My Inquiry
My Account
Taiwan Semiconductor Corporation HER302G-K
- Part No.:
- HER302G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
HER302G-K.pdf
- Description:
- 50NS, 3A, 100V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:8,321
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HER302G-K from Taiwan Semiconductor is a high-efficiency, single-die, ultrafast recovery rectifier in DO-201AD package, rated for 3A average forward current, 100V repetitive peak reverse voltage (VRRM), and 125A surge current (IFSM). It delivers low forward voltage (VF ≤ 1.0 V at 3A, 25°C) and fast reverse recovery time (trr ≤ 50 ns), making it suitable for high-frequency switching power supplies.
For engineers reviewing the HER302G-K datasheet, HER302G-K pinout, HER302G-K application, or HER302G-K equivalent, key selection criteria include its 100V VRRM rating, 50 ns trr, DO-201AD mechanical compatibility, thermal resistance (RθJL = 10°C/W), and RoHS/halogen-free compliance for industrial DC-DC and SMPS designs.
Technical Context
The HER302G-K employs an epitaxial planar junction structure optimized for ultrafast recovery, enabling efficient operation in high-frequency switching converters where low switching loss and minimal reverse recovery charge are critical. Its 100V VRRM and 125A IFSM support robust transient handling in flyback and forward converter freewheeling paths.
Thermally, the device features RθJL = 10°C/W and RθJA = 35°C/W, allowing reliable 3A continuous conduction at case temperatures up to 100°C. The DO-201AD package with pure tin-plated leads ensures solderability per J-STD-002 and whisker resistance per JESD 201 Class 1A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum non-repetitive reverse voltage the device blocks reliably in circuit |
| IF(AV) | 3 A - Continuous average forward current capability under specified thermal conditions |
| IFSM | 125 A - Peak non-repetitive surge current the device withstands for 8.3 ms half-sine |
| VF | ≤1.0 V @ 3A, 25°C - Low conduction loss enabling higher efficiency in high-current paths |
| trr | ≤50 ns - Ultrafast recovery minimizes switching losses and EMI in >100 kHz SMPS |
| RθJL | 10 °C/W - Enables effective heat transfer from junction to lead for PCB-mounted thermal design |
| Junction Temp | −55°C to +150°C - Supports operation in extended industrial ambient environments |
Pinout & Package
HER302G-K is housed in the standard DO-201AD axial-leaded package with cathode indicated by a band. Leads are pure tin-plated and compliant with J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of rectification path (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail or filter capacitor positive; blocks reverse voltage up to 100 V |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery (trr ≤ 50 ns) | Reduces switching losses and improves efficiency in high-frequency (>100 kHz) DC-DC converters |
| Low VF (≤1.0 V @ 3A) | Lowers conduction loss and thermal stress in 3A continuous rectification paths |
| High IFSM (125 A) | Withstands inrush and fault currents without failure in SMPS startup and overload conditions |
| DO-201AD with tin plating | Ensures reliable solder joint formation and long-term intermetallic stability per J-STD-002 |
| RoHS & halogen-free | Meets IEC 61249-2-21 and environmental compliance requirements for industrial end equipment |
Applications
| DC–DC Converter Output Rectification | Switch-Mode Power Supply Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12 V/3 A buck-derived DC–DC modules for telecom and industrial control. IC Role / Device Role / Timing Role: High-efficiency unidirectional current valve converting transformer AC to regulated DC output. Use Value: 1.0 V VF and 50 ns trr reduce power loss and thermal rise, enabling compact heatsinkless designs. | Use Scenario: Freewheeling path in 48 V input forward converter supplying 5 V/3 A to embedded controllers. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during MOSFET off-time to maintain energy continuity. Use Value: 125 A IFSM handles peak inductor current surges; DO-201AD mounting supports high-current PCB traces. |
| AC–DC Adapter Secondary Rectifier | UPS Inverter Output Stage |
Use Scenario: Output rectification in 19 V/3 A laptop adapter using quasi-resonant flyback topology. IC Role / Device Role / Timing Role: Converts high-frequency transformer output to stable DC, operating at ~65 kHz switching frequency. Use Value: 50 ns trr limits reverse recovery ringing and EMI, easing EMC filter design. | Use Scenario: Bidirectional freewheeling diode in H-bridge inverter stage of 1 kVA line-interactive UPS. IC Role / Device Role / Timing Role: Clamps inductive kickback and enables zero-voltage switching transitions in IGBT gate drive circuits. Use Value: 100 V VRRM and −55°C to +150°C TJ range ensure reliability across wide input voltage and temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | 600 V VRRM, 3 A IF, VF = 1.15 V @ 3 A, trr = 35 ns, TO-220AC package | Higher voltage rating but larger footprint and higher VF; suited for 400 V bus systems | Select when >100 V reverse blocking is required and TO-220 thermal mass is acceptable |
