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Vishay Siliconix IRFU110PBF
- Part No.:
- IRFU110PBF
- Manufacturer:
- Vishay Siliconix
- Category:
- FETs, MOSFETs
- Package:
- TO-251-3 Short Leads, IPAK, TO-251AA
- Datasheet:
-
IRFU110PBF.pdf
- Description:
- MOSFET N-CH 100V 4.3A TO251AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,736
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Product details
Overview
IRFU110PBF from Vishay Siliconix is a 100 V, 4.3 A N-channel Power MOSFET in IPAK (TO-251) package, featuring 0.54 Ω RDS(on) at VGS = 10 V, 8.3 nC total gate charge, and repetitive avalanche rating for robust switching in DC-DC converters, motor drives, and power supplies.
For engineers reviewing the IRFU110PBF datasheet, IRFU110PBF pinout, IRFU110PBF application, or IRFU110PBF equivalent, key selection factors include its 5.0 °C/W junction-to-case thermal resistance, 75 mJ single-pulse avalanche energy, fast 6.9 ns turn-on delay, and compatibility with standard gate drivers in medium-power industrial switching circuits.
Technical Context
This discrete N-channel enhancement-mode MOSFET operates with a gate threshold voltage of 2.0–4.0 V and supports linear-mode operation up to 150 °C junction temperature. Its dynamic dV/dt rating of 5.5 V/ns and body diode reverse recovery time of 100–200 ns enable reliable performance in inductive load switching.
The device integrates a low-inductance internal structure (LD = 4.0 nH, LS = 6.0 nH) and is rated for repetitive avalanche current of 4.3 A, making it suitable for unclamped inductive switching without external snubbers in flyback and buck topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 100 V - Maximum drain-source blocking voltage for 24–48 V system-level designs |
| RDS(on) | 0.54 Ω @ VGS = 10 V - Enables ≤2.3 W conduction loss at 4.3 A continuous drain current |
| Qg | 8.3 nC - Low gate charge allows efficient drive with standard 5–15 V logic-level gate drivers |
| EAS | 75 mJ - Single-pulse avalanche energy rating supports robustness against inductive kickback |
| RthJC | 5.0 °C/W - Enables direct heatsinking to PCB copper or small metal clips for thermal management |
| tr/tf | 16 ns / 9.4 ns - Fast switching transitions reduce switching losses in 100–500 kHz SMPS applications |
Pinout & Package
IRFU110PBF uses the IPAK (TO-251) surface-mount package with straight leads and drain-connected tab for thermal and electrical connection. The case is electrically connected to the drain terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G | Gate | Control electrode requiring ≤±20 V gate-source voltage; low 2.3 nC Qgs enables fast turn-on |
| D | Drain | Main high-side power terminal; internally connected to exposed tab for thermal path and current return |
| S | Source | Reference node for gate drive and current sensing; source inductance of 6.0 nH affects switching ringing |
Key Features
| Feature | Design Value |
|---|---|
| Repetitive avalanche rated | Supports 4.3 A IAR and 2.5 mJ EAR without derating in unclamped inductive circuits |
| Dynamic dV/dt rating | 5.5 V/ns immunity prevents spurious turn-on during high-speed voltage transients |
| Fast switching | 6.9 ns td(on), 16 ns tr, 15 ns td(off), 9.4 ns tf enable high-frequency operation up to 500 kHz |
| Ease of paralleling | Positive RDS(on) temperature coefficient ensures current sharing across multiple devices |
| Simple drive requirements | Threshold voltage range (2.0–4.0 V) and low Qg allow direct interface with microcontroller GPIO or dedicated gate drivers |
Applications
| DC-DC Converter Switch | Brushed DC Motor Driver |
|---|---|
Use Scenario: High-efficiency 48 V input buck converter delivering 5–12 V at up to 3 A. IC Role / Device Role / Timing Role: Primary high-side switch operating at 250 kHz with synchronous rectification. Use Value: 0.54 Ω RDS(on) and 8.3 nC Qg minimize conduction and switching losses, achieving >92% efficiency. |
Use Scenario: H-bridge driver for 24 V brushed motors in industrial actuators and HVAC dampers. IC Role / Device Role / Timing Role: Low-side switching element with PWM control at 20 kHz. Use Value: Repetitive avalanche rating absorbs back-EMF spikes during motor commutation without external clamping. |
| AC-DC Auxiliary Supply | LED Driver Switch |
Use Scenario: Flyback auxiliary supply powering control circuitry in offline SMPS. IC Role / Device Role / Timing Role: Self-oscillating or fixed-frequency primary switch with unclamped inductive stress. Use Value: 75 mJ EAS and 5.5 V/ns dV/dt rating ensure reliability under transformer leakage inductance stress. |
Use Scenario: Constant-current LED driver for commercial signage with 36 V string voltage. IC Role / Device Role / Timing Role: PWM-controlled series switch regulating average LED current. Use Value: Fast 9.4 ns fall time and low Qgd (3.8 nC) suppress switching noise that could interfere with analog dimming signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRFU014PBF | Lower VDS (60 V), lower RDS(on) (0.27 Ω), higher ID (8.4 A) | Not suitable for 100 V bus applications; better for 24–36 V systems with higher current demand | Select when operating voltage ≤60 V and lower on-resistance is prioritized over voltage margin |
| STP16NF10 | Same VDS (100 V), higher RDS(on) (0.22 Ω), TO-220 package, no avalanche rating | Requires external avalanche protection in inductive loads; larger footprint and higher thermal resistance | Choose only if through-hole mounting is mandatory and avalanche robustness is handled externally |
Compared with IRFU110PBF, IRFU014PBF offers higher current capability at lower voltage, while STP16NF10 trades avalanche ruggedness and compact IPAK packaging for legacy through-hole compatibility-neither is pin-compatible, and both require layout revision for substitution.
