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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Vishay General Semiconductor - Diodes Division UH2C-E3/5BT

Name: UH2C-E3/5BT
Brand: Vishay General Semiconductor - Diodes Division
SKU: UH2C-E3/5BT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: UH2C-E3/5BT

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: UH2C-E3/5BT.pdf

Description:: DIODE GEN PURP 150V 2A DO214AA

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Product details

Overview

UH2C-E3/5BT from Vishay General Semiconductor is a surface-mount ultrafast rectifier diode in DO-214AA (SMB) package, rated for 150 V repetitive peak reverse voltage, 2.0 A average forward current, and 25 ns maximum reverse recovery time. It features oxide planar chip junction, AEC-Q101 qualification, and operates up to 175 °C junction temperature-used in secondary rectification and freewheeling in high-frequency DC/DC converters for automotive and industrial power supplies.

For engineers reviewing the UH2C-E3/5BT datasheet, UH2C-E3/5BT pinout, UH2C-E3/5BT application, or UH2C-E3/5BT equivalent, key selection criteria include its 150 V V_RRM, 25 ns trr, 0.69 V forward voltage at 2.0 A, AEC-Q101 qualification, and DO-214AA thermal performance with R_θJA = 105 °C/W under standard mounting conditions.

Technical Context

The UH2C-E3/5BT employs an oxide planar chip junction architecture enabling ultrafast switching with soft recovery characteristics (S = 0.3 at 125 °C), minimizing EMI in high-frequency power conversion. Its 25 ns trr is measured under IF = 0.5 A, IR = 1.0 A, I_rr = 0.25 A conditions, supporting operation in hard-switched topologies up to several hundred kHz.

Thermally, it delivers 175 °C maximum junction temperature and 50 A non-repetitive surge capability (8.3 ms half-sine), with R_θJM = 15 °C/W indicating efficient heat transfer to the PCB mount-critical for compact, high-power-density automotive and industrial designs where ambient temperatures exceed 125 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - supports input rails up to 100 V DC with safety margin in automotive 48 V systems and industrial SMPS.
I_F(AV)	2.0 A - continuous conduction mode output rectification in sub-50 W isolated flyback or buck-boost converters.
t_rr	25 ns max - enables stable operation at switching frequencies ≥300 kHz without excessive switching loss or ringing.
V_F @ 2.0 A	0.69 V - reduces conduction loss to ~1.38 W at full load, easing thermal design in SMB footprint.
T_J max	175 °C - allows deployment in under-hood automotive modules and sealed industrial enclosures without derating.
Q_rr	55 nC typical - limits reverse recovery charge-induced voltage spikes across MOSFETs in synchronous rectified topologies.
R_θJA	105 °C/W - requires minimum recommended copper pad area per Vishay layout guidelines to maintain safe junction temperature.

Pinout & Package

Package: DO-214AA (SMB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to transformer secondary or switch node; must handle 50 A surge without bond wire failure.
Cathode	Forward current exit / reverse blocking terminal	Marked with color band; ties to output rail or ground return path; withstands 150 V reverse bias continuously.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive power electronics including engine control units and ADAS power supplies.
Ultrafast recovery (25 ns)	Reduces switching losses and EMI generation in high-frequency DC/DC converters operating above 200 kHz.
Oxide planar chip junction	Ensures consistent trr and VF across temperature and lifetime, improving reliability in thermally cycling environments.
MSL Level 1 (260 °C)	Compatible with standard lead-free reflow profiles without preconditioning or special handling.
Soft recovery (S = 0.3)	Minimizes voltage overshoot during turn-off, reducing stress on adjacent MOSFETs and snubber requirements.

