ES1GFS Equivalent & Substitute Parts

Part Overview

The ES1GFS is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-128 package. This component is classified as a fast recovery diode with a reverse recovery time of 35 ns, suitable for standard rectification applications requiring moderate switching speeds. The part maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity. Substitute diodes must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating variations in recovery characteristics and leakage parameters within acceptable application tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 1	V @ A
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	1	µA @ 400 V
Capacitance @ Vr, F	16	pF @ 4V, 1MHz
Package / Case	SOD-128	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ES1GFS rectifier diode is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A
Package / Case: SOD-128
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C to 150°C
Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Allowable Parameter Variations: Substitute parts may exhibit differences in reverse recovery time (trr), reverse leakage current, and junction capacitance within the bounds of fast recovery diode classification. These variations reflect manufacturing process differences among equivalent part families while maintaining functional compatibility in standard rectification circuits.

All identified substitutes are manufactured by Taiwan Semiconductor Corporation, maintain Active product status, and comply with ROHS3 and REACH requirements.

Parameter Comparison

Parameter	ES1GFS	HS1GFS	RS1GFS	RS1GFS MWG	RS1GFSH
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A
Reverse Recovery Time (trr)	35 ns	50 ns	150 ns	150 ns	150 ns
Current - Reverse Leakage @ Vr	1 µA @ 400 V	1 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V
Capacitance @ Vr, F	16 pF @ 4V, 1MHz	17 pF @ 4V, 1MHz	7 pF @ 4V, 1MHz	7 pF @ 4V, 1MHz	7 pF @ 4V, 1MHz
Package / Case	SOD-128	SOD-128	SOD-128	SOD-128	SOD-128
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	Standard	Standard	Standard	Standard	Automotive
Qualification	—	—	—	—	AEC-Q101

Engineering Selection Recommendations

ES1GFS (Primary Part) The ES1GFS offers the fastest reverse recovery time at 35 ns with the lowest reverse leakage current at 1 µA @ 400 V. This part is suitable for applications requiring minimal switching losses and tight leakage specifications. Active product status and ROHS3 compliance support long-term design continuity.

HS1GFS (Parametric Equivalent) The HS1GFS maintains identical voltage and current ratings with a moderate increase in reverse recovery time to 50 ns and capacitance to 17 pF. Leakage current remains at 1 µA @ 400 V. This part provides a balance between switching performance and availability, with 7790 units in stock.

RS1GFS (Parametric Equivalent) The RS1GFS exhibits a reverse recovery time of 150 ns with reduced capacitance at 7 pF and increased reverse leakage to 5 µA @ 400 V. This part is suitable for lower-frequency rectification applications where switching speed is less critical. Highest inventory availability at 28834 units supports supply chain flexibility.

RS1GFS MWG (Parametric Equivalent - Cut Tape Packaging) The RS1GFS MWG is electrically identical to RS1GFS but supplied in Cut Tape (CT) packaging instead of Tape & Reel (TR). This variant accommodates manual assembly or low-volume production workflows. Limited inventory at 913 units reflects specialized packaging requirements.

RS1GFSH (Parametric Equivalent - Automotive Grade) The RS1GFSH is qualified to AEC-Q101 automotive standards with electrical parameters identical to RS1GFS (150 ns trr, 5 µA leakage, 7 pF capacitance). This part is required for automotive applications demanding formal qualification documentation. Tape & Reel packaging with 28639 units in stock.

All substitute parts maintain Active product status, ROHS3 compliance, and REACH unaffected status, ensuring regulatory and environmental compatibility with the primary ES1GFS part.

Frequently Asked Questions (FAQ)

Q: Can RS1GFS replace ES1GFS in all applications? A: RS1GFS is electrically compatible for voltage, current, and thermal specifications. However, the reverse recovery time increases from 35 ns to 150 ns, and reverse leakage increases from 1 µA to 5 µA. Applications sensitive to switching losses or leakage current must evaluate circuit performance impact.

Q: What is the difference between RS1GFS and RS1GFS MWG? A: Both parts are electrically identical with 400 V, 1 A ratings and 150 ns reverse recovery time. The difference is packaging: RS1GFS is supplied in Tape & Reel (TR) for automated assembly, while RS1GFS MWG is supplied in Cut Tape (CT) for manual or low-volume assembly. Inventory availability also differs (28834 units vs. 913 units).

Q: When should RS1GFSH be selected instead of RS1GFS? A: RS1GFSH is required for automotive applications requiring AEC-Q101 qualification. Both parts share identical electrical specifications (150 ns trr, 5 µA leakage, 7 pF capacitance). Selection depends on application grade requirements, not electrical performance.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All identified substitutes—ES1GFS, HS1GFS, RS1GFS, RS1GFS MWG, and RS1GFSH—are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.

Q: What is the impact of capacitance variation among substitutes? A: Capacitance ranges from 7 pF (RS1GFS, RS1GFS MWG, RS1GFSH) to 17 pF (HS1GFS) to 16 pF (ES1GFS). In high-frequency switching circuits, lower capacitance reduces switching losses and improves efficiency. In standard rectification applications, this variation has minimal impact on circuit performance.

Q: Can HS1GFS be used as a direct replacement for ES1GFS? A: HS1GFS is a direct parametric equivalent with identical voltage, current, and forward voltage specifications. The reverse recovery time increases from 35 ns to 50 ns, representing a moderate performance trade-off. Both parts maintain 1 µA reverse leakage and are suitable for equivalent circuit applications.

Q: What inventory considerations apply to substitute selection? A: RS1GFS offers the highest inventory at 28834 units, followed by RS1GFSH at 28639 units. HS1GFS provides 7790 units, while RS1GFS MWG (Cut Tape) is limited to 913 units. ES1GFS maintains 7447 units. Inventory levels support supply chain planning and lead-time management.

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