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Taiwan Semiconductor Corporation HER202G R0G
- Part No.:
- HER202G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
HER202G R0G.pdf
- Description:
- DIODE GEN PURP 100V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,306
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Product details
Overview
HER202G from Taiwan Semiconductor is a 2 A, 100 V high-efficiency glass-passivated fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 1.0 V forward voltage at 2 A, 60 A surge capability, and 50 ns reverse recovery time - used in switching-mode power supplies and DC-DC converters.
For engineers reviewing the HER202G datasheet, HER202G pinout, HER202G application, or HER202G equivalent, key selection criteria include repetitive peak reverse voltage (100 V), forward current rating (2 A), thermal resistance (60 °C/W), junction temperature range (−55 to +150 °C), and RoHS/halogen-free compliance for automotive and industrial power conversion designs.
Technical Context
This device is a single-die, unidirectional silicon rectifier optimized for high-frequency switching applications. Its glass-passivated junction ensures stable performance under thermal cycling and humidity stress, while low VF and fast trr reduce conduction and switching losses in SMPS topologies.
The HER202G operates with a maximum junction temperature of 150 °C and exhibits 5 µA reverse leakage at 25 °C and rated VR, rising to 150 µA at 125 °C - critical for maintaining efficiency in thermally constrained environments like enclosed DC-DC modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - supports input rectification up to 100 V DC or 70 V RMS AC without breakdown |
| IF | 2 A continuous - delivers sustained output current in compact 24–48 V DC-DC converter secondaries |
| IFSM | 60 A (8.3 ms half-sine) - withstands inrush surges during cold-start or load transients |
| VF @ 2 A, 25°C | 1.0 V - reduces conduction loss to 2.0 W at full load, improving thermal margin |
| trr | 50 ns - minimizes switching loss and EMI in 100–500 kHz SMPS designs |
| RθJA | 60 °C/W - enables 2 A operation at ≤75 °C ambient on standard FR-4 PCB with minimal copper area |
| IR @ 100 V, 25°C | 5 µA - ensures low standby leakage in battery-backed or energy-sensitive systems |
Pinout & Package
DO-204AC (DO-15) molded plastic package with axial leads; cathode indicated by band; pure tin-plated leads compliant with J-STD-002 solderability; weight ≈ 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead without band) | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode (lead with band) | Forward current exit / reverse blocking terminal | Connected to output rail or filter capacitor positive; blocks reverse voltage up to 100 V |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables reliable operation in humid or high-bias-stress environments without degradation |
| AEC-Q101 qualified option available (HER202GH) | Validated for automotive-grade reliability including temperature cycling and HTRB testing |
| Low VF (1.0 V @ 2 A) | Reduces power dissipation by ~15% vs. standard 1N540x series at same current |
| Fast trr (50 ns) | Supports higher switching frequencies than general-purpose rectifiers (e.g., 1N4007: >2 µs) |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance requirements for industrial and consumer end equipment |
Applications
| DC-DC Converter Secondary Rectification | Switching Mode Inverter Output Stage |
|---|---|
Use Scenario: Rectifying high-frequency AC from synchronous buck or flyback transformer secondary windings into regulated 3.3–24 V DC output rails. IC Role / Device Role / Timing Role: Unidirectional current valve enabling efficient energy transfer during active conduction phase; blocks reverse recovery current during dead time. Use Value: 1.0 V VF and 50 ns trr minimize combined conduction + switching loss, increasing overall converter efficiency by ≥2% over standard rectifiers. | Use Scenario: Freewheeling path in H-bridge or half-bridge inverters driving inductive loads such as motors or solenoids. IC Role / Device Role / Timing Role: Provides low-loss return path for inductive kickback current when main switches turn off. Use Value: 60 A IFSM rating handles transient back-EMF spikes without failure; 150 °C TJ max supports operation in sealed motor drive enclosures. |
| Freewheeling Diode in Buck Regulators | Input Bridge Rectification in Compact SMPS |
Use Scenario: Placed across inductor in non-synchronous buck converters to maintain current continuity during high-side switch off-time. IC Role / Device Role / Timing Role: Conducts freewheeling current for ~70–90% of switching cycle; must recover rapidly before next high-side turn-on. Use Value: 50 ns trr prevents shoot-through risk and reduces voltage overshoot, enabling stable operation at 300–500 kHz. | Use Scenario: Single-phase bridge rectifier input stage in space-constrained AC-DC adapters (e.g., 12 V/2 A wall adapters). IC Role / Device Role / Timing Role: Converts 85–265 V AC line input to pulsating DC; operates at line frequency but must survive surge events. Use Value: 60 A IFSM and 100 V VRRM provide robustness against 10/1000 µs line surges and capacitor charging transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R01 | Same IF (2 A), VRRM (100 V), but VF = 1.15 V @ 2 A; trr = 45 ns; DO-204AL (DO-41) package | Slightly higher VF increases conduction loss; smaller DO-41 footprint may require layout change | Prefer HER202G where thermal margin is tight or DO-15 mechanical robustness is required |
