ER2G-LTP Equivalent & Substitute Parts

Part Overview

The ER2G-LTP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as Active and complies with RoHS3 and REACH requirements. Equivalent and substitute parts are identified based on matching or exceeding critical electrical parameters including reverse voltage rating, average rectified current, forward voltage characteristics, recovery speed, and thermal operating range within the same package family.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.25	V @ 2 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-65 to 175	°C
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitute parts for the ER2G-LTP are classified into two categories based on electrical parameter alignment:

Direct Equivalents maintain all critical electrical specifications: 400 V reverse voltage rating, 2 A average rectified current, fast recovery characteristics (≤ 500ns), and compatible thermal operating ranges. These parts are interchangeable without circuit redesign.

Similar/Parametric Equivalents share the same package, voltage rating, and current rating but may differ in one or more secondary parameters such as forward voltage drop, reverse recovery time, reverse leakage current, or operating temperature range. Selection of these parts requires verification that the application tolerates the parameter variance.

Current-Rated Variants (1 A or 3 A) share the same voltage rating and package but differ in current capacity. These are listed for reference in applications requiring current derating or upgrading.

Voltage-Rated Variants (300 V) provide lower reverse voltage ratings and are suitable only for applications with reduced voltage requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	Speed	trr [ns]	Ir @ Vr [µA]	Tj (Max) [°C]	Product Status
ER2G-LTP	Micro Commercial Co	400	2	1.25 @ 2A	Fast Recovery ≤ 500ns	35	5 @ 400V	175	Active
ES2G-13-F	Diodes Incorporated	400	2	1.25 @ 2A	Fast Recovery ≤ 500ns	35	5 @ 400V	150	Active
CGRB204-G	Comchip Technology	400	2	1.1 @ 2A	Standard Recovery > 500ns	—	5 @ 400V	150	Active
ES2G-E3/5BT	Vishay General Semiconductor - Diodes Division	400	2	1.1 @ 2A	Fast Recovery ≤ 500ns	50	10 @ 400V	150	Active
MURS230T3G	onsemi	300	2	1.3 @ 2A	Fast Recovery ≤ 500ns	65	5 @ 300V	175	Last Time Buy
MURS240-M3/52T	Vishay General Semiconductor - Diodes Division	400	2	1.45 @ 2A	Fast Recovery ≤ 500ns	75	5 @ 400V	175	Active
STTH1R04U	STMicroelectronics	400	1	1.5 @ 1A	Fast Recovery ≤ 500ns	30	5 @ 400V	175	Active
STTH1R04UY	STMicroelectronics	400	1	1.6 @ 1A	Fast Recovery ≤ 500ns	30	5 @ 400V	175	Active
STTH3R04U	STMicroelectronics	400	3	1.5 @ 3A	Fast Recovery ≤ 500ns	35	5 @ 400V	175	Active
MURS140-E3/52T	Vishay General Semiconductor - Diodes Division	400	2	1.25 @ 1A	Fast Recovery ≤ 500ns	75	5 @ 400V	175	Active
MURS140-E3/5BT	Vishay General Semiconductor - Diodes Division	400	2	1.25 @ 1A	Fast Recovery ≤ 500ns	75	5 @ 400V	175	Active

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility)

ES2G-13-F (Diodes Incorporated) is the primary direct equivalent. It matches all critical electrical parameters of the ER2G-LTP including 400 V reverse voltage, 2 A average rectified current, 1.25 V forward voltage at 2 A, 35 ns reverse recovery time, and fast recovery speed classification. The operating temperature range is reduced to -55°C to 150°C compared to the ER2G-LTP's -65°C to 175°C. Both parts are Active status and RoHS3 compliant. ES2G-13-F is available in higher inventory (23,300 pcs).

Compatible Substitutes (Parameter Variance Acceptable)

MURS140-E3/5BT and MURS140-E3/52T (Vishay General Semiconductor - Diodes Division) are parametric equivalents rated for 400 V and 2 A with fast recovery characteristics. Forward voltage is specified at 1 A rather than 2 A (1.25 V @ 1 A). Reverse recovery time is 75 ns, longer than the ER2G-LTP's 35 ns. Both parts maintain the full operating temperature range (-65°C to 175°C) and are Active status. MURS140-E3/5BT has substantial inventory (304,601 pcs).

ES2G-E3/5BT (Vishay General Semiconductor - Diodes Division) is rated for 400 V and 2 A with fast recovery speed. Forward voltage is 1.1 V @ 2 A (lower than ER2G-LTP), reverse recovery time is 50 ns, and reverse leakage is 10 µA @ 400 V (higher than ER2G-LTP's 5 µA). Operating temperature range is -55°C to 150°C. Part is Active status.

MURS240-M3/52T (Vishay General Semiconductor - Diodes Division) is rated for 400 V and 2 A with fast recovery characteristics. Forward voltage is elevated at 1.45 V @ 2 A, and reverse recovery time is 75 ns. Operating temperature range is -65°C to 175°C. Part is Active status.

