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Taiwan Semiconductor Corporation HER103G R0G
- Part No.:
- HER103G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER103G R0G.pdf
- Description:
- DIODE GEN PURP 200V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,913
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Product details
Overview
HER103G R0G from Taiwan Semiconductor is a 1A, 200V high-efficiency glass-passivated axial-lead rectifier diode in DO-41 package, featuring 1.0V forward voltage at 1A, 50ns reverse recovery time, and 30A surge capability - used in DC-DC converters and switching-mode power supplies.
For engineers reviewing the HER103G R0G datasheet, HER103G R0G pinout, HER103G R0G application, or HER103G R0G equivalent, key selection criteria include VRRM = 200V, IF = 1A, trr = 50ns, thermal resistance RθJA = 60°C/W, and DO-204AL mechanical compatibility.
Technical Context
This high-efficiency rectifier uses a single-die, glass-passivated PN junction optimized for fast recovery (trr ≤ 50ns) and low conduction loss (VF = 1.0V @ 1A, 25°C). It operates across -55°C to +150°C junction temperature range with 30A non-repetitive surge rating.
Designed for unidirectional current flow in flyback and forward converter topologies, HER103G R0G delivers stable performance under repetitive 60Hz line-frequency surges and high-frequency PWM switching up to several hundred kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 170V AC rectification or 200V DC bus clamping. |
| IF | 1 A - Continuous average forward current; defines steady-state power handling in compact SMPS designs. |
| trr | 50 ns - Reverse recovery time; enables efficient operation in 100–500 kHz switching converters with minimal switching loss. |
| VF | 1.0 V @ 1A, 25°C - Forward voltage drop; determines conduction loss (1.0W @ 1A) and thermal load in linear-regulator-fed bias supplies. |
| RθJA | 60 °C/W - Junction-to-ambient thermal resistance; requires ≥ 0.5 cm² copper pad for full 1A derating at 70°C ambient. |
| IFSM | 30 A - Non-repetitive peak surge current (8.3ms half-sine); withstands cold-start inrush in offline adapters. |
Pinout & Package
DO-204AL (DO-41) axial-leaded package with cathode band marking; leads are pure tin-plated, J-STD-002 solderable, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry | Connected to lower-potential node (e.g., transformer secondary center-tap or switch-node return path). |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output capacitor positive or DC bus; polarity must match PCB silkscreen to prevent catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable leakage performance (IR ≤ 5 µA @ 25°C) and long-term reliability in humid industrial environments. |
| High surge current capability (30A) | Supports robust startup behavior in offline SMPS without external inrush limiting components. |
| Low forward voltage (1.0V) | Reduces conduction loss by ~15% vs. standard 1N400x series at 1A, improving efficiency in low-voltage outputs. |
| AEC-Q101 qualified option available | Validated for automotive under-hood applications including engine control module auxiliary supplies. |
Applications
| DC-DC Converter | Switching Inverter |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12V/1A flyback converter powering FPGA I/O banks. IC Role / Device Role / Timing Role: Unidirectional current steering device converting high-frequency AC from transformer to regulated DC output. Use Value: 50ns trr minimizes switching loss during 250kHz PWM transitions, maintaining >88% efficiency at full load. | Use Scenario: Freewheeling path in 48V-to-400V boost inverter for solar micro-inverters. IC Role / Device Role / Timing Role: Clamp diode providing low-loss return path during MOSFET off-time in discontinuous conduction mode. Use Value: 1.0V VF limits conduction loss to <1.2W at 1A peak, reducing heatsink requirements in sealed enclosures. |
| Freewheeling Diode | AC-DC Adapter |
Use Scenario: Inductive load snubbing in 24V solenoid driver circuits in industrial PLC output modules. IC Role / Device Role / Timing Role: Energy recirculation path preventing voltage spikes above 200V when coil current is interrupted. Use Value: 200V VRRM provides 2× safety margin over 24V system transients, eliminating need for TVS supplementation. | Use Scenario: Output rectification in universal-input (90–264V AC), 5V/2A wall adapter with active PFC front-end. IC Role / Device Role / Timing Role: High-frequency output rectifier synchronized with 65kHz flyback transformer secondary waveform. Use Value: DO-41 package allows direct through-hole mounting on compact PCBs while meeting UL 94V-0 flammability for consumer safety certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02 | VRRM = 200V, trr = 35ns, VF = 0.95V @ 1A - faster recovery and slightly lower VF. | Preferred in >300kHz resonant LLC converters where ultra-low trr reduces EMI. | Select STTH1R02 when minimizing switching noise is critical; HER103G R0G remains optimal for cost-sensitive 100–200kHz designs. |
| 1N4934 | VRRM = 200V, trr = 200ns, VF = 1.2V @ 1A - slower, higher VF, no AEC-Q101 option. | Suitable only for low-frequency (<20kHz) linear supply or basic battery charger applications. | Choose HER103G R0G over 1N4934 when fast recovery, low VF, or automotive qualification is required. |
Compared with STTH1R02 and 1N4934, HER103G R0G delivers balanced performance: 50ns trr ensures clean switching in mid-frequency SMPS, 1.0V VF maintains thermal headroom, and DO-41 packaging supports legacy through-hole assembly - making it ideal for industrial power supplies requiring reliability and manufacturability.
