S1DALH Equivalent & Substitute Parts

Part Overview

The S1DALH is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, classified as a surface mount thin SMA package component. This diode is designed for standard rectification applications requiring 200 V reverse voltage rating and 1 A average rectified current capacity. The part maintains Active product status and carries AEC-Q101 automotive qualification, making it suitable for automotive and industrial applications. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications where the primary part number may have limited availability or extended lead times.

Substiute Parts

S1DALH

Taiwan Semiconductor CorporationIn Stock: 3493S1DALH Datasheet

Current PartRFQ

S1DAL

Taiwan Semiconductor CorporationIn Stock: 7937S1DAL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S1DALH is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part S1DAL is classified as a parametric equivalent based on matching specifications in the following key areas:

Electrical Parameters (Must Match Exactly):

• Voltage - DC Reverse (Vr) (Max): 200 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 @ 200 V
• Capacitance @ Vr, F: 8 pF @ 4V, 1MHz

Mechanical Parameters (Must Match Exactly):

• Package / Case: DO-221AC, SMA Flat Leads
• Mounting Type: Surface Mount
• Supplier Device Package: Thin SMA

Compliance & Certification (Must Match Exactly):

• RoHS Status: ROHS3 Compliant
• Qualification: AEC-Q101
• Operating Temperature - Junction: -55°C to 150°C

Parameter Comparison

Engineering Selection Recommendations

The S1DAL is a direct parametric equivalent to the S1DALH and is suitable for substitution in applications where the primary part number is unavailable. Both parts are manufactured by Taiwan Semiconductor Corporation and carry identical electrical specifications, mechanical packaging, and compliance certifications.

Selection Basis:

Both the S1DALH and S1DAL maintain Active product status, ensuring continued manufacturing support and supply availability. Both parts carry AEC-Q101 automotive qualification, confirming suitability for automotive-grade applications. Both parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for industrial and consumer applications.

The identical electrical parameters across reverse voltage rating, forward voltage drop, rectified current capacity, recovery speed, reverse leakage current, and junction capacitance ensure functional interchangeability in circuit designs. The matching DO-221AC SMA flat lead package and surface mount mounting type confirm mechanical and assembly compatibility without requiring PCB layout modifications.

The Moisture Sensitivity Level (MSL) rating of 1 (Unlimited) for both parts indicates no moisture-related handling restrictions during storage, transport, or assembly processes.

Frequently Asked Questions (FAQ)

Q: Can S1DAL be used as a direct replacement for S1DALH in production assemblies?

A: Yes. The S1DAL is a parametric equivalent with identical electrical specifications, package configuration, and compliance certifications. No circuit modifications or PCB layout changes are required for substitution.

Q: Are there any differences in forward voltage drop between S1DALH and S1DAL?

A: No. Both parts specify a maximum forward voltage of 1.1 V at 1 A forward current. Forward voltage characteristics are identical.

Q: Do both parts support the same operating temperature range?

A: Yes. Both S1DALH and S1DAL operate across a junction temperature range of -55°C to 150°C, providing identical thermal performance specifications.

Q: Is the package footprint identical between S1DALH and S1DAL?

A: Yes. Both parts use the DO-221AC SMA flat lead package with thin SMA supplier device packaging. PCB footprints and assembly processes are identical.

Q: Are both parts qualified for automotive applications?

A: Yes. Both S1DALH and S1DAL carry AEC-Q101 automotive qualification, confirming suitability for automotive-grade circuit designs and manufacturing environments.

Q: What is the reverse leakage current specification for both parts?

A: Both parts specify a maximum reverse leakage current of 1 µA at 200 V reverse voltage, indicating identical leakage performance.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both S1DALH and S1DAL are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for industrial applications.

Q: Is there a difference in recovery speed between the two parts?

A: No. Both parts specify standard recovery characteristics with recovery time greater than 500 ns at forward currents exceeding 200 mA.

Q: What is the capacitance specification for both parts?

A: Both parts specify a junction capacitance of 8 pF measured at 4 V reverse voltage and 1 MHz frequency.

Q: Are there any moisture sensitivity concerns with either part?

A: No. Both parts carry a Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture-related handling restrictions during storage, transport, or assembly.