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HomeProductsDiscrete Semiconductor ProductsDiodes - Rectifiers - SingleVS-HFA16TB120SPBF
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VS-HFA16TB120SPBF - Vishay General Semiconductor - Diodes Division

Manufacturer Part Number
VS-HFA16TB120SPBF
Manufacturer
Vishay General Semiconductor – Diodes Division
Allelco Part Number
98D-VS-HFA16TB120SPBF
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
4,836 pcs available, New & Original
Parts Description
DIODE GEN PURP 1.2KV 16A TO263AB
Package
TO-263AB (D²PAK)
Data sheet
VS-HFA16TB120SP.pdf

Other Related Documents

Packaging Information.pdf
RoHs Status
ROHS3 Compliant
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Specifications

VS-HFA16TB120SPBF Tech Specifications
Vishay General Semiconductor - Diodes Division - VS-HFA16TB120SPBF technical specifications, attributes, parameters and parts with similar specifications to Vishay General Semiconductor - Diodes Division - VS-HFA16TB120SPBF

Product Attribute Attribute Value
Manufacturer Vishay General Semiconductor – Diodes Division
Voltage - Forward (Vf) (Max) @ If 3 V @ 16 A
Voltage - DC Reverse (Vr) (Max) 1200 V
Technology Standard
Supplier Device Package TO-263AB (D²PAK)
Speed Fast Recovery =< 500ns, > 200mA (Io)
Series HEXFRED®
Reverse Recovery Time (trr) 135 ns
Product Attribute Attribute Value
Package / Case TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Package Tube
Operating Temperature - Junction -55°C ~ 150°C
Mounting Type Surface Mount
Current - Reverse Leakage @ Vr 20 µA @ 1200 V
Current - Average Rectified (Io) 16A
Capacitance @ Vr, F -
Base Product Number HFA16

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99

Frequently Asked Questions(FAQ)

