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

Diodes Incorporated US1K-13-F

Name: US1K-13-F
Brand: Diodes Incorporated
SKU: US1K-13-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: US1K-13-F

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: US1K-13-F.pdf

Description:: DIODE GEN PURP 800V 1A SMA

Quantity:: RFQ Add To RFQ list

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Inventory:49,939

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Product details

Overview

US1K-13-F from Diodes Incorporated is a 1.0A surface-mount ultra-fast rectifier diode with 800V peak repetitive reverse voltage (V_RRM), 50ns reverse recovery time (t_rr), and SMA package. It delivers high-efficiency AC/DC conversion in switch-mode power supplies, offering surge robustness (30A I_FSM) and low forward voltage drop (1.7V @ 1.0A) for thermal efficiency in compact power stages.

For engineers reviewing the US1K-13-F datasheet, US1K-13-F pinout, US1K-13-F application, or US1K-13-F equivalent, this device is selected for high-frequency rectification where fast recovery, low leakage (<5.0µA @ 25°C), and RoHS-compliant lead-free plating are critical in industrial and consumer SMPS designs.

Technical Context

This ultra-fast rectifier operates as a unidirectional current switch in single-phase bridge or flyback output stages. Its glass-passivated die construction ensures stable junction behavior under thermal cycling, while the 30°C/W junction-to-terminal thermal resistance supports reliable 1.0A average current handling at T_T = +75°C.

The device exhibits defined dynamic characteristics: t_rr = 50ns measured at I_F = 0.5A, I_R = 1.0A, I_rr = 0.25A; typical junction capacitance C_T = 10pF at 1.0MHz and 4.0V reverse bias - enabling predictable EMI performance in kHz–MHz switching topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - Withstands peak reverse transients up to 800V without breakdown in AC line input or flyback clamp circuits.
I_O	1.0 A @ T_T = +75°C - Sustains continuous DC output current in compact, thermally constrained PCB layouts.
t_rr	50 ns - Minimizes switching loss and voltage overshoot during turn-off in 50–500kHz SMPS designs.
V_FM	1.7 V @ I_F = 1.0A - Limits conduction loss to ≤1.7W per diode, reducing heatsink requirements in high-density converters.
I_FSM	30 A (8.3ms half-sine) - Survives inrush and fault currents in mains-connected power supplies without parametric shift.
I_RM	5.0 µA @ 25°C - Ensures minimal leakage-induced standby power loss in energy-efficient adapters and LED drivers.

Pinout & Package

SMA (DO-214AC) surface-mount package: molded plastic case, UL 94V-0 rated, cathode band polarity marking, matte tin-plated terminals, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry node during forward conduction	Connected to transformer secondary or switching node; must handle full load current and transient spikes.
Cathode	Current exit node during forward conduction	Connected to output capacitor or common return; polarity marked by visible band on package body.

Key Features

Feature	Design Value
Glass passivated die	Prevents surface contamination and leakage path formation under humid or contaminated board environments.
Ultra-fast 50ns recovery	Reduces reverse recovery charge (Q_rr) to <15nC, lowering EMI generation and MOSFET stress in synchronous rectified topologies.
Lead-free, halogen-free "Green" construction	Meets IPC-J-STD-020 Level 1 reflow profile and EU RoHS 2011/65/EU compliance without derating.
30A surge rating	Enables use without external fusing in Class II AC/DC adapters meeting IEC 62368-1 fault withstand requirements.

Applications

AC-DC Adapter Output Rectification

DC-DC Flyback Secondary Side

Use Scenario: 12V/1A isolated output stage in wall-wart adapters powering IoT sensors and USB peripherals.

IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC; timing-critical during MOSFET turn-off transitions.

Use Value: 50ns t_rr prevents cross-conduction losses and reduces output ripple by limiting reverse recovery tail current.

Use Scenario: Secondary-side rectification in 24V/0.5A industrial control power supply with 100kHz switching frequency.

IC Role / Device Role / Timing Role: High-speed freewheeling diode clamping transformer leakage energy; operates at fixed duty cycle with precise voltage threshold conduction.

Use Value: 1.7V V_FM limits conduction loss to 0.85W at full load, enabling natural convection cooling on 2-layer PCBs.

