S1KALH Equivalent & Substitute Parts

Part Overview

The S1KALH is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, classified within the Diodes, Rectifiers category. This surface mount component operates at 800 V DC reverse voltage with 1 A average rectified current capacity. The part is actively produced and maintains AEC-Q101 automotive qualification status. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required for circuit design flexibility, inventory management, or supply chain continuity.

Substiute Parts

S1KALH

Taiwan Semiconductor CorporationIn Stock: 8171S1KALH Datasheet

Current PartRFQ

S1KAL

Taiwan Semiconductor CorporationIn Stock: 7912S1KAL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S1KALH are identified based on strict electrical and mechanical parameter equivalence. The substitution logic is based on the following criteria:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 800 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
• Speed: Standard Recovery >500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 1 µA @ 800 V
• Capacitance @ Vr, F: 8 pF @ 4V, 1MHz

Mechanical Parameters (Must Match):

• Package / Case: DO-221AC, SMA Flat Leads
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C ~ 150°C

Compliance & Qualification (Must Match):

• RoHS Status: ROHS3 Compliant
• Qualification: AEC-Q101

Parts meeting all specified parameters are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The S1KAL part number is a direct parametric equivalent to the S1KALH. Both components share identical electrical specifications, mechanical packaging, and compliance certifications. Selection between these parts is determined by availability and supply chain requirements rather than technical performance differences.

Both parts maintain Active product status, ensuring continued manufacturing support and supply availability. AEC-Q101 qualification confirms automotive-grade reliability standards. ROHS3 compliance and REACH Unaffected status satisfy environmental and regulatory requirements for industrial and automotive applications.

The Thin SMA package (DO-221AC) with SMA Flat Leads provides consistent PCB assembly compatibility across both part numbers. Operating temperature range of -55°C to 150°C junction temperature supports extended environmental applications.

Frequently Asked Questions (FAQ)

Q: Can S1KAL be used as a direct replacement for S1KALH?

A: Yes. S1KAL is a parametric equivalent with identical electrical ratings (800 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage), identical package configuration (DO-221AC, SMA Flat Leads), and identical compliance certifications (AEC-Q101, ROHS3 Compliant).

Q: Are there differences in thermal performance between S1KALH and S1KAL?

A: No. Both parts share identical operating temperature range (-55°C to 150°C junction temperature) and identical reverse leakage current specifications (1 µA @ 800 V).

Q: Do both parts have the same PCB footprint?

A: Yes. Both S1KALH and S1KAL use the DO-221AC package with SMA Flat Leads, ensuring identical surface mount footprint compatibility.

Q: Are both parts qualified for automotive applications?

A: Yes. Both S1KALH and S1KAL carry AEC-Q101 automotive qualification, confirming suitability for automotive-grade circuit designs.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.

Q: Are there any compliance differences between the two part numbers?

A: No. Both parts are ROHS3 Compliant and REACH Unaffected, meeting identical environmental and regulatory standards.