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Taiwan Semiconductor Corporation HERA805GH
- Part No.:
- HERA805GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
HERA805GH.pdf
- Description:
- 50NS, 8A, 400V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:950
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Product details
Overview
HERA805GH from Taiwan Semiconductor is an AEC-Q101-qualified, high-efficiency 8A, 400V repetitive peak reverse voltage (VRRM) glass-passivated silicon rectifier in TO-220AC package, featuring 1.3V forward voltage at 8A/25°C, 50ns reverse recovery time, and 65pF junction capacitance - used in automotive-grade DC-DC converters and freewheeling paths.
For engineers reviewing the HERA805GH datasheet, HERA805GH pinout, HERA805GH application, or HERA805GH equivalent, key selection considerations include its AEC-Q101 qualification, 400V VRRM rating, 150A surge capability, thermal resistance of 2°C/W, and TO-220AC mechanical compatibility with standard heatsink mounting.
Technical Context
This device is a single-die, unidirectional, fast-recovery power rectifier optimized for switching-mode power supplies where low conduction loss and rapid turn-off are critical. Its glass-passivated junction ensures stable operation under high-humidity and thermal-cycling conditions typical in automotive environments.
The HERA805GH operates across –55°C to +150°C junction temperature range, supports 0.56 N·m mounting torque, and meets JESD201 Class 2 whisker resistance and RoHS/halogen-free compliance per IEC 61249-2-21 - confirming suitability for under-hood automotive power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum non-repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling clamping circuits |
| IF | 8 A - continuous average forward current at case temperature ≤75°C; sets baseline conduction capacity for 12–48V DC-DC stages |
| IFSM | 150 A - peak non-repetitive surge current (8.3ms half-sine); enables robustness against load dump or startup transients |
| VF @ 8A, 25°C | 1.3 V - forward voltage drop; directly determines conduction loss (10.4W at full load) and thermal design margin |
| trr | 50 ns - reverse recovery time; limits switching losses and EMI generation in 100–500kHz SMPS topologies |
| RθJC | 2 °C/W - junction-to-case thermal resistance; allows accurate heatsink sizing when mounted with recommended torque |
| CJ @ 1MHz, 4V | 65 pF - junction capacitance; influences high-frequency noise coupling and snubber design in high-dV/dt applications |
Pinout & Package
TO-220AC package: single-ended, 3-lead outline with center tab (cathode), outer leads (anode and cathode). Mounting hole centered on tab; matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (left) | Anode | Main current entry point; electrically isolated from tab; connects to input/high-side node in buck/flyback |
| Tab (center) | Cathode | Primary heat path and electrical return; must be electrically isolated from chassis unless circuit requires common-cathode configuration |
| Lead 2 (right) | Cathode | Secondary cathode connection; used for Kelvin sensing or low-inductance return routing in precision designs |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power electronics including engine control units and ADAS power rails |
| Glass-passivated junction | Prevents moisture ingress and metallization corrosion during 1000+ thermal cycles (–40°C to +125°C) |
| Low VF (1.3V @ 8A) | Reduces conduction loss by ~18% vs. comparable 400V rectifiers with VF >1.6V, improving efficiency in 12V–48V systems |
| Fast trr (50ns) | Enables operation up to 500kHz without excessive switching loss or ringing in synchronous rectifier auxiliary paths |
| Halogen-free & RoHS | Complies with EU ELV Directive and automotive OEM material declarations (e.g., Ford WSS-M99P9999-A1) |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Inverters |
|---|---|
Use Scenario: Step-down conversion from 48V battery to 12V subsystem rail in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Primary output rectifier in synchronous or quasi-resonant flyback topology. Use Value: AEC-Q101 rating and 150A IFSM ensure reliability during cold-crank and load-dump events per ISO 16750-2. | Use Scenario: Output stage rectification in 3kW industrial UPS inverters with 20kHz PWM switching. IC Role / Device Role / Timing Role: Freewheeling diode across IGBTs in H-bridge output stage. Use Value: 50ns trr minimizes tail current overlap loss and reduces gate drive stress on adjacent IGBTs. |
| Solar Microinverter Auxiliary Power | Server PSU Hold-Up Circuits |
Use Scenario: Isolated auxiliary supply powering gate drivers and sensors in string-level solar microinverters. IC Role / Device Role / Timing Role: Secondary-side rectifier in 300kHz forward converter delivering 12V/1A bias rail. Use Value: 65pF CJ and low VF reduce EMI filter size while maintaining >92% auxiliary efficiency at full load. | Use Scenario: Input-stage rectification feeding bulk capacitor in 1U server PSUs with 10ms hold-up requirement. IC Role / Device Role / Timing Role: Bridge leg diode in active clamp forward or LLC resonant converter PFC front-end. Use Value: 2°C/W RθJC enables direct-tab heatsinking to chassis, eliminating need for thermal pads in space-constrained 1U enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8R04DJF | 400V VRRM, 8A IF, 1.25V VF @ 8A, 45ns trr, TO-220AC, no AEC-Q101 | Higher efficiency but lacks automotive qualification; not suitable for under-hood deployment | Select when cost-sensitive industrial SMPS require marginal VF improvement and qualification is unnecessary |
| VS-8EWH04FN-M3 | 400V VRRM, 8A IF, 1.35V VF @ 8A, 60ns trr, TO-220AC, AEC-Q101 qualified | Slightly higher VF and slower recovery; identical thermal and packaging specs | Choose when second-source assurance is required and 0.05V/5ns trade-off is acceptable for supply chain resilience |
Compared with STTH8R04DJF and VS-8EWH04FN-M3, the HERA805GH uniquely balances AEC-Q101 compliance, 1.3V VF, and 50ns trr in TO-220AC - making it optimal for automotive DC-DC where qualification and dynamic performance are jointly mandated.
