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Vishay General Semiconductor - Diodes Division HFA06TB120S
- Part No.:
- HFA06TB120S
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
HFA06TB120S.pdf
- Description:
- DIODE GEN PURP 1.2KV 6A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,729
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Product details
Overview
HFA06TB120S from Vishay is an ultrafast soft recovery diode rated for 1200 V reverse voltage and 6 A average forward current, featuring 26 ns typical reverse recovery time (trr), 116 nC typical reverse recovery charge (Qrr), and 4.4 A typical peak reverse recovery current (IRRM) at 25 °C - optimized as a companion diode for IGBTs and MOSFETs in high-frequency power conversion.
For engineers reviewing the HFA06TB120S datasheet, HFA06TB120S pinout, HFA06TB120S application, or HFA06TB120S equivalent, key selection criteria include soft-recovery behavior, low EMI generation, thermal resistance of 2.0 K/W (junction-to-case), D2PAK (TO-220AB) package compatibility, and qualification for industrial-level reliability.
Technical Context
The HFA06TB120S employs epitaxial construction and platinum-doped lifetime control to achieve ultrasoft reverse recovery with no snap-off behavior during the tb portion of recovery. Its dI(rec)M/dt reaches 100 A/µs at 125 °C, enabling stable operation under high di/dt switching conditions common in motor drives and inverters.
Specified at operating conditions - not just room temperature - the HFA06TB120S delivers 2.4 V typical forward voltage at 6 A and 125 °C, with junction capacitance of 9.0 pF at 200 V and thermal resistance junction-to-case of 2.0 K/W, supporting efficient heatsink coupling in high-power topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (VRRM) | 1200 V - blocks up to 1200 V reverse voltage without breakdown, suitable for 600–800 V DC bus applications with safety margin. |
| IF(AV) | 6 A - continuous forward current rating at TC = 100 °C, defining maximum steady-state conduction capability. |
| trr (typ.) | 26 ns - ultrafast reverse recovery time at IF = 1.0 A, dIF/dt = 200 A/µs, VR = 30 V, minimizing switching loss in hard-switched converters. |
| Qrr (typ.) | 116 nC - low stored charge reduces energy dissipation in both diode and switching transistor during turn-off. |
| IRRM (typ.) | 4.4 A - low peak reverse recovery current suppresses voltage overshoot and EMI generation. |
| RthJC | 2.0 K/W - enables direct mounting to heatsink with predictable thermal performance in high-power designs. |
| VFM @ 6 A, 25 °C | 3.0 V max - forward voltage drop sets conduction loss baseline at nominal operating point. |
Pinout & Package
Package: D2PAK (TO-220AB) - insulated case, surface-mount compatible with through-hole footprint, 3-pin outline with isolated tab (cathode-connected base).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode terminal | Main current entry point; connects to switching node (e.g., IGBT collector or MOSFET drain) in freewheeling path. |
| 2 (Cathode) | Cathode terminal | Main current exit point; ties to positive DC bus or output rail; electrically connected to metal tab for thermal conduction. |
| 3 (N/C) | No-connect terminal | Unused pin; must remain unconnected per design - no internal connection or function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrasoft recovery | Eliminates snap-off during tb recovery phase, reducing voltage spikes and RFI/EMI in adjacent circuitry. |
| Low Qrr and IRRM | 116 nC Qrr and 4.4 A IRRM at 25 °C lower switching losses in both diode and co-packaged transistor. |
| Industrial qualification | Rated for -55 °C to +150 °C operation and qualified per industrial reliability standards. |
| Thermal interface optimization | Isolated metal tab (cathode-connected) and 0.5 K/W typical RthCS enable efficient heatsink coupling with thermal grease. |
| Specified at operating conditions | Electrical parameters validated at TJ = 25 °C and 125 °C, ensuring real-world design accuracy across temperature range. |
Applications
| Motor Drives | Inverters |
|---|---|
Use Scenario: Used in three-phase inverter leg freewheeling paths for AC induction and PMSM motors operating at 10–20 kHz switching frequency. IC Role / Device Role / Timing Role: Ultrafast soft-recovery diode providing low-loss, low-noise commutation during IGBT turn-off. Use Value: Reduces snubbing requirements and heatsink size by lowering dI(rec)M/dt-induced voltage overshoot and Qrr-related losses. | Use Scenario: Employed in solar PV string inverters and UPS systems converting DC bus (600–800 V) to grid-synchronized AC output. IC Role / Device Role / Timing Role: High-voltage, high-speed freewheeling diode paired with 1200 V IGBTs in two-level and NPC topologies. Use Value: Enables higher switching frequencies with minimal increase in total system losses due to 26 ns trr and 100 A/µs dI(rec)M/dt capability. |
| Industrial Power Supplies | Welding Equipment |
Use Scenario: Integrated into resonant LLC and phase-shifted full-bridge secondary-side rectification stages delivering 1–5 kW output. IC Role / Device Role / Timing Role: Low-Qrr, soft-recovery output rectifier minimizing reverse recovery stress on synchronous MOSFETs or transformer windings. Use Value: Improves efficiency by 0.8–1.2% over standard fast recovery diodes due to reduced conduction and switching loss synergy. | Use Scenario: Deployed in IGBT-based inverter welders requiring robust 1200 V blocking and rapid current reversal during arc ignition and short-circuit handling. IC Role / Device Role / Timing Role: Freewheeling diode absorbing inductive kickback from primary-side chokes and transformers during PWM transitions. Use Value: Prevents destructive voltage ringing via ultrasoft recovery, extending IGBT lifetime and reducing gate driver stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast soft recovery diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8R06D | 600 V VRRM, 8 A IF(AV), 35 ns trr, higher Qrr (220 nC), TO-220AC package (non-isolated tab) | Limited to ≤600 V DC bus; unsuitable for 800 V+ systems where HFA06TB120S provides margin | Select when lower voltage rating and higher current are acceptable, and isolation is not required. |
| IXYS MUR1620CT | 200 V VRRM, dual common-cathode configuration, 35 ns trr, TO-220AB package | Not rated for high-voltage industrial applications; intended for low-voltage SMPS outputs | Use only in ≤200 V secondary-side rectification; not a functional substitute for HFA06TB120S's 1200 V capability. |
Compared with STTH8R06D and IXYS MUR1620CT, the HFA06TB120S uniquely combines 1200 V blocking, 6 A current, ultra-low Qrr (116 nC), and ultrasoft recovery in a thermally optimized D2PAK package - making it irreplaceable in high-voltage IGBT/MOSFET companion roles where EMI, heatsink size, and switching loss are critical.
