ESH1DHE3/5AT Equivalent & Substitute Parts Reference

Part Overview

The ESH1DHE3/5AT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 200 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This part is classified as obsolete, though 933 pieces remain in stock as new original inventory. The device meets automotive-grade specifications with AEC-Q101 qualification and is ROHS3 compliant.

Equivalent and substitute parts are necessary due to the obsolete status of the ESH1DHE3/5AT. Active production alternatives with identical or superior electrical characteristics and the same package footprint are available from Vishay and other manufacturers, ensuring design continuity and supply chain reliability.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	200	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) Maximum @ If	900 mV @ 1 A	mV @ A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	25	ns
Current - Reverse Leakage @ Vr	1	µA @ 200 V
Operating Temperature - Junction	-55 to 175	°C
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the ESH1DHE3/5AT is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) Maximum: 200 V
Current - Average Rectified (Io): 1 A
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C to 175°C minimum

Secondary Compatibility Parameters:

Voltage - Forward (Vf) Maximum @ If: 900 mV @ 1 A (or lower)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): 25 ns (or lower)
Current - Reverse Leakage @ Vr: 1 µA @ 200 V (or lower)

Substitute parts are grouped into two categories:

Category 1: Direct Vishay ESH1 Series Equivalents These parts share the identical base product number (ESH1) and are manufactured by Vishay General Semiconductor - Diodes Division. All meet or exceed the electrical specifications of the main part and maintain automotive-grade AEC-Q101 qualification where applicable.

Category 2: Vishay FRED Pt® Series Equivalents These parts are from the FRED Pt® product line (VS-1EMH02 series) and offer improved reverse recovery time performance (15.2 ns versus 25 ns) while maintaining all primary substitution criteria. These parts are actively produced and widely available.

Category 3: Cross-Manufacturer Equivalent The CGRA4003-G from Comchip Technology meets all primary substitution criteria with identical package and voltage/current ratings. Forward voltage is specified at 1.1 V (higher than the 900 mV maximum of the main part) and reverse leakage is 5 µA (higher than the 1 µA specification), but both remain within acceptable rectifier diode tolerances for general-purpose applications.

Parameter Comparison

Part Number	Manufacturer	Status	Vr (Max) V	Io (A)	Vf (Max) @ 1A (mV)	trr (ns)	Ir @ 200V (µA)	Grade	AEC-Q101	Inventory (Pcs)
ESH1DHE3/5AT	Vishay	Obsolete	200	1	900	25	1	Automotive	Yes	933
ESH1DHE3_A/I	Vishay	Active	200	1	900	25	1	Automotive	Yes	7800
ESH1D-E3/61T	Vishay	Active	200	1	900	25	1	—	—	10200
ESH1D-M3/5AT	Vishay	Active	200	1	900	25	1	—	—	1078
ESH1D-M3/61T	Vishay	Active	200	1	900	25	1	—	—	986
ESH1DHE3_A/H	Vishay	Active	200	1	900	25	1	Automotive	Yes	9431
ESH1DHM3_A/H	Vishay	Active	200	1	900	25	1	Automotive	Yes	1097
ESH1DHM3_A/I	Vishay	Active	200	1	900	25	1	Automotive	Yes	821
VS-1EMH02-M3/5AT	Vishay	Active	200	1	900	15.2	2	—	—	15716
VS-1EMH02HM3/5AT	Vishay	Active	200	1	900	15.2	2	Automotive	Yes	11230
CGRA4003-G	Comchip	Active	200	1	1100	—	5	—	—	929

Engineering Selection Recommendations

For Automotive Applications with AEC-Q101 Requirement:

Select from the following active production parts that maintain automotive-grade qualification:

ESH1DHE3_A/I: Direct electrical equivalent with highest inventory availability (7800 pcs). Recommended as primary replacement.
ESH1DHE3_A/H: Identical specifications with 9431 pcs in stock. Alternative primary choice.
ESH1DHM3_A/H or ESH1DHM3_A/I: Equivalent performance with lower inventory levels (1097 and 821 pcs respectively).
VS-1EMH02HM3/5AT: FRED Pt® series with improved reverse recovery time (15.2 ns) and automotive qualification. 11230 pcs available. Suitable where faster switching performance is beneficial.

For General-Purpose Applications Without Automotive Requirement:

ESH1D-E3/61T: Highest inventory (10200 pcs) among non-automotive qualified variants. Electrically equivalent.
VS-1EMH02-M3/5AT: FRED Pt® series without automotive qualification. 15716 pcs in stock. Superior reverse recovery time performance.