Applications

Automotive DC/DC Converters	Industrial SMPS Output Rectification
Use Scenario: Step-down conversion from 48 V battery to 12 V or 5 V for infotainment and body control modules. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter, conducting during low-side FET off-time. Use Value: 150 V V_RRM and 175 °C T_J max ensure robust operation under load dump transients and under-hood thermal stress.	Use Scenario: Secondary-side rectification in 24–48 V input industrial flyback or forward converters powering PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated DC output; recovers before next switching cycle begins. Use Value: 25 ns t_rr and 55 nC Q_rr reduce switching loss and improve efficiency >90% at 250 kHz switching frequency.
High-Temperature Power Supplies	Consumer AC/DC Adapters
Use Scenario: Enclosed power supplies operating in ambient temperatures up to 105 °C, such as LED drivers in recessed lighting fixtures. IC Role / Device Role / Timing Role: Output rectifier sustaining continuous 2.0 A load while dissipating <1.5 W conduction loss. Use Value: R_θJA = 105 °C/W and 175 °C T_J max allow full-rated current without forced air cooling or oversized heatsinks.	Use Scenario: Compact wall adapters for laptops and monitors requiring high efficiency and low EMI. IC Role / Device Role / Timing Role: Secondary-side ultrafast rectifier replacing slower FR-type diodes to meet CoC Tier 2 efficiency targets. Use Value: 0.69 V V_F at 2.0 A lowers conduction loss by ~15% vs. comparable 1.1 V FR diodes, directly improving light-load efficiency.

Automotive DC/DC Converters

Industrial SMPS Output Rectification

Use Scenario: Step-down conversion from 48 V battery to 12 V or 5 V for infotainment and body control modules.

IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter, conducting during low-side FET off-time.

Use Value: 150 V V_RRM and 175 °C T_J max ensure robust operation under load dump transients and under-hood thermal stress.

Use Scenario: Secondary-side rectification in 24–48 V input industrial flyback or forward converters powering PLC I/O modules.

IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated DC output; recovers before next switching cycle begins.

Use Value: 25 ns t_rr and 55 nC Q_rr reduce switching loss and improve efficiency >90% at 250 kHz switching frequency.

High-Temperature Power Supplies

Consumer AC/DC Adapters

Use Scenario: Enclosed power supplies operating in ambient temperatures up to 105 °C, such as LED drivers in recessed lighting fixtures.

IC Role / Device Role / Timing Role: Output rectifier sustaining continuous 2.0 A load while dissipating <1.5 W conduction loss.

Use Value: R_θJA = 105 °C/W and 175 °C T_J max allow full-rated current without forced air cooling or oversized heatsinks.

Use Scenario: Compact wall adapters for laptops and monitors requiring high efficiency and low EMI.

IC Role / Device Role / Timing Role: Secondary-side ultrafast rectifier replacing slower FR-type diodes to meet CoC Tier 2 efficiency targets.

Use Value: 0.69 V V_F at 2.0 A lowers conduction loss by ~15% vs. comparable 1.1 V FR diodes, directly improving light-load efficiency.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R06	600 V V_RRM, 2.0 A I_F(AV), 35 ns t_rr, TO-220AC package	Higher voltage rating but slower recovery and through-hole mounting	Choose when higher reverse voltage margin is needed and board space allows larger package.
SS215	150 V V_RRM, 2.0 A I_F(AV), 35 ns t_rr, DO-214AC (SMA) package	Same voltage/current rating but slower recovery and smaller thermal mass (R_θJA ≈ 140 °C/W)	Acceptable for lower-power or lower-frequency designs where 25 ns trr is not critical.

Compared with STTH2R06 and SS215, the UH2C-E3/5BT offers superior high-frequency performance (25 ns trr), AEC-Q101 qualification, and optimized thermal resistance (105 °C/W) in the DO-214AA footprint-making it preferred for space-constrained, high-efficiency automotive and industrial converters demanding fast, reliable recovery.

Availability

UH2C-E3/5BT is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS output rectification, and high-temperature power supplies requiring stable component supply, RoHS compliance, and AEC-Q101 qualification.

Supply support for UH2C-E3/5BT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, thermal performance, and automotive-grade qualification.