How does the VS-HFA16TB120SPBF compare to other diodes in terms of reverse recovery time and junction temperature range for high-voltage switching applications?
The VS-HFA16TB120SPBF features a reverse recovery time (trr) of 135 ns, which is suitable for medium-frequency switching applications where faster diodes like those with trr < 50 ns might be preferred, but significantly better than slow rectifiers exceeding 500 ns. Its junction operating temperature range spans from -55°C to 150°C, enabling reliable performance in extreme environments such as industrial motor drives or solar inverter systems. This combination allows it to handle high voltage (1.2 kV) and current (16 A) while maintaining thermal stability under sustained load, making it a balanced choice for applications requiring both ruggedness and moderate switching speed.
What are the key trade-offs when selecting the VS-HFA16TB120SPBF over alternative TO-263AB packaged diodes with similar voltage ratings?
While the VS-HFA16TB120SPBF offers robust performance in terms of reverse leakage current (20 µA at 1.2 kV) and forward voltage drop (3 V at 16 A), designers must consider that faster-switching alternatives may exhibit slightly higher conduction losses due to elevated Vf. Compared to ultra-fast silicon carbide (SiC) Schottky diodes, this device trades superior surge handling and thermal cycling capability for lower cost and simpler drive requirements. The HEXFRED® technology provides a middle ground between standard fast recovery and soft-recovery diodes, reducing electromagnetic interference without excessive power loss—ideal when balancing efficiency, EMI, and system complexity.
Can the VS-HFA16TB120SPBF safely operate in continuous conduction mode within a 1200 V DC bus application drawing 14 A average current?
Yes, the VS-HFA16TB120SPBF can support continuous operation at 14 A average current, as its rated Io is 16 A. However, derating is recommended for long-term reliability—typically 80–90% of max current under continuous use. With an estimated junction-to-case thermal resistance of approximately 1.5°C/W for the TO-263AB package, a heatsink may be necessary if ambient temperatures exceed 50°C or power dissipation surpasses 20 W. Proper PCB layout with thermal vias enhances heat spreading, allowing safe operation near rated limits without risking thermal runaway.
Why would a designer choose the VS-HFA16TB120SPBF instead of a dedicated soft-recovery diode for a resonant converter topology?
In resonant converters such as LLC or ZVS buck-boost stages, minimizing ringing and EMI is critical. Soft-recovery diodes typically have longer recovery times but softer transitions. The VS-HFA16TB120SPBF, however, uses HEXFRED® technology optimized for hard-switching environments like PWM inverters or motor drives, offering a compromise: reduced trr compared to standard rectifiers yet not as soft as true soft-recovery types. If switching frequencies are above 50 kHz and EMI margins are tight, a soft-recovery variant might be preferable; otherwise, the VS-HFA16TB120SPBF delivers sufficient performance with better thermal handling and cost efficiency.
How does the moisture sensitivity level (MSL 1) of the VS-HFA16TB120SPBF influence assembly process planning in high-volume manufacturing?
With an MSL rating of 1, the VS-HFA16TB120SPBF can withstand unlimited floor life before reflow soldering, provided storage conditions meet JEDEC J-STD-033 standards (e.g., dry packaging, controlled humidity). This simplifies inventory management and reduces bake cycles during rework—beneficial for just-in-time production lines. Unlike components rated MSL 2 or higher, there’s no mandatory baking requirement prior to assembly, lowering operational overhead and risk of moisture-induced defects such as popcorning, especially important in automotive or aerospace supply chains requiring strict compliance.
What impact does the forward voltage drop of 3 V at 16 A have on overall system efficiency in a bridge rectifier configuration using the VS-HFA16TB120SPBF?
At full load, each VS-HFA16TB120SPBF dissipates approximately P = Vf × I = 3 V × 16 A = 48 W per unit in conduction. In a full-bridge setup with four diodes, total conduction loss reaches ~192 W under identical conditions. This represents a significant portion of total system loss, particularly in low-output-power designs. To mitigate this, synchronous rectification using MOSFETs becomes attractive below certain power thresholds. However, at higher currents (>5 A), the diode solution remains more efficient due to lower Rds(on)-related losses, justifying use of the VS-HFA16TB120SPBF where simplicity and ruggedness outweigh marginal efficiency gains.
Are there any known compatibility issues between the VS-HFA16TB120SPBF and common gate drivers or snubber circuits in high-side switching configurations?
No inherent driver incompatibility exists since the VS-HFA16TB120SPBF is unipolar and only requires standard anode-cathode biasing. However, during turn-off transients, the 135 ns reverse recovery can induce voltage spikes if parasitic inductance is high. Standard RC snubbers or TVS diodes across the switch node help suppress overshoot, but care must be taken to avoid over-damping, which increases switching loss. The device’s moderate trr makes it less sensitive to aggressive dead-time control compared to very fast diodes, simplifying timing optimization in half-bridge topologies.
How does the VS-HFA16TB120SPBF perform relative to the STTH1512G substitute in terms of leakage current and thermal stability under pulsed load conditions?
Both the VS-HFA16TB120SPBF and STTH1512G share similar voltage (1.2 kV) and current (15–16 A) ratings, but the former specifies a maximum reverse leakage of 20 µA at 1.2 kV, whereas the STTH1512G typically exhibits lower leakage (~10 µA). This gives the STTH1512G an edge in high-impedance or battery-backup applications. However, the VS-HFA16TB120SPBF benefits from Vishay’s HEXFRED® process, providing better avalanche energy tolerance and more consistent thermal performance across pulse widths, making it preferable in rugged industrial settings despite marginally higher leakage.
Is the VS-HFA16TB120SPBF suitable for use in photovoltaic string inverters where partial shading may cause reverse-bias stress?
Yes, the VS-HFA16TB120SPBF includes built-in avalanche ruggedness typical of HEXFRED® devices, allowing it to survive transient reverse voltages up to twice Vr without degradation. In PV inverters, strings may experience reverse polarity during mismatch events, and the component’s 1.2 kV rating comfortably exceeds most grid-tie requirements. Combined with its low leakage current, it ensures minimal standby power draw and reliable blocking under fault conditions, supporting compliance with UL 1741 and IEC 62109 safety standards.
What considerations apply when substituting the VS-HFA16TB120SPBF with the VS-HFA16TB120S-M3 in existing PCB layouts?
Although both are Vishay variants of the same base product (HFA16), the SPBF version is RoHS3 compliant and carries an extended certification profile, while the S-M3 may differ in marking or lead finish. Electrically, they are nearly identical, but layout parasitics could affect performance slightly due to minor differences in internal metallization. For most surface-mount designs using standard solder profiles and thermal pads, substitution is feasible without redesign. Always verify latest datasheets for absolute maximum ratings and test under actual operating conditions to ensure continuity of performance.
How does the capacitance behavior of the VS-HFA16TB120SPBF influence high-frequency filtering or snubber design in power conversion stages?
The datasheet does not specify junction capacitance, but based on similar HEXFRED® devices, it likely ranges between 50–100 pF at 1.2 kV reverse bias. This moderate capacitance contributes to faster transition times during switching, aiding in reducing dv/dt stress on adjacent components. In snubber networks, it helps limit resonant peaks but may require tuning to avoid unintended oscillations at high switching frequencies (>200 kHz). Designers should model the total capacitance including package effects when simulating EMI behavior or selecting damping resistors.
What advantages does the TO-263AB package offer over through-hole alternatives when mounting the VS-HFA16TB120SPBF in compact power modules?
The TO-263AB (D2PAK) enables direct surface mounting with excellent thermal conductivity via its exposed metal tab to a copper plane, reducing thermal resistance by up to 30% compared to traditional TO-247. This allows higher power density in space-constrained designs like motor controllers or LED drivers. Additionally, automated pick-and-place assembly improves yield and reduces labor costs. The three-terminal configuration also simplifies Kelvin connections for precise current sensing, enhancing measurement accuracy in feedback loops.
How do environmental certifications like REACH unaffected and EAR99 status impact global sourcing decisions involving the VS-HFA16TB120SPBF?
The REACH unaffected declaration means no SVHCs (Substances of Very High Concern) above threshold levels are used, easing compliance in EU markets. EAR99 classification indicates minimal export restrictions, facilitating international procurement without complex license requirements. These factors reduce regulatory risk for manufacturers targeting North America, Europe, and Asia, streamlining supply chain logistics and avoiding delays due to customs scrutiny—critical for just-in-time delivery in consumer electronics or medical equipment sectors.
In what scenarios would the VS-HFA16TB120SPBF outperform a general-purpose rectifier like the UF4007 even when voltage and current ratings appear adequate?
While the UF4007 serves low-voltage applications (1 kV max), the VS-HFA16TB120SPBF dominates in high-voltage, high-current contexts due to its optimized drift region and field plates, reducing minority carrier storage. Even if a lower-voltage part were mistakenly selected, the VS-HFA16TB120SPBF’s 135 ns trr prevents catastrophic failure under inductive flyback loads common in transformer-based supplies. Its 16 A capability also eliminates parallel-string solutions, simplifying PCB area and BOM count—offering tangible advantages in cost-sensitive, high-reliability industrial systems.
What role does the HEXFRED® series designation play in ensuring interchangeability with other components in a multi-stage power supply?
The HEXFRED® branding indicates adherence to Vishay’s standardized epitaxial planar construction, ensuring consistent electrical characteristics across the series (e.g., HFA16TBxxx). This predictability supports modular design practices where multiple rectifiers share thermal and dynamic profiles, enabling easier paralleling or redundancy schemes. When integrating the VS-HFA16TB120SPBF into a stack of regulators or pre-regulators, designers benefit from uniform switching behavior, simplifying simulation models and reducing empirical tuning during prototyping.
How should PCB land patterns be optimized for the VS-HFA16TB120SPBF to achieve optimal thermal and electrical performance?
The TO-263AB requires a large thermal pad on the PCB with multiple vias connecting to inner or bottom-layer ground planes. Recommended pad dimensions align with IPC-7351 guidelines for D2PAK, ensuring solder fillets cover the entire tab. Use at least six 0.3 mm vias under the tab to minimize junction-to-board thermal resistance to below 2.5°C/W. Keep cathode and anode traces short and wide to reduce IR drop and inductance. Avoid routing high-current paths near the gate driver loop in mixed-signal boards to prevent coupling noise.

