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 HER202G A0G

Name: HER202G A0G
Brand: Taiwan Semiconductor Corporation
SKU: HER202G A0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: HER202G A0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: HER202G A0G.pdf

Description:: DIODE GEN PURP 100V 2A DO204AC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:9,574

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

Product details

Overview

HER202G A0G from Taiwan Semiconductor is a 2A, 100V high-efficiency ultrafast recovery rectifier diode in DO-204AC (DO-15) package, featuring 1.0V max forward voltage at 2A, 60A surge capability, and 50ns reverse recovery time - deployed in DC/DC converters and switching-mode power supplies.

For engineers reviewing the HER202G A0G datasheet, HER202G A0G pinout, HER202G A0G application, or HER202G A0G equivalent, key selection factors include V_RRM = 100V, I_F = 2A, t_rr = 50ns, low thermal resistance (R_θJA = 60°C/W), and DO-15 mechanical compatibility with automated through-hole assembly.

Technical Context

This single-die, glass-passivated silicon rectifier operates with ultrafast recovery (t_rr ≤ 50ns) and low conduction loss (V_F ≤ 1.0V @ 2A, 25°C), enabling high-frequency switching efficiency in SMPS topologies. Its junction-to-ambient thermal resistance of 60°C/W supports sustained 2A operation under natural convection.

The device uses pure tin-plated leads compliant with J-STD-002 solderability and meets JESD201 Class 2 whisker resistance. Polarity is marked by a cathode band, and the molding compound satisfies UL 94V-0 flammability rating.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse voltage; defines safe blocking range in 100V-rated DC bus or flyback clamp circuits.
I_F	2 A - Continuous average forward current; supports output rectification in 20–30W isolated converters.
t_rr	50 ns - Ultrafast reverse recovery; minimizes switching loss and EMI in 100–500 kHz SMPS designs.
V_F	≤ 1.0 V @ 2A, 25°C - Low forward drop reduces conduction loss and improves system efficiency vs. standard FR/UF diodes.
I_FSM	60 A - Non-repetitive surge rating; withstands inrush and transient overloads without failure.
R_θJA	60 °C/W - Thermal resistance enables 2A operation up to +75°C ambient without heatsinking.
C_J	35 pF @ 1 MHz, 4V - Junction capacitance impacts high-frequency switching node ringing and snubber design.

Pinout & Package

Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with cathode band marking. Leads are pure tin-plated and solderable per J-STD-002.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unmarked end)	Forward current entry point	Connects to lower-potential side (e.g., transformer secondary center-tap or switch node return).
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connects to output rail or positive bus; polarity marking prevents reverse installation in PCB layout.

Key Features

Feature	Design Value
Glass-passivated junction	Enhances long-term reliability and moisture resistance in humid or thermally cycled environments.
Ultrafast t_rr = 50 ns	Reduces switching losses and associated EMI in high-frequency converters (>200 kHz).
Low V_F ≤ 1.0 V @ 2A	Lowers conduction loss by ~15–20% versus standard fast recovery diodes with similar ratings.
RoHS & halogen-free	Complies with IEC 61249-2-21 and environmental regulations for industrial and automotive-qualified variants.
DO-15 mechanical standardization	Enables drop-in replacement and compatibility with legacy through-hole tooling and inspection systems.

Applications

DC/DC Converter Rectification	Switching Mode Inverter Output
Use Scenario: Secondary-side rectification in isolated 12V/24V output DC/DC converters operating at 200–300 kHz. IC Role / Device Role / Timing Role: High-efficiency unidirectional current path; replaces slower FR107/UF4007 where t_rr reduction is critical. Use Value: 50ns t_rr cuts switching loss by ~30% vs. 100ns diodes, improving full-load efficiency by 0.8–1.2%.	Use Scenario: Output freewheeling and anti-parallel clamping in single-phase H-bridge inverters for motor drives. IC Role / Device Role / Timing Role: Bidirectional energy recirculation path during PWM dead-time; handles 2A continuous and 60A surge currents. Use Value: Low V_F and robust I_FSM prevent thermal runaway during regenerative braking events.
Freewheeling Diode	EMI-Sensitive Power Supply
Use Scenario: Inductive load flyback suppression in solenoid drivers and relay interface circuits. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when inductive current is interrupted. Use Value: 50ns t_rr limits voltage overshoot spike amplitude, reducing need for TVS clamping components.	Use Scenario: Output rectification in medical-grade or audio PSUs requiring low EMI and minimal high-frequency ringing. IC Role / Device Role / Timing Role: Low-junction-capacitance (35 pF) rectifier minimizing RF noise coupling into sensitive analog stages. Use Value: Reduced C_J and fast t_rr suppress switching node oscillation, easing EMI filter design.

DC/DC Converter Rectification

Switching Mode Inverter Output

Use Scenario: Secondary-side rectification in isolated 12V/24V output DC/DC converters operating at 200–300 kHz.

IC Role / Device Role / Timing Role: High-efficiency unidirectional current path; replaces slower FR107/UF4007 where t_rr reduction is critical.

Use Value: 50ns t_rr cuts switching loss by ~30% vs. 100ns diodes, improving full-load efficiency by 0.8–1.2%.

