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Taiwan Semiconductor Corporation US1JH
- Part No.:
- US1JH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
US1JH.pdf
- Description:
- DIODE GEN PURP 600V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:14,899
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Product details
Overview
US1JH from Taiwan Semiconductor is a 1A, 600V ultrafast recovery surface-mount rectifier diode in DO-214AC (SMA) package, featuring 1.7V max forward voltage at 1A and 75ns reverse recovery time, used for freewheeling and snubber circuits in automotive DC-DC converters.
For engineers reviewing the US1JH datasheet, US1JH pinout, US1JH application, or US1JH equivalent, key selection criteria include peak reverse voltage (600V), ultrafast recovery (75ns), thermal resistance (RθJA = 75°C/W), AEC-Q101 qualification, and DO-214AC mechanical compatibility.
Technical Context
The US1JH is a single-die, glass-passivated silicon junction rectifier optimized for high-efficiency switching applications. Its 600V VRRM, 75ns trr, and 1.7V VF at 1A support low-loss operation in high-frequency flyback and boost topologies.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and features moisture sensitivity level 1 (J-STD-020), halogen-free construction (IEC 61249-2-21), and matte tin-plated leads compliant with J-STD-002 solderability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse blocking voltage; defines safe operating range in DC-DC snubber and freewheeling paths |
| IF | 1 A continuous - Rated average forward current; determines thermal derating in compact PCB layouts |
| trr | 75 ns - Ultrafast reverse recovery time; minimizes switching losses in >100 kHz power stages |
| VF | 1.7 V max @ 1A, 25°C - Forward voltage drop directly impacts conduction loss and thermal rise |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance; informs heatsinking needs on standard FR-4 with 1-in² copper |
| Junction Temp | –55°C to +150°C - Operating temperature range enabling under-hood automotive deployment |
| Package | DO-214AC (SMA) - Standardized surface-mount outline compatible with automated pick-and-place and reflow |
Pinout & Package
DO-214AC (SMA) package with axial lead configuration: cathode indicated by band; anode and cathode terminals only; no internal connections beyond the two terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of load or switch node; polarity must match schematic symbol orientation |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to higher-potential rail or switch drain/source; critical for correct freewheeling path direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTGB, TC, HTRB, and UHAST |
| Glass passivated junction | Enhances long-term reliability and humidity resistance in harsh environments without hermetic sealing |
| Ultrafast 75ns recovery | Reduces reverse recovery charge (Qrr) and associated switching losses in high-frequency converters |
| Moisture sensitivity level 1 | Eliminates need for dry-pack or baking prior to SMT assembly, lowering manufacturing cost and risk |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives for environmentally regulated end equipment |
Applications
| Automotive DC-DC Converters | LED Driver Snubbers |
|---|---|
Use Scenario: Step-down converter supplying 12V auxiliary rail from 48V battery in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck topology, conducting during low-side switch off-time. Use Value: 600V VRRM withstands transient spikes; 75ns trr limits shoot-through risk and EMI generation. | Use Scenario: Snubber network across MOSFET in constant-current LED driver for headlamp modules. IC Role / Device Role / Timing Role: Clamp diode absorbing inductive kickback energy during MOSFET turn-off. Use Value: Low Qrr and 1.7V VF reduce clamping loss and thermal stress under pulsed operation. |
| Automotive Lighting Systems | Industrial Power Supply Freewheeling |
Use Scenario: Reverse polarity protection and load dump suppression in interior lighting control units. IC Role / Device Role / Timing Role: Series rectifier isolating battery input from downstream circuitry during fault conditions. Use Value: AEC-Q101 qualification ensures survivability under ISO 7637-2 pulse 5a/b load dump transients. | Use Scenario: Output rectification in isolated flyback supply powering industrial sensors. IC Role / Device Role / Timing Role: Primary-side freewheeling diode handling 1A continuous output current at 60 kHz switching frequency. Use Value: DO-214AC footprint enables high-density layout; RθJA = 75°C/W supports operation up to +85°C ambient without forced air. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | 600V VRRM, 1.05V VF typ @ 1A, 50ns trr, TO-277 package | Lower VF and faster trr, but larger footprint and non-AEC-Q101 rated | Preferred where efficiency > automotive qualification; requires PCB redesign |
| ES1J | 600V VRRM, 1.7V VF max, 75ns trr, DO-214AC, AEC-Q101 not claimed | Identical electrical specs and package, but lacks automotive qualification documentation | Acceptable for industrial use; verify qualification status per lot if automotive deployment intended |
Compared with STTH1L06S and ES1J, the US1JH uniquely combines AEC-Q101 compliance, DO-214AC footprint, and 600V/1A/75ns performance-enabling drop-in replacement in automotive designs without layout change or qualification revalidation.