LED Driver Constant-Current Stage

Industrial PLC Power Input Protection

Use Scenario: Output rectifier in constant-current buck-boost LED driver for street lighting (36–48V output, 700mA).

IC Role / Device Role / Timing Role: Main current path during inductor discharge phase; conducts continuously during PWM off-time.

Use Value: 800V V_RRM accommodates 400VAC line surges and inductive kickback from long LED strings without avalanche stress.

Use Scenario: Input-stage rectifier in 24VDC PLC power module accepting 100–240VAC input via internal transformer.

IC Role / Device Role / Timing Role: Primary AC input rectifier in full-wave bridge configuration; handles 50Hz line frequency and harmonic content.

Use Value: 30A I_FSM rating ensures survival during hot-plug events and brownout recovery without parameter drift.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R08	Same 800V V_RRM, but t_rr = 75ns; higher V_F = 1.85V @ 1A; TO-277 package (3-pin, anode/cathode/common).	Requires different footprint and thermal pad layout; slower recovery increases switching loss in >200kHz designs.	Select when legacy TO-277 assembly infrastructure exists and 75ns recovery is acceptable.
SB180	Lower 80V V_RRM; Schottky architecture (no recovery time); 0.85V V_F; SMA package.	Not suitable for 800V line-referenced applications; limited to low-voltage DC-DC outputs ≤48V.	Choose only for sub-100V secondary-side rectification where zero-recovery and low V_F outweigh voltage limitation.

Compared with STTH1R08 and SB180, US1K-13-F uniquely balances 800V blocking, 50ns speed, and SMA compatibility - making it optimal for new 100–500kHz AC/DC designs requiring both safety margin and efficiency without footprint redesign.

Availability

US1K-13-F is available at Aetrix Electronics and suitable for AC-DC adapters, industrial DC-DC converters, and LED driver power stages requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle assurance.

Supply support for US1K-13-F 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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The US1x series targets cost-sensitive, high-volume power conversion applications where ultra-fast recovery, robust surge capability, and automated assembly compatibility are essential design requirements.

FAQ

What is the maximum junction temperature for US1K-13-F?

The absolute maximum junction temperature is +150°C, with continuous operation rated up to +125°C junction under derated current conditions. Thermal design must maintain T_J ≤125°C at full 1.0A load using the specified 30°C/W R_θJT and appropriate copper area per AP02001 pad layout.

Is US1K-13-F suitable for use in a PFC boost diode position?

No - US1K-13-F is not rated for continuous high-dv/dt or high-peak-current PFC boost operation. Its 50ns t_rr and 30A I_FSM are optimized for output rectification, not active-clamp or boost diode roles where soft recovery and higher surge endurance are required.

Does US1K-13-F have a specified avalanche energy rating?

No - the datasheet does not specify avalanche energy (E_AS) or repetitive avalanche capability. The device is designed for non-avalanche operation; sustained reverse voltage beyond 800V may cause irreversible junction damage.

Can US1K-13-F be used in place of US1M-13-F in a 1000V design?

No - US1K-13-F has 800V V_RRM, while US1M-13-F is rated for 1000V. Substituting US1K-13-F in a 1000V application risks premature breakdown under line surges or reflected transients; voltage derating rules require ≥20% margin, making US1K-13-F unsuitable.

US1K-13-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 800 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 1 A

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

Reverse Recovery Time (trr):: 75 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 800 V

Capacitance @ Vr, F:: 10pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMA

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

US1K-13-F FAQ

1.How can I place an order for US1K-13-F through Aetrix?

Please submit a Request for Quotation (RFQ) for US1K-13-F 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 US1K-13-F reliable?

The price and inventory of US1K-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for US1K-13-F is usually 5 days.

3.What payment methods are accepted for US1K-13-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US1K-13-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for US1K-13-F?

US1K-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your US1K-13-F 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 US1K-13-F?

For technical support, including US1K-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US1K-13-F requirements.

6.How does Aetrix verify that US1K-13-F is sourced from the original manufacturer or authorized distributors?

All US1K-13-F 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 US1K-13-F meets industry standards.

7.What is the process for return or replacement of US1K-13-F?

All US1K-13-F units undergo pre-shipment inspection (PSI). If there is an issue with US1K-13-F, 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 US1K-13-F part is unused and in its original packaging.

Return procedure for US1K-13-F:

1.Submit a request within 90 days.

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

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