Use Scenario: Output freewheeling and anti-parallel clamping in single-phase H-bridge inverters for motor drives.

IC Role / Device Role / Timing Role: Bidirectional energy recirculation path during PWM dead-time; handles 2A continuous and 60A surge currents.

Use Value: Low V_F and robust I_FSM prevent thermal runaway during regenerative braking events.

Freewheeling Diode

EMI-Sensitive Power Supply

Use Scenario: Inductive load flyback suppression in solenoid drivers and relay interface circuits.

IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when inductive current is interrupted.

Use Value: 50ns t_rr limits voltage overshoot spike amplitude, reducing need for TVS clamping components.

Use Scenario: Output rectification in medical-grade or audio PSUs requiring low EMI and minimal high-frequency ringing.

IC Role / Device Role / Timing Role: Low-junction-capacitance (35 pF) rectifier minimizing RF noise coupling into sensitive analog stages.

Use Value: Reduced C_J and fast t_rr suppress switching node oscillation, easing EMI filter design.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R01	V_RRM = 100V, t_rr = 45ns, V_F = 1.05V @ 2A - slightly faster but higher V_F; R_θJA = 65°C/W.	Marginally better t_rr but higher conduction loss; less thermally efficient at high ambient.	Prefer HER202G A0G where thermal headroom or cost sensitivity is critical.
ON Semi MUR220	V_RRM = 200V, t_rr = 50ns, V_F = 0.97V @ 2A - higher voltage rating, marginally lower V_F, same t_rr.	Over-specified V_RRM may increase leakage (I_R = 10µA vs. 5µA) and cost; suitable only if 200V derating is required.	HER202G A0G offers optimal V_RRM/cost balance for 100V systems with tighter leakage constraints.

Compared with STTH2R01 and MUR220, HER202G A0G delivers best-in-class thermal performance (R_θJA = 60°C/W), lowest specified I_R (5µA @ 25°C), and precise 100V V_RRM alignment - making it ideal for space-constrained, efficiency-critical 100V-output SMPS.

Availability

HER202G A0G is available at Aetrix Electronics and suitable for DC/DC converter rectification, switching mode inverter output stages, and freewheeling applications requiring stable component supply, consistent DO-15 form factor, and AEC-Q101-qualified alternatives.

Supply support for HER202G A0G 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS, MOSFETs, and IGBTs, with global distribution and AEC-Q101 qualification capabilities.

The HER20xG series is engineered for high-efficiency, high-reliability power conversion in automotive, industrial, and computing applications - emphasizing ultrafast recovery, low V_F, and robust surge handling in standardized DO-15 packaging.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for HER202G A0G?

The HER202G A0G has a V_RRM rating of 100 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version G2105). This value is fixed for the HER202G variant and is not adjustable or programmable. The HER202G A0G must not be subjected to reverse voltages exceeding this limit in continuous operation.

Is HER202G A0G RoHS and halogen-free compliant?

Yes, HER202G A0G is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. The device uses green compound molding and pure tin-plated leads, meeting both environmental and solderability standards without requiring exemptions.

What is the reverse recovery time (t_rr) of HER202G A0G, and under what test conditions?

The HER202G A0G has a maximum reverse recovery time of 50 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, per the Electrical Specifications table. This t_rr applies to HER201G–HER205G variants and is verified at T_A = 25°C with specified pulse parameters.

Does HER202G A0G have AEC-Q101 qualification?

The base HER202G A0G variant is not AEC-Q101 qualified; only the "H" suffix versions (e.g., HER202GH) are explicitly listed as AEC-Q101 qualified in the Ordering Information table. HER202G A0G shares the same die and construction but lacks the extended stress testing required for automotive qualification.

What packaging format does HER202G A0G ship in?

HER202G A0G ships in an ammo box format containing 1,500 units, as defined in the Ordering Information table. This differs from the tape-and-reel version (HER202G), which contains 3,500 units. The DO-204AC (DO-15) package remains identical across both formats, with no dimensional or electrical differences.

HER202G A0G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-204AC, DO-15, Axial

Packaging:: Tape & Box (TB)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 2 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 100 V

Capacitance @ Vr, F:: 35pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AC (DO-15)

Operating Temperature - Junction:: -55°C ~ 150°C

HER202G A0G FAQ

1.How can I place an order for HER202G A0G through Aetrix?

Please submit a Request for Quotation (RFQ) for HER202G A0G 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 HER202G A0G reliable?

The price and inventory of HER202G A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER202G A0G is usually 5 days.

3.What payment methods are accepted for HER202G A0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER202G A0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HER202G A0G?

HER202G A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HER202G A0G 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 HER202G A0G?

For technical support, including HER202G A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER202G A0G requirements.

6.How does Aetrix verify that HER202G A0G is sourced from the original manufacturer or authorized distributors?

All HER202G A0G 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 HER202G A0G meets industry standards.

7.What is the process for return or replacement of HER202G A0G?

All HER202G A0G units undergo pre-shipment inspection (PSI). If there is an issue with HER202G A0G, 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 HER202G A0G part is unused and in its original packaging.

Return procedure for HER202G A0G:

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…