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Taiwan Semiconductor Corporation US1J R3G
- Part No.:
- US1J R3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
US1J R3G.pdf
- Description:
- DIODE GEN PURP 600V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,349
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Product details
Overview
US1J R3G 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 engineers reviewing the US1J R3G datasheet, US1J R3G pinout, US1J R3G application, or US1J R3G equivalent, key selection criteria include repetitive peak reverse voltage (600 V), thermal resistance (RθJA = 75 °C/W), junction temperature range (–55 to +150 °C), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance.
Technical Context
The US1J R3G implements a single-die, glass-passivated PN junction optimized for high-frequency switching applications. Its ultrafast recovery (trr ≤ 75 ns) and low junction capacitance (10 pF at 1 MHz, 4 V) minimize switching losses in SMPS topologies.
Designed for automated SMT assembly, it meets J-STD-002 solderability and JESD201 Class 2 whisker resistance. The cathode band denotes polarity, and the matte tin-plated leads ensure reliable reflow wetting under standard lead-free profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - supports input rectification in 400 V AC line-derived DC-DC supplies with margin |
| IF | 1 A continuous - rated for sustained conduction in low-power auxiliary rails |
| trr | ≤ 75 ns - enables operation up to ~5 MHz switching frequencies with minimal reverse recovery loss |
| VF (max) | 1.7 V @ 1 A, 25°C - limits conduction loss to ≤1.7 W at full current, easing thermal design |
| RθJA | 75 °C/W - requires ≤75°C ambient rise above PCB for 150°C max junction temperature at full load |
| IR (max) | 5 µA @ 25°C - ensures negligible leakage in high-impedance hold-up or sensing paths |
| Package | DO-214AC (SMA) - industry-standard SMT footprint compatible with IPC-7351B generic land pattern |
Pinout & Package
DO-214AC (SMA) package: molded epoxy case meeting UL 94V-0; matte tin-plated leads; cathode indicated by band; weight ≈ 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry node during forward conduction | Connected to lower-potential side of source (e.g., transformer secondary center-tap or switch node) |
| Cathode | Current exit node during forward conduction; polarity reference | Marked by band; ties to output rail or energy storage capacitor positive terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability under humidity and thermal cycling vs. epoxy-passivated alternatives |
| Ultrafast recovery (75 ns) | Reduces switching loss and EMI generation in high-frequency flyback and resonant converters |
| MSL 1 rating | Enables unlimited floor life and standard reflow without baking - simplifies manufacturing logistics |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics programs |
Applications
| DC-DC Converter | Snubber Circuit |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12 V/1 A flyback converter powering industrial sensors. IC Role / Device Role / Timing Role: Unidirectional current steering diode converting transformer AC output to regulated DC. Use Value: 75 ns trr minimizes voltage overshoot and ringing during MOSFET turn-off, reducing stress on primary switch. | Use Scenario: RC snubber across MOSFET drain-source in motor drive half-bridge. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive kickback energy. Use Value: Low CJ (10 pF) prevents capacitive loading of snubber resistor, preserving damping effectiveness. |
| Lighting Application | Freewheeling Diode |
Use Scenario: Output rectifier in LED driver for commercial downlights (100–277 V AC input). IC Role / Device Role / Timing Role: High-voltage output stage diode handling 600 V PIV in buck-boost topology. Use Value: 600 V VRRM provides 2× margin over 300 V DC bus, ensuring robustness against line transients. | Use Scenario: Inductor freewheel path in synchronous buck controller for FPGA core supply. IC Role / Device Role / Timing Role: Standby conduction path when high-side FET is off. Use Value: 1.7 V VF limits power dissipation to <1.7 W, enabling compact thermal layout without heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | VRRM = 600 V, trr = 65 ns, VF = 1.7 V @ 1 A - slightly faster but same voltage/current rating | Same DO-214AC footprint; identical thermal resistance (RθJA = 75 °C/W) | Preferred where tighter trr tolerance is required; validated in ST's lighting reference designs |
| MBR160 | VRRM = 60 V only, Schottky architecture - lower VF (0.75 V) but unsuitable above 100 V | Not usable in 600 V applications; limited to low-voltage DC-DC outputs | Select only for sub-100 V rails where efficiency gain outweighs voltage limitation |
Compared with STTH1R06 and MBR160, the US1J R3G delivers balanced performance for 600 V-class ultrafast rectification: its 75 ns trr and 1.7 V VF suit cost-sensitive industrial power supplies, while MBR160 fails at high voltage and STTH1R06 offers marginal speed improvement at higher unit cost.
