U2B-E3/5BT Equivalent & Substitute Parts

Part Overview

The U2B-E3/5BT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 100 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 a fast recovery diode with a reverse recovery time of 27 ns and is actively produced with ROHS3 compliance. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design alternatives while maintaining electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	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 @ 100 V	µA
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the U2B-E3/5BT are classified based on electrical parameter equivalence and mechanical compatibility. The primary substitution criteria are:

Electrical Parameters:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 2 A minimum
Package / Case: DO-214AA or SMB equivalent
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum

Technology Classification:

Standard rectifier diodes with fast recovery characteristics (≤ 500ns)
Schottky diodes with equivalent voltage and current ratings

Compliance Requirements:

ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts are grouped into three categories: Parametric Equivalents (identical electrical specifications with packaging variations), Direct Manufacturer Alternatives (different technology with equivalent performance), and Manufacturer-Recommended Substitutes (alternative manufacturers meeting electrical requirements).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 2A [mV]	trr [ns]	Ir @ Vr [µA]	Package	Technology	Temp Range [°C]	Packaging Type
U2B-E3/5BT	Vishay	100	2	900	27	10 @ 100V	DO-214AA	Standard	-55 to 150	Tape & Reel
ES2B-E3/52T	Vishay	100	2	900	30	10 @ 100V	DO-214AA	Standard	-55 to 150	Cut Tape
ES2B-E3/5BT	Vishay	100	2	900	30	10 @ 100V	DO-214AA	Standard	-55 to 150	Tape & Reel
ES2BHE3_A/H	Vishay	100	2	900	20	10 @ 50V	DO-214AA	Standard	-55 to 150	Tape & Reel
ES2BHE3_A/I	Vishay	100	2	900	20	10 @ 50V	DO-214AA	Standard	-55 to 150	Tape & Reel
STPS2H100U	STMicroelectronics	100	2	790	—	1 @ 100V	DO-214AA	Schottky	-55 to 175	Cut Tape & Digi-Reel
CGRB202-G	Comchip Technology	100	2	1100	—	5 @ 100V	DO-214AA	Standard	-55 to 150	Tape & Reel
ES2B-13-F	Diodes Incorporated	100	2	920	25	5 @ 100V	DO-214AA	Standard	-55 to 150	Tape & Reel
ES2B	YAGEO	100	2	950	—	—	DO-214AA	Standard	—	Tape & Reel

Engineering Selection Recommendations

Parametric Equivalents (Vishay ES2B Series): ES2B-E3/52T, ES2B-E3/5BT, ES2BHE3_A/H, and ES2BHE3_A/I are parametric equivalents manufactured by Vishay. These parts maintain the 100 V / 2 A electrical specification with identical forward voltage characteristics. The ES2BHE3_A/H and ES2BHE3_A/I variants include AEC-Q101 automotive qualification and reduced reverse recovery time (20 ns). Selection between these variants depends on packaging requirements (Cut Tape versus Tape & Reel) and automotive-grade certification needs.

Direct Manufacturer Alternative (STMicroelectronics STPS2H100U): The STPS2H100U is a Schottky diode technology alternative with identical voltage and current ratings. This part offers lower forward voltage (790 mV versus 900 mV) and lower reverse leakage current (1 µA versus 10 µA), resulting in reduced power dissipation. The maximum junction temperature extends to 175°C. Schottky technology is suitable for applications where lower forward voltage drop is beneficial. This part is available in higher inventory quantities.

Manufacturer-Recommended Substitutes: CGRB202-G (Comchip Technology) and ES2B-13-F (Diodes Incorporated) meet the core electrical requirements of 100 V / 2 A operation in DO-214AA packaging. CGRB202-G exhibits higher forward voltage (1.1 V) and lower reverse leakage (5 µA). ES2B-13-F provides 920 mV forward voltage with 25 ns reverse recovery time and 5 µA reverse leakage. Both parts are ROHS3 compliant with MSL 1 rating.

Generic Equivalent (YAGEO ES2B): The YAGEO ES2B provides basic parametric equivalence with 100 V / 2 A specification. Limited detailed specifications are provided for this part.

All substitute parts maintain ROHS3 compliance, MSL 1 moisture sensitivity rating, and surface mount DO-214AA packaging compatibility with the original U2B-E3/5BT.

Frequently Asked Questions (FAQ)

Q: Can ES2B-E3/52T replace U2B-E3/5BT in production? A: Yes. ES2B-E3/52T is a parametric equivalent with identical electrical specifications (100 V, 2 A, 900 mV forward voltage). The primary difference is packaging format: ES2B-E3/52T is supplied in Cut Tape (CT) while U2B-E3/5BT is supplied in Tape & Reel (TR). Both are surface mount DO-214AA packages suitable for automated assembly.

Q: What is the difference between standard rectifier and Schottky diode substitutes? A: The STPS2H100U is a Schottky diode technology alternative. Schottky diodes exhibit lower forward voltage drop (790 mV versus 900 mV for standard rectifiers), resulting in reduced power dissipation and heat generation. Schottky diodes are suitable for applications prioritizing efficiency. Both technologies meet the 100 V / 2 A electrical requirements and DO-214AA packaging.

Q: Are automotive-grade variants (ES2BHE3_A/H, ES2BHE3_A/I) direct replacements? A: Yes. The ES2BHE3_A/H and ES2BHE3_A/I variants are direct electrical replacements with AEC-Q101 automotive qualification. These parts feature improved reverse recovery time (20 ns versus 27 ns) and are suitable for automotive applications requiring qualification documentation. All other electrical parameters remain equivalent to the standard U2B-E3/5BT.

Q: What packaging options are available for equivalent parts? A: Equivalent parts are available in two packaging formats: Tape & Reel (TR) for high-volume automated assembly and Cut Tape (CT) for lower-volume or manual assembly applications. All parts use the DO-214AA (SMB) surface mount package with identical PCB footprint and soldering requirements.

Q: Can CGRB202-G be used as a direct substitute despite higher forward voltage? A: CGRB202-G meets the core electrical requirements (100 V, 2 A, DO-214AA package) but exhibits higher forward voltage (1.1 V versus 900 mV). This results in approximately 200 mV additional voltage drop per diode. Applications sensitive to forward voltage characteristics should evaluate this parameter before substitution.

Q: What is the inventory status of substitute parts? A: Inventory availability varies by part number. STPS2H100U (STMicroelectronics) has the highest inventory at 105,200 pieces. Vishay ES2B variants range from 3,350 to 8,154 pieces. Comchip CGRB202-G has 16,075 pieces. Diodes Incorporated ES2B-13-F has 2,163 pieces. YAGEO ES2B has 55,400 pieces. Original U2B-E3/5BT has 784 pieces in stock.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant with Moisture Sensitivity Level (MSL) 1 (Unlimited), matching the compliance profile of the original U2B-E3/5BT.

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