SL42-M3/9AT Equivalent & Substitute Parts

Part Overview

The SL42-M3/9AT is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 20V DC reverse voltage and 4A average rectified current in a surface mount DO-214AB (SMC) package. This component is classified as Active and maintains full RoHS3 compliance with REACH Unaffected status. Substitute parts are identified when packaging format differs while maintaining identical electrical performance specifications, allowing procurement flexibility and inventory optimization across equivalent tape and reel configurations.

Substiute Parts

SL42-M3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 888SL42-M3/9AT Datasheet

Current PartRFQ

SL42-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 10495SL42-E3/57T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SL42-M3/9AT is determined by equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 20V
• Current - Average Rectified (Io): 4A
• Voltage - Forward (Vf) (Max) @ If: 420 mV @ 4A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 500 µA @ 20V

Mechanical Equivalence Criteria:

• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C to 125°C

Compliance Equivalence Criteria:

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

The SL42-E3/57T qualifies as a parametric equivalent substitute based on identical electrical specifications, mechanical compatibility, and regulatory compliance. The distinction between these parts is limited to packaging format: SL42-M3/9AT is supplied in Tape & Reel (TR) format, while SL42-E3/57T is supplied in Cut Tape (CT) format. Both parts share the same base product number (SL42) and are manufactured by the same supplier.

Parameter Comparison

Engineering Selection Recommendations

Both SL42-M3/9AT and SL42-E3/57T are Active products with identical electrical and mechanical specifications. Selection between these parts is determined by packaging and supply chain requirements:

SL42-M3/9AT (Tape & Reel Format): Suitable for high-volume automated assembly operations requiring continuous reel-fed component placement. Current inventory: 862 pieces.

SL42-E3/57T (Cut Tape Format): Suitable for lower-volume applications, manual assembly processes, or situations requiring smaller quantity dispensing. Current inventory: 10,400 pieces.

Both parts maintain full compliance with RoHS3 and REACH regulations. Moisture Sensitivity Level 1 (Unlimited) indicates no special storage or handling requirements beyond standard component care. Operating temperature range of -55°C to 125°C supports industrial and commercial applications without thermal derating considerations within this range.

Frequently Asked Questions (FAQ)

Q: Can SL42-E3/57T be used as a direct replacement for SL42-M3/9AT in production assembly?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Cut Tape versus Tape & Reel). Compatibility depends on assembly equipment capability to handle the specific packaging format. Verify that your pick-and-place or manual assembly process supports Cut Tape (CT) format if substituting from Tape & Reel (TR).

Q: Are there any performance differences between these two part numbers?

A: No. Both parts share identical electrical specifications: 20V reverse voltage rating, 4A average rectified current, 420 mV forward voltage drop at 4A, and fast recovery characteristics. Thermal performance and leakage current specifications are also identical.

Q: What is the significance of the different packaging codes (M3/9AT versus E3/57T)?

A: The packaging codes indicate different supplier tape and reel configurations. M3/9AT denotes Tape & Reel format with specific tape specifications. E3/57T denotes Cut Tape format. The electrical and mechanical performance of the diode itself remains unchanged.

Q: Do both parts require the same PCB footprint and solder pad layout?

A: Yes. Both parts use the DO-214AB (SMC) package, which defines identical physical dimensions and lead spacing. PCB footprints and solder pad layouts are interchangeable.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited). Regulatory and environmental compliance is equivalent.

Q: Which part should be selected for new designs?

A: Selection is based on manufacturing process requirements. For automated high-volume production, Tape & Reel format (SL42-M3/9AT) is standard. For lower volumes or manual assembly, Cut Tape format (SL42-E3/57T) may be more practical. Both are equally suitable from an electrical and reliability standpoint.

Q: Is there a cost difference between these packaging formats?

A: Packaging format pricing is determined by supplier and volume. This reference provides electrical and mechanical equivalence only; procurement pricing is outside the scope of this technical comparison.