Availability
US1JH is available at Aetrix Electronics and suitable for automotive lighting systems, DC-DC converters, and industrial power supply freewheeling applications requiring stable component supply and AEC-Q101 assurance.
Supply support for US1JH 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 automotive, industrial, and consumer markets since 1979.
The US1JH belongs to TSC's US1xH ultrafast rectifier family, engineered specifically for high-reliability, high-frequency switching applications in automotive power systems where AEC-Q101 compliance and thermal robustness are mandatory.
FAQ
What is the maximum repetitive peak reverse voltage rating for US1JH?
The US1JH has a maximum repetitive peak reverse voltage (VRRM) of 600 V. This rating defines the highest reverse-biased voltage the device can block continuously without breakdown. It is verified per JEDEC test conditions and applies across the full operating temperature range of –55°C to +150°C. The US1JH maintains this rating under standard mounting conditions on FR-4 PCB with typical copper area.
Is US1JH qualified to AEC-Q101 standards?
Yes, US1JH is explicitly qualified to AEC-Q101 Rev D for stress testing including high-temperature reverse bias (HTGB), temperature cycling (TC), high-temperature operating life (HTOL), and unbiased highly accelerated stress test (UHAST). This qualification is documented in Taiwan Semiconductor's official AEC-Q101 certificate and applies to the DO-214AC packaged US1JH variant shipped under version A2102.
What is the forward voltage drop of US1JH at 1A and 25°C?
The US1JH exhibits a maximum forward voltage drop (VF) of 1.7 V at 1 A forward current and 25°C junction temperature, per the manufacturer's electrical specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to minimize self-heating. At elevated temperatures or higher currents, VF decreases slightly due to negative temperature coefficient of silicon diodes.
Does US1JH have a halogen-free construction?
Yes, US1JH conforms to IEC 61249-2-21 for halogen-free printed wiring board materials. Its molding compound contains no brominated or chlorinated flame retardants, and all terminations are free of halogenated substances. This compliance is confirmed in Taiwan Semiconductor's material declaration report for version A2102 and supports RoHS-compliant end-product certification.
What is the reverse recovery time (trr) specification for US1JH?
The US1JH has a maximum reverse recovery time (trr) of 75 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This ultrafast recovery characteristic is validated per JEDEC standard test methods and reflects the device's suitability for high-frequency switching applications such as automotive DC-DC converters operating above 100 kHz.
US1JH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
US1JH FAQ
1.How can I place an order for US1JH through Aetrix?
Please submit a Request for Quotation (RFQ) for US1JH 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 US1JH reliable?
The price and inventory of US1JH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for US1JH is usually 5 days.
3.What payment methods are accepted for US1JH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US1JH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for US1JH?
US1JH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your US1JH 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 US1JH?
For technical support, including US1JH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US1JH requirements.
6.How does Aetrix verify that US1JH is sourced from the original manufacturer or authorized distributors?
All US1JH 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 US1JH meets industry standards.
7.What is the process for return or replacement of US1JH?
All US1JH units undergo pre-shipment inspection (PSI). If there is an issue with US1JH, 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 US1JH part is unused and in its original packaging.
Return procedure for US1JH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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