Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation HERA802G C0G

Name: HERA802G C0G
Brand: Taiwan Semiconductor Corporation
SKU: HERA802G C0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: HERA802G C0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: HERA802G C0G.pdf

Description:: DIODE GEN PURP 100V 8A TO220AC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:8,530

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

HERA802G from Taiwan Semiconductor is an AEC-Q101-qualified, glass-passivated, single-die ultrafast recovery rectifier in TO-220AC package, rated for 100 V repetitive peak reverse voltage (V_RRM), 8 A average forward current (I_F), and 150 A non-repetitive surge current (I_FSM). It delivers low 1.0 V forward voltage at 8 A and 25°C, enabling high-efficiency operation in DC-DC converters and freewheeling paths.

For engineers reviewing the HERA802G datasheet, HERA802G pinout, HERA802G application, or HERA802G equivalent, key selection criteria include its 100 V V_RRM, 50 ns reverse recovery time (t_rr), 65 pF junction capacitance, 2 °C/W junction-to-case thermal resistance, and TO-220AC mechanical compatibility with standard heatsink mounting.

Technical Context

The HERA802G is a single-die, ultrafast recovery silicon rectifier optimized for switching-mode power supplies. Its 50 ns t_rr and low Q_rr minimize switching losses during commutation, while the glass-passivated junction ensures robustness against moisture and contamination.

Designed for unidirectional conduction in hard-switched topologies, it operates with a maximum junction temperature of 150°C and supports continuous I_F = 8 A at case temperatures up to 95°C per derating curve. The device exhibits 10 µA max reverse leakage at 25°C and 400 µA at 125°C under rated V_R.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse blocking voltage; defines usable input voltage range in flyback or boost stages
I_F	8 A - Continuous average forward current at T_C = 75°C; determines heatsink sizing for steady-state conduction loss
t_rr	50 ns - Ultrafast reverse recovery time; reduces turn-off switching loss and EMI in 100–500 kHz SMPS
V_F	1.0 V @ 8 A, 25°C - Low forward drop improves efficiency and reduces thermal load in high-current paths
R_θJC	2 °C/W - Junction-to-case thermal resistance; enables direct thermal interface to heatsink without thermal pad penalty
C_J	65 pF @ 1 MHz, 4 V - Low junction capacitance minimizes capacitive coupling and dv/dt-induced turn-on risk

Pinout & Package

Package: TO-220AC - 3-lead, single-ended, through-hole power package with isolated tab (cathode-connected), matte tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and 0.56 N·m max mounting torque.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Input terminal for forward conduction	Connected to source/switch node; must withstand full I_F and transient I_FSM stress
Cathode	Output terminal for forward conduction; electrically tied to metal tab	Provides low-inductance return path and thermal interface; requires insulated mounting if not referenced to chassis ground
Tab (Cathode)	Thermal and electrical extension of cathode	Enables direct heatsink attachment; isolation required when cathode is not at system ground potential

Key Features

Feature	Design Value
Glass-passivated junction	Ensures long-term reliability in humid or chemically aggressive environments without hermetic sealing
AEC-Q101 qualification (HERA802GH variant)	Validates robustness for automotive under-hood applications including temperature cycling and mechanical shock
Ultrafast 50 ns t_rr	Reduces switching loss and diode reverse recovery ringing in high-frequency converters (>200 kHz)
RoHS & halogen-free compliance	Meets IEC 61249-2-21 and global environmental regulations for industrial and automotive production

Applications

DC-DC Converter Output Rectification	Switching Mode Inverter Freewheeling
Use Scenario: Secondary-side rectification in isolated 48 V–12 V buck-derived DC-DC modules for telecom and server PSUs. IC Role / Device Role / Timing Role: Unidirectional current valve conducting during transformer secondary positive half-cycle; handles 8 A DC output with minimal conduction loss. Use Value: 1.0 V V_F at 8 A reduces power dissipation by ~0.8 W vs. standard FRD alternatives, lowering heatsink requirements.	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 current recirculation path during high-side switch off-time; clamps inductive kickback with fast t_rr. Use Value: 50 ns t_rr limits reverse recovery charge (Q_rr) and associated switching loss, improving inverter efficiency at 50–200 kHz PWM frequencies.
Automotive On-Board Charger (OBC) Auxiliary Supply	Industrial AC-DC Front-End Rectification
Use Scenario: Input rectification stage in auxiliary 12 V supply derived from OBC's high-voltage DC bus (e.g., 400 V nominal). IC Role / Device Role / Timing Role: High-reliability rectifier converting AC auxiliary winding output to DC; operates continuously at elevated ambient temperatures. Use Value: AEC-Q101 qualification and 150°C T_JMAX ensure functional safety compliance and lifetime stability in under-hood thermal environments.	Use Scenario: Bridge rectifier replacement in industrial 24 V/48 V AC-DC power supplies where space and thermal performance are constrained. IC Role / Device Role / Timing Role: Single-diode element in discrete bridge configuration; handles 8 A RMS input current with low thermal resistance. Use Value: 2 °C/W R_θJC allows direct mounting to aluminum chassis, eliminating need for additional thermal interface materials in cost-sensitive designs.

DC-DC Converter Output Rectification

Switching Mode Inverter Freewheeling

Use Scenario: Secondary-side rectification in isolated 48 V–12 V buck-derived DC-DC modules for telecom and server PSUs.

IC Role / Device Role / Timing Role: Unidirectional current valve conducting during transformer secondary positive half-cycle; handles 8 A DC output with minimal conduction loss.

Use Value: 1.0 V V_F at 8 A reduces power dissipation by ~0.8 W vs. standard FRD alternatives, lowering heatsink requirements.

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 current recirculation path during high-side switch off-time; clamps inductive kickback with fast t_rr.

