ES1LD Equivalent & Substitute Parts

Part Overview

The ES1LD is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 200 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This part is classified as obsolete, indicating discontinuation from the original manufacturer. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode specification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Capacitance @ Vr, F	16	pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the ES1LD is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V
Current - Average Rectified (Io): 1 A
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 5 µA @ 200 V
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: 920 mV to 1.1 V @ 1 A (within acceptable forward conduction range)
Reverse Recovery Time (trr): 25 ns to 35 ns (faster recovery acceptable)
Capacitance @ Vr, F: 10 pF to 20 pF @ 4V, 1MHz (minor junction capacitance variation acceptable)
Operating Temperature - Junction: -55°C to 175°C (extended range acceptable)

Substitute parts are classified as parametric equivalents, direct manufacturers, or similar alternatives based on the degree of parameter alignment with the ES1LD specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [mV]	trr [ns]	Ir @ Vr [µA]	Capacitance @ 4V, 1MHz [pF]	Tj (°C)	Product Status	Packaging
ES1LD	Taiwan Semiconductor Corporation	200	1	950	35	5	16	-55 to 150	Obsolete	DO-214AC (SMA)
ES1D	EVVO Semi	200	1	1000	35	5	15	-55 to 150	Active	SMA
ES1D R3G	Taiwan Semiconductor Corporation	200	1	950	35	5	16	-55 to 150	Discontinued at DiGi Electronics	DO-214AC (SMA)
ES1DH	Taiwan Semiconductor Corporation	200	1	950	35	5	16	-55 to 150	Active	DO-214AC (SMA)
ES1D-LTP	Micro Commercial Co	200	1	950	35	5	15	-65 to 175	Active	DO-214AC (SMA)
CGRA4003-G	Comchip Technology	200	1	1100	—	5	—	-55 to 150	Active	DO-214AC (SMA)
ES1D-13-F	Diodes Incorporated	200	1	920	25	5	20	-55 to 150	Active	SMA
ES1D-M3/5AT	Vishay General Semiconductor - Diodes Division	200	1	920	25	5	10	-55 to 150	Active	DO-214AC (SMA)
ES1D-M3/61T	Vishay General Semiconductor - Diodes Division	200	1	920	25	5	10	-55 to 150	Active	DO-214AC (SMA)
ES1DHE3_A/H	Vishay General Semiconductor - Diodes Division	200	1	920	25	5	10	-55 to 150	Active	DO-214AC (SMA)
ES1DHE3_A/I	Vishay General Semiconductor - Diodes Division	200	1	920	25	5	10	-55 to 150	Active	DO-214AC (SMA)

Engineering Selection Recommendations

Primary Substitutes (Parametric Equivalents):

The ES1D (EVVO Semi) and ES1DH (Taiwan Semiconductor Corporation) are parametric equivalents with identical electrical specifications to the ES1LD. The ES1DH is recommended for active production due to its active product status and availability in Tape & Reel packaging. The ES1D offers an alternative from a different manufacturer with equivalent performance characteristics.

Direct Manufacturer Alternative:

The ES1D-LTP (Micro Commercial Co) provides a direct substitute with extended operating temperature range (-65°C to 175°C) and active product status. This part is suitable for applications requiring wider temperature performance margins.

Similar Alternatives with Enhanced Performance:

The ES1D-M3/61T, ES1D-M3/5AT, ES1DHE3_A/H, and ES1DHE3_A/I (all Vishay General Semiconductor - Diodes Division) offer improved reverse recovery time (25 ns versus 35 ns) and reduced junction capacitance (10 pF versus 16 pF). The ES1DHE3 variants include AEC-Q101 automotive qualification, suitable for automotive applications. These parts are active and widely available.

The ES1D-13-F (Diodes Incorporated) provides faster reverse recovery (25 ns) with slightly lower forward voltage (920 mV) and is available in high volume.

Alternative Manufacturer:

The CGRA4003-G (Comchip Technology) meets core electrical requirements with slightly elevated forward voltage (1.1 V) and is active with available inventory.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and EAR99 export classification, ensuring regulatory and supply chain compatibility with the original ES1LD specification.

Frequently Asked Questions (FAQ)

Q: Can the ES1LD be directly replaced with any of the listed substitutes?

A: Yes, all listed substitutes meet the mandatory electrical and mechanical parameters of the ES1LD. The ES1DH, ES1D, and ES1D-LTP are direct parametric equivalents. The Vishay ES1D-M3/61T, ES1D-M3/5AT, ES1DHE3_A/H, and ES1DHE3_A/I offer improved performance characteristics (faster recovery time, lower capacitance) while maintaining full compatibility.

Q: What is the difference between the ES1DH and ES1LD?

A: The ES1DH is the active production equivalent of the ES1LD. Both parts share identical electrical specifications (200 V, 1 A, 950 mV forward voltage, 35 ns recovery time). The primary difference is product status: ES1LD is obsolete, while ES1DH is active. The ES1DH is available in Tape & Reel packaging and is the recommended replacement for new designs.

Q: Are the Vishay ES1D-M3/61T and ES1DHE3_A/I suitable for automotive applications?

A: The ES1DHE3_A/I includes AEC-Q101 automotive qualification and is suitable for automotive applications. The ES1D-M3/61T does not carry automotive qualification but meets the same electrical specifications. For automotive applications, the ES1DHE3_A/I or ES1DHE3_A/H are the appropriate selections.

Q: What is the significance of the reverse recovery time difference between the ES1LD (35 ns) and the Vishay alternatives (25 ns)?

A: Faster reverse recovery time (25 ns) reduces switching losses and improves efficiency in high-frequency rectification circuits. The Vishay parts (ES1D-M3/61T, ES1D-M3/5AT, ES1DHE3_A/H, ES1DHE3_A/I) provide this performance enhancement while maintaining full electrical compatibility with the ES1LD.

Q: Does packaging type affect substitution compatibility?

A: All substitute parts use the DO-214AC (SMA) surface mount package, ensuring mechanical and footprint compatibility. Packaging format variations (Cut Tape & Digi-Reel versus Tape & Reel) affect supply and handling but do not impact electrical performance or PCB assembly compatibility.

Q: What is the temperature operating range difference between the ES1LD and ES1D-LTP?

A: The ES1LD operates from -55°C to 150°C, while the ES1D-LTP extends to -65°C to 175°C. The extended range of the ES1D-LTP provides additional margin for applications in extreme temperature environments without changing electrical performance within the standard range.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory compatibility and eliminating the need for process or supply chain modifications.

Q: Why is the CGRA4003-G listed as a similar alternative rather than a direct equivalent?

A: The CGRA4003-G has a higher forward voltage specification (1.1 V versus 950 mV at 1 A) and does not provide reverse recovery time or capacitance data. While it meets the core voltage and current requirements, the incomplete parameter set and higher forward voltage classify it as a similar alternative rather than a direct parametric equivalent.

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