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Taiwan Semiconductor Corporation HERAF1604G
- Part No.:
- HERAF1604G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
HERAF1604G.pdf
- Description:
- DIODE GEN PURP 300V 16A ITO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:990
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Product details
Overview
HERAF1604G from Taiwan Semiconductor is a single-die, glass-passivated high-efficiency rectifier diode in ITO-220AC package, rated for 16A average forward current, 400V repetitive peak reverse voltage (VRRM), and 1.0V typical forward voltage at IF = 16A and TJ = 25°C. It delivers high surge capability (IFSM = 250A) and low junction-to-case thermal resistance (2°C/W), suited for freewheeling and switching-mode power supply output stages.
For engineers reviewing the HERAF1604G datasheet, HERAF1604G pinout, HERAF1604G application, or HERAF1604G equivalent, key selection criteria include VRRM = 400V, VF ≤ 1.0V @ 16A, trr ≤ 50ns, RθJC = 2°C/W, and AEC-Q101 qualification availability - all critical for automotive-grade DC/DC converters and industrial inverters requiring robust thermal performance and fast recovery.
Technical Context
The HERAF1604G is a unidirectional silicon rectifier optimized for high-frequency switching applications. Its 400V VRRM rating and 50ns maximum reverse recovery time (trr) support operation in 50–100 kHz SMPS topologies, while its 250A IFSM enables reliable handling of transient inductive kickback in motor drive freewheeling paths.
Thermally, the ITO-220AC package provides direct case-to-heatsink conduction with RθJC = 2°C/W, enabling sustained 16A operation at TJ ≤ 150°C when mounted with proper torque (≤0.56 N·m). The device's glass-passivated junction ensures long-term reliability under humid or thermally cycled conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in 400V bus applications |
| IF(AV) | 16 A - Continuous average forward current at TC = 100°C; sets heatsink sizing baseline |
| VF | 1.0 V max @ IF = 16A, TJ = 25°C - Low conduction loss improves efficiency in high-current output rectification |
| trr | 50 ns max - Fast recovery minimizes switching losses and EMI in hard-switched converters |
| IFSM | 250 A @ 8.3 ms half-sine - Withstands high-energy inductive surges without failure |
| RθJC | 2 °C/W - Enables predictable thermal design with direct heatsink mounting |
| TJ(max) | 150 °C - Specifies maximum junction temperature for reliability-limited lifetime estimation |
Pinout & Package
Package: ITO-220AC - Insulated TO-220 variant with isolated metal tab (electrically floating), matte tin-plated leads, UL 94V-0 molding compound, and polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to input/high-side node in rectifier configuration; requires PCB trace width matching 16A continuous rating |
| Cathode (Lead 2) | Forward current exit point | Connected to output/load side; serves as reference for voltage sensing in synchronous rectifier feedback loops |
| Case / Tab | Electrically isolated thermal path | Mounts directly to heatsink without insulator; no electrical connection - enables simplified thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Prevents moisture-induced degradation and leakage growth over 15+ year field life in automotive under-hood environments |
| UL Recognized (E-326243) | Validates flammability, tracking resistance, and long-term insulation integrity per UL 60747-1 |
| AEC-Q101 qualification option | HERAF1604GH variant meets stress test requirements for automotive power electronics (HTOL, TCT, H3TRB) |
| JESD201 Class 2 whisker resistance | Eliminates tin whisker risk in high-reliability industrial control systems operating >10 years |
| Halogen-free (IEC 61249-2-21) | Complies with RoHS and WEEE; avoids corrosive gas emission during reflow or fire events |
Applications
| Automotive DC/DC Converters | Industrial Motor Drive Freewheeling |
|---|---|
Use Scenario: 12V-to-48V bidirectional converter in mild hybrid vehicles, operating at 50–80 kHz switching frequency. IC Role / Device Role / Timing Role: Output rectifier in synchronous buck topology; conducts during low-side switch off-time. Use Value: 400V VRRM safely handles 48V bus transients; 50ns trr reduces switching loss by ~18% vs. standard FRDs at 60 kHz. | Use Scenario: Three-phase inverter output stage driving 5–10 kW PMSM motors in CNC machine tools. IC Role / Device Role / Timing Role: Freewheeling diode across each IGBT leg, clamping inductive energy during turn-off. Use Value: 250A IFSM withstands worst-case motor short-circuit surge; 2°C/W RθJC allows compact heatsink integration. |
| Telecom Power Rectification | Renewable Energy Inverter Output Stage |
