HS1FL Equivalent & Substitute Parts

Part Overview

The HS1FL is a fast recovery rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 300V DC reverse voltage and 1A average rectified current. This surface mount component features a 50ns reverse recovery time and is packaged in SOD-123 form factor. The HS1FL carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line. Identification of equivalent substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where the original component specification must be maintained or exceeded.

Substiute Parts

HS1FL

Taiwan Semiconductor CorporationIn Stock: 755HS1FL Datasheet

Current PartRFQ

HS1GLW

Taiwan Semiconductor CorporationIn Stock: 20683HS1GLW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HS1FL is determined by the following critical electrical and mechanical parameters:

Mandatory Compatibility Criteria:

• Reverse voltage rating must equal or exceed 300V
• Average rectified current must equal or exceed 1A
• Reverse recovery time must equal or exceed 50ns performance (≤500ns specification)
• Mounting type must be Surface Mount
• Package form factor must be compatible with SOD-123 or equivalent footprint
• Operating temperature range must encompass the application requirements

Substitution Logic: The HS1GLW qualifies as a direct substitute because it meets or exceeds all mandatory parameters while maintaining identical mounting technology and compatible package geometry. The HS1GLW provides enhanced voltage rating (400V vs. 300V), maintains identical current rating (1A), preserves reverse recovery time specification (50ns), and operates across an extended temperature range (-55°C to 175°C vs. -55°C to 150°C).

Parameter Comparison

Engineering Selection Recommendations

HS1GLW as Primary Substitute:

The HS1GLW is the manufacturer-recommended substitute for the HS1FL. Selection of the HS1GLW is supported by the following factors:

1. Product Status Alignment: The HS1GLW carries Active product status, ensuring continued availability and manufacturing support, whereas the HS1FL is designated Not For New Designs.

2. Regulatory Compliance: Both components maintain ROHS3 compliance and REACH Unaffected status, satisfying environmental and regulatory requirements without modification to procurement or assembly processes.

3. Electrical Performance: The HS1GLW provides enhanced reverse voltage capability (400V vs. 300V), delivering improved margin in applications operating near the HS1FL's 300V rating. Reverse recovery time remains identical at 50ns, preserving switching performance characteristics.

4. Thermal Performance: Extended maximum junction temperature rating (175°C vs. 150°C) provides additional thermal margin in high-temperature operating environments.

5. Package Compatibility: SOD-123W package maintains mechanical compatibility with SOD-123 footprints in standard PCB layouts, enabling direct substitution without redesign.

Forward Voltage Consideration:

The HS1GLW exhibits higher forward voltage (1.7V @ 1A) compared to the HS1FL (950mV @ 1A). In applications where forward voltage drop directly impacts circuit performance or power dissipation budgets, this parameter difference must be evaluated against system-level requirements.

Frequently Asked Questions (FAQ)

Q: Can the HS1GLW directly replace the HS1FL without PCB modification?

A: Yes. The HS1GLW is packaged in SOD-123W, which maintains mechanical and electrical footprint compatibility with SOD-123 PCB layouts. No redesign is required for direct substitution.

Q: What is the significance of the higher reverse voltage rating on the HS1GLW?

A: The HS1GLW's 400V rating exceeds the HS1FL's 300V specification, providing additional safety margin in circuits operating at or near 300V. This enhanced rating does not degrade performance in applications designed for 300V operation.

Q: Does the forward voltage difference between HS1FL and HS1GLW affect circuit operation?

A: Forward voltage difference (950mV vs. 1.7V @ 1A) impacts power dissipation and voltage drop across the diode. Applications sensitive to forward voltage characteristics must evaluate this parameter against circuit design specifications. In most rectification applications, this difference is accommodated within normal design tolerances.

Q: Are both components compliant with current environmental regulations?

A: Yes. Both the HS1FL and HS1GLW are ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component procurement and assembly.

Q: Why is the HS1FL marked "Not For New Designs"?

A: The "Not For New Designs" designation indicates the manufacturer has transitioned this component to end-of-life status in favor of the HS1GLW. New product development should specify the HS1GLW. Existing applications using the HS1FL may continue with the substitute for ongoing production and maintenance.

Q: What is the difference between SOD-123 and SOD-123W packages?

A: SOD-123W is a wider variant of the SOD-123 package, maintaining identical lead pitch and footprint compatibility while providing enhanced thermal and mechanical characteristics. Both packages are surface mount configurations suitable for automated assembly.

Q: Can the HS1GLW be used in applications originally designed for 300V operation?

A: Yes. The HS1GLW's 400V rating is fully compatible with 300V applications, as it exceeds the original specification. The component operates safely and reliably at or below its rated voltage.