U2C-E3/52T Equivalent & Substitute Parts

Part Overview

The U2C-E3/52T is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 150 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) package. This part is classified as Active product status and features fast recovery characteristics with a reverse recovery time of 27 ns. The device is RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or when specific performance characteristics of alternative manufacturers provide operational compatibility within the same electrical and mechanical specifications.

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	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
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°C ~ 150°C	°C
Technology	Standard	-
RoHS Status	ROHS3 Compliant	-
MSL Rating	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the U2C-E3/52T are classified based on electrical parameter compatibility and mechanical interchangeability. The primary substitution criteria are:

Critical Parameters for Substitution:

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
Technology: Standard or Schottky (with performance verification)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Substitution Categories:

Parametric Equivalents meet all critical electrical parameters and package requirements with identical or superior ratings. These parts are direct functional replacements.

Direct Manufacturer Alternatives may exceed the current rating (3 A vs. 2 A) or employ different semiconductor technology (Schottky vs. Standard) while maintaining voltage and package compatibility. These parts are suitable when higher current capacity or lower forward voltage drop is acceptable.

Manufacturer Recommended Alternatives are designated by original equipment manufacturers as approved substitutes, with minor variations in forward voltage, reverse recovery time, or reverse leakage current within acceptable operating margins.

Parameter Comparison

Parameter	U2C-E3/52T (Main)	ES2C-E3/52T	STPS3150U	ES2C-13-F	MURS115T3G	ES2C
Manufacturer	Vishay	Vishay	STMicroelectronics	Diodes Inc.	onsemi	Diotec
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	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
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 175°C	-55°C ~ 150°C	-65°C ~ 175°C	-50°C ~ 150°C
Technology	Standard	Standard	Schottky	Standard	Standard	Standard
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Last Time Buy	Active

Engineering Selection Recommendations

ES2C-E3/52T (Vishay) is a parametric equivalent offering identical electrical specifications to the U2C-E3/52T with marginally higher reverse recovery time (30 ns vs. 27 ns). This part maintains Active product status and full RoHS3 compliance. Selection is appropriate for direct replacement applications with no design modifications required.

STPS3150U (STMicroelectronics) employs Schottky technology with 3 A current rating and lower forward voltage (820 mV @ 3 A). This part exceeds the 2 A requirement and operates at higher maximum junction temperature (175°C). Selection is appropriate when lower forward voltage drop or higher current capacity provides system-level benefits. Schottky technology characteristics must be verified for application compatibility.

ES2C-13-F (Diodes Incorporated) is a manufacturer-recommended alternative with identical 150 V / 2 A ratings and faster reverse recovery time (25 ns). Forward voltage is marginally higher (920 mV @ 2 A). This part maintains Active product status and full RoHS3 compliance. Selection is appropriate for applications where faster switching performance is beneficial.

MURS115T3G (onsemi) is designated as Last Time Buy product status. This part meets 150 V / 2 A electrical requirements with extended operating temperature range (-65°C ~ 175°C). Forward voltage specification is provided at 1 A rather than 2 A. Selection is not recommended for new designs due to Last Time Buy status; existing inventory may be utilized for legacy system support only.

ES2C (Diotec) is a parametric equivalent with identical 150 V / 2 A ratings and fastest reverse recovery time (20 ns). This part maintains Active product status and RoHS3 compliance. Operating temperature range is -50°C ~ 150°C. Selection is appropriate for applications requiring optimized switching performance.

Frequently Asked Questions (FAQ)

Q: Can the ES2C-E3/52T directly replace the U2C-E3/52T without PCB modifications?

A: Yes. The ES2C-E3/52T is a parametric equivalent with identical voltage (150 V), current (2 A), and package specifications (DO-214AA SMB). Both parts are manufactured by Vishay and maintain identical operating temperature ranges (-55°C ~ 150°C). No PCB layout or design changes are required.

Q: What is the primary difference between the U2C-E3/52T and STPS3150U?

A: The STPS3150U is a Schottky diode with 3 A current rating versus the 2 A Standard diode technology of the U2C-E3/52T. Both maintain 150 V reverse voltage and DO-214AA package compatibility. The Schottky technology provides lower forward voltage (820 mV @ 3 A vs. 900 mV @ 2 A) and higher maximum junction temperature (175°C vs. 150°C). Application circuit analysis is required to confirm Schottky characteristics are compatible with system requirements.

Q: Why is MURS115T3G listed as Last Time Buy?

A: MURS115T3G is designated Last Time Buy by onsemi, indicating the manufacturer has announced end-of-life for this product. While electrical specifications meet the 150 V / 2 A requirements, this part should not be selected for new product designs. Existing inventory may be used for legacy system support or field replacements only.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (ES2C-E3/52T, STPS3150U, ES2C-13-F, MURS115T3G, and ES2C) are RoHS3 compliant. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard PCB assembly processes.

Q: What is the significance of reverse recovery time (trr) differences among the substitutes?

A: Reverse recovery time indicates the speed at which the diode transitions from forward conduction to reverse blocking. The U2C-E3/52T specifies 27 ns. Substitute parts range from 20 ns (ES2C, fastest) to 35 ns (MURS115T3G, slowest). Faster recovery times reduce switching losses in high-frequency applications. Selection depends on circuit operating frequency and thermal management requirements.

Q: Can ES2C from Diotec be used interchangeably with ES2C-E3/52T from Vishay?

A: Both parts meet 150 V / 2 A electrical specifications and DO-214AA package requirements. However, ES2C (Diotec) specifies operating temperature range of -50°C ~ 150°C versus -55°C ~ 150°C for ES2C-E3/52T (Vishay). For applications requiring operation below -50°C, the Vishay part is required. For standard temperature range applications (-50°C to +150°C), both parts are functionally equivalent.

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

A: All substitute parts are available in surface mount DO-214AA (SMB) package format. Packaging options vary by manufacturer: ES2C-E3/52T and MURS115T3G are supplied in Tape & Reel (TR) format; STPS3150U is available in Cut Tape (CT) & Digi-Reel® format; ES2C-13-F is supplied in Tape & Reel (TR) format. Verify packaging format compatibility with assembly equipment and procurement requirements.

Q: Is forward voltage specification consistent across all substitute parts?

A: No. Forward voltage specifications vary by manufacturer and measurement conditions. U2C-E3/52T specifies 900 mV @ 2 A; ES2C-13-F specifies 920 mV @ 2 A; STPS3150U specifies 820 mV @ 3 A (Schottky technology); MURS115T3G specifies 875 mV @ 1 A. Circuit designs sensitive to forward voltage drop must account for these variations in power dissipation and thermal calculations.

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