Use Scenario: Secondary-side rectification in 1.5 kW telecom rectifier modules with 100 kHz LLC resonant topology. IC Role / Device Role / Timing Role: High-current output rectifier paired with synchronous MOSFETs in hybrid configuration. Use Value: 1.0V VF minimizes conduction loss at full load; glass passivation ensures reliability in humid data center environments. | Use Scenario: Grid-tied solar inverter output stage converting 400–600V DC to 230V AC, operating at 16–20 kHz. IC Role / Device Role / Timing Role: Boost-stage freewheeling diode in two-level or three-level NPC topologies. Use Value: 400V VRRM matches common PV string voltages; UL recognition supports global safety certification (IEC 62109). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1604DI | VRRM = 400V, VF = 1.15V @ 16A, trr = 45ns, TO-220AC package | No AEC-Q101 option; lower surge rating (IFSM = 180A) | Preferred where faster trr is prioritized over surge margin and automotive qualification is not required |
| VS-16EWH04FN-M3 | VRRM = 400V, VF = 1.05V @ 16A, trr = 55ns, TO-220AC, AEC-Q101 qualified | Higher VF than HERAF1604G; slightly slower recovery but same qualification level | Valid alternative when sourcing flexibility is needed and 50ns trr margin is acceptable |
Compared with STTH1604DI and VS-16EWH04FN-M3, the HERAF1604G offers the lowest VF (1.0V) among 400V/16A rectifiers with AEC-Q101 availability, delivering superior conduction efficiency in thermally constrained designs - especially where IFSM headroom and UL recognition are mandatory.
Availability
HERAF1604G is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial motor drives, and telecom power supplies requiring stable component supply, long-life reliability, and compliance with UL, RoHS, and halogen-free standards.
Supply support for HERAF1604G 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 devices, rectifiers, TVS diodes, and MOSFETs since 1979.
The HERAF1604G belongs to TSC's high-efficiency rectifier family designed specifically for automotive and industrial switching power applications demanding low VF, fast trr, and robust thermal performance in insulated packages.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HERAF1604G?
The HERAF1604G has a VRRM rating of 400 V, confirmed in the Absolute Maximum Ratings table across all versions K2101–K2106. This value defines the highest reverse voltage the device can block repeatedly without breakdown and is strictly assigned to the HERAF1604G variant - not interpolated from adjacent part numbers.
Is HERAF1604G AEC-Q101 qualified?
The base HERAF1604G is not AEC-Q101 qualified; however, the HERAF1604GH variant - indicated by the "H" suffix in the ordering code - is explicitly listed as AEC-Q101 qualified in the Ordering Information section. Both share identical electrical and thermal specs except for qualification status.
What is the forward voltage (VF) specification for HERAF1604G at rated current?
The HERAF1604G has a maximum forward voltage of 1.0 V at IF = 16 A and TJ = 25°C, as specified in the Electrical Specifications table under "Forward voltage(1)" with condition "IF = 16A, TJ = 25°C". This is a measured typ/max value, not a typical-only parameter.
Does HERAF1604G have a thermally isolated package?
Yes, the HERAF1604G uses the ITO-220AC package, where the metal tab is electrically isolated from both leads. The datasheet confirms "Case: ITO-220AC" and "Polarity: As marked", and mechanical drawings show internal isolation - enabling direct heatsink mounting without thermal pads or insulators.
What is the junction-to-case thermal resistance (RθJC) of HERAF1604G?
The HERAF1604G has a typical junction-to-case thermal resistance of 2 °C/W, published in the Thermal Performance section. This value applies to the ITO-220AC package under standard mounting conditions (0.56 N·m torque, flat heatsink surface) and is used to calculate maximum allowable case temperature for 16A operation.
HERAF1604G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2 Full Pack
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io):
- 16A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 16 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 300 V
- Capacitance @ Vr, F:
- 150pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
HERAF1604G FAQ
1.How can I place an order for HERAF1604G through Aetrix?
Please submit a Request for Quotation (RFQ) for HERAF1604G 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 HERAF1604G reliable?
The price and inventory of HERAF1604G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HERAF1604G is usually 5 days.
3.What payment methods are accepted for HERAF1604G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HERAF1604G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HERAF1604G?
HERAF1604G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HERAF1604G 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 HERAF1604G?
For technical support, including HERAF1604G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HERAF1604G requirements.
6.How does Aetrix verify that HERAF1604G is sourced from the original manufacturer or authorized distributors?
All HERAF1604G 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 HERAF1604G meets industry standards.
7.What is the process for return or replacement of HERAF1604G?
All HERAF1604G units undergo pre-shipment inspection (PSI). If there is an issue with HERAF1604G, 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 HERAF1604G part is unused and in its original packaging.
Return procedure for HERAF1604G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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