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Taiwan Semiconductor Corporation HER102G A0G
- Part No.:
- HER102G A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER102G A0G.pdf
- Description:
- DIODE GEN PURP 100V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:12,143
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Product details
Overview
HER102G A0G from Taiwan Semiconductor is a 1A, 100V high-efficiency glass-passivated axial-lead rectifier diode in DO-204AL (DO-41) package, featuring 1.0V forward voltage at 1A, 30A surge capability, and 50ns reverse recovery time - used in DC/DC converters and freewheeling paths.
For engineers reviewing the HER102G A0G datasheet, HER102G A0G pinout, HER102G A0G application, or HER102G A0G equivalent, key selection criteria include VRRM = 100V, IF = 1A, trr = 50ns, thermal resistance RθJA = 60°C/W, and RoHS/halogen-free compliance for automotive-grade power conversion designs.
Technical Context
This high-efficiency rectifier uses a single-die silicon PN junction with glass passivation for enhanced reliability and moisture resistance. Its 50ns reverse recovery time enables operation in medium-frequency switching topologies up to ~100kHz without excessive switching loss.
The device operates across -55°C to +150°C junction temperature range, supports 30A non-repetitive surge current (8.3ms half-sine), and delivers stable 1.0V forward drop at rated 1A DC current - critical for minimizing conduction loss in compact power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse voltage before breakdown; defines safe operating limit in flyback/clamp circuits |
| IF | 1 A - continuous forward current rating; determines steady-state power dissipation and heatsink sizing |
| trr | 50 ns - reverse recovery time; enables efficient operation in 50–100 kHz SMPS without excessive switching loss |
| VF | 1.0 V @ 1A, 25°C - forward voltage drop; directly impacts conduction loss (Pcond = I × VF) |
| RθJA | 60 °C/W - junction-to-ambient thermal resistance; sets required PCB copper area or heatsinking for 150°C max TJ |
| IFSM | 30 A - peak surge current (8.3ms); ensures robustness against inrush and transient overloads |
| CJ | 15 pF @ 1MHz, 4V - junction capacitance; affects high-frequency noise coupling and EMI filter design |
Pinout & Package
Package: DO-204AL (DO-41), axial-lead, glass-passivated silicon rectifier. Cathode indicated by band on body. Leads are pure tin-plated, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connects to lower-potential node (e.g., switch node in buck converter or transformer secondary) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connects to output rail or positive bus; blocks reverse voltage up to 100V |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Prevents moisture ingress and surface leakage, enabling stable performance in humid industrial environments |
| 1.0 V forward voltage @ 1A | Reduces conduction loss by ~15% vs. standard 1N400x diodes (VF ≈ 1.1V), improving efficiency in low-voltage outputs |
| 50 ns reverse recovery time | Minimizes switching loss and ringing in 50–100 kHz DC/DC converters, reducing EMI filter burden |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance requirements for automotive and industrial end equipment |
| 30 A surge rating (8.3ms) | Withstands repeated inrush events in offline power supplies without degradation |
Applications
| DC/DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Used as output rectifier in isolated flyback or forward converters delivering 3.3–24V at ≤1A. IC Role / Device Role / Timing Role: Unidirectional current path converting high-frequency AC from transformer secondary to regulated DC output. Use Value: 1.0V VF and 50ns trr reduce conduction and switching losses, improving overall efficiency by ~2–3% vs. general-purpose rectifiers. | Use Scenario: Placed across inductive loads (e.g., relay coils, motor windings) in 24V industrial inverters. IC Role / Device Role / Timing Role: Provides low-loss path for inductive kickback current during MOSFET turn-off. Use Value: Fast 50ns recovery prevents voltage overshoot beyond 100V rating, protecting switching devices from avalanche stress. |
| Automotive DC/DC Module | AC-DC Adapter Secondary Side |
Use Scenario: Secondary-side rectifier in 12V→5V/3.3V buck-derived modules for infotainment or ADAS ECUs. IC Role / Device Role / Timing Role: High-reliability rectification under wide ambient (-40°C to +105°C) and vibration conditions. Use Value: AEC-Q101 qualified variants available; glass passivation and 150°C TJMAX ensure long-term stability in under-hood environments. | Use Scenario: Output rectifier in universal-input (90–264V AC) wall adapters delivering ≤1A at 5V/9V/12V. IC Role / Device Role / Timing Role: Converts high-frequency transformer output to clean DC while meeting Class B EMI limits. Use Value: Low CJ (15 pF) minimizes capacitive coupling of switching noise into output, easing EMI compliance. |