Availability
HERA805GH is available at Aetrix Electronics and suitable for automotive power conversion, industrial UPS systems, and solar microinverter auxiliary supplies requiring stable component supply and long-term lifecycle support.
Supply support for HERA805GH 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 power discrete manufacturer headquartered in Hsinchu, Taiwan, serving automotive, industrial, and computing markets since 1979.
The HERA805GH belongs to TSC's AEC-Q101-qualified HERA series of high-efficiency rectifiers, engineered specifically for high-reliability 12–48V automotive power systems and high-frequency industrial SMPS where low VF and fast trr are critical.
FAQ
What is the maximum junction temperature rating for the HERA805GH?
The HERA805GH has a maximum junction temperature (TJ MAX) of +150°C, verified per absolute maximum ratings table. This rating enables operation in under-hood automotive environments and high-ambient industrial settings when paired with appropriate heatsinking per its 2°C/W RθJC specification. The HERA805GH maintains parameter stability up to this limit under continuous 8A conduction.
Is the HERA805GH pin-compatible with other devices in the HERA80xG family?
Yes, all HERA80xG and HERA80xGH devices share identical TO-220AC package dimensions, lead frame layout, and pinout - including HERA805GH. Voltage ratings differ across the family (50V to 1000V), but mechanical and thermal mounting requirements, terminal polarity, and solderability specifications remain fully consistent across HERA801G through HERA808G variants.
Does the HERA805GH meet halogen-free requirements?
Yes, the HERA805GH complies with halogen-free standards per IEC 61249-2-21 and is RoHS-compliant. Its molding compound contains no chlorine or bromine-based flame retardants, and the matte tin-plated leads satisfy J-STD-002 solderability. These attributes are confirmed in the official Taiwan Semiconductor datasheet revision J2103 for HERA805GH.
What is the reverse recovery time (trr) specification for HERA805GH, and under what test conditions?
The HERA805GH has a maximum reverse recovery time (trr) of 50ns, measured at IF = 0.5A, IR = 1.0A, and Irr = 0.25A per the datasheet's Electrical Specifications table. This value applies to HERA801G–HERA805G variants and reflects performance at 25°C ambient, supporting high-frequency switching in DC-DC converters up to 500kHz without excessive loss.
Can HERA805GH be used in surface-mount designs?
No, the HERA805GH is only offered in through-hole TO-220AC package and is not suitable for surface-mount assembly. Its mechanical construction - including center tab for heatsinking and lead spacing - requires wave soldering or hand-soldering with mechanical mounting. For SMT alternatives, engineers should evaluate TSC's surface-mount equivalents such as the HERA805G-SMD series, not the HERA805GH.
HERA805GH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 400 V
- Capacitance @ Vr, F:
- 65pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
HERA805GH FAQ
1.How can I place an order for HERA805GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HERA805GH 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 HERA805GH reliable?
The price and inventory of HERA805GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HERA805GH is usually 5 days.
3.What payment methods are accepted for HERA805GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HERA805GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HERA805GH?
HERA805GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HERA805GH 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 HERA805GH?
For technical support, including HERA805GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HERA805GH requirements.
6.How does Aetrix verify that HERA805GH is sourced from the original manufacturer or authorized distributors?
All HERA805GH 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 HERA805GH meets industry standards.
7.What is the process for return or replacement of HERA805GH?
All HERA805GH units undergo pre-shipment inspection (PSI). If there is an issue with HERA805GH, 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 HERA805GH part is unused and in its original packaging.
Return procedure for HERA805GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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