U2C-E3/5BT Equivalent & Substitute Parts

Part Overview

The U2C-E3/5BT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount device operates at 150 V DC reverse voltage with a 2 A average rectified current rating and is packaged in the DO-214AA (SMB) form factor. The device is classified as Active product status and is RoHS3 compliant with REACH unaffected designation.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs. The following parts maintain the core electrical specifications necessary for direct substitution or parametric equivalence in 150 V, 2 A rectifier applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 2 A	mV
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	27	ns
Current - Reverse Leakage @ Vr	10	µA @ 150 V
Package / Case	DO-214AA, SMB	—
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 logic for the U2C-E3/5BT is based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 150 V minimum
Current - Average Rectified (Io): 2 A minimum
Package / Case: DO-214AA or SMB equivalent
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Technology: Standard or Schottky (with performance verification)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parametric Equivalents maintain identical voltage and current ratings with minor variations in forward voltage, reverse recovery time, or reverse leakage current within acceptable engineering tolerances.

Direct Manufacturer Equivalents may exceed the primary current rating (3 A vs. 2 A) or employ alternative semiconductor technology (Schottky vs. Standard) while maintaining voltage compatibility and package form factor.

Manufacturer Recommended Equivalents are designated by original equipment manufacturers as approved alternatives with full electrical and mechanical compatibility.

Parameter Comparison

Parameter	U2C-E3/5BT (Vishay)	ES2C-E3/52T (Vishay)	STPS3150U (STMicroelectronics)	ES2C-13-F (Diodes Inc.)	MURS115T3G (onsemi)	ES2C (Diotec)
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	STMicroelectronics	Diodes Incorporated	onsemi	Diotec Semiconductor
Voltage - DC Reverse (Vr) (Max)	150 V	150 V	150 V	150 V	150 V	150 V
Current - Average Rectified (Io)	2 A	2 A	3 A	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 2 A	900 mV @ 2 A	820 mV @ 3 A	920 mV @ 2 A	875 mV @ 1 A	900 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)	27 ns	30 ns	—	25 ns	35 ns	20 ns
Current - Reverse Leakage @ Vr	10 µA @ 150 V	10 µA @ 150 V	2 µA @ 150 V	5 µA @ 150 V	2 µA @ 150 V	5 µA @ 150 V
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Technology	Standard	Standard	Schottky	Standard	Standard	Standard
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	Max 175°C	-55 to 150°C	-65 to 175°C	-50 to 150°C
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)	Not Applicable
Product Status	Active	Active	Active	Active	Last Time Buy	Active

Engineering Selection Recommendations

ES2C-E3/52T (Vishay General Semiconductor - Diodes Division)

This part is a parametric equivalent to the U2C-E3/5BT with identical voltage and current ratings. Both devices are manufactured by Vishay and share the same base product family (ES2C series). The ES2C-E3/52T exhibits a reverse recovery time of 30 ns compared to 27 ns for the U2C-E3/5BT, representing a 3 ns difference within acceptable engineering tolerance. Both parts maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature range. This substitute is suitable for direct replacement in applications where Vishay product continuity is preferred.

STPS3150U (STMicroelectronics)

This part employs Schottky technology rather than standard rectifier technology and provides a higher current rating of 3 A versus the 2 A specification of the U2C-E3/5BT. The STPS3150U maintains the 150 V voltage rating and DO-214AA package form factor. Forward voltage is reduced to 820 mV at 3 A, and reverse leakage current is significantly lower at 2 µA. The maximum operating temperature is 175°C, exceeding the U2C-E3/5BT specification. This substitute is applicable in applications where lower forward voltage drop or higher current capacity provides design margin.

ES2C-13-F (Diodes Incorporated)

This part is a manufacturer-recommended equivalent with identical 150 V and 2 A ratings. The ES2C-13-F is manufactured by Diodes Incorporated and maintains fast recovery speed classification. Forward voltage is specified at 920 mV at 2 A, representing a 20 mV increase over the U2C-E3/5BT. Reverse recovery time is 25 ns, which is 2 ns faster than the primary part. Reverse leakage current is 5 µA, lower than the U2C-E3/5BT specification. ROHS3 compliance and MSL 1 rating are maintained. This substitute provides full electrical and mechanical compatibility.

