S1MAL Equivalent & Substitute Parts

Part Overview

The S1MAL is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 1000 V DC reverse voltage and 1 A average rectified current in a surface mount Thin SMA package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and packaging specifications are maintained across alternative manufacturer part numbers or grades within the same product family.

Substiute Parts

S1MAL

Taiwan Semiconductor CorporationIn Stock: 8014S1MAL Datasheet

Current PartRFQ

S1MALH

Taiwan Semiconductor CorporationIn Stock: 55047S1MALH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S1MAL is determined by equivalence across the following critical parameters: voltage rating (1000 V DC reverse), current rating (1 A average rectified), forward voltage drop (1.1 V @ 1 A), reverse leakage current (1 µA @ 1000 V), recovery speed (Standard >500ns), junction capacitance (8 pF @ 4V, 1MHz), package type (DO-221AC, SMA Flat Leads), and thermal operating range (-55°C to 150°C). The substitute part S1MALH maintains identical electrical specifications and mechanical compatibility while introducing automotive-grade qualification (AEC-Q101) as an additional feature. Both parts share the same base product number (S1MA) and comply with RoHS3 and REACH requirements.

Parameter Comparison

Engineering Selection Recommendations

The S1MAL and S1MALH are electrically and mechanically equivalent general-purpose rectifier diodes. Selection between these parts is based on application requirements and compliance certifications. The S1MAL is suitable for standard industrial and commercial applications requiring 1000 V, 1 A rectification in a surface mount Thin SMA package. The S1MALH provides the same electrical performance with automotive-grade qualification (AEC-Q101), making it appropriate for automotive and mission-critical applications where enhanced reliability and qualification standards are mandated. Both parts are RoHS3 compliant, REACH unaffected, and maintain unlimited moisture sensitivity classification (MSL 1). Inventory availability should be considered in component procurement decisions.

Frequently Asked Questions (FAQ)

Q: Can S1MALH be used as a direct replacement for S1MAL?

A: Yes. The S1MALH maintains identical electrical specifications (1000 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage drop, 1 µA reverse leakage) and mechanical compatibility (DO-221AC, SMA Flat Leads package, surface mount). The S1MALH includes automotive-grade qualification (AEC-Q101) as an additional feature.

Q: What is the primary difference between S1MAL and S1MALH?

A: The S1MALH is qualified to AEC-Q101 automotive standards, while the S1MAL is specified as standard grade. All electrical parameters, thermal operating range (-55°C to 150°C), and package specifications are identical.

Q: Are both parts suitable for high-temperature applications?

A: Yes. Both S1MAL and S1MALH operate across a junction temperature range of -55°C to 150°C, supporting high-temperature circuit requirements within this range.

Q: Do these parts require different PCB footprints?

A: No. Both parts use the DO-221AC, SMA Flat Leads package with surface mount mounting type, requiring identical PCB footprints and assembly processes.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts are RoHS3 compliant and REACH unaffected. The S1MALH carries additional AEC-Q101 automotive qualification. Both maintain MSL 1 (Unlimited) moisture sensitivity classification.

Q: What recovery speed specification applies to both parts?

A: Both S1MAL and S1MALH are specified as Standard Recovery with >500 ns recovery time at >200 mA (Io) forward current.