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Taiwan Semiconductor Corporation HER107G-K
- Part No.:
- HER107G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER107G-K.pdf
- Description:
- 75NS, 1A, 800V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:9,029
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Product details
Overview
HER107G-K from Taiwan Semiconductor is a high-efficiency, single-die silicon rectifier diode in DO-204AL (DO-41) package, rated for 1 A average forward current, 800 V repetitive peak reverse voltage (VRRM), and 30 A non-repetitive surge current (IFSM). It features low forward voltage (1.7 V at 1 A, 25°C), fast recovery time (75 ns), and glass-passivated junction for reliability in power conversion stages.
For engineers reviewing the HER107G-K datasheet, HER107G-K pinout, HER107G-K application, or HER107G-K equivalent, key selection criteria include its 800 V VRRM rating, 75 ns trr for switching-mode efficiency, thermal resistance (RθJA = 60°C/W), RoHS/halogen-free compliance, and suitability for freewheeling and DC-DC converter output rectification.
Technical Context
The HER107G-K is a standard recovery rectifier optimized for high-voltage, medium-current switching applications. Its 800 V VRRM and 1.7 V VF at 1 A reflect trade-offs between blocking capability and conduction loss, while the 75 ns reverse recovery time enables operation up to several hundred kHz in SMPS topologies.
Thermally, it uses a glass-passivated chip junction with RθJC = 15°C/W and RθJA = 60°C/W, supporting 1 A continuous operation at ≤75°C ambient when mounted on standard PCB copper. Polarity is marked by cathode band; leads are pure tin-plated per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rectification in 400 VAC line-derived supplies or 600 V bus systems |
| IF(AV) | 1 A - delivers continuous DC output current in compact offline adapters and auxiliary rails |
| VF @ 1A, 25°C | 1.7 V - contributes ~1.7 W conduction loss at full load, requiring thermal management |
| trr | 75 ns - limits switching losses in 100–300 kHz flyback and forward converters |
| IFSM (8.3 ms) | 30 A - withstands inrush and transient overloads without failure |
| RθJA | 60 °C/W - requires ≥1 cm² of 1-oz copper pad for safe 1 A operation at 70°C ambient |
| IR @ 800 V, 25°C | 5 µA - ensures minimal leakage in high-impedance hold-up or sensing circuits |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, glass-passivated silicon die, cathode indicated by band. Weight: 0.330 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output capacitor positive rail; blocks 800 V reverse voltage during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable long-term operation under humidity and thermal cycling without encapsulation degradation |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance for industrial and consumer end-equipment |
| JESD 201 Class 1A whisker resistance | Prevents tin whisker growth in high-reliability applications with >10-year field life |
| UL 94V-0 molding compound | Provides flame-retardant housing essential for safety-certified power supplies |
Applications
| Offline AC-DC Adapters | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: 12 V/1 A output stage in universal-input (90–264 VAC) wall adapters for networking equipment. IC Role / Device Role / Timing Role: Primary output rectifier converting high-frequency transformer secondary AC to regulated DC. Use Value: 800 V VRRM safely handles reflected voltage spikes; 75 ns trr minimizes switching loss at 250 kHz operation. | Use Scenario: Secondary-side rectification in isolated 48 V → 5 V flyback converter for PoE-powered devices. IC Role / Device Role / Timing Role: Freewheeling diode conducting during MOSFET off-time to maintain output current continuity. Use Value: 1.7 V VF balances conduction loss vs. thermal footprint; DO-41 package allows manual or automated through-hole assembly. |
| Switching Inverters | Industrial Power Supplies |
Use Scenario: DC link clamping and freewheeling in 24 V input H-bridge inverters for motor control. IC Role / Device Role / Timing Role: Bidirectional clamp path absorbing inductive kickback during PWM transitions. Use Value: 30 A IFSM withstands motor stall surges; glass passivation ensures robustness in dusty, vibrating environments. | Use Scenario: Auxiliary bias supply rectification in 3 kW telecom rectifier modules. IC Role / Device Role / Timing Role: Input-stage rectifier feeding standby controller and gate drivers. Use Value: 5 µA IR at 25°C prevents standby current drift; UL 94V-0 compound meets EN 62368-1 flammability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R08 | Same 800 V VRRM, 1 A IF, but faster trr (50 ns); VF slightly higher (1.85 V) | Better suited for >300 kHz designs where recovery loss dominates | Prefer STTH1R08 if operating frequency exceeds 250 kHz and thermal margin allows higher VF |
| 1N5408G | Lower VRRM (1000 V), same IF, but slower trr (2000 ns); VF ~1.2 V at 1 A | Optimized for linear supply or low-frequency (<20 kHz) rectification, not SMPS | Select 1N5408G only for cost-sensitive, non-switching applications where speed is irrelevant |
Compared with HER107G-K, STTH1R08 offers superior high-frequency efficiency at the cost of higher conduction loss, while 1N5408G trades speed for lower VF and higher ruggedness-making HER107G-K the balanced choice for 100–300 kHz SMPS output stages requiring reliability, thermal manageability, and regulatory compliance.