The UH2C-E3/5BT belongs to Vishay's UH2x ultrafast rectifier family, engineered specifically for high-frequency, high-temperature secondary-side rectification and freewheeling in automotive and industrial power conversion systems.

FAQ

What is the maximum junction temperature rating for the UH2C-E3/5BT?

The UH2C-E3/5BT has a maximum junction temperature (T_J) of +175 °C, verified per AEC-Q101 stress testing. This rating enables reliable operation in under-hood automotive environments and sealed industrial enclosures where ambient temperatures exceed 105 °C. The device maintains specified electrical parameters-including 25 ns t_rr and 0.69 V V_F-up to this limit when mounted per Vishay's recommended copper pad layout.

Is the UH2C-E3/5BT RoHS compliant and lead-free?

Yes, the UH2C-E3/5BT is RoHS compliant and lead-free, as indicated by the "E3" suffix per Vishay's material categorization policy. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, and it passes JESD 201 Class 1A whisker testing. The device complies with Directive 2011/65/EU and is suitable for lead-free reflow processes up to 260 °C (MSL Level 1).

What does the "5BT" in UH2C-E3/5BT signify?

The "5BT" in UH2C-E3/5BT is Vishay's package code denoting 13-inch diameter plastic tape and reel packaging, with a base quantity of 3200 units per reel. This format supports automated SMT placement and is compatible with standard pick-and-place equipment. The "E3" suffix confirms RoHS compliance and commercial-grade qualification, distinguishing it from the "HE3" variant which adds AEC-Q101 qualification.

How does the UH2C-E3/5BT compare to the UH2B-E3/5BT and UH2D-E3/5BT?

The UH2C-E3/5BT shares identical package (DO-214AA), thermal characteristics (R_θJA = 105 °C/W), and electrical construction with UH2B-E3/5BT and UH2D-E3/5BT, differing only in maximum repetitive peak reverse voltage: UH2B = 100 V, UH2C = 150 V, UH2D = 200 V. All three offer 2.0 A I_F(AV), 25 ns t_rr, and AEC-Q101 qualification in the HE3 version. Select UH2C-E3/5BT when 150 V V_RRM best matches system overvoltage margins.

What is the reverse recovery charge (Q_rr) of the UH2C-E3/5BT, and why does it matter?

The UH2C-E3/5BT has a typical reverse recovery charge (Q_rr) of 55 nC, measured at I_F = 2.0 A, dI/dt = 200 A/μs, and V_R = 200 V. This parameter directly impacts switching loss and voltage overshoot in hard-switched topologies. Lower Q_rr reduces energy dissipated during turn-off and minimizes stress on synchronous MOSFETs-critical for achieving >90% efficiency in high-frequency DC/DC converters using the UH2C-E3/5BT.

UH2C-E3/5BT Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: -

Package/Case:: DO-214AA, SMB

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 150 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1.05 V @ 2 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 2 µA @ 150 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMB)

Operating Temperature - Junction:: -55°C ~ 175°C

UH2C-E3/5BT FAQ

1.How can I place an order for UH2C-E3/5BT through Aetrix?

Please submit a Request for Quotation (RFQ) for UH2C-E3/5BT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for UH2C-E3/5BT reliable?

The price and inventory of UH2C-E3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UH2C-E3/5BT is usually 5 days.

3.What payment methods are accepted for UH2C-E3/5BT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UH2C-E3/5BT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for UH2C-E3/5BT?

UH2C-E3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your UH2C-E3/5BT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for UH2C-E3/5BT?

For technical support, including UH2C-E3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UH2C-E3/5BT requirements.

6.How does Aetrix verify that UH2C-E3/5BT is sourced from the original manufacturer or authorized distributors?

All UH2C-E3/5BT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that UH2C-E3/5BT meets industry standards.

7.What is the process for return or replacement of UH2C-E3/5BT?

All UH2C-E3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with UH2C-E3/5BT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The UH2C-E3/5BT part is unused and in its original packaging.

Return procedure for UH2C-E3/5BT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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