Availability
US1J R3G is available at Aetrix Electronics and suitable for DC-DC converters, snubber circuits, and lighting applications requiring stable component supply, consistent MSL 1 handling, and RoHS-compliant sourcing.
Supply support for US1J R3G 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 industrial and consumer markets since 1979.
The US1J R3G belongs to TSC's US1x ultrafast rectifier family, engineered specifically for high-efficiency, high-frequency switching power supplies where fast recovery, low leakage, and robust thermal performance are critical.
FAQ
What is the maximum junction temperature rating for US1J R3G?
The US1J R3G has a maximum junction temperature (TJ) of +150°C and a minimum of –55°C. This wide operating range allows deployment in industrial environments with elevated ambient temperatures. Derating curves confirm 1 A average forward current is maintainable up to 125°C ambient when mounted on standard FR-4 PCB with adequate copper area. The US1J R3G must not exceed 150°C junction temperature under any steady-state or transient condition.
Is US1J R3G suitable for use in lead-free reflow processes?
Yes, the US1J R3G is qualified for lead-free reflow per J-STD-002 and features matte tin-plated leads compatible with peak temperatures up to 260°C. Its MSL 1 rating means no dry-pack or baking is required prior to assembly. The DO-214AC package body meets UL 94V-0 flammability requirements, and the device passes JESD201 Class 2 whisker testing - all confirming robustness in modern SMT lines using US1J R3G.
What does the 'R3G' suffix indicate in US1J R3G?
The 'R3G' suffix in US1J R3G denotes Taiwan Semiconductor's internal packaging and environmental coding: 'R3' specifies tape-and-reel packaging (7,500 units per reel), and 'G' indicates green (halogen-free) molding compound compliant with IEC 61249-2-21. This matches the ordering information in the official US1x datasheet (Version N2102) and confirms the US1J R3G is RoHS-compliant and halogen-free.
How does US1J R3G compare to US1M in terms of reverse voltage rating?
The US1J R3G has a repetitive peak reverse voltage (VRRM) of 600 V, whereas US1M is rated for 1000 V. Both share identical package (DO-214AC), forward current (1 A), and thermal specs, but US1M supports higher-voltage applications like three-phase rectification or telecom -48 V systems with large transients. Select US1J R3G where 600 V margin suffices - it offers tighter parameter distribution and potentially lower cost than US1M.
Can US1J R3G replace a standard PN rectifier like 1N4007 in a 600 V circuit?
No - while both handle 600 V, the US1J R3G is an ultrafast rectifier (trr ≤ 75 ns), whereas the 1N4007 is a general-purpose rectifier with trr > 2 µs. Substituting US1J R3G for 1N4007 in low-frequency (<1 kHz) linear supplies yields no benefit and increases cost. However, in switching supplies >50 kHz, US1J R3G reduces losses and EMI - the US1J R3G is not a drop-in replacement unless the circuit relies on fast recovery.
US1J R3G 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
US1J R3G FAQ
1.How can I place an order for US1J R3G through Aetrix?
Please submit a Request for Quotation (RFQ) for US1J R3G 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 US1J R3G reliable?
The price and inventory of US1J R3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for US1J R3G is usually 5 days.
3.What payment methods are accepted for US1J R3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US1J R3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for US1J R3G?
US1J R3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your US1J R3G 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 US1J R3G?
For technical support, including US1J R3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US1J R3G requirements.
6.How does Aetrix verify that US1J R3G is sourced from the original manufacturer or authorized distributors?
All US1J R3G 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 US1J R3G meets industry standards.
7.What is the process for return or replacement of US1J R3G?
All US1J R3G units undergo pre-shipment inspection (PSI). If there is an issue with US1J R3G, 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 US1J R3G part is unused and in its original packaging.
Return procedure for US1J R3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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