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Taiwan Semiconductor Corporation HER102G R0G
- Part No.:
- HER102G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER102G R0G.pdf
- Description:
- DIODE GEN PURP 100V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,242
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Product details
Overview
HER102G R0G from Taiwan Semiconductor is a 1A, 100V high-efficiency glass-passivated fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 1.0V max forward voltage at 1A, 30A surge capability, and 50ns reverse recovery time - used in DC-DC converters and switching-mode power supplies.
For engineers reviewing the HER102G R0G datasheet, HER102G R0G pinout, HER102G R0G application, or HER102G R0G equivalent, this page delivers verified electrical specs, thermal performance, AEC-Q101 qualification status, junction capacitance, and real-world freewheeling use context - all specific to HER102G R0G.
Technical Context
HER102G R0G is a single-die, unidirectional silicon rectifier with glass-passivated junction for enhanced moisture resistance and reliability. It operates across -55°C to +150°C junction temperature range and supports repetitive peak reverse voltage of 100V with 70V RMS rating.
The device delivers 1A average forward current with 30A non-repetitive surge (8.3ms half-sine), 15°C/W junction-to-case thermal resistance, and 60°C/W junction-to-ambient thermal resistance - enabling compact heatsink-free designs in space-constrained SMPS layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse voltage the diode blocks without breakdown |
| IF(AV) | 1 A - continuous average forward current under specified thermal conditions |
| VF @ 1A | ≤1.0 V - low conduction loss enabling higher efficiency in 12–24V output DC-DC stages |
| trr | ≤50 ns - fast recovery minimizes switching losses in 100–500 kHz SMPS topologies |
| IFSM | 30 A - surge withstand capability for inrush and transient overload protection |
| CJ @ 4V | 15 pF - low junction capacitance reduces high-frequency noise coupling in EMI-sensitive circuits |
| RθJA | 60 °C/W - thermal resistance enables operation up to 1A without forced air in ambient ≤50°C |
Pinout & Package
HER102G R0G uses DO-204AL (DO-41) axial-leaded package with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connects to lower-potential node (e.g., switch node in buck freewheel path) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connects to output rail; polarity must be observed to prevent reverse conduction failure |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Prevents moisture-induced degradation and improves long-term reliability in humid industrial environments |
| AEC-Q101 qualified option available | Validated for automotive under-hood applications requiring extended temperature cycling and mechanical robustness |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS directives for environmentally regulated electronics manufacturing |
| UL 94V-0 molding compound | Self-extinguishing encapsulation material required for safety-critical power supply certifications |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–24V outputs at ≤1A. IC Role / Device Role / Timing Role: Unidirectional current steering device converting high-frequency AC from transformer secondary into regulated DC output. Use Value: HER102G R0G's 1.0V VF and 50ns trr reduce conduction and switching losses, improving converter efficiency by ~1.2% vs. standard 1N400x diodes. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings, solenoids) in half-bridge inverters operating at 20–100 kHz. IC Role / Device Role / Timing Role: Clamp diode providing low-impedance return path during MOSFET off-time to suppress inductive kickback voltage spikes. Use Value: HER102G R0G's 30A IFSM and 100V VRRM safely absorb energy from 12–48V inductive loads without avalanche stress or thermal runaway. |
| AC-DC Adapter Secondary Rectifier | Industrial Power Supply Snubber Network |
Use Scenario: Output rectification in compact wall-adapters and open-frame AC-DC modules rated ≤15W. IC Role / Device Role / Timing Role: Main output rectifier handling continuous 1A load with minimal footprint and thermal rise. Use Value: HER102G R0G's DO-41 package and 60°C/W RθJA allow natural convection cooling in sealed enclosures up to 50°C ambient. | Use Scenario: RC snubber network clamp diode in IGBT gate-drive or main-switch snubbers for 100–400V bus systems. IC Role / Device Role / Timing Role: Fast-turn-off clamp element limiting voltage overshoot during turn-off transients. Use Value: HER102G R0G's 50ns trr ensures precise timing alignment with snubber capacitor discharge, preventing false triggering or oscillation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04 | 1A/400V, VF = 1.3V @ 1A, trr = 35ns, DO-41 package | Higher VRRM but higher VF; better for 300V+ bus systems with tighter trr requirements | Select STTH1R04 when reverse voltage margin >300V is needed and 0.3V higher VF is acceptable |
| ON Semi MUR105 | 1A/50V, VF = 0.95V @ 1A, trr = 75ns, DO-41 package | Lower VRRM, slightly lower VF, slower recovery; optimized for cost-sensitive <60V designs | Choose MUR105 only if system VRRM requirement is ≤50V and trr >50ns is tolerable |
Compared with STTH1R04 and MUR105, HER102G R0G uniquely balances 100V blocking, 1.0V VF, and 50ns trr in a single DO-41 package - making it optimal for 12–24V industrial SMPS where voltage margin, efficiency, and speed must coexist without layout change.
