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

Taiwan Semiconductor Corporation US1JHR3G

Name: US1JHR3G
Brand: Taiwan Semiconductor Corporation
SKU: US1JHR3G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: US1JHR3G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: US1JHR3G.pdf

Description:: DIODE GEN PURP 600V 1A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:5,713

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Product details

Overview

US1JHR3G from Taiwan Semiconductor is a 600 V, 1 A ultrafast surface-mount rectifier in DO-214AC (SMA) package, featuring 75 ns reverse recovery time, 1.7 V max forward voltage at 1 A, and 5 µA max reverse leakage at 25°C - deployed in DC-DC converters and snubber circuits for high-efficiency power conversion.

For engineers reviewing the US1JHR3G datasheet, US1JHR3G pinout, US1JHR3G application, or US1JHR3G equivalent, key selection criteria include repetitive peak reverse voltage (600 V), junction-to-lead thermal resistance (27 °C/W), moisture sensitivity level (MSL 1), RoHS/halogen-free compliance, and DO-214AC mechanical compatibility with automated SMT placement.

Technical Context

This single-die, unidirectional silicon rectifier uses glass-passivated junction technology to achieve stable ultrafast switching performance across industrial temperature range (–55°C to +150°C). Its low stored charge and controlled minority-carrier lifetime enable efficient operation in high-frequency switching topologies.

The device exhibits 10 pF typical junction capacitance at 1 MHz and 4.0 V reverse bias, with thermal performance characterized by R_θJL = 27 °C/W and R_θJA = 75 °C/W - supporting reliable conduction under pulsed surge conditions up to 30 A (8.3 ms half-sine).

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 V - supports DC bus voltages up to 420 V RMS in AC-DC front-ends without derating
I_F	1 A continuous - rated for steady-state output rectification in sub-10 W SMPS designs
t_rr	75 ns max - minimizes switching losses in 100–500 kHz converters
V_F	1.7 V max at I_F = 1 A, T_J = 25°C - limits conduction loss to ≤1.7 W per diode at full load
I_R	5 µA max at V_R = 600 V, T_J = 25°C - ensures low standby leakage in high-impedance hold-up paths
R_θJL	27 °C/W - enables direct PCB copper pour heat sinking without external heatsink in low-power layouts

Pinout & Package

DO-214AC (SMA) surface-mount package with molded epoxy body (UL 94V-0), matte tin-plated leads, cathode band polarity marking, and 0.060 g mass. Lead finish complies with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry node	Connected to lower-potential side (e.g., switch node in flyback secondary, ground return in freewheeling path)
Cathode	Current exit node	Marked by band; ties to positive output rail or snubber capacitor anode in clamp circuits

Key Features

Feature	Design Value
Glass-passivated junction	Ensures long-term reliability under humidity and thermal cycling without hermetic sealing
MSL 1 rating	Allows unlimited floor life and reflow without baking - compatible with standard SMT assembly lines
Ultrafast t_rr = 75 ns	Reduces turn-off energy loss and EMI generation compared to standard recovery rectifiers
RoHS & halogen-free	Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally constrained end equipment

Applications

DC-DC Converter Output Rectification	Snubber Circuit Clamp Diode
Use Scenario: Secondary-side rectification in isolated 5–24 V, 5–10 W flyback or forward converters powering IoT sensors and industrial controllers. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC, operating at 100–300 kHz switching frequency. Use Value: 75 ns t_rr and 1.7 V V_F jointly reduce total power loss to <2.0 W, enabling compact thermally constrained PCB layouts.	Use Scenario: RCD clamp network across primary-side MOSFET in flyback converters handling 36–75 V input rails. IC Role / Device Role / Timing Role: Fast-recovery clamp diode conducting transient voltage spikes during MOSFET turn-off, limiting dv/dt stress. Use Value: Low Q_rr and 600 V V_RRM prevent voltage overshoot beyond MOSFET rating while minimizing clamp dissipation.
Freewheeling Diode in Buck Regulators	Lighting Driver Freewheel Path
Use Scenario: Inductor current recirculation path in 12 V input, 3.3 V/2 A synchronous buck regulators for FPGA core supplies. IC Role / Device Role / Timing Role: Passive freewheeling element completing current loop when high-side switch is off; operates at duty cycles >70%. Use Value: 1 A I_F rating and MSL 1 compatibility support high-volume automated production without post-assembly moisture concerns.	Use Scenario: Current续流 path in constant-current LED drivers for commercial downlights using 24 V DC input. IC Role / Device Role / Timing Role: Conducts inductor current during PWM off-time in buck-derived LED topology, handling 100–1000 Hz dimming frequencies. Use Value: 10 pF C_J minimizes capacitive coupling noise into analog current sense circuitry, preserving dimming linearity.

DC-DC Converter Output Rectification

Snubber Circuit Clamp Diode

Use Scenario: Secondary-side rectification in isolated 5–24 V, 5–10 W flyback or forward converters powering IoT sensors and industrial controllers.

IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC, operating at 100–300 kHz switching frequency.

Use Value: 75 ns t_rr and 1.7 V V_F jointly reduce total power loss to <2.0 W, enabling compact thermally constrained PCB layouts.

Use Scenario: RCD clamp network across primary-side MOSFET in flyback converters handling 36–75 V input rails.

