S1KAL General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The S1KAL is an active general purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 800V DC reverse voltage with 1A average rectified current. This surface mount component is packaged in a Thin SMA (DO-221AC) configuration and is designed for standard recovery applications. The part is ROHS3 compliant and carries unlimited moisture sensitivity classification (MSL 1), making it suitable for standard industrial and commercial applications. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

S1KAL

Taiwan Semiconductor CorporationIn Stock: 7912S1KAL Datasheet

Current PartRFQ

S1KALH

Taiwan Semiconductor CorporationIn Stock: 8171S1KALH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S1KAL is determined by strict equivalence across the following critical parameters:

• Reverse Voltage Rating: 800V maximum DC reverse voltage
• Forward Current Rating: 1A average rectified current
• Forward Voltage Drop: 1.1V maximum at 1A
• Recovery Characteristics: Standard recovery with >500ns recovery time at >200mA
• Reverse Leakage Current: 1µA maximum at 800V
• Junction Capacitance: 8pF at 4V, 1MHz
• Package Configuration: DO-221AC Thin SMA with flat leads
• Mounting Technology: Surface mount
• Temperature Range: -55°C to 150°C junction operating range
• Regulatory Compliance: ROHS3 compliance required

The S1KALH is identified as a parametric equivalent substitute. Both parts share identical electrical specifications and mechanical packaging. The S1KALH carries additional automotive-grade qualification (AEC-Q101) and is designated for automotive applications, but maintains full compatibility with standard industrial applications through identical core electrical and thermal parameters.

Parameter Comparison

Engineering Selection Recommendations

Both S1KAL and S1KALH are active products from Taiwan Semiconductor Corporation with full ROHS3 compliance and identical electrical performance specifications. Selection between these parts is determined by application requirements and supply chain considerations:

S1KAL is appropriate for standard industrial and commercial applications where automotive qualification is not required. Current inventory is 7884 pieces.

S1KALH carries AEC-Q101 automotive qualification and is suitable for automotive-grade applications. This part maintains identical electrical and thermal characteristics to the S1KAL while meeting additional automotive reliability standards. Current inventory is 8069 pieces.

Both parts are manufactured in Thin SMA packaging with surface mount configuration, operate across the identical temperature range of -55°C to 150°C junction temperature, and exhibit the same forward voltage drop, reverse voltage rating, and recovery characteristics. Selection may be based on application classification, supply availability, or procurement specifications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can S1KALH be used as a direct replacement for S1KAL in standard industrial applications?

A: Yes. The S1KALH maintains identical electrical specifications, thermal ratings, and mechanical packaging to the S1KAL. The automotive-grade qualification (AEC-Q101) of the S1KALH does not restrict its use in standard applications; it represents an additional qualification level. Direct substitution is electrically and mechanically valid.

Q: What is the difference between S1KAL and S1KALH?

A: The primary difference is qualification level. The S1KALH carries AEC-Q101 automotive qualification, while the S1KAL is standard grade. All electrical parameters, thermal characteristics, package configuration, and compliance certifications (ROHS3, REACH) are identical between the two parts.

Q: Are both parts available in the same packaging?

A: Yes. Both S1KAL and S1KALH are supplied in DO-221AC Thin SMA packaging with flat leads, configured for surface mount assembly. Mechanical compatibility is complete.

Q: What is the operating temperature range for these diodes?

A: Both parts operate across a junction temperature range of -55°C to 150°C, providing coverage for standard industrial and automotive temperature environments.

Q: Do these parts require special handling or storage?

A: Both parts carry Moisture Sensitivity Level (MSL) 1, classified as unlimited moisture sensitivity. Standard component handling and storage procedures are applicable without special moisture control requirements.

Q: Are both parts ROHS3 compliant?

A: Yes. Both S1KAL and S1KALH are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the maximum reverse voltage rating?

A: Both parts are rated for 800V maximum DC reverse voltage, with maximum reverse leakage current of 1µA at this voltage.

Q: What is the forward voltage drop specification?

A: Both parts specify a maximum forward voltage drop of 1.1V when conducting 1A forward current.