HS1MAL Equivalent & Substitute Parts

Part Overview

The HS1MAL is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 1000 V DC reverse voltage and 1 A average rectified current. This surface mount component features fast recovery characteristics with a reverse recovery time of 75 nanoseconds and is housed in a DO-221AC SMA flat leads package. The part is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level rating.

Substitute parts are identified to provide design flexibility when the primary HS1MAL component is unavailable or when alternative sourcing is required for supply chain optimization. All substitute components maintain electrical and mechanical compatibility within the specified parameter ranges for this rectifier diode category.

Substiute Parts

HS1MAL

Taiwan Semiconductor CorporationIn Stock: 7447HS1MAL Datasheet

Current PartRFQ

US1MAFC_R1_00001

Panjit International Inc.In Stock: 4128US1MAFC_R1_00001 Datasheet

Parametric EquivalentRFQ

US1MF

MDDIn Stock: 125203US1MF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HS1MAL rectifier diode are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 1000 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.7 V @ 1 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Mounting Type: Surface Mount
• Package / Case: DO-221AC, SMA Flat Leads
• Operating Temperature - Junction: -55°C to 150°C

Allowable Parameter Variations: Substitute components may exhibit variations in reverse recovery time (trr), reverse leakage current, and junction capacitance within acceptable ranges for general-purpose rectifier applications. These variations do not compromise functional equivalence in standard circuit applications.

All identified substitutes maintain identical voltage and current ratings, forward voltage characteristics, and thermal operating range as the primary HS1MAL component.

Parameter Comparison

Engineering Selection Recommendations

HS1MAL (Taiwan Semiconductor Corporation) Primary component with Active product status. ROHS3 compliant with REACH unaffected classification. Reverse recovery time of 75 nanoseconds and reverse leakage current of 1 µA @ 1000 V provide baseline performance specifications. Suitable for applications requiring standard fast recovery rectifier characteristics.

US1MAFC_R1_00001 (Panjit International Inc.) Parametric equivalent with Active product status and ROHS3 compliance. Reverse recovery time of 100 nanoseconds represents a 25-nanosecond increase from the primary component but remains within fast recovery classification. Reverse leakage current matches the primary part at 1 µA @ 1000 V. Junction capacitance of 10 pF is marginally elevated. Suitable for general-purpose rectifier applications where the extended recovery time does not impact circuit performance.

US1MF (MDD) Parametric equivalent with Active product status and RoHS compliance. Reverse recovery time of 75 nanoseconds matches the primary component. Reverse leakage current of 5 µA @ 1000 V represents a five-fold increase from the primary part. Junction capacitance of 15 pF is elevated compared to both the primary and first substitute component. Suitable for applications where increased leakage current and capacitance do not compromise circuit operation.

All three components share identical voltage ratings, current ratings, forward voltage characteristics, and thermal operating ranges. Selection among these parts depends on specific application requirements regarding reverse recovery time, leakage current, and junction capacitance performance.

Frequently Asked Questions (FAQ)

Q: Can the US1MAFC_R1_00001 substitute for the HS1MAL in all applications?

A: The US1MAFC_R1_00001 maintains electrical equivalence for voltage, current, and forward voltage specifications. The reverse recovery time of 100 nanoseconds is 25 nanoseconds longer than the HS1MAL but remains within fast recovery classification. Applications sensitive to switching speed may require evaluation of the extended recovery time.

Q: What is the significance of the reverse leakage current difference between HS1MAL and US1MF?

A: The US1MF exhibits reverse leakage current of 5 µA @ 1000 V compared to 1 µA @ 1000 V for the HS1MAL. This five-fold increase may impact applications with stringent leakage specifications or high-impedance circuits. Standard rectifier applications typically accommodate this variation.

Q: Are all substitute parts housed in the same physical package?

A: All three components use the DO-221AC package with SMA flat leads. Physical dimensions and PCB footprints are identical, enabling direct board-level substitution without layout modifications.

Q: Do the substitute parts meet the same compliance standards as the HS1MAL?

A: The HS1MAL and US1MAFC_R1_00001 are both ROHS3 compliant. The US1MF is RoHS compliant. All three components are REACH unaffected and carry EAR99 ECCN classification. Compliance requirements for specific applications should be verified against project specifications.

Q: What is the impact of junction capacitance variation among these parts?

A: Junction capacitance ranges from 8 pF (HS1MAL) to 15 pF (US1MF) at 4 V and 1 MHz. Higher capacitance may affect high-frequency circuit performance or switching characteristics. Applications operating at frequencies where diode capacitance is a design parameter should account for these variations.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. All three components share identical mounting type (surface mount), package designation (DO-221AC, SMA flat leads), and thermal operating range (-55°C to 150°C). Direct substitution is mechanically and thermally compatible.