Availability
HER103G 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 production continuity.
Supply support for HER103G 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, serving global industrial, computing, and automotive markets since 1979.
The HER101G–HER108G family targets high-reliability power conversion systems, emphasizing ruggedized construction, tight parametric consistency, and extended temperature operation for use in harsh-environment power supplies and motor controls.
FAQ
What is the maximum junction temperature rating for HER103G R0G?
The HER103G R0G has a maximum junction temperature (TJ) of +150°C and a minimum of –55°C. This wide operating range supports deployment in enclosed industrial enclosures or automotive under-dash locations where ambient temperatures exceed 85°C. Derating begins above 25°C ambient per the forward current derating curve in the datasheet.
Does HER103G R0G have AEC-Q101 qualification?
HER103G R0G itself is not AEC-Q101 qualified; however, the HER103GH variant (same electrical specs, "H" suffix) is fully AEC-Q101 qualified. For automotive applications requiring stress-tested reliability, specify HER103GH - HER103G R0G is intended for industrial and commercial power supplies.
What is the reverse leakage current of HER103G R0G at elevated temperature?
At rated reverse voltage (200V) and TJ = 125°C, HER103G R0G exhibits a maximum reverse leakage current (IR) of 150 µA. At 25°C, leakage is ≤ 5 µA. This low, thermally stable leakage supports reliable hold-up time in standby power circuits.
Can HER103G R0G replace a 1N4004 in a 200V-rated design?
Yes - HER103G R0G is a direct upgrade to 1N4004 (200V, 1A) with superior performance: 50ns vs. 30µs reverse recovery, 1.0V vs. 1.1V forward voltage, and 30A vs. 30A surge rating. Its faster recovery eliminates snubber networks in SMPS, while identical DO-41 footprint enables drop-in replacement.
What is the junction-to-case thermal resistance of HER103G R0G?
HER103G R0G has a junction-to-case thermal resistance (RθJC) of 15°C/W. This value enables effective heat transfer to a heatsink or copper pour when mounted with proper lead bending and thermal interface - critical for sustaining 1A continuous current in high-density layouts.
HER103G R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER103G R0G FAQ
1.How can I place an order for HER103G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER103G 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 HER103G R0G reliable?
The price and inventory of HER103G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER103G R0G is usually 5 days.
3.What payment methods are accepted for HER103G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER103G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER103G R0G?
HER103G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER103G 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 HER103G R0G?
For technical support, including HER103G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER103G R0G requirements.
6.How does Aetrix verify that HER103G R0G is sourced from the original manufacturer or authorized distributors?
All HER103G 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 HER103G R0G meets industry standards.
7.What is the process for return or replacement of HER103G R0G?
All HER103G R0G units undergo pre-shipment inspection (PSI). If there is an issue with HER103G 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 HER103G R0G part is unused and in its original packaging.
Return procedure for HER103G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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