CGRB204-G (Comchip Technology) is rated for 400 V and 2 A but features standard recovery speed (> 500ns) rather than fast recovery. Forward voltage is lower at 1.1 V @ 2 A. Operating temperature range is limited to 150°C maximum. Part is Active status. This substitute is suitable only for applications where recovery speed is not critical.

Current-Rated Variants (Derating or Upgrading)

STTH1R04U and STTH1R04UY (STMicroelectronics) are rated for 400 V but with 1 A average rectified current. These parts are suitable for applications requiring current derating from the 2 A specification. STTH1R04UY includes automotive qualification (AEC-Q101) and operates over -40°C to 175°C. Both are Active status.

STTH3R04U (STMicroelectronics) is rated for 400 V with 3 A average rectified current. This part is suitable for applications requiring current upgrading. Operating temperature range is 175°C maximum. Part is Active status.

Voltage-Rated Variants (Lower Voltage Applications)

MURS230T3G (onsemi) is rated for 300 V (lower than ER2G-LTP's 400 V) with 2 A average rectified current. This part is suitable only for applications with maximum reverse voltage of 300 V or less. Product status is Last Time Buy, indicating limited future availability.

Compliance and Regulatory Status

All listed substitute parts are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8541.10.0080, matching the ER2G-LTP's regulatory profile. Moisture sensitivity level is 1 (Unlimited) for all parts.

Frequently Asked Questions (FAQ)

Q: Can ES2G-13-F be used as a direct replacement for ER2G-LTP?

A: Yes. ES2G-13-F matches all critical electrical specifications: 400 V reverse voltage, 2 A average rectified current, 1.25 V forward voltage at 2 A, 35 ns reverse recovery time, and fast recovery speed. The operating temperature range is reduced from -65°C to 175°C to -55°C to 150°C. If the application operates within -55°C to 150°C, ES2G-13-F is a direct substitute.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes have reverse recovery time ≤ 500 ns and are designed for high-frequency switching applications. Standard recovery diodes have reverse recovery time > 500 ns and are suitable for lower-frequency or linear applications. The ER2G-LTP is fast recovery (35 ns). CGRB204-G is standard recovery (> 500ns) and should be used only if the application does not require fast switching characteristics.

Q: Can MURS140-E3/5BT replace ER2G-LTP in all applications?

A: MURS140-E3/5BT is compatible for most applications. It matches 400 V and 2 A ratings and maintains fast recovery speed. However, reverse recovery time is 75 ns compared to ER2G-LTP's 35 ns, and forward voltage is specified at 1 A rather than 2 A. Applications sensitive to switching speed or forward voltage drop at 2 A should be evaluated.

Q: Why is MURS230T3G listed if it has a lower voltage rating?

A: MURS230T3G is listed as a reference for applications that do not require the full 400 V rating. It is rated for 300 V maximum reverse voltage and is suitable only for circuits with lower voltage requirements. This part is in Last Time Buy status and should not be selected for new designs unless voltage reduction is intentional.

Q: What is the significance of the operating temperature range difference?

A: The ER2G-LTP operates from -65°C to 175°C. ES2G-13-F and ES2G-E3/5BT operate from -55°C to 150°C. If the application requires operation below -55°C or above 150°C, these substitutes are not suitable. MURS140-E3/5BT, MURS140-E3/52T, and MURS240-M3/52T maintain the full -65°C to 175°C range.

Q: Can STTH1R04UY be used instead of ER2G-LTP?

A: STTH1R04UY is rated for 400 V but with only 1 A average rectified current, compared to ER2G-LTP's 2 A. This part is suitable only if the application current requirement is 1 A or less. STTH1R04UY includes automotive qualification (AEC-Q101) and may be preferred for automotive applications within the 1 A limit.

Q: What does "Last Time Buy" status mean for MURS230T3G?

A: Last Time Buy indicates that the manufacturer has announced end-of-life for this part. Existing inventory may be available, but future production is not planned. New designs should not use Last Time Buy parts unless no alternative exists.

Q: Are all substitute parts in the same DO-214AA (SMB) package?

A: Yes. All listed substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility with the ER2G-LTP. Packaging format (Tape & Reel or Cut Tape) may differ but does not affect electrical performance.

Q: How does forward voltage affect circuit performance?

A: Forward voltage drop affects power dissipation and voltage regulation in the circuit. The ER2G-LTP specifies 1.25 V @ 2 A. Substitutes with lower forward voltage (such as CGRB204-G at 1.1 V or ES2G-E3/5BT at 1.1 V) reduce power loss. Substitutes with higher forward voltage (such as MURS240-M3/52T at 1.45 V) increase power dissipation. Selection depends on the circuit's voltage regulation and thermal design requirements.

Q: What is reverse leakage current and why does it matter?

A: Reverse leakage current is the small current that flows through the diode when reverse biased. The ER2G-LTP specifies 5 µA @ 400 V. ES2G-E3/5BT specifies 10 µA @ 400 V. Higher leakage increases power consumption and may affect precision analog circuits. For most applications, the difference is negligible.

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