ER2B-LTP Equivalent & Substitute Parts

Part Overview

The ER2B-LTP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 100 V DC reverse voltage and 2 A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Equivalent and substitute parts are necessary to maintain design continuity, support existing production requirements, and ensure supply chain alternatives for applications currently utilizing this diode.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 2 A	mV
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65°C ~ 175°C	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the ER2B-LTP is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 2 A
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Acceptable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Within ±100 mV of 950 mV @ 2 A
Reverse Recovery Time (trr): Within ±10 ns of 35 ns
Current - Reverse Leakage @ Vr: Within ±3 µA of 5 µA @ 100 V
Operating Temperature - Junction: Minimum -55°C, Maximum 150°C or higher

All substitute parts listed maintain ROHS3 compliance, MSL 1 rating, and EAR99 export classification. Substitute parts with "Active" product status are preferred for new applications and ongoing production support.

Parameter Comparison

Parameter	ER2B-LTP (Micro Commercial Co)	CGRB202-G (Comchip)	ES2B (YAGEO)	ES2B-13-F (Diodes Inc)	ESH2B-E3/5BT (Vishay)	MURS210T3G (onsemi)
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	2 A	2 A	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 2 A	1.1 V @ 2 A	0.95 V	920 mV @ 2 A	930 mV @ 2 A	940 mV @ 2 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Reverse Recovery Time (trr)	35 ns	—	—	25 ns	35 ns	30 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	—	5 µA @ 100 V	2 µA @ 100 V	2 µA @ 100 V
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature - Junction	-65°C ~ 175°C	150°C (Max)	—	-55°C ~ 150°C	-55°C ~ 175°C	-60°C ~ 175°C
Product Status	Not For New Designs	Active	Active	Active	Active	Last Time Buy
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

The ES2B-13-F (Diodes Incorporated), ESH2B-E3/5BT (Vishay General Semiconductor), and CGRB202-G (Comchip Technology) are recommended as primary substitutes. All three maintain active product status, ensuring long-term availability and manufacturing support. ES2B-13-F and ESH2B-E3/5BT offer forward voltage characteristics within acceptable tolerance of the ER2B-LTP, with ES2B-13-F providing the lowest forward voltage at 920 mV @ 2 A. ESH2B-E3/5BT matches the reverse recovery time specification at 35 ns and offers improved reverse leakage performance at 2 µA @ 100 V.

Secondary Substitute (Last Time Buy Status):

The MURS210T3G (onsemi) is classified as "Last Time Buy," indicating limited future availability. This part meets all electrical specifications with 940 mV forward voltage @ 2 A and 30 ns reverse recovery time. Selection of this part should be limited to applications requiring immediate supply or existing production runs with confirmed end dates.

Alternative Substitute (Active Status, Limited Data):

The ES2B (YAGEO) is available in high inventory (55,400 pcs) with active product status. Detailed electrical parameters are not fully specified in available documentation; however, the part description confirms 100 V, 2 A rating and 0.95 V forward voltage specification, indicating compatibility with the ER2B-LTP application envelope.

Not Recommended:

The CGRB202-G exhibits forward voltage of 1.1 V @ 2 A, which exceeds the acceptable variation threshold and may result in increased power dissipation in the application circuit. Additionally, the maximum operating temperature is specified as 150°C, which is lower than the ER2B-LTP upper limit of 175°C.

All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and identical export classification (EAR99), ensuring regulatory and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the ER2B-LTP be directly replaced with any of the listed substitute parts?

A: Direct replacement is possible only with parts that maintain identical voltage rating (100 V), current rating (2 A), package type (DO-214AA, SMB), and fast recovery speed classification. ES2B-13-F, ESH2B-E3/5BT, and CGRB202-G meet these requirements. The MURS210T3G also qualifies but has limited future availability. ES2B requires verification of detailed electrical specifications before deployment.

Q: What is the significance of the "Not For New Designs" status of the ER2B-LTP?

A: This designation indicates the ER2B-LTP has reached end-of-life and will not receive design updates, process improvements, or extended manufacturing support. Existing inventory may be available, but new designs should incorporate one of the active-status substitute parts to ensure long-term supply chain stability and access to manufacturer technical support.

Q: Are there differences in forward voltage between the ER2B-LTP and substitute parts?

A: Yes. The ER2B-LTP specifies 950 mV @ 2 A. Substitutes range from 920 mV (ES2B-13-F) to 1.1 V (CGRB202-G). Forward voltage differences affect power dissipation and thermal performance. For applications with tight thermal budgets, ES2B-13-F and ESH2B-E3/5BT are preferred due to lower forward voltage. CGRB202-G should be avoided in power-sensitive applications.

Q: Do all substitute parts have the same operating temperature range?

A: No. The ER2B-LTP operates from -65°C to 175°C. ES2B-13-F is limited to -55°C to 150°C, which may be insufficient for applications requiring the full -65°C lower limit or 175°C upper limit. ESH2B-E3/5BT and MURS210T3G both support -55°C to 175°C, providing adequate coverage for most applications. CGRB202-G is limited to 150°C maximum.

Q: What is the difference between reverse recovery time specifications?

A: Reverse recovery time (trr) affects switching speed and electromagnetic interference characteristics. The ER2B-LTP specifies 35 ns. ES2B-13-F offers 25 ns (faster), ESH2B-E3/5BT matches at 35 ns, and MURS210T3G provides 30 ns. Faster recovery times reduce switching losses and EMI but may not be necessary for all applications. Slower recovery times (higher trr values) are generally acceptable in low-frequency rectification circuits.

Q: Is the DO-214AA package identical across all substitute parts?

A: Yes. All substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility with existing PCB layouts and assembly processes. No redesign or rework is required for package accommodation.

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current affects standby power consumption and high-temperature performance. The ER2B-LTP specifies 5 µA @ 100 V. ESH2B-E3/5BT and MURS210T3G both offer 2 µA @ 100 V, representing improved leakage performance. Lower leakage reduces power loss in standby conditions and improves reliability in high-temperature environments. This difference is negligible in most rectification applications but beneficial in precision analog circuits.

Q: Why is CGRB202-G listed as a substitute if forward voltage is higher?

A: CGRB202-G meets the mandatory electrical specifications (100 V, 2 A, fast recovery, DO-214AA package) and maintains full regulatory compliance. However, the elevated forward voltage (1.1 V vs. 950 mV) results in higher power dissipation and thermal stress. Selection should be based on application thermal tolerance and power budget constraints. For general-purpose rectification with adequate thermal design margin, CGRB202-G is functionally acceptable.

Q: What does "Last Time Buy" status mean for MURS210T3G?

A: "Last Time Buy" indicates onsemi has announced end-of-production for this part. Existing inventory may be available for a limited period, but no new manufacturing runs are planned. MURS210T3G should be selected only for applications with confirmed short-term requirements or existing production runs with defined end dates. For long-term applications, ES2B-13-F, ESH2B-E3/5BT, or CGRB202-G are preferred.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring compatibility with environmental regulations and customer requirements. The ER2B-LTP also carries ROHS3 certification, so no compliance risk exists during substitution.

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