Use Value: 50 ns t_rr limits reverse recovery charge (Q_rr) and associated switching loss, improving inverter efficiency at 50–200 kHz PWM frequencies.

Automotive On-Board Charger (OBC) Auxiliary Supply

Industrial AC-DC Front-End Rectification

Use Scenario: Input rectification stage in auxiliary 12 V supply derived from OBC's high-voltage DC bus (e.g., 400 V nominal).

IC Role / Device Role / Timing Role: High-reliability rectifier converting AC auxiliary winding output to DC; operates continuously at elevated ambient temperatures.

Use Value: AEC-Q101 qualification and 150°C T_JMAX ensure functional safety compliance and lifetime stability in under-hood thermal environments.

Use Scenario: Bridge rectifier replacement in industrial 24 V/48 V AC-DC power supplies where space and thermal performance are constrained.

IC Role / Device Role / Timing Role: Single-diode element in discrete bridge configuration; handles 8 A RMS input current with low thermal resistance.

Use Value: 2 °C/W R_θJC allows direct mounting to aluminum chassis, eliminating need for additional thermal interface materials in cost-sensitive designs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH8L06D (STMicroelectronics)	600 V V_RRM, 8 A I_F, 60 ns t_rr, TO-220AC, no AEC-Q101 grade	Higher voltage rating but slower recovery; suitable for universal-input PFC front-ends, not automotive-grade	Select when >100 V blocking is needed and AEC-Q101 is not required
VS-8EWH06FN-M3 (Vishay)	600 V V_RRM, 8 A I_F, 55 ns t_rr, TO-220AC, AEC-Q101 qualified	Same qualification level but higher V_RRM; larger junction capacitance (80 pF) increases EMI sensitivity	Prefer for 600 V systems requiring automotive qualification; avoid in noise-critical 100 V designs

Compared with STTH8L06D and VS-8EWH06FN-M3, the HERA802G offers optimal balance of 100 V rating, 50 ns t_rr, and AEC-Q101 availability-making it uniquely suited for compact, high-efficiency 12–48 V automotive and industrial DC-DC outputs where voltage margin and speed are tightly coupled.

Availability

HERA802G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and automotive on-board charger auxiliary supplies requiring stable component supply, consistent parametric performance, and traceable sourcing.

Supply support for HERA802G 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 semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in rectifiers, TVS diodes, MOSFETs, and IGBTs for industrial and automotive markets.

The HERA802G belongs to TSC's HERA ultrafast rectifier family, engineered specifically for high-efficiency, high-reliability switching power conversion in space-constrained and thermally demanding applications.

FAQ

What is the maximum junction temperature rating for the HERA802G?

The HERA802G has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings table. This allows continuous operation at elevated ambient conditions when paired with appropriate heatsinking. Derating curves in the official datasheet define allowable I_F versus case temperature, with full 8 A rated at T_C ≤ 75°C. Exceeding T_JMAX risks permanent degradation of the glass-passivated junction.

Is the HERA802G pin-compatible with other TO-220AC rectifiers?

Yes, the HERA802G uses the industry-standard TO-220AC outline with anode, cathode, and electrically connected metal tab-matching mechanical and solder footprint dimensions of all JEDEC TO-220AC rectifiers. However, electrical characteristics (V_RRM, t_rr, V_F) differ across vendors and families; always verify circuit-level compatibility before substitution. The HERA802G cathode is internally bonded to the tab.

Does the HERA802G meet automotive qualification standards?

The base HERA802G is not AEC-Q101 qualified; only the HERA802GH variant carries that certification. The "H" suffix denotes full AEC-Q101 stress testing including temperature cycling, humidity bias, and mechanical shock. For automotive applications requiring qualification evidence, specify HERA802GH-not HERA802G-to ensure compliance with ISO/TS 16949 production controls and failure rate requirements.

What is the reverse recovery time (t_rr) of the HERA802G and how is it measured?

The HERA802G has a typical reverse recovery time (t_rr) of 50 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_RR = 0.25 A per JEDEC standard test circuit. This ultrafast value reflects low stored charge and optimized carrier lifetime control. It directly impacts switching loss and EMI in high-frequency converters, making t_rr a critical parameter for selecting the HERA802G over standard recovery rectifiers.

How does the HERA802G's forward voltage compare to similar 100 V rectifiers?

The HERA802G specifies a maximum forward voltage (V_F) of 1.0 V at 8 A and 25°C, which is competitive with leading ultrafast rectifiers in the same voltage class. This low V_F results from optimized doping and junction design, reducing conduction loss by up to 15% versus legacy FRDs. At elevated temperatures (e.g., 125°C), V_F decreases slightly due to negative temperature coefficient-confirming stable performance across operating range.

HERA802G 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):: 100 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 @ 100 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

HERA802G C0G FAQ

1.How can I place an order for HERA802G C0G through Aetrix?

Please submit a Request for Quotation (RFQ) for HERA802G 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 HERA802G C0G reliable?

The price and inventory of HERA802G C0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HERA802G C0G is usually 5 days.

3.What payment methods are accepted for HERA802G C0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HERA802G C0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HERA802G C0G?

HERA802G C0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HERA802G 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 HERA802G C0G?

For technical support, including HERA802G C0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HERA802G C0G requirements.

6.How does Aetrix verify that HERA802G C0G is sourced from the original manufacturer or authorized distributors?

All HERA802G 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 HERA802G C0G meets industry standards.

7.What is the process for return or replacement of HERA802G C0G?

All HERA802G C0G units undergo pre-shipment inspection (PSI). If there is an issue with HERA802G 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 HERA802G C0G part is unused and in its original packaging.

Return procedure for HERA802G C0G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

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, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

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.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…