Availability
IRFU110PBF is available at Aetrix Electronics and suitable for DC-DC converters, brushed motor drivers, and auxiliary power supplies requiring stable component supply and long-term industrial availability.
Supply support for IRFU110PBF 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 Siliconix is a global leader in discrete semiconductors, specializing in high-reliability MOSFETs, diodes, and optoelectronics for industrial, automotive, and computing applications.
The IRFU110PBF belongs to Vishay's third-generation Power MOSFET family, engineered for cost-effective, rugged switching in medium-power applications where avalanche tolerance and thermal efficiency are critical.
FAQ
What is the maximum continuous drain current for IRFU110PBF at 100 °C case temperature?
The IRFU110PBF supports 2.7 A continuous drain current at TC = 100 °C, derated from 4.3 A at 25 °C using a linear derating factor of 0.2 W/°C. This reflects thermal limits of the IPAK package and must be validated with actual board-level heatsinking in the target application.
Does IRFU110PBF have a built-in body diode, and what are its key parameters?
Yes, IRFU110PBF includes an integral body diode rated for 1.5 A continuous and 12 A pulsed source-drain current. Its forward voltage is ≤2.5 V at 1.5 A and 25 °C, with reverse recovery time of 100–200 ns and Qrr of 0.44–0.88 μC-critical for snubberless flyback and synchronous rectifier design.
Is IRFU110PBF suitable for logic-level gate drive?
No, IRFU110PBF is not a logic-level MOSFET. Its gate threshold voltage range is 2.0–4.0 V, but full enhancement requires VGS = 10 V to achieve the specified 0.54 Ω RDS(on). It is designed for standard 10 V gate drivers-not 3.3 V or 5 V microcontroller outputs without level-shifting.
What is the thermal resistance from junction to case for IRFU110PBF, and how does it impact heatsinking?
The IRFU110PBF has a maximum junction-to-case thermal resistance (RthJC) of 5.0 °C/W. This low value means effective heatsinking can be achieved via direct contact between the drain-connected tab and a copper pour or metal clip, enabling >20 W power dissipation with modest thermal interface materials.
Can IRFU110PBF replace IRFU024N in an existing design?
No-IRFU024N has VDS = 240 V and RDS(on) = 0.075 Ω, while IRFU110PBF is rated for only 100 V and 0.54 Ω. Substituting IRFU110PBF would risk catastrophic failure in 200+ V applications and increase conduction losses significantly. Always verify voltage, current, and thermal margins before replacement.
IRFU110PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Package/Case:
- TO-251-3 Short Leads, IPAK, TO-251AA
- Packaging:
- Tube
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 100 V
- Current - Continuous Drain (Id) @ 25°C:
- 4.3A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 540mOhm @ 900mA, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 8.3 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 180 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 25W (Tc)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-251AA
IRFU110PBF FAQ
1.How can I place an order for IRFU110PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IRFU110PBF 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 IRFU110PBF reliable?
The price and inventory of IRFU110PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFU110PBF is usually 5 days.
3.What payment methods are accepted for IRFU110PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFU110PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRFU110PBF?
IRFU110PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRFU110PBF 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 IRFU110PBF?
For technical support, including IRFU110PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFU110PBF requirements.
6.How does Aetrix verify that IRFU110PBF is sourced from the original manufacturer or authorized distributors?
All IRFU110PBF 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 IRFU110PBF meets industry standards.
7.What is the process for return or replacement of IRFU110PBF?
All IRFU110PBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFU110PBF, 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 IRFU110PBF part is unused and in its original packaging.
Return procedure for IRFU110PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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