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

Diodes Incorporated UF2002-T

Name: UF2002-T
Brand: Diodes Incorporated
SKU: UF2002-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: UF2002-T

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: UF2002-T.pdf

Description:: DIODE GEN PURP 100V 2A DO15

Quantity:: RFQ Add To RFQ list

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Inventory:9,465

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Product details

Overview

UF2002-T from Diodes Incorporated is a 2.0A ultra-fast rectifier diode in DO-15 package, rated for 100V peak repetitive reverse voltage (V_RRM), 1.3V forward voltage at 2.0A (V_FM), and 75ns reverse recovery time (t_rr). It serves as a primary-side AC/DC input rectifier in compact offline switch-mode power supplies.

For engineers reviewing the UF2002-T datasheet, UF2002-T pinout, UF2002-T application, or UF2002-T equivalent, key selection criteria include V_RRM, t_rr, I_FSM, thermal resistance (R_θJA = 50°C/W), and DO-15 mechanical compatibility in high-frequency flyback and buck-derived converters.

Technical Context

This discrete silicon PN-junction rectifier uses diffused junction technology to achieve ultra-fast switching with low stored charge. Its 75ns reverse recovery time enables operation up to ~100kHz in hard-switched topologies without excessive switching loss or voltage overshoot.

The device supports 60A non-repetitive surge current (8.3ms half-sine) and maintains ≤100µA reverse leakage at +100°C, making it suitable for industrial power adapters where transient robustness and elevated ambient temperature stability are required.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum allowable repetitive reverse voltage before breakdown; sets minimum insulation margin for 85–265VAC input stages.
I_O	2.0 A @ T_A = +50°C - Continuous DC output current capability under standard heatsinking (9.5mm lead length).
V_FM	1.3 V @ I_F = 2.0A - Forward conduction loss directly impacts efficiency and thermal rise in rectifier stage.
t_rr	75 ns - Critical for minimizing turn-off losses and EMI in high-frequency SMPS; measured at I_F = 0.5A, I_R = 1.0A, I_rr = 0.25A.
R_θJA	50 °C/W - Junction-to-ambient thermal resistance defines maximum power dissipation in free-air PCB mounting.
I_FSM	60 A - Surge rating ensures survival during cold-start inrush and line-voltage transients.
I_RM	100 µA @ +100°C - Low high-temperature leakage preserves efficiency and reliability in enclosed, thermally constrained enclosures.

Pinout & Package

DO-15 molded plastic package (UL 94V-0), axial leaded, cathode indicated by band. Weight: 0.4 g. Moisture sensitivity level: J-STD-020 Level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to AC input phase or transformer secondary winding; must withstand full surge current path.
Cathode	Forward current exit / reverse blocking terminal	Connected to bulk capacitor positive rail; polarity marking (band) prevents reverse installation in PCB layout.

Key Features

Feature	Design Value
Ultra-fast recovery (75ns)	Reduces switching loss and voltage spikes in 50–100kHz flyback and forward converters.
60A surge rating	Withstands cold-start inrush and lightning-induced line surges without degradation.
Low 100µA leakage at +100°C	Maintains efficiency and prevents thermal runaway in sealed, high-ambient environments.
DO-15 RoHS-compliant packaging	Enables direct replacement in legacy through-hole power supply designs with automated assembly support.

Applications

AC/DC Adapter Input Rectification

Industrial DC Power Supply Front-End

Use Scenario: 85–265VAC input rectification in 15–30W wall adapters for consumer electronics.

IC Role / Device Role / Timing Role: Primary-side unidirectional current path; converts AC to pulsating DC prior to bulk capacitance.

Use Value: 75ns t_rr minimizes high-frequency ringing and EMI generation during zero-crossing transitions.

Use Scenario: Input stage of DIN-rail mounted 24V/48V industrial PSUs operating continuously at +70°C ambient.

IC Role / Device Role / Timing Role: High-reliability mains rectifier handling sustained load and occasional overvoltage events.

Use Value: 60A I_FSM and 100µA I_RM @ +100°C ensure long-term stability without derating in thermally demanding enclosures.

