HS1KAL Equivalent & Substitute Parts

Part Overview

The HS1KAL is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 800V DC reverse voltage and 1A 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 and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

HS1KAL

Taiwan Semiconductor CorporationIn Stock: 6997HS1KAL Datasheet

Current PartRFQ

US1KAFC_R1_00001

Panjit International Inc.In Stock: 3935US1KAFC_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HS1KAL are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are:

Primary Equivalence Parameters:

• Voltage - DC Reverse (Vr) (Max): 800 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.7 V @ 1 A
• Mounting Type: Surface Mount
• Package / Case: DO-221AC, SMA Flat Leads
• Operating Temperature - Junction: -55°C to 150°C
• RoHS Status: ROHS3 Compliant

The substitute part US1KAFC_R1_00001 meets all primary equivalence parameters. Minor variations in reverse recovery time (100 ns versus 75 ns) and junction capacitance (10 pF versus 8 pF) remain within acceptable tolerance ranges for general-purpose rectifier applications and do not preclude functional substitution.

Parameter Comparison

Engineering Selection Recommendations

Both the HS1KAL and US1KAFC_R1_00001 are Active product status components with ROHS3 compliance and REACH Unaffected designation, making them suitable for equivalent selection in applications requiring regulatory compliance. The HS1KAL maintains 6982 pieces in stock inventory, while the substitute US1KAFC_R1_00001 has 3829 pieces available. Selection between these parts is determined by availability, supply chain requirements, and design flexibility. Both components satisfy identical electrical ratings and mechanical package specifications for general-purpose 800V, 1A rectifier applications.

Frequently Asked Questions (FAQ)

Q: Can US1KAFC_R1_00001 be used as a direct replacement for HS1KAL?

A: Yes. Both parts share identical voltage ratings (800V), current ratings (1A), forward voltage characteristics (1.7V @ 1A), package type (DO-221AC, SMA Flat Leads), and operating temperature range (-55°C to 150°C). Both are ROHS3 compliant and REACH Unaffected.

Q: What is the difference in reverse recovery time between these parts?

A: The HS1KAL has a reverse recovery time of 75 ns, while the US1KAFC_R1_00001 has 100 ns. Both remain within the Fast Recovery classification (≤ 500ns, > 200mA). This difference does not affect substitution eligibility for general-purpose rectifier applications.

Q: Are the package dimensions identical?

A: Both parts use the DO-221AC package with SMA Flat Leads. The mechanical compatibility is equivalent for PCB assembly and mounting.

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

A: Yes. Both the HS1KAL and US1KAFC_R1_00001 have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.

Q: Which part should be selected for new designs?

A: Selection is based on availability and supply chain strategy. Both parts meet identical electrical and mechanical specifications. The HS1KAL currently has higher inventory (6982 pcs), while US1KAFC_R1_00001 provides an alternative source (3829 pcs).