My Inquiry
My Account
Taiwan Semiconductor Corporation HERA801G C0G
- Part No.:
- HERA801G C0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
HERA801G C0G.pdf
- Description:
- DIODE GEN PURP 50V 8A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,967
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HERA801G from Taiwan Semiconductor is a glass-passivated, single-die, high-efficiency 50 V repetitive peak reverse voltage (VRRM) rectifier diode rated for 8 A average forward current (IF), 150 A non-repetitive surge current (IFSM), and 150 °C maximum junction temperature - used in DC-DC converters and switching-mode power supplies.
For engineers reviewing the HERA801G datasheet, HERA801G pinout, HERA801G application, or HERA801G equivalent, key selection criteria include its TO-220AC package thermal resistance (RθJC = 2 °C/W), low 1.0 V forward voltage at 8 A/25 °C, <10 µA reverse leakage at 25 °C, 65 pF junction capacitance, and 50 ns reverse recovery time.
Technical Context
The HERA801G is a fast-recovery, planar-junction silicon rectifier optimized for high-frequency switching applications. Its 50 V VRRM rating, 1.0 V VF at 8 A, and 50 ns trr enable efficient operation in compact DC-DC converters where conduction loss and switching loss trade-offs are critical.
Thermally, it features a low 2 °C/W junction-to-case thermal resistance in the TO-220AC package and supports continuous operation up to 150 °C junction temperature. The device meets JESD201 Class 2 whisker resistance and RoHS/halogen-free compliance per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe operating range in flyback/freewheeling paths |
| IF | 8 A - Continuous average forward current at TC = 100 °C; determines heatsink sizing in power supply output stages |
| IFSM | 150 A - Non-repetitive surge current (8.3 ms half-sine); withstands inrush and fault transients without failure |
| VF @ 8 A, 25 °C | 1.0 V - Forward voltage drop; directly impacts conduction loss (Pcond ≈ IF × VF) in high-current paths |
| trr | 50 ns - Reverse recovery time; limits minimum switching frequency and reduces switching losses in SMPS |
| RθJC | 2 °C/W - Junction-to-case thermal resistance; enables precise thermal modeling when mounted to heatsink |
| IR @ 25 °C | <10 µA - Reverse leakage current at rated VR; ensures minimal standby power loss in high-impedance circuits |
Pinout & Package
Package: TO-220AC - 3-lead, through-hole, single-ended heat sinkable package with matte tin-plated leads compliant with J-STD-002 solderability and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to input/high-side node in freewheeling or output rectification paths |
| Cathode (Lead 2) | Forward current exit point | Connected to ground/common return or output filter capacitor negative terminal |
| Case / Tab (Lead 3) | Electrically connected to cathode | Provides mechanical mounting surface and thermal path; must be electrically isolated unless cathode-referenced heatsinking is intended |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enhances long-term reliability and moisture resistance in humid or thermally cycled environments |
| AEC-Q101 qualified version available (HERA801GH) | Validated for automotive under-hood applications requiring extended temperature and stress robustness |
| Low VF (1.0 V @ 8 A) | Reduces conduction losses by ~15–20% vs. standard 1.2 V rectifiers at same current, improving efficiency in 12 V output rails |
| Fast trr (50 ns) | Enables stable operation up to ~200 kHz switching frequencies without excessive ringing or EMI in boost/flyback topologies |
| Junction-to-case RθJC = 2 °C/W | Allows direct thermal coupling to heatsinks; achieves ≤100 °C junction rise with ≤20 W dissipation at 25 °C ambient |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Used as secondary-side synchronous or non-synchronous rectifier in isolated 5–24 V DC-DC converters delivering up to 8 A continuous load. IC Role / Device Role / Timing Role: HERA801G serves as unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output. Use Value: Its 1.0 V VF minimizes conduction loss in low-voltage, high-current outputs; 50 ns trr prevents cross-conduction in quasi-resonant designs. | Use Scenario: Placed across inductive loads (e.g., motor windings, solenoids) in H-bridge inverters to clamp back-EMF during PWM off-time. IC Role / Device Role / Timing Role: HERA801G acts as a freewheeling diode providing low-impedance recirculation path for stored inductive energy. Use Value: Withstands 150 A surge peaks and operates reliably at 150 °C junction, ensuring robust protection during rapid PWM transitions. |
| Industrial Power Supply Input Stage | Automotive Auxiliary Power Module |
Use Scenario: Employed in bridge rectifier configurations or as discrete input rectifier in 100–240 VAC front-end SMPS for industrial control systems. IC Role / Device Role / Timing Role: HERA801G functions as a high-current, high-reliability rectifying element in AC line input or PFC boost output stages. Use Value: Glass passivation and JESD201 Class 2 whisker resistance ensure stable performance over 10+ years in vibration-prone factory environments. | Use Scenario: Integrated into 12 V auxiliary power modules for infotainment, ADAS cameras, or body control units in passenger vehicles. IC Role / Device Role / Timing Role: HERA801G provides rectification in buck-derived local supplies where AEC-Q101 qualification (via HERA801GH variant) is required. Use Value: Meets automotive thermal cycling (-40 °C to +125 °C case) and surge immunity requirements while maintaining <10 µA leakage at elevated temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8R06D (STMicroelectronics) | 600 V VRRM, 1.7 V VF @ 8 A, 60 ns trr, TO-220AC | Higher voltage rating but higher VF; suited for universal-input or higher-VOUT designs | Select when >50 V reverse blocking is needed; not drop-in for HERA801G's 50 V use case |