For Cross-Manufacturer Substitution:

CGRA4003-G (Comchip Technology): Meets all primary substitution criteria. Forward voltage specification of 1.1 V and reverse leakage of 5 µA are within acceptable ranges for general-purpose rectifier applications. 929 pcs available.

Selection Priority Based on Application Context:

If automotive qualification is mandatory: ESH1DHE3_A/I or ESH1DHE3_A/H
If improved switching performance is required: VS-1EMH02HM3/5AT (automotive) or VS-1EMH02-M3/5AT (general-purpose)
If maximum inventory availability is critical: VS-1EMH02-M3/5AT (15716 pcs)
If cross-manufacturer sourcing is necessary: CGRA4003-G

All recommended parts are ROHS3 compliant, MSL 1 (Unlimited), and operate across the -55°C to 175°C junction temperature range.

Frequently Asked Questions (FAQ)

Q1: Can ESH1DHE3/5AT be directly replaced with ESH1DHE3_A/I?

A: Yes. ESH1DHE3_A/I is an active production equivalent with identical electrical specifications (200 V, 1 A, 900 mV forward voltage, 25 ns reverse recovery time) and the same DO-214AC package. Both are automotive-grade with AEC-Q101 qualification. The primary difference is production status: ESH1DHE3/5AT is obsolete while ESH1DHE3_A/I is actively manufactured.

Q2: What is the difference between ESH1 series and VS-1EMH02 (FRED Pt®) series?

A: Both meet the 200 V, 1 A primary specifications and use the same DO-214AC package. The key difference is reverse recovery time: ESH1 series specifies 25 ns, while VS-1EMH02 FRED Pt® series specifies 15.2 ns. The faster recovery time of FRED Pt® reduces switching losses and heat generation, making it suitable for higher-frequency applications. Reverse leakage current is also lower in FRED Pt® (2 µA versus 1 µA), which is acceptable for general-purpose rectification.

Q3: Is CGRA4003-G from Comchip a suitable substitute?

A: CGRA4003-G meets all primary substitution criteria: 200 V reverse voltage, 1 A current rating, and DO-214AC package. However, it specifies 1.1 V forward voltage (versus 900 mV maximum) and 5 µA reverse leakage (versus 1 µA). These differences are within acceptable tolerances for general-purpose rectifier applications but may result in slightly higher forward conduction losses. CGRA4003-G is not automotive-qualified and lacks AEC-Q101 certification.

Q4: Which substitute part has the best inventory availability?

A: VS-1EMH02-M3/5AT has the highest inventory at 15716 pieces. This is the FRED Pt® series variant without automotive qualification. If automotive qualification is required, ESH1DHE3_A/H offers the best availability at 9431 pieces.

Q5: Can I use a substitute part with lower reverse recovery time (trr)?

A: Yes. Lower reverse recovery time is a performance improvement, not a limitation. VS-1EMH02 series parts with 15.2 ns trr are fully compatible replacements for ESH1DHE3/5AT (25 ns trr). The faster switching characteristic reduces switching losses and is beneficial in most applications.

Q6: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant. The main part ESH1DHE3/5AT is also ROHS3 compliant. All parts have MSL 1 (Unlimited) moisture sensitivity rating.

Q7: What is the operating temperature range for substitute parts?

A: All substitute parts operate across the junction temperature range of -55°C to 175°C, matching the main part specification.

Q8: If I need automotive qualification, which substitutes are available?

A: Five substitute parts maintain automotive-grade qualification with AEC-Q101 certification: ESH1DHE3_A/I (7800 pcs), ESH1DHE3_A/H (9431 pcs), ESH1DHM3_A/H (1097 pcs), ESH1DHM3_A/I (821 pcs), and VS-1EMH02HM3/5AT (11230 pcs).

Q9: What does "Fast Recovery ≤ 500ns, > 200mA (Io)" mean?

A: This classification indicates the diode is a fast recovery rectifier with reverse recovery time not exceeding 500 nanoseconds when conducting currents greater than 200 milliamps. All listed substitute parts meet this specification, with most specifying significantly faster recovery times (15.2 to 25 ns).

Q10: Can I mix different substitute parts in the same circuit board design?

A: Yes, provided all parts meet your application's electrical requirements (voltage, current, temperature range) and compliance requirements (automotive qualification, RoHS status). However, for consistency and simplified inventory management, using a single substitute part number across a design is recommended.

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