HS1FFL Equivalent & Substitute Parts

Part Overview

The HS1FFL is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 300 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123F package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs. The HS1FFL maintains parametric equivalence with select alternatives that meet identical voltage, current, and thermal specifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	300	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 1 A	mV
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	5	µA @ 300 V
Operating Temperature - Junction	-55 to 150	°C
Package / Case	SOD-123F	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the HS1FFL is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 300 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 950 mV @ 1 A
Reverse Recovery Time (trr): 50 ns
Current - Reverse Leakage @ Vr: 5 µA @ 300 V
Operating Temperature - Junction: -55°C to 150°C
Package / Case: SOD-123F
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts meeting all these criteria are classified as parametric equivalents and may be substituted in applications where the HS1FFL is specified, subject to design validation and supply chain requirements.

Parameter Comparison

Parameter	HS1FFL (Taiwan Semiconductor)	NRVUS1FFA (onsemi)
Voltage - DC Reverse (Vr) (Max)	300 V	300 V
Current - Average Rectified (Io)	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 1 A	950 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 300 V	5 µA @ 300 V
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C
Package / Case	SOD-123F	SOD-123F
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Not For New Designs

Engineering Selection Recommendations

HS1FFL (Taiwan Semiconductor Corporation)

The HS1FFL is the primary selection for new designs. This component carries Active product status, indicating full manufacturer support, ongoing production, and availability for long-term supply chain planning. The part is RoHS3 compliant and carries unlimited moisture sensitivity level (MSL 1), suitable for standard manufacturing and storage conditions.

NRVUS1FFA (onsemi)

The NRVUS1FFA is a parametric equivalent alternative classified as Not For New Designs. This designation indicates the manufacturer has discontinued active support for new applications. However, the NRVUS1FFA maintains identical electrical specifications and thermal operating range as the HS1FFL. This part carries AEC-Q101 automotive qualification, indicating suitability for automotive-grade applications where such certification is required. The NRVUS1FFA is appropriate for sustaining production of existing designs or applications where automotive qualification is a design requirement.

Selection Criteria:

New Designs: Select HS1FFL for Active product status and unrestricted manufacturer support.
Automotive Applications: NRVUS1FFA provides AEC-Q101 qualification when automotive-grade certification is specified.
Sustaining Production: NRVUS1FFA is suitable for continuation of existing designs where supply of the original part is constrained.

Frequently Asked Questions (FAQ)

Q: Can NRVUS1FFA be used as a direct replacement for HS1FFL in new designs?

A: NRVUS1FFA meets all electrical and mechanical specifications of HS1FFL. However, NRVUS1FFA carries Not For New Designs status. Selection of NRVUS1FFA for new designs requires documented justification and design review approval.

Q: What is the difference in capacitance between HS1FFL and NRVUS1FFA?

A: HS1FFL specifies 11 pF @ 4V, 1MHz. NRVUS1FFA specifies 20 pF @ 4V, 1MHz. This difference does not affect substitution eligibility for general-purpose rectification applications but may impact high-frequency circuit performance. Circuit-level analysis is required if capacitance is a critical design parameter.

Q: Are both parts compatible with the same PCB footprint?

A: Both HS1FFL and NRVUS1FFA use SOD-123F package with Surface Mount mounting type. PCB footprints are mechanically compatible. Supplier device package designations differ (SOD-123F versus SOD-123FL), but both reference the same industry-standard SOD-123F outline.

Q: What compliance certifications apply to both parts?

A: Both HS1FFL and NRVUS1FFA are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99. NRVUS1FFA carries additional AEC-Q101 automotive qualification. Both parts have unlimited moisture sensitivity level (MSL 1).

Q: Can inventory levels influence part selection?

A: HS1FFL has 1,908 pieces in stock. NRVUS1FFA has 35,400 pieces in stock. Inventory availability is a supply chain consideration but does not alter electrical or mechanical equivalence. Part selection must prioritize design requirements and product status before inventory considerations.

Q: What is the base product number relationship?

A: HS1FFL has base product number HS1F. NRVUS1FFA has base product number NRVUS1. Base product numbers indicate manufacturer product families but do not affect substitution eligibility when electrical specifications are identical.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message