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Taiwan Semiconductor Corporation HER303G R0G
- Part No.:
- HER303G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
HER303G R0G.pdf
- Description:
- DIODE GEN PURP 200V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,536
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Product details
Overview
HER303G R0G from Taiwan Semiconductor is a high-efficiency, single-die ultrafast recovery rectifier in DO-201AD package, rated for 3 A average forward current, 200 V repetitive peak reverse voltage, and 50 ns reverse recovery time at 25°C. It delivers low forward voltage (1.0 V at 3 A, 25°C) and supports DC-DC converters, switching inverters, and freewheeling paths in industrial power supplies.
For engineers reviewing the HER303G R0G datasheet, HER303G R0G pinout, HER303G R0G application, or HER303G R0G equivalent, key selection criteria include its 200 V VRRM rating, 125 A surge capability, 10 °C/W junction-to-lead thermal resistance, and AEC-Q101 qualification availability - critical for automotive-grade power conversion designs requiring reliability under transient stress.
Technical Context
The HER303G R0G employs an epitaxial planar structure optimized for ultrafast recovery (trr ≤ 50 ns), minimizing switching losses in high-frequency SMPS topologies. Its 200 V VRRM and 3 A IF rating target mid-voltage secondary-side rectification where efficiency and thermal performance are prioritized over extreme voltage margin.
Thermal design is supported by a low RθJL of 10 °C/W and RθJA of 35 °C/W, enabling operation up to 150 °C junction temperature. The device exhibits 60 pF junction capacitance at 1 MHz and 4.0 V reverse bias, contributing to reduced capacitive switching noise in resonant converter stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in flyback or forward converter output stages |
| IF(AV) | 3 A - Continuous average forward current; determines heatsink sizing and conduction loss budget at 100% duty cycle |
| trr | 50 ns - Ultrafast reverse recovery time; reduces switching losses and EMI in 100–500 kHz SMPS designs |
| VF | 1.0 V @ 3 A, 25°C - Low forward drop improves system efficiency and reduces thermal load on PCB copper |
| RθJL | 10 °C/W - Junction-to-lead thermal resistance; enables direct thermal coupling to copper pour or heatsink via lead frame |
| IFSM | 125 A @ 8.3 ms - Peak surge current handling; supports inrush and fault-current robustness in unregulated supplies |
| CJ | 60 pF @ 1 MHz, VR = 4.0 V - Junction capacitance affects high-frequency ringing and snubber design requirements |
Pinout & Package
Package: DO-201AD - Axial-leaded, molded plastic case with cathode band marking; UL 94V-0 rated, pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node return) |
| Cathode (Lead 2, banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or filter capacitor positive; polarity must be observed to prevent catastrophic failure |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery (trr ≤ 50 ns) | Reduces turn-off losses and diode-induced voltage spikes in hard-switched converters operating above 100 kHz |
| Low VF (1.0 V @ 3 A) | Lowers conduction loss by ~15% vs. standard FR series, directly improving 12 V/24 V output efficiency |
| High IFSM (125 A) | Withstands repeated cold-start surges and short-circuit transients without degradation in industrial motor drives |
| DO-201AD mechanical robustness | UL 94V-0 molding and JESD201 Class 2 whisker resistance ensure long-term reliability in humid, vibration-prone environments |
| AEC-Q101 qualification option | Enables use in automotive body electronics and ADAS power modules where component stress testing is mandated |
Applications
| DC-DC Converter Secondary Rectification | Switching Inverter Freewheeling Diode |
|---|---|
Use Scenario: Used as output rectifier in isolated 24 V → 5 V/3.3 V flyback or forward converter powering microcontrollers and sensors. IC Role / Device Role / Timing Role: Unidirectional current path during transformer demagnetization phase; conducts only when secondary winding voltage exceeds output rail. Use Value: 50 ns trr minimizes reverse recovery charge (Qrr), reducing cross-conduction loss with synchronous MOSFETs and lowering output ripple. | Use Scenario: Placed across IGBT or MOSFET switches in H-bridge inverters driving HVAC blowers or pump motors. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during switch off-time, clamping inductive kickback energy. Use Value: 125 A IFSM withstands motor stall currents; 1.0 V VF limits power dissipation during continuous freewheeling at 3 A load. |
| Industrial AC-DC Power Supply Output Stage | Automotive Body Control Module (BCM) Power Rail |
