivalence Criteria:

• Mounting Type: Surface Mount
• Package / Case: DO-221AC, SMA Flat Leads
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Compliance Equivalence Criteria:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected
• Product Status: Active

Parts meeting all three equivalence categories are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The GS1JAFC_R1_00001 (Panjit International Inc.) is a parametric equivalent substitute for the S1AFJ-M3/6A (Vishay General Semiconductor - Diodes Division). Both devices meet identical electrical specifications for reverse voltage, average rectified current, forward voltage, and recovery speed characteristics. Both are housed in DO-221AC (SMA Flat Leads) surface mount packages with identical thermal operating ranges and moisture sensitivity classifications.

Both parts maintain Active product status and comply with RoHS3 and REACH regulatory requirements. The GS1JAFC_R1_00001 demonstrates superior performance in reverse leakage current (1 µA versus 5 µA at 600V) and lower junction capacitance (7 pF versus 7.9 pF at 4V, 1MHz), characteristics that do not compromise substitution eligibility but may provide operational advantages in specific circuit applications.

Selection between these parts is determined by availability, procurement lead time, inventory levels, and supplier preference. Both parts are suitable for direct substitution in applications designed for the S1AFJ-M3/6A without circuit modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can the GS1JAFC_R1_00001 be used as a direct replacement for the S1AFJ-M3/6A?

A: Yes. The GS1JAFC_R1_00001 is a parametric equivalent with identical voltage rating (600V), current rating (1A), forward voltage drop (1.1V @ 1A), recovery speed classification, and package configuration (DO-221AC, SMA Flat Leads). Both devices operate across the same temperature range (-55°C to 150°C) and meet identical compliance standards (RoHS3, REACH).

Q: Are there package compatibility concerns between these parts?

A: No. Both the S1AFJ-M3/6A and GS1JAFC_R1_00001 use the DO-221AC (SMA Flat Leads) surface mount package. The mechanical footprint, lead spacing, and solder pad configuration are identical. No PCB layout modifications are required for substitution.

Q: What is the difference in reverse leakage current between these parts?

A: The S1AFJ-M3/6A specifies 5 µA reverse leakage at 600V, while the GS1JAFC_R1_00001 specifies 1 µA at the same conditions. The GS1JAFC_R1_00001 exhibits lower leakage current, which may reduce standby power consumption in applications with sustained reverse bias conditions.

Q: Do both parts have the same moisture sensitivity classification?

A: Yes. Both parts are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply to both devices without special desiccant or humidity control requirements.

Q: Are both parts currently in active production?

A: Yes. Both the S1AFJ-M3/6A and GS1JAFC_R1_00001 maintain Active product status with manufacturers. Both are available through authorized distributors with established supply chains.

Q: What is the difference in junction capacitance between these parts?

A: The S1AFJ-M3/6A specifies 7.9 pF at 4V and 1MHz, while the GS1JAFC_R1_00001 specifies 7 pF under identical conditions. The lower capacitance of the GS1JAFC_R1_00001 may provide marginal benefits in high-frequency switching applications, though both values are within standard operating parameters for general-purpose rectifier applications.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. Both parts meet identical electrical and mechanical specifications for the DO-221AC surface mount rectifier category. No design changes, circuit modifications, or re-qualification testing are required for substitution between these parts.