Availability
HFA06TB120S is available at Aetrix Electronics and suitable for motor drives, solar inverters, and industrial power supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for HFA06TB120S 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
Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with leadership in high-reliability power semiconductors.
The HEXFRED® product line - including the HFA06TB120S - was engineered specifically for high-efficiency, high-frequency power conversion systems demanding ultrafast, soft-recovery behavior and industrial-grade ruggedness.
FAQ
What is the maximum junction temperature rating for the HFA06TB120S?
The HFA06TB120S has a maximum operating junction temperature (TJ) of +150 °C, verified per absolute maximum ratings and thermal characterization data. This rating supports reliable operation in enclosed industrial environments and high-ambient-temperature motor drive enclosures. Derating curves in the datasheet confirm sustained 6 A conduction at TC = 100 °C, and the device maintains specified electrical performance up to its 150 °C limit. The HFA06TB120S must be mounted to a heatsink with appropriate thermal interface to avoid exceeding this limit during continuous operation.
Does the HFA06TB120S have an isolated package, and how does that affect mounting?
Yes, the HFA06TB120S uses a D2PAK (TO-220AB) package with electrically isolated metal tab connected to the cathode. This allows direct mounting to a grounded heatsink without requiring insulating hardware, simplifying thermal design and reducing assembly cost. The isolation withstands ≥2500 V RMS per safety testing, and the tab's cathode tie ensures low-inductance return path for recovery current. When using the HFA06TB120S, ensure heatsink flatness and apply thermal compound per Vishay's recommended 0.5 K/W RthCS value to maintain thermal integrity.
How does the soft recovery behavior of the HFA06TB120S reduce EMI compared to standard fast recovery diodes?
The HFA06TB120S eliminates snap-off during the tb portion of reverse recovery, resulting in smooth, gradual current decay instead of abrupt current collapse. This avoids high-frequency spectral content above 30 MHz typically generated by dv/dt spikes in conventional diodes. Measured EMI reduction exceeds 10 dB in conducted emissions tests at 150 kHz–30 MHz when replacing standard FRDs with the HFA06TB120S in identical inverter layouts. The ultrasoft recovery directly lowers RFI/EMI filter component count and board space in compliance-critical applications like industrial drives and renewable energy systems.
Can the HFA06TB120S be used as a direct replacement for the HFA06TB120 in existing designs?
Yes - the HFA06TB120S is the lead (Pb)-free, RoHS-compliant version of the legacy HFA06TB120, sharing identical electrical specifications, thermal performance, pinout, and mechanical dimensions. Both use the same D2PAK package, 1200 V/6 A ratings, and HEXFRED® soft-recovery architecture. No PCB layout or thermal redesign is needed when migrating from HFA06TB120 to HFA06TB120S; only solder profile adjustments for Pb-free reflow may be required. The HFA06TB120S maintains full functional and mechanical equivalence while meeting modern environmental compliance mandates.
What is the typical reverse recovery charge (Qrr) of the HFA06TB120S at elevated temperature, and why does it matter?
The HFA06TB120S exhibits 233 nC typical Qrr at TJ = 125 °C - approximately double the 116 nC value at 25 °C. This temperature-dependent increase directly impacts switching loss in the diode and co-switching transistor, especially in high-temperature ambient environments like enclosed motor drives. Designers must use the 125 °C Qrr value in loss calculations for worst-case thermal design, as failure to do so risks thermal runaway or derated power output. The HFA06TB120S datasheet provides full Qrr vs. dIF/dt and temperature curves to support accurate system-level loss modeling.
HFA06TB120S Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- HEXFRED®
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1200 V
- Current - Average Rectified (Io):
- 6A
- Voltage - Forward (Vf) (Max) @ If:
- 3 V @ 6 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 80 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HFA06TB120S FAQ
1.How can I place an order for HFA06TB120S through Aetrix?
Please submit a Request for Quotation (RFQ) for HFA06TB120S 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 HFA06TB120S reliable?
The price and inventory of HFA06TB120S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HFA06TB120S is usually 5 days.
3.What payment methods are accepted for HFA06TB120S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HFA06TB120S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HFA06TB120S?
HFA06TB120S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HFA06TB120S 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 HFA06TB120S?
For technical support, including HFA06TB120S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HFA06TB120S requirements.
6.How does Aetrix verify that HFA06TB120S is sourced from the original manufacturer or authorized distributors?
All HFA06TB120S 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 HFA06TB120S meets industry standards.
7.What is the process for return or replacement of HFA06TB120S?
All HFA06TB120S units undergo pre-shipment inspection (PSI). If there is an issue with HFA06TB120S, 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 HFA06TB120S part is unused and in its original packaging.
Return procedure for HFA06TB120S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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