| VS-8EWH06FN-M3 (Vishay) | 60 V VRRM, 0.92 V VF @ 8 A, 45 ns trr, TO-220AC | Nearly identical voltage rating and superior speed/VF; halogen-free, AEC-Q101 qualified | Direct functional alternative with marginally better efficiency and automotive qualification |
Compared with STTH8R06D and VS-8EWH06FN-M3, the HERA801G offers the lowest VRRM (50 V) and moderate VF/trr balance ideal for cost-sensitive, fixed-input 12–24 V systems - whereas STTH8R06D targets higher-voltage universality and VS-8EWH06FN-M3 delivers tighter performance for automotive-grade 12 V rails.
Availability
HERA801G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching-mode inverter freewheeling, and industrial power supply input stages requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for HERA801G 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 Taiwanese manufacturer specializing in discrete power semiconductors, including rectifiers, TVS diodes, MOSFETs, and IGBTs for industrial and automotive markets.
The HERA series was developed as a family of high-efficiency, glass-passivated rectifiers targeting high-reliability power conversion in space-constrained, thermally demanding applications - with HERA801G specifically optimized for 50 V, 8 A fixed-input systems.
FAQ
What is the maximum junction temperature rating for HERA801G?
The HERA801G has a maximum junction temperature (TJ MAX) of +150 °C, enabling reliable operation in high-ambient environments such as enclosed power supplies or under-hood automotive modules. This rating is maintained across its full current and voltage operating range, provided thermal design respects the 2 °C/W junction-to-case resistance and appropriate heatsinking is applied.
Is HERA801G suitable for automotive applications?
Yes - the HERA801G itself is not AEC-Q101 qualified, but its pin-compatible variant HERA801GH is explicitly qualified to AEC-Q101. Engineers designing for automotive use should specify HERA801GH to meet stress-test requirements for temperature cycling, humidity, and mechanical vibration in passenger vehicle systems.
What is the forward voltage drop of HERA801G at rated current?
The HERA801G exhibits a typical forward voltage (VF) of 1.0 V at 8 A forward current and 25 °C junction temperature, measured under pulsed conditions (PW = 0.3 ms). At higher temperatures or continuous DC operation, VF decreases slightly due to negative temperature coefficient, but thermal design must ensure TJ remains within 150 °C limit.
Does HERA801G have a specified reverse recovery time?
Yes - the HERA801G has a maximum reverse recovery time (trr) of 50 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This fast recovery supports high-frequency switching in DC-DC converters and reduces switching losses compared to standard recovery rectifiers with trr > 200 ns.
What package type does HERA801G use, and how is it mounted?
HERA801G uses the TO-220AC package - a 3-lead, through-hole outline with an electrically active metal tab (cathode-connected). It is mounted using a maximum torque of 0.56 N·m on the mounting screw, and the tab must be electrically isolated from chassis unless cathode-referenced heatsinking is intentionally designed into the system.
HERA801G C0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 50 V
- Capacitance @ Vr, F:
- 65pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
HERA801G C0G FAQ
1.How can I place an order for HERA801G C0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HERA801G C0G 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 HERA801G C0G reliable?
The price and inventory of HERA801G C0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HERA801G C0G is usually 5 days.
3.What payment methods are accepted for HERA801G C0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HERA801G C0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HERA801G C0G?
HERA801G C0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HERA801G C0G 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 HERA801G C0G?
For technical support, including HERA801G C0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HERA801G C0G requirements.
6.How does Aetrix verify that HERA801G C0G is sourced from the original manufacturer or authorized distributors?
All HERA801G C0G 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 HERA801G C0G meets industry standards.
7.What is the process for return or replacement of HERA801G C0G?
All HERA801G C0G units undergo pre-shipment inspection (PSI). If there is an issue with HERA801G C0G, 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 HERA801G C0G part is unused and in its original packaging.
Return procedure for HERA801G C0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HERA801G C0G Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
