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Taiwan Semiconductor Corporation HER207G
- Part No.:
- HER207G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
HER207G.pdf
- Description:
- DIODE GEN PURP 800V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,320
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Product details
Overview
HER207G from Taiwan Semiconductor is a high-efficiency, glass-passivated silicon rectifier diode rated for 800 V repetitive peak reverse voltage (VRRM), 2 A average forward current (IF), and 60 A non-repetitive surge current (IFSM), used as a freewheeling or output rectifier in switching-mode power supplies.
For engineers reviewing the HER207G datasheet, HER207G pinout, HER207G application, or HER207G equivalent, key selection factors include its 1.7 V max forward voltage at 2 A, 75 ns reverse recovery time, 20 pF junction capacitance at 4 V, DO-204AC (DO-15) package, and AEC-Q101 qualification option (HER207GH).
Technical Context
The HER207G employs a single-die, planar epitaxial construction with glass passivation for enhanced reliability and thermal stability. Its 800 V VRRM rating and 75 ns trr support high-frequency switching in DC–DC converters and inverters where low switching loss and fast recovery are critical.
Designed for operation up to 150 °C junction temperature, it delivers low conduction loss (VF ≤ 1.7 V @ 2 A) and low leakage (IR ≤ 5 µA @ 25 °C), making it suitable for compact, thermally constrained industrial and automotive-grade power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rectification or freewheeling in 400 V AC line-derived or 600 V bus systems |
| IF (AV) | 2 A - continuous DC output current capability without derating below 75 °C ambient |
| IFSM | 60 A - withstands short-duration inrush or fault currents in SMPS primary-side snubbers |
| VF (max) | 1.7 V @ 2 A, 25 °C - limits conduction loss to ≤3.4 W per diode in high-current paths |
| trr | 75 ns - reduces switching loss and EMI in 50–200 kHz hard-switched topologies |
| CJ | 20 pF @ 1 MHz, 4 V - minimizes capacitive coupling and dynamic turn-off delay |
| TJ max | 150 °C - enables operation in sealed enclosures or high-ambient environments without forced cooling |
Pinout & Package
HER207G is housed in a DO-204AC (DO-15) axial-leaded package with cathode indicated by a band. Leads are pure tin-plated and solderable per J-STD-002; molding compound meets UL 94V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck freewheel path) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive or boost inductor output) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable long-term performance under humidity and thermal cycling per JESD22-A101 |
| AEC-Q101 qualified version available | HER207GH meets stress test requirements for automotive under-hood power modules |
| Low VF and trr combination | Reduces total power loss (conduction + switching) vs. standard FR/UF diodes in 100 kHz+ converters |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| DC–DC Converter Output Rectification | Switching Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side synchronous or diode rectification in isolated flyback or forward converters delivering 12–48 V at ≤2 A. IC Role / Device Role / Timing Role: Unidirectional current valve enabling energy transfer from transformer secondary to output capacitor. Use Value: 1.7 V VF and 75 ns trr minimize conduction loss and reverse recovery charge, improving efficiency by ~0.8% over UF4007 in 100 kHz designs. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or solenoids) in half-bridge inverters. IC Role / Device Role / Timing Role: Provides low-loss recirculation path during high-side switch off-time to clamp inductive kickback. Use Value: 60 A IFSM and 800 V VRRM safely absorb 400 V bus transients and 3× motor stall currents without avalanche failure. |
| Industrial AC–DC Power Supply | Automotive On-Board Charger (OBC) Auxiliary Supply |
Use Scenario: Output rectification in 24 V/2 A auxiliary supplies for PLCs, HMIs, and sensor interfaces. IC Role / Device Role / Timing Role: High-reliability discrete rectifier replacing legacy 1N5408 in space-constrained PCB layouts. Use Value: DO-15 footprint compatibility with 30% lower VF than 1N5408 reduces thermal load on heatsinkless designs. | Use Scenario: Isolated auxiliary supply rectification in AEC-Q101-compliant OBC control boards operating at 85–265 V AC input. IC Role / Device Role / Timing Role: Qualified high-voltage rectifier ensuring functional safety compliance for 12 V logic rail generation. Use Value: HER207GH variant provides documented qualification evidence required for ISO 26262 ASIL-B supporting subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R08 | Same VRRM (800 V), IF (2 A), but VF = 1.85 V (max); trr = 65 ns; TO-220AC package | Requires heatsink for >1.2 A continuous; larger footprint; not DO-15 drop-in | Select when higher surge margin or TO-220 mounting is preferred over axial leaded form factor |
| ES2D | Lower VRRM (200 V); VF = 0.95 V (max); trr = 35 ns; same DO-15 package | Only suitable for ≤140 V DC bus applications; insufficient for 400 V+ systems | Choose only for low-voltage, ultra-fast recovery needs where 800 V rating is unnecessary |
Compared with STTH2R08 and ES2D, HER207G uniquely balances 800 V rating, DO-15 compatibility, 1.7 V VF, and 75 ns trr-making it optimal for cost-sensitive, space-constrained 2 A/800 V rectification where thermal management is passive and qualification traceability matters.
Availability
HER207G is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and industrial AC–DC power supplies requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production lots.
Supply support for HER207G 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 HER20xG series was developed to deliver high-efficiency, high-reliability rectification in compact axial packages for switching power conversion-targeting cost-effective replacement of legacy general-purpose rectifiers with measurable VF and trr advantages.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HER207G?
The HER207G has a VRRM rating of 800 V, meaning it can block up to 800 V of reverse voltage continuously without breakdown. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version G2105) and applies under standard test conditions (TA = 25 °C). Designers should maintain ≥20 % voltage margin for reliability in real-world transient conditions.
What is the forward voltage (VF) specification for HER207G at 2 A?
The HER207G exhibits a maximum forward voltage of 1.7 V at 2 A forward current and 25 °C junction temperature, as specified in the Electrical Specifications table. This VF value is measured under pulsed conditions (PW = 0.3 ms) and represents worst-case conduction loss-actual VF decreases slightly at lower currents or higher temperatures.
Does HER207G have AEC-Q101 qualification?
The base HER207G is not AEC-Q101 qualified; however, the HER207GH variant-identical in electrical specs and DO-15 packaging-is explicitly qualified per AEC-Q101. The "H" suffix denotes qualification, and this version is documented in the Ordering Information section of the Taiwan Semiconductor datasheet (G2105).
What is the reverse recovery time (trr) of HER207G?
The HER207G has a maximum reverse recovery time of 75 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is shared with HER206G and HER208G and reflects its optimized fast-recovery behavior for use in medium-frequency switching applications up to 200 kHz.
What package type does HER207G use, and what are its key mechanical features?
HER207G uses the DO-204AC (DO-15) axial-leaded package. Key mechanical features include glass-passivated chip junction, pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, cathode polarity marked by a band, and approximate weight of 0.400 g-enabling manual or automated through-hole assembly.
HER207G 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 FAQ
1.How can I place an order for HER207G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER207G 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 reliable?
The price and inventory of HER207G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER207G is usually 5 days.
3.What payment methods are accepted for HER207G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER207G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER207G?
HER207G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER207G 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?
For technical support, including HER207G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER207G requirements.
6.How does Aetrix verify that HER207G is sourced from the original manufacturer or authorized distributors?
All HER207G 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 meets industry standards.
7.What is the process for return or replacement of HER207G?
All HER207G units undergo pre-shipment inspection (PSI). If there is an issue with HER207G, 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 part is unused and in its original packaging.
Return procedure for HER207G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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