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Taiwan Semiconductor Corporation HER207G-K
- Part No.:
- HER207G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
HER207G-K.pdf
- Description:
- 75NS, 2A, 800V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:2,087
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Product details
Overview
HER207G-K from Taiwan Semiconductor is a 2 A, 800 V high-efficiency glass-passivated silicon rectifier diode in DO-204AC (DO-15) package, featuring low forward voltage (1.7 V @ 2 A), fast reverse recovery time (75 ns), and 60 A surge capability - deployed in DC-DC converters and switching inverters.
For engineers reviewing the HER207G-K datasheet, HER207G-K pinout, HER207G-K application, or HER207G-K equivalent, key selection criteria include repetitive peak reverse voltage (800 V), junction-to-ambient thermal resistance (60 °C/W), reverse recovery time (75 ns), and RoHS/halogen-free compliance for industrial power conversion designs.
Technical Context
This single-die standard recovery rectifier operates with a maximum junction temperature of 150 °C and supports continuous forward current up to 2 A at 25 °C ambient. Its 800 V VRRM rating and 560 V RMS reverse voltage enable use in medium-voltage off-line SMPS front-end and freewheeling paths.
The device exhibits 20 pF junction capacitance at 1 MHz/4 V and reverse leakage of only 5 µA at 25 °C - critical for minimizing switching losses and EMI in high-frequency converters. Thermal resistance of 60 °C/W requires careful PCB copper area planning for sustained 2 A operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rectification in 380–400 VAC systems with safety margin |
| IF | 2 A continuous - suitable for mid-power DC-DC stages without forced cooling |
| IFSM | 60 A (8.3 ms half-sine) - withstands inrush and transient surges in SMPS startup |
| VF | 1.7 V max @ 2 A, 25 °C - reduces conduction loss vs. general-purpose rectifiers |
| trr | 75 ns max - enables efficient operation up to ~100 kHz switching frequencies |
| RθJA | 60 °C/W - requires ≥1 cm² 2-oz copper pad for full 2 A derating at 70 °C ambient |
| Junction temp | −55 to +150 °C - rated for industrial ambient and internal heating in enclosed enclosures |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, glass-passivated, cathode indicated by band. Leads are pure tin-plated, J-STD-002 solderable, UL 94V-0 molded compound.
| 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 800 V reverse during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances moisture resistance and long-term reliability in humid environments vs. epoxy-passivated alternatives |
| Low VF (1.7 V) | Reduces conduction loss by ~15% compared to standard 1N4007-class diodes at 2 A |
| 75 ns trr | Enables higher-frequency operation than general-purpose rectifiers (e.g., 1N5408: >2000 ns), lowering switching loss |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive - required for export to EU/China markets |
| 60 A IFSM | Supports robust startup in flyback and forward converters without external surge limiting |
Applications
| DC-DC Converter Primary Rectification | Switching Inverter Freewheeling Path |
|---|---|
Use Scenario: Rectifying 380 VAC input in isolated offline DC-DC converters delivering 24 V/2 A output. IC Role / Device Role / Timing Role: Standard recovery rectifier handling unidirectional current flow and blocking reverse voltage during transformer reset. Use Value: 800 V VRRM provides 2× safety margin over peak line voltage; 1.7 V VF limits conduction loss to <3.4 W at full load. | Use Scenario: Freewheeling path across inductive loads in 48 V battery-powered motor inverters. IC Role / Device Role / Timing Role: Provides low-loss return path for inductor current during MOSFET off-time in H-bridge configurations. Use Value: 75 ns trr minimizes reverse recovery charge, reducing shoot-through risk and switching loss in 20–50 kHz PWM operation. |
| Industrial Power Supply Output Stage | UPS Input Rectifier Module |
Use Scenario: Secondary-side output rectification in 48 V telecom power supplies with synchronous rectification assist. IC Role / Device Role / Timing Role: Standby or auxiliary rectifier supporting control circuitry when main SR FETs are inactive. Use Value: 2 A IF and 60 °C/W RθJA allow direct mounting on FR4 with minimal copper - simplifies layout vs. SMD alternatives. | Use Scenario: Input bridge rectifier in line-interactive UPS units accepting 230 VAC ±15% input. IC Role / Device Role / Timing Role: High-reliability AC line rectification with surge immunity for battery charging circuits. Use Value: 60 A IFSM handles 10× nominal current surges during brownout recovery; cathode band ensures correct polarity in manual assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R08 | 800 V VRRM, 2 A IF, but faster trr = 35 ns; TO-220AC package (higher thermal mass) | Preferred where board space allows TO-220 and sub-50 ns recovery is needed for >200 kHz designs | Select STTH2R08 if higher thermal budget and faster recovery outweigh axial-leaded form factor constraints |
| ES2D | 200 V VRRM, same DO-15 package and 2 A rating; ultrafast (trr = 35 ns), lower VF (1.15 V) | Limited to low-voltage DC-DC outputs (<100 V); unsuitable for 380 VAC rectification | Choose ES2D only for secondary-side 12–48 V rectification where 800 V blocking is unnecessary |
Compared with STTH2R08 and ES2D, the HER207G-K uniquely balances 800 V blocking, axial DO-15 compatibility, and cost-effective standard recovery performance - making it optimal for legacy-compatible, medium-voltage industrial power supplies where TO-220 footprint or ultrafast recovery are not required.