Availability
HER107G-K is available at Aetrix Electronics and suitable for offline AC-DC adapters, DC-DC converter output rectification, and industrial power supplies requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for HER107G-K 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 rectifiers, TVS diodes, MOSFETs, and bipolar transistors for industrial and power applications.
The HER10xG-K series was designed specifically for high-efficiency, high-reliability switching power supplies-emphasizing fast recovery, low leakage, and robust packaging to meet stringent safety and longevity requirements in commercial and industrial equipment.
FAQ
What is the maximum junction temperature for HER107G-K?
The HER107G-K has a maximum junction temperature (TJ MAX) of +150°C, as specified in the Absolute Maximum Ratings table. This limit must not be exceeded during operation. Derating curves show that at 75°C ambient, the device supports full 1 A DC current with adequate PCB copper area; exceeding TJ MAX risks permanent degradation of the glass-passivated junction and increased reverse leakage.
Is HER107G-K RoHS and halogen-free compliant?
Yes, HER107G-K is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants, and the pure tin-plated leads meet J-STD-002 solderability standards. These attributes are confirmed in the Mechanical Data and Features sections of the official TSC datasheet Version B2104.
What does the 'G-K' suffix indicate in HER107G-K?
The 'G' denotes green (halogen-free) molding compound, and 'K' indicates tape-and-reel packaging (5,000 units per reel). This ordering code format is standardized across the HER101G-K to HER108G-K family, with 'x' in HER1xG-K representing the voltage grade (7 = 800 V). The marking on the device reads 'HER107G'.
Can HER107G-K replace HER106G-K or HER108G-K in a design?
HER107G-K may replace HER106G-K (600 V) if the circuit's peak reverse voltage remains ≤800 V; however, it cannot substitute for HER108G-K (1000 V) in 1000 V-rated applications without violating VRRM margin. All share identical package, VF, trr, and thermal specs-only VRRM differs across the family. Always verify worst-case voltage stress before substitution.
What is the reverse recovery time (trr) test condition for HER107G-K?
The HER107G-K reverse recovery time is measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the Electrical Specifications table. This standardized test reflects real-world commutation behavior in flyback and forward converters. The typical trr is 75 ns, with no maximum value specified-designers should use this typical value with appropriate safety margin in loss calculations.
HER107G-K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER107G-K FAQ
1.How can I place an order for HER107G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for HER107G-K 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 HER107G-K reliable?
The price and inventory of HER107G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER107G-K is usually 5 days.
3.What payment methods are accepted for HER107G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER107G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER107G-K?
HER107G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER107G-K 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 HER107G-K?
For technical support, including HER107G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER107G-K requirements.
6.How does Aetrix verify that HER107G-K is sourced from the original manufacturer or authorized distributors?
All HER107G-K 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 HER107G-K meets industry standards.
7.What is the process for return or replacement of HER107G-K?
All HER107G-K units undergo pre-shipment inspection (PSI). If there is an issue with HER107G-K, 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 HER107G-K part is unused and in its original packaging.
Return procedure for HER107G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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