Parts with Similar Specifications

The three parts on the right have similar specifications to Vishay General Semiconductor - Diodes Division VS-HFA16TB120SPBF

Product Attribute VS-HFA16TB120PBF VS-HFA16TB120STRRP VS-HFA16TB120STRLP VS-HFA16TB120SL-M3
Part Number VS-HFA16TB120PBF VS-HFA16TB120STRRP VS-HFA16TB120STRLP VS-HFA16TB120SL-M3
Manufacturer Vishay General Semiconductor - Diodes Division Vishay General Semiconductor - Diodes Division Vishay General Semiconductor - Diodes Division Vishay General Semiconductor - Diodes Division
Series - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Mounting Type - Surface Mount Through Hole Surface Mount
Technology - - - -
Voltage - Forward (Vf) (Max) @ If - - - -
Current - Reverse Leakage @ Vr - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Base Product Number - DAC34H84 MAX500 ADS62P42
Voltage - DC Reverse (Vr) (Max) - - - -
Speed - - - -
Current - Average Rectified (Io) - - - -
Reverse Recovery Time (trr) - - - -
Operating Temperature - Junction - - - -
Capacitance @ Vr, F - - - -

VS-HFA16TB120SPBF Datasheet PDF

Download VS-HFA16TB120SPBF pdf datasheets and Vishay General Semiconductor - Diodes Division documentation for VS-HFA16TB120SPBF - Vishay General Semiconductor - Diodes Division.

Datasheets
VS-HFA16TB120SPbF.pdf
PCN Assembly/Origin
Mult Devices Assembly 19/Jan/2018.pdf
Other Related Documents
Packaging Information.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

  • Embe***dMotion
    Aug 5, 2026

    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

  • FPGA***dio
    Jul 30, 2026

    This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

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VS-HFA16TB120SPBF Image

VS-HFA16TB120SPBF

Vishay General Semiconductor - Diodes Division
98D-VS-HFA16TB120SPBF

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