IC Role / Device Role / Timing Role: Fast-recovery clamp diode conducting transient voltage spikes during MOSFET turn-off, limiting dv/dt stress.

Use Value: Low Q_rr and 600 V V_RRM prevent voltage overshoot beyond MOSFET rating while minimizing clamp dissipation.

Freewheeling Diode in Buck Regulators

Lighting Driver Freewheel Path

Use Scenario: Inductor current recirculation path in 12 V input, 3.3 V/2 A synchronous buck regulators for FPGA core supplies.

IC Role / Device Role / Timing Role: Passive freewheeling element completing current loop when high-side switch is off; operates at duty cycles >70%.

Use Value: 1 A I_F rating and MSL 1 compatibility support high-volume automated production without post-assembly moisture concerns.

Use Scenario: Current续流 path in constant-current LED drivers for commercial downlights using 24 V DC input.

IC Role / Device Role / Timing Role: Conducts inductor current during PWM off-time in buck-derived LED topology, handling 100–1000 Hz dimming frequencies.

Use Value: 10 pF C_J minimizes capacitive coupling noise into analog current sense circuitry, preserving dimming linearity.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R06U	Same V_RRM (600 V), lower V_F (1.3 V typ), higher t_rr (100 ns)	Higher conduction efficiency but increased switching loss in >250 kHz designs	Prefer when thermal budget dominates over EMI constraints
ES1J-E3/5AT	Identical V_RRM, I_F, package; 1.55 V V_F max, 35 ns t_rr	Better high-frequency performance but tighter process control increases cost	Select for noise-sensitive lighting or medical auxiliary supplies

Compared with STTH1R06U and ES1J-E3/5AT, US1JHR3G delivers balanced trade-offs: moderate V_F and t_rr values suit cost-sensitive industrial DC-DC and snubber use cases where MSL 1 and halogen-free compliance are mandatory.

Availability

US1JHR3G is available at Aetrix Electronics and suitable for DC-DC converters, snubber networks, freewheeling paths, and LED driver designs requiring stable component supply, full traceability, and long-term manufacturing continuity.

Supply support for US1JHR3G 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power, automotive, and industrial markets since 1979.

The US1x ultrafast rectifier series targets high-efficiency, surface-mount power conversion systems where reliability, automated assembly compatibility, and environmental compliance are critical design requirements.

FAQ

What is the maximum junction temperature rating for US1JHR3G?

The US1JHR3G has a maximum junction temperature (T_J) of +150°C and a minimum storage temperature of –55°C. This rating allows operation in industrial ambient environments up to +100°C when mounted on adequate copper area, leveraging its 27 °C/W junction-to-lead thermal resistance. Thermal design must ensure US1JHR3G stays within this limit under worst-case load and ambient conditions.

Does US1JHR3G meet lead-free and RoHS requirements?

Yes, US1JHR3G is RoHS compliant and halogen-free per IEC 61249-2-21. Its matte tin-plated leads meet J-STD-002 solderability standards, and the molding compound satisfies UL 94V-0 flammability rating. These attributes make US1JHR3G suitable for consumer, industrial, and networking equipment subject to environmental compliance mandates.

What is the reverse recovery time specification for US1JHR3G?

The US1JHR3G has a maximum reverse recovery time (t_rr) of 75 ns under test conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This ultrafast characteristic reduces switching losses and EMI in high-frequency power converters, distinguishing it from standard recovery rectifiers with t_rr > 500 ns.

Is US1JHR3G suitable for automated SMT assembly?

Yes, US1JHR3G is specifically designed for automated placement with MSL 1 rating per J-STD-020 - meaning unlimited floor life and no bake requirement before reflow. Its DO-214AC (SMA) package geometry and matte tin lead finish ensure robust solder joint formation in standard lead-free reflow profiles used in high-volume manufacturing.

How does the forward voltage of US1JHR3G compare across temperature?

The forward voltage (V_F) of US1JHR3G increases slightly with junction temperature, remaining ≤1.7 V at I_F = 1 A and T_J = 25°C, and rising to approximately 1.85 V at T_J = 125°C. This positive temperature coefficient supports current sharing in parallel configurations and simplifies thermal runaway mitigation in multi-diode layouts.

US1JHR3G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 600 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 @ 600 V

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

Operating Temperature - Junction:: -55°C ~ 150°C

US1JHR3G FAQ

1.How can I place an order for US1JHR3G through Aetrix?

Please submit a Request for Quotation (RFQ) for US1JHR3G 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 US1JHR3G reliable?

The price and inventory of US1JHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for US1JHR3G is usually 5 days.

3.What payment methods are accepted for US1JHR3G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US1JHR3G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for US1JHR3G?

US1JHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your US1JHR3G 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 US1JHR3G?

For technical support, including US1JHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US1JHR3G requirements.

6.How does Aetrix verify that US1JHR3G is sourced from the original manufacturer or authorized distributors?

All US1JHR3G 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 US1JHR3G meets industry standards.

7.What is the process for return or replacement of US1JHR3G?

All US1JHR3G units undergo pre-shipment inspection (PSI). If there is an issue with US1JHR3G, 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 US1JHR3G part is unused and in its original packaging.

Return procedure for US1JHR3G:

1.Submit a request within 90 days.

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

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