| ES3B | 100 V VRRM, 3 A IF, VF = 0.95 V @ 3 A, trr = 35 ns, DO-204AL (SMA) package | Same VRRM and IF, lower VF and faster trr, but smaller package limits thermal dissipation | Prefer for space-constrained layouts where 3 A derating to ~2.2 A at 75°C is acceptable |
Compared with STTH3L06S and ES3B, the HER302G-K offers optimal balance of 100 V rating, DO-201AD mountability, 1.0 V VF, and 50 ns trr-making it ideal for cost-sensitive, thermally managed 3 A SMPS outputs where 100 V blocking suffices.
Availability
HER302G-K is available at Aetrix Electronics and suitable for DC–DC converters, switching mode power supplies, and freewheeling applications requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.
Supply support for HER302G-K 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and computing markets.
The HER30xG-K series was designed specifically for high-efficiency, high-reliability rectification in switching power supplies-emphasizing ultrafast recovery, low VF, and robust surge capability in standardized axial packages.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HER302G-K?
The HER302G-K has a VRRM rating of 100 V, meaning it reliably blocks up to 100 V of reverse voltage in repetitive operation. This value is fixed per the HER302G-K designation in the HER301G-K to HER308G-K family and is verified in the absolute maximum ratings table of the official TSC datasheet (Version C2105).
What is the forward voltage drop (VF) of HER302G-K at rated current?
The HER302G-K exhibits a maximum forward voltage of 1.0 V at 3 A forward current and 25°C junction temperature, as specified in the electrical characteristics table. This low VF contributes directly to reduced conduction losses in high-current rectification paths where HER302G-K is deployed.
Is HER302G-K compatible with lead-free reflow soldering processes?
Yes, HER302G-K features pure tin-plated leads qualified per J-STD-002 for solderability, and its DO-201AD package is rated for lead-free reflow profiles. The molding compound meets UL 94V-0 flammability, and the device is RoHS and halogen-free compliant per IEC 61249-2-21-ensuring compatibility with modern assembly standards.
What is the reverse recovery time (trr) specification for HER302G-K?
The HER302G-K has a maximum reverse recovery time of 50 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This ultrafast trr is confirmed in the electrical specifications table and enables efficient operation in high-frequency switching applications such as 100–500 kHz DC–DC converters where HER302G-K is commonly used.
Does HER302G-K have a defined junction-to-ambient thermal resistance (RθJA)?
Yes, the HER302G-K has a typical RθJA of 35°C/W, measured under standard JEDEC test conditions (single device on 1-inch² FR-4 board with 2 oz copper). This value-listed in the Thermal Performance section-guides thermal design when using HER302G-K in natural convection or limited airflow environments.
HER302G-K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 100 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER302G-K FAQ
1.How can I place an order for HER302G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for HER302G-K 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 HER302G-K reliable?
The price and inventory of HER302G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER302G-K is usually 5 days.
3.What payment methods are accepted for HER302G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER302G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER302G-K?
HER302G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER302G-K 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 HER302G-K?
For technical support, including HER302G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER302G-K requirements.
6.How does Aetrix verify that HER302G-K is sourced from the original manufacturer or authorized distributors?
All HER302G-K 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 HER302G-K meets industry standards.
7.What is the process for return or replacement of HER302G-K?
All HER302G-K units undergo pre-shipment inspection (PSI). If there is an issue with HER302G-K, 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 HER302G-K part is unused and in its original packaging.
Return procedure for HER302G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HER302G-K 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…