Availability
HER102G R0G is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for HER102G 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.
HER102G R0G belongs to TSC's HER10xG high-efficiency rectifier family, engineered specifically for high-frequency switching power supplies demanding low VF, fast trr, and robust thermal performance in compact axial packages.
FAQ
What is the maximum junction temperature rating for HER102G R0G?
The maximum junction temperature (TJ MAX) for HER102G R0G is +150°C, with operational range from -55°C to +150°C. This rating allows reliable use in enclosed industrial power supplies where ambient temperatures reach 70°C and self-heating adds ≤80°C under full 1A load - confirmed by its 60°C/W RθJA and 15°C/W RθJC thermal metrics.
Is HER102G R0G AEC-Q101 qualified?
HER102G R0G itself is not AEC-Q101 qualified; however, the HER102GH variant (same electrical specs, marked with "H") is AEC-Q101 qualified. The "R0G" suffix indicates green compound and standard reliability grade - suitable for industrial, not automotive, applications unless upgraded to HER102GH.
What does the "R0G" suffix mean in HER102G R0G?
The "R0G" suffix in HER102G R0G denotes green molding compound (halogen-free per IEC 61249-2-21) and standard reliability grade (non-AEC-Q101). It is distinct from "H" (AEC-Q101 qualified) and "A0G" (ammo box packaging); "R0G" confirms RoHS-compliant, UL 94V-0 material with no lead finish exceptions.
Can HER102G R0G replace a 1N4002 in a 12V power supply?
Yes, HER102G R0G can directly replace 1N4002 in most 12V power supplies due to identical DO-41 package, same 1A IF rating, and higher 100V VRRM (vs. 100V for 1N4002). Its 1.0V VF and 50ns trr further improve efficiency and reduce EMI compared to 1N4002's 1.1V VF and >2μs trr - with no PCB changes required.
What is the reverse leakage current of HER102G R0G at 125°C?
At TJ = 125°C and rated VR (100V), HER102G R0G exhibits a maximum reverse leakage current (IR) of 150 µA - measured under 30ms pulse test conditions. This value is critical for low-power standby circuits where leakage must remain below 200 µA to avoid excessive quiescent loss.
HER102G 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):
- 100 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 @ 100 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
HER102G R0G FAQ
1.How can I place an order for HER102G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER102G 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 HER102G R0G reliable?
The price and inventory of HER102G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER102G R0G is usually 5 days.
3.What payment methods are accepted for HER102G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER102G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER102G R0G?
HER102G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER102G 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 HER102G R0G?
For technical support, including HER102G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER102G R0G requirements.
6.How does Aetrix verify that HER102G R0G is sourced from the original manufacturer or authorized distributors?
All HER102G 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 HER102G R0G meets industry standards.
7.What is the process for return or replacement of HER102G R0G?
All HER102G R0G units undergo pre-shipment inspection (PSI). If there is an issue with HER102G 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 HER102G R0G part is unused and in its original packaging.
Return procedure for HER102G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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