MURS115T3G (onsemi)

This part is designated as a manufacturer-recommended equivalent with 150 V and 2 A ratings. The MURS115T3G is currently in Last Time Buy product status, indicating that future availability may be limited. The device maintains fast recovery speed classification and ROHS3 compliance. Operating temperature range extends to -65°C to 175°C, providing wider temperature coverage than the U2C-E3/5BT. Forward voltage is specified at 875 mV at 1 A, and reverse leakage current is 2 µA. Due to Last Time Buy status, this substitute is suitable only for applications where long-term supply is not critical.

ES2C (Diotec Semiconductor)

This part is a parametric equivalent manufactured by Diotec Semiconductor with identical 150 V and 2 A ratings. The ES2C exhibits the fastest reverse recovery time at 20 ns, providing 7 ns improvement over the U2C-E3/5BT. Forward voltage is 900 mV at 2 A, matching the primary part specification. Reverse leakage current is 5 µA. Operating temperature range is -50°C to 150°C. ROHS3 compliance is maintained. Moisture Sensitivity Level is listed as Not Applicable. This substitute is suitable for applications where improved switching speed is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the ES2C-E3/52T be used as a direct replacement for the U2C-E3/5BT?

A: Yes. Both parts are manufactured by Vishay, maintain identical 150 V and 2 A ratings, share the same DO-214AA package, and are ROHS3 compliant with MSL 1 rating. The reverse recovery time difference of 3 ns is within acceptable engineering tolerance for standard rectifier applications.

Q: What is the primary difference between the STPS3150U and the U2C-E3/5BT?

A: The STPS3150U employs Schottky technology and provides a 3 A current rating compared to the 2 A rating of the U2C-E3/5BT. Both maintain 150 V voltage rating and DO-214AA package compatibility. The Schottky device exhibits lower forward voltage (820 mV at 3 A) and lower reverse leakage current (2 µA).

Q: Is the MURS115T3G suitable for new designs?

A: The MURS115T3G is currently in Last Time Buy product status. While it provides full electrical and mechanical compatibility with the U2C-E3/5BT, it is not recommended for new designs requiring long-term supply assurance. Active alternatives such as ES2C-E3/52T, ES2C-13-F, or ES2C are preferred for new product development.

Q: Do all substitute parts maintain the same package form factor?

A: Yes. All listed substitute parts utilize the DO-214AA (SMB) surface mount package, ensuring mechanical compatibility with the U2C-E3/5BT in PCB layout and assembly processes.

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

A: Reverse recovery time determines the speed at which the diode transitions from forward conduction to reverse blocking. All listed substitutes maintain the Fast Recovery classification (≤ 500ns, > 200mA). Variations in trr between 20 ns and 35 ns are within acceptable tolerance for general-purpose rectifier applications. Applications requiring specific switching speed characteristics should reference the detailed trr specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected or REACH info available upon request designation, ensuring regulatory compliance for applications subject to environmental restrictions.

Q: What is the difference between parametric equivalents and manufacturer-recommended equivalents?

A: Parametric equivalents maintain identical or near-identical electrical specifications and are selected based on matching voltage, current, and package criteria. Manufacturer-recommended equivalents are explicitly designated by original equipment manufacturers as approved alternatives. Both categories provide full substitution capability; the distinction reflects the source of equivalence determination.

Q: Can the ES2C from Diotec be substituted for the U2C-E3/5BT in all applications?

A: The ES2C maintains identical 150 V and 2 A ratings, DO-214AA package, and fast recovery speed classification. The primary difference is the faster reverse recovery time (20 ns vs. 27 ns), which is advantageous in most applications. Operating temperature range is -50°C to 150°C compared to -55°C to 150°C for the U2C-E3/5BT. Applications requiring operation below -50°C should reference the primary part or alternatives with extended low-temperature ratings.

Q: How does forward voltage variation affect substitution decisions?

A: Forward voltage variations between 820 mV and 920 mV across the substitute parts represent typical manufacturing tolerance ranges for rectifier diodes. In applications where forward voltage drop directly impacts power dissipation or circuit performance, the specific forward voltage specification should be evaluated against circuit design requirements. The STPS3150U exhibits the lowest forward voltage (820 mV at 3 A), while the ES2C-13-F exhibits the highest (920 mV at 2 A).

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