LED Driver Bulk Rectification

UPS Charger Input Stage

Use Scenario: Off-line LED driver for street lighting with wide-input voltage range and high thermal cycling.

IC Role / Device Role / Timing Role: Bridge or single-diode rectifier feeding PFC or constant-current controller IC.

Use Value: Diffused junction construction provides consistent t_rr across temperature, reducing output ripple variation over life.

Use Scenario: Input rectifier in online UPS battery charger modules requiring surge immunity and low leakage.

IC Role / Device Role / Timing Role: Converts utility AC to DC for battery charging circuitry; exposed to frequent grid disturbances.

Use Value: 100V V_RRM with 60A I_FSM meets IEC 61000-4-5 surge immunity requirements for Class III equipment.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-fast rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R01AP	TO-220AC package; 100V V_RRM; 65ns t_rr; higher I_O (2.5A @ +125°C case)	Requires heatsink; suited for higher-power, forced-air-cooled systems	Select when thermal budget exceeds DO-15 limits or >2A continuous current needed.
ON Semi MUR220	DO-15; 200V V_RRM; 75ns t_rr; 1.8V V_FM @ 2A	Higher voltage rating but higher forward drop; same footprint	Choose only if system requires >100V blocking margin and can tolerate +0.5V conduction loss.

Compared with STTH2R01AP and MUR220, UF2002-T offers optimal balance of DO-15 mountability, 100V rating, 1.3V V_FM, and 75ns t_rr for cost-sensitive, space-constrained 2A AC/DC front-ends where thermal headroom is moderate.

Availability

UF2002-T is available at Aetrix Electronics and suitable for AC/DC adapter design, industrial power supply front-end rectification, and LED driver bulk conversion requiring stable component supply and legacy DO-15 compatibility.

Supply support for UF2002-T 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

UF2002-T belongs to the UF200x ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency AC/DC conversion in compact power supplies where fast recovery and low leakage are critical.

FAQ

Is UF2002-T still in active production?

No - UF2002-T is officially marked obsolete per Diodes Incorporated's DS25007 Rev. 5-4 (May 2023). Aetrix Electronics holds remaining authorized inventory and supports last-time-buy programs with full traceability and documentation for legacy design continuity.

Can UF2002-T replace UF2001-T in existing designs?

Yes - UF2002-T is a direct functional upgrade from UF2001-T, sharing identical DO-15 package, pinout, and thermal characteristics, while offering higher 100V V_RRM (vs. 50V) and same 75ns t_rr. No layout or firmware changes are required.

What is the maximum operating temperature for UF2002-T?

The junction and storage temperature range is –65°C to +150°C. At +150°C, forward voltage drops slightly (~1.15V), and reverse leakage rises to ~1.2mA - design derating per Figure 1 is required above +50°C ambient for 2.0A continuous operation.

Does UF2002-T meet automotive qualification standards?

No - UF2002-T is not AEC-Q101 qualified. Diodes states that automotive-grade equivalents require explicit change control, PPAP capability, and IATF 16949 manufacturing - contact Diodes directly for qualified alternatives such as the B1100Q series.

UF2002-T Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-204AC, DO-15, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 2 A

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

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 100 V

Capacitance @ Vr, F:: 50pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-15

Operating Temperature - Junction:: -65°C ~ 150°C

UF2002-T FAQ

1.How can I place an order for UF2002-T through Aetrix?

Please submit a Request for Quotation (RFQ) for UF2002-T 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 UF2002-T reliable?

The price and inventory of UF2002-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UF2002-T is usually 5 days.

3.What payment methods are accepted for UF2002-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UF2002-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for UF2002-T?

UF2002-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your UF2002-T 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 UF2002-T?

For technical support, including UF2002-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UF2002-T requirements.

6.How does Aetrix verify that UF2002-T is sourced from the original manufacturer or authorized distributors?

All UF2002-T 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 UF2002-T meets industry standards.

7.What is the process for return or replacement of UF2002-T?

All UF2002-T units undergo pre-shipment inspection (PSI). If there is an issue with UF2002-T, 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 UF2002-T part is unused and in its original packaging.

Return procedure for UF2002-T:

1.Submit a request within 90 days.

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

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