| ES2D | IF = 2 A, VRRM = 200 V, VF = 0.95 V @ 2 A, trr = 35 ns, SMD SMB package | Higher VRRM and faster trr suit higher-voltage or higher-frequency designs; surface-mount only | Choose ES2D for automated assembly or >200 kHz operation; HER202G preferred for through-hole reliability and cost-sensitive volume production |
Compared with STTH2R01 and ES2D, the HER202G offers optimal balance of low VF (1.0 V), proven axial-leaded mechanical stability, and AEC-Q101 qualification path - making it especially suitable for industrial power supplies where service life and thermal resilience outweigh ultra-high-speed requirements.
Availability
HER202G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, long-term manufacturability, and automotive-grade qualification readiness.
Supply support for HER202G 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 industrial, computing, and automotive markets since 1979.
The HER20xG series was designed specifically for high-efficiency, high-reliability power conversion - targeting cost-sensitive yet thermally demanding applications where fast recovery, low VF, and robust packaging are essential.
FAQ
What is the maximum repetitive peak reverse voltage rating for HER202G?
The HER202G has a maximum repetitive peak reverse voltage (VRRM) rating of 100 V, verified per the official Taiwan Semiconductor datasheet Version G2105. This rating defines the highest instantaneous reverse voltage the HER202G can block repeatedly without breakdown under normal operating conditions, making it suitable for 70 V RMS AC inputs or 100 V DC bus applications.
Is HER202G RoHS and halogen-free compliant?
Yes, the HER202G is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as confirmed in the official Taiwan Semiconductor datasheet. The molding compound contains no brominated flame retardants or chlorine-based additives, and the pure tin-plated leads meet J-STD-002 solderability standards - ensuring environmental compliance for global electronics manufacturing.
What is the forward voltage drop of HER202G at its rated current?
The HER202G exhibits a typical forward voltage (VF) of 1.0 V at 2 A and 25 °C junction temperature, as specified in the Electrical Specifications table of the Taiwan Semiconductor datasheet. This value is measured under pulse conditions (PW = 0.3 ms), reflecting real-world conduction loss during active switching cycles in SMPS applications.
Does HER202G have automotive qualification?
The base HER202G is not AEC-Q101 qualified, but the variant HER202GH is explicitly listed as AEC-Q101 qualified in the Ordering Information section of the Taiwan Semiconductor datasheet. HER202GH undergoes additional stress testing including temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing for automotive under-hood use.
What is the thermal resistance from junction to ambient for HER202G?
The HER202G has a typical junction-to-ambient thermal resistance (RθJA) of 60 °C/W when mounted on a standard FR-4 PCB with minimum copper pad area, as stated in the Thermal Performance section of the Taiwan Semiconductor datasheet. This value enables reliable 2 A operation at ambient temperatures up to 75 °C without forced airflow or heatsinking.
HER202G R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 V
- Capacitance @ Vr, F:
- 35pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER202G R0G FAQ
1.How can I place an order for HER202G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER202G 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 HER202G R0G reliable?
The price and inventory of HER202G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER202G R0G is usually 5 days.
3.What payment methods are accepted for HER202G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER202G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER202G R0G?
HER202G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER202G 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 HER202G R0G?
For technical support, including HER202G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER202G R0G requirements.
6.How does Aetrix verify that HER202G R0G is sourced from the original manufacturer or authorized distributors?
All HER202G 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 HER202G R0G meets industry standards.
7.What is the process for return or replacement of HER202G R0G?
All HER202G R0G units undergo pre-shipment inspection (PSI). If there is an issue with HER202G 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 HER202G R0G part is unused and in its original packaging.
Return procedure for HER202G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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