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 | VRRM = 400V, trr = 35ns, VF = 1.15V @ 1A - higher voltage rating but slower recovery than HER102G A0G | Suitable for 400V PFC stages; less optimal for 100V-output SMPS due to higher VF | Select when higher reverse voltage margin is needed and faster recovery is not critical |
| ON Semi MUR105 | VRRM = 50V, trr = 75ns, VF = 0.92V @ 1A - lower voltage rating, slower recovery, slightly lower VF | Better for 50V systems with tighter VF budget; unsuitable for 100V reverse stress | Choose only if system VRRM requirement is ≤50V and lowest possible conduction loss is prioritized |
Compared with STTH1R04 and MUR105, HER102G A0G offers the optimal balance of 100V rating, 50ns recovery, and 1.0V forward drop for cost-sensitive 1A DC/DC outputs - avoiding over-spec'd voltage margin or compromised switching speed.
Availability
HER102G A0G is available at Aetrix Electronics and suitable for DC/DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, automotive-grade reliability, and RoHS-compliant packaging.
Supply support for HER102G A0G 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 HER101G–HER108G series targets high-efficiency power conversion in space-constrained, thermally demanding applications - designed specifically for improved thermal performance, fast recovery, and long-term reliability in switching power supplies.
FAQ
What is the maximum junction temperature for HER102G A0G?
The HER102G A0G has a maximum junction temperature (TJMAX) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet (Version L2104). This allows reliable operation in high-ambient environments such as enclosed power modules or under-hood automotive applications when thermal design respects RθJA = 60°C/W.
Is HER102G A0G RoHS and halogen-free compliant?
Yes, HER102G A0G is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the "Features" and "Mechanical Data" sections of the Taiwan Semiconductor HER101G–HER108G datasheet (L2104). The molding compound meets UL 94V-0, and leads are pure tin-plated.
What does the 'A0G' suffix mean in HER102G A0G?
The 'A0G' suffix in HER102G A0G indicates an ammo box packaging option containing 3,000 units per box, using DO-204AL (DO-41) package. Per Taiwan Semiconductor's Ordering Information table, 'A0G' denotes this specific packing format - distinct from tape-and-reel ('HER102G') or AEC-Q101-qualified versions ('HER102GH').
Does HER102G A0G have AEC-Q101 qualification?
No - HER102G A0G itself is not AEC-Q101 qualified. Only variants marked with 'H' (e.g., HER102GH) are AEC-Q101 qualified, as explicitly stated in the Ordering Information section of the Taiwan Semiconductor datasheet (L2104). HER102G A0G shares the same die and construction but lacks formal automotive qualification testing.
What is the reverse recovery time (trr) of HER102G A0G and how is it measured?
The reverse recovery time (trr) of HER102G A0G is 50 ns, measured under conditions of IF = 0.5A, IR = 1.0A, and Irr = 0.25A, per the Electrical Specifications table in the Taiwan Semiconductor datasheet (L2104). This value applies to HER101G–HER105G variants and confirms suitability for medium-frequency switching applications.
HER102G A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- 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 A0G FAQ
1.How can I place an order for HER102G A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER102G A0G 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 A0G reliable?
The price and inventory of HER102G A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER102G A0G is usually 5 days.
3.What payment methods are accepted for HER102G A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER102G A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER102G A0G?
HER102G A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER102G A0G 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 A0G?
For technical support, including HER102G A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER102G A0G requirements.
6.How does Aetrix verify that HER102G A0G is sourced from the original manufacturer or authorized distributors?
All HER102G A0G 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 A0G meets industry standards.
7.What is the process for return or replacement of HER102G A0G?
All HER102G A0G units undergo pre-shipment inspection (PSI). If there is an issue with HER102G A0G, 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 A0G part is unused and in its original packaging.
Return procedure for HER102G A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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