ESH3D R7G Equivalent & Substitute Parts

Part Overview

The ESH3D R7G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 200 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. This component is classified as discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement requirements. The part exhibits fast recovery characteristics with a 20 ns reverse recovery time, making it suitable for applications requiring rapid switching performance in rectification circuits.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 3 A	mV
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	20	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 175	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the ESH3D R7G is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Current - Average Rectified (Io): 3 A minimum
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case: DO-214AB (SMC) surface mount
Mounting Type: Surface Mount

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: 900 mV or lower @ 3 A
Reverse Recovery Time (trr): 35 ns or faster
Current - Reverse Leakage @ Vr: 10 µA or lower @ 200 V
Operating Temperature - Junction: -50°C to 175°C minimum range
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (Identical Current Rating): Parts rated for 3 A average rectified current with matching voltage specifications, fast recovery characteristics, and DO-214AB packaging. These parts provide direct functional replacement with minimal circuit impact.

Category B - Higher Current Rated Alternatives: Parts rated for 5 A average rectified current with 200 V voltage specifications. These parts are electrically compatible for applications where the ESH3D R7G is used but offer increased current capacity. Use is restricted to circuits where the higher current rating does not introduce thermal or reliability concerns.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Tj (°C)	Product Status
ESH3D R7G	Taiwan Semiconductor Corporation	200	3	900 @ 3A	Fast Recovery ≤ 500ns	20	5 @ 200V	DO-214AB (SMC)	-55 to 175	Discontinued
ER3D-TP	Micro Commercial Co	200	3	950 @ 3A	Fast Recovery ≤ 500ns	35	5 @ 200V	DO-214AB (SMC)	-50 to 175	Active
ES3D	Diotec Semiconductor	200	3	900 @ 3A	Fast Recovery ≤ 500ns	20	5 @ 200V	DO-214AB (SMC)	-50 to 150	Active
ES3D-13-F	Diodes Incorporated	200	3	900 @ 3A	Fast Recovery ≤ 500ns	25	10 @ 200V	DO-214AB (SMC)	-55 to 150	Active
MURS320-13-F	Diodes Incorporated	200	3	875 @ 3A	Fast Recovery ≤ 500ns	25	5 @ 200V	DO-214AB (SMC)	-65 to 175	Active
MURS320-E3/57T	Vishay General Semiconductor - Diodes Division	200	3	875 @ 3A	Fast Recovery ≤ 500ns	35	5 @ 200V	DO-214AB (SMC)	-65 to 175	Active
MURS320-E3/9AT	Vishay General Semiconductor - Diodes Division	200	3	875 @ 3A	Fast Recovery ≤ 500ns	35	5 @ 200V	DO-214AB (SMC)	-65 to 175	Active
MURS320-M3/57T	Vishay General Semiconductor - Diodes Division	200	3	875 @ 3A	Fast Recovery ≤ 500ns	35	5 @ 200V	DO-214AB (SMC)	-65 to 175	Active
MURS320-M3/9AT	Vishay General Semiconductor - Diodes Division	200	3	875 @ 3A	Fast Recovery ≤ 500ns	35	5 @ 200V	DO-214AB (SMC)	-65 to 175	Active
CGRC503-G	Comchip Technology	200	5	1150 @ 5A	Standard Recovery > 500ns	—	10 @ 200V	DO-214AB (SMC)	—	Active

Engineering Selection Recommendations

Primary Substitutes (Category A - Direct 3 A Equivalents):

The following parts provide direct functional replacement for the ESH3D R7G with active product status and full compliance certifications:

ES3D (Diotec Semiconductor): Identical electrical specifications including 200 V reverse voltage, 3 A current rating, 900 mV forward voltage drop, and 20 ns reverse recovery time. Operating temperature range of -50°C to 150°C is narrower than the original part. ROHS3 compliant. Highest inventory availability (131,200 pcs) ensures supply continuity.

ES3D-13-F (Diodes Incorporated): Meets all primary substitution criteria with 200 V, 3 A, 900 mV forward voltage, and fast recovery characteristics. Reverse recovery time of 25 ns is slightly longer than the original 20 ns specification. Operating temperature range of -55°C to 150°C matches the original lower temperature limit. ROHS3 compliant with MSL 1 rating. Substantial inventory (45,182 pcs) supports procurement requirements.

MURS320-13-F (Diodes Incorporated): Provides 200 V, 3 A ratings with superior forward voltage performance (875 mV vs. 900 mV). Reverse recovery time of 25 ns meets fast recovery classification. Extended operating temperature range of -65°C to 175°C exceeds original specifications. ROHS3 compliant. Adequate inventory (7,630 pcs) available.

MURS320-E3/57T (Vishay General Semiconductor - Diodes Division): Equivalent to MURS320-13-F with identical electrical ratings and extended temperature range (-65°C to 175°C). Packaged in Cut Tape format. ROHS3 compliant. Inventory of 2,728 pcs supports standard procurement volumes.