Availability
HER207G-K is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, long-lifecycle availability, and RoHS-compliant manufacturing.
Supply support for HER207G-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, serving industrial, computing, and consumer markets since 1979.
The HER207G-K belongs to TSC's high-efficiency rectifier family designed specifically for reliable, cost-optimized AC-DC and DC-DC power conversion in industrial equipment and energy infrastructure.
FAQ
What is the maximum repetitive peak reverse voltage rating for HER207G-K?
The HER207G-K has a maximum repetitive peak reverse voltage (VRRM) of 800 V, verified per Taiwan Semiconductor's D2106 datasheet. This rating defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown. It is distinct from the HER208G-K variant, which is rated at 1000 V. Designers must ensure system peak reverse stress remains below 800 V with appropriate safety margin.
Does HER207G-K support surface-mount assembly?
No, the HER207G-K uses a through-hole DO-204AC (DO-15) package with axial leads and is not compatible with SMT reflow or pick-and-place processes. It requires wave soldering or hand soldering. For surface-mount equivalents, consider TSC's SMD rectifier series such as the HER207G-S, but note that HER207G-K itself is strictly through-hole.
What is the forward voltage drop of HER207G-K at rated current?
The HER207G-K exhibits a maximum forward voltage (VF) of 1.7 V at 2 A forward current and 25 °C junction temperature, per electrical specifications in the D2106 datasheet. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating. At elevated temperatures or continuous DC, VF decreases slightly due to negative temperature coefficient of silicon.
Is HER207G-K compliant with RoHS and halogen-free standards?
Yes, the HER207G-K is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the "Features" section of the official Taiwan Semiconductor datasheet (Version D2106). The molding compound contains no brominated flame retardants, and the pure tin-plated leads meet J-STD-002 solderability requirements without lead or halogen additives.
What is the reverse recovery time specification for HER207G-K?
The HER207G-K has a maximum reverse recovery time (trr) of 75 ns, tested under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter reflects its standard recovery behavior - faster than general-purpose rectifiers (e.g., 1N4007) but slower than ultrafast types. It is suitable for switching frequencies up to approximately 100 kHz in well-designed layouts.
HER207G-K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER207G-K FAQ
1.How can I place an order for HER207G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for HER207G-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 HER207G-K reliable?
The price and inventory of HER207G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER207G-K is usually 5 days.
3.What payment methods are accepted for HER207G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER207G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER207G-K?
HER207G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER207G-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 HER207G-K?
For technical support, including HER207G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER207G-K requirements.
6.How does Aetrix verify that HER207G-K is sourced from the original manufacturer or authorized distributors?
All HER207G-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 HER207G-K meets industry standards.
7.What is the process for return or replacement of HER207G-K?
All HER207G-K units undergo pre-shipment inspection (PSI). If there is an issue with HER207G-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 HER207G-K part is unused and in its original packaging.
Return procedure for HER207G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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