Use Scenario: Final-stage rectifier in 36 W open-frame AC-DC adapter for PLC I/O modules. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; operates continuously at 3 A average load with 50–100 kHz switching frequency. Use Value: 10 °C/W RθJL allows direct mounting to 2 oz copper thermal pad, maintaining TJ < 125°C without forced air. | Use Scenario: Input rectifier in 12 V battery-supplied BCM power management IC supply rail. IC Role / Device Role / Timing Role: Protects downstream regulators from reverse battery connection and alternator load dump transients. Use Value: AEC-Q101 qualified variant (HER303GH) meets automotive temperature cycling and humidity resistance requirements per ISO 16750. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-3EYH02-M3/45 | Same DO-201AD package, 200 V VRRM, 3 A IF, but trr = 35 ns (faster), VF = 1.15 V (higher) | Better suited for >300 kHz ZVS/ZCS topologies where Qrr dominates loss; less optimal for thermally constrained 100–200 kHz designs | Select VS-3EYH02-M3/45 when minimizing switching loss outweighs conduction loss and layout allows tighter thermal control. |
| ON Semiconductor MUR320G | Same VRRM (200 V), IF (3 A), DO-201AD, but trr = 75 ns (slower), VF = 0.92 V (lower) | Preferred in cost-sensitive, lower-frequency (<100 kHz) applications where conduction loss dominates and EMI filtering is simpler | Select MUR320G where thermal headroom is limited and switching frequency is below 120 kHz, accepting higher trr-related ringing. |
Compared with VS-3EYH02-M3/45 and MUR320G, HER303G R0G balances ultrafast recovery (50 ns) and low VF (1.0 V) within a widely available, AEC-Q101-qualified platform - making it optimal for 150–250 kHz industrial and automotive auxiliary power supplies demanding both efficiency and ruggedness.
Availability
HER303G R0G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for HER303G R0G 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.
The HER30xG series was designed specifically for high-efficiency, high-reliability secondary-side rectification in switching power supplies - emphasizing ultrafast recovery, low thermal resistance, and AEC-Q101 qualification readiness.
FAQ
What is the maximum junction temperature rating for HER303G R0G?
The HER303G R0G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows operation in high-ambient environments such as enclosed industrial enclosures or under-hood automotive locations when mounted with adequate thermal relief. Derating curves confirm usable current capacity down to 1.5 A at 125°C case temperature.
Does HER303G R0G have AEC-Q101 qualification?
HER303G R0G itself is not AEC-Q101 qualified; however, the pin-compatible HER303GH variant is explicitly qualified per AEC-Q101 Rev D. The "H" suffix denotes automotive qualification, including temperature cycling, humidity testing, and mechanical shock validation. For automotive designs, HER303GH must be specified instead of HER303G R0G.
What is the reverse recovery time (trr) specification for HER303G R0G?
The HER303G R0G has a typical reverse recovery time (trr) of 50 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A at 25°C. This value is confirmed in the Electrical Specifications table and applies across the full operating temperature range up to 125°C, with minor increase to ~65 ns at 125°C per characterization curves.
How does the forward voltage (VF) of HER303G R0G compare to standard FR-type rectifiers?
HER303G R0G specifies VF = 1.0 V at 3 A and 25°C, which is approximately 0.15–0.25 V lower than legacy FR303 devices (typically 1.15–1.25 V). This reduction directly lowers conduction loss by 15–20%, improving overall efficiency in 12–24 V output rails and easing thermal management in compact layouts.
What packaging options are available for HER303G R0G?
HER303G R0G is supplied in DO-201AD package on 1,250-piece tape-and-reel (ordering code HER303G) or 500-piece ammo box (HER303G A0G). The "R0G" suffix in your part number indicates reel packaging per standard TSC tape-and-reel configuration, compatible with automated SMT placement after axial lead forming.
HER303G R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER303G R0G FAQ
1.How can I place an order for HER303G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER303G R0G 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 HER303G R0G reliable?
The price and inventory of HER303G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER303G R0G is usually 5 days.
3.What payment methods are accepted for HER303G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER303G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER303G R0G?
HER303G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER303G R0G 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 HER303G R0G?
For technical support, including HER303G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER303G R0G requirements.
6.How does Aetrix verify that HER303G R0G is sourced from the original manufacturer or authorized distributors?
All HER303G R0G 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 HER303G R0G meets industry standards.
7.What is the process for return or replacement of HER303G R0G?
All HER303G R0G units undergo pre-shipment inspection (PSI). If there is an issue with HER303G R0G, 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 HER303G R0G part is unused and in its original packaging.
Return procedure for HER303G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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