MURS320-E3/9AT (Vishay General Semiconductor - Diodes Division): Equivalent to MURS320-E3/57T with Tape & Reel packaging. Extended temperature range and superior forward voltage characteristics. ROHS3 compliant. Inventory of 3,568 pcs available.

MURS320-M3/57T (Vishay General Semiconductor - Diodes Division): Functionally equivalent to other MURS320 variants with 200 V, 3 A, 875 mV specifications and -65°C to 175°C operating range. ROHS3 compliant. Inventory of 978 pcs supports procurement.

MURS320-M3/9AT (Vishay General Semiconductor - Diodes Division): Equivalent MURS320 variant with Tape & Reel packaging. ROHS3 compliant. Inventory of 933 pcs available.

ER3D-TP (Micro Commercial Co): Meets primary substitution criteria with 200 V, 3 A ratings and fast recovery characteristics. Forward voltage of 950 mV is within acceptable tolerance. Reverse recovery time of 35 ns meets fast recovery classification. Operating temperature range of -50°C to 175°C. ROHS3 compliant. High inventory (16,840 pcs) ensures availability.

Secondary Substitute (Category B - Higher Current Rating):

CGRC503-G (Comchip Technology): Rated for 5 A average rectified current at 200 V reverse voltage. This part is electrically compatible for applications where increased current capacity is acceptable. Forward voltage of 1.15 V @ 5 A is higher than the original specification. Recovery speed is classified as Standard (> 500ns), which does not meet the fast recovery requirement of the original part. Use of this substitute is restricted to circuits where the slower recovery time and higher forward voltage drop do not introduce functional or thermal concerns. ROHS3 compliant. Inventory of 767 pcs available.

Frequently Asked Questions (FAQ)

Q: Can the ESH3D R7G be directly replaced with any of the listed substitutes?

A: Yes. All parts in Category A (ER3D-TP, ES3D, ES3D-13-F, MURS320-13-F, MURS320-E3/57T, MURS320-E3/9AT, MURS320-M3/57T, MURS320-M3/9AT) provide direct functional replacement. These parts share identical or superior electrical specifications, matching package types (DO-214AB SMC), and active product status. Selection among these options depends on packaging format preference, inventory availability, and operating temperature requirements for the specific application.

Q: What is the difference between the MURS320 variants?

A: The MURS320 family includes multiple packaging and qualification variants. MURS320-13-F, MURS320-E3/57T, MURS320-E3/9AT, MURS320-M3/57T, and MURS320-M3/9AT all share identical electrical specifications (200 V, 3 A, 875 mV forward voltage, 25 ns reverse recovery time). Differences exist in packaging format (Cut Tape vs. Tape & Reel) and qualification level designations (E3 vs. M3). All variants are ROHS3 compliant and suitable for the ESH3D R7G application.

Q: Why is the CGRC503-G listed as a secondary substitute if it has a higher current rating?

A: The CGRC503-G is rated for 5 A average rectified current, which exceeds the 3 A requirement of the ESH3D R7G. While this higher rating provides design margin in current-limited applications, the part exhibits Standard recovery speed (> 500ns) rather than the fast recovery (≤ 500ns) characteristic of the original part. Additionally, the forward voltage drop of 1.15 V @ 5 A is significantly higher than the 900 mV specification of the ESH3D R7G. Use of this substitute is appropriate only when the application circuit can tolerate slower switching performance and increased power dissipation.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the compliance status of the ESH3D R7G. All parts also maintain MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard PCB assembly and storage procedures.

Q: What is the significance of reverse recovery time (trr) in selecting a substitute?

A: Reverse recovery time determines the speed at which the diode transitions from conducting to blocking state. The ESH3D R7G specifies 20 ns reverse recovery time, classified as fast recovery. Substitute parts with trr values of 20 ns to 35 ns maintain fast recovery classification and are suitable for high-frequency rectification applications. The CGRC503-G, with unspecified trr and Standard recovery classification, is not suitable for applications requiring rapid switching transitions.

Q: Can the ES3D-13-F be used in applications requiring the full -55°C to 175°C temperature range of the original part?

A: The ES3D-13-F operates over -55°C to 150°C, which covers the lower temperature limit of the original specification but extends only to 150°C rather than 175°C. This part is suitable for applications where the maximum junction temperature does not exceed 150°C. For applications requiring operation at temperatures between 150°C and 175°C, the MURS320 family variants (operating -65°C to 175°C) or the ES3D (operating -50°C to 150°C) should be evaluated based on specific thermal requirements.

Q: What packaging formats are available for the substitute parts?

A: All substitute parts are packaged in DO-214AB (SMC) surface mount format, matching the original ESH3D R7G package. Packaging variants include Cut Tape (CT), Tape & Reel (TR), and Digi-Reel formats. Selection of packaging format depends on procurement and assembly process requirements. All formats are compatible with standard surface mount assembly equipment.

Q: Is the ESH3D R7G still available for procurement?

A: The ESH3D R7G is classified as discontinued at DiGi Electronics. While 944 pcs are noted as in stock from the original supplier, long-term availability is not assured. Transition to one of the active substitute parts is recommended for new designs and ongoing production requirements to ensure supply continuity.

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