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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Vishay Siliconix IRFZ34SPBF

Name: IRFZ34SPBF
Brand: Vishay Siliconix
SKU: IRFZ34SPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFZ34SPBF

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: IRFZ34SPBF.pdf

Description:: MOSFET N-CH 60V 30A D2PAK

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Product details

Overview

IRFZ34SPBF from Vishay Siliconix is a 60 V, 30 A N-channel power MOSFET in D2PAK (TO-263) package, optimized for high-efficiency switching in DC-DC converters, motor drives, and power supplies. It delivers 0.050 Ω R_DS(on) at V_GS = 10 V, supports 175 °C operation, and features fast switching with 46 nC total gate charge.

For engineers reviewing the IRFZ34SPBF datasheet, IRFZ34SPBF pinout, IRFZ34SPBF application, or IRFZ34SPBF equivalent, key selection criteria include its 60 V V_DS, 30 A continuous drain current at T_C = 25 °C, 1.7 °C/W junction-to-case thermal resistance, and suitability for high-current surface-mount power conversion designs.

Technical Context

This discrete N-channel enhancement-mode MOSFET uses third-generation silicon processing to achieve low on-resistance per die area while maintaining rugged avalanche capability (200 mJ single-pulse). Its D2PAK package enables high-power dissipation (88 W at T_C = 25 °C) and low internal connection resistance.

The device operates with ±20 V gate-source voltage rating, exhibits 2.0–4.0 V gate threshold voltage, and integrates a fast-recovery body diode (t_rr = 120–230 ns, Q_rr = 700–1400 μC), supporting synchronous rectification and inductive load switching.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - Maximum blocking voltage for 48 V bus and automotive 36 V systems
R_DS(on) @ V_GS = 10 V	0.050 Ω - Enables <1.8 W conduction loss at 6 A RMS in 12 V/30 A switch-mode power supply
I_D Continuous @ T_C = 25 °C	30 A - Supports high-current output stages without forced air cooling
Q_g	46 nC - Determines gate drive power requirement; compatible with standard 1 A peak drivers
R_thJC	1.7 °C/W - Allows direct heatsinking to PCB copper or external heatsink for thermal management
E_AS	200 mJ - Withstands unclamped inductive energy in motor control and relay driving
T_J Operating Range	-55 to +175 °C - Qualified for under-hood automotive and industrial ambient environments

Pinout & Package

D2PAK (TO-263) surface-mount package with exposed drain tab for thermal and electrical connection. Dimensions: 10.67 mm × 9.65 mm × 4.83 mm (L × W × H); thermal pad occupies full bottom surface.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control input	Receives 10 V logic-level drive; requires 46 nC charge for full enhancement
D (Drain)	High-side power terminal	Connected to exposed metal tab; must be soldered to large copper pour for thermal conduction
S (Source)	Power return / reference node	Provides low-impedance return path; ties to ground plane or source of downstream load

Key Features

Feature	Design Value
Low R_DS(on) per silicon area	Enables compact high-current designs without paralleling devices
175 °C maximum junction temperature	Supports operation in sealed enclosures or high-ambient industrial environments
Fast switching with 13 ns turn-on delay	Reduces switching losses in 100–500 kHz SMPS applications
Body diode with 120–230 ns t_rr	Minimizes reverse recovery losses in synchronous buck and half-bridge topologies
D2PAK surface-mount construction	Offers higher power density than TO-220 while enabling automated assembly

Applications

DC-DC Converters	Motor Drives
Use Scenario: Step-down regulation in 12 V to 5 V/3.3 V point-of-load supplies for FPGA and microprocessor cores. IC Role / Device Role / Timing Role: High-side synchronous rectifier switch in buck converter topology. Use Value: 0.050 Ω R_DS(on) reduces conduction loss by >30% vs. legacy 0.075 Ω alternatives at 15 A load.	Use Scenario: Half-bridge driver for 24 V brushed DC motors in industrial actuators and HVAC dampers. IC Role / Device Role / Timing Role: Low-side switching element controlling motor direction and PWM speed modulation. Use Value: 120 A pulsed drain current rating handles motor stall currents without derating.
Power Supplies	Lighting Ballasts
Use Scenario: Primary-side switch in offline 60 W LED driver with universal AC input. IC Role / Device Role / Timing Role: Fast-switching power switch in flyback converter operating at 65 kHz. Use Value: 46 nC Q_g enables efficient gate drive with minimal driver IC power consumption.	Use Scenario: Electronic ballast for fluorescent lamps in commercial lighting fixtures. IC Role / Device Role / Timing Role: Resonant inverter switch in series-resonant half-bridge configuration. Use Value: 200 mJ E_AS withstands lamp ignition transients and open-circuit faults.

DC-DC Converters

Motor Drives

Use Scenario: Step-down regulation in 12 V to 5 V/3.3 V point-of-load supplies for FPGA and microprocessor cores.

IC Role / Device Role / Timing Role: High-side synchronous rectifier switch in buck converter topology.

Use Value: 0.050 Ω R_DS(on) reduces conduction loss by >30% vs. legacy 0.075 Ω alternatives at 15 A load.

Use Scenario: Half-bridge driver for 24 V brushed DC motors in industrial actuators and HVAC dampers.

IC Role / Device Role / Timing Role: Low-side switching element controlling motor direction and PWM speed modulation.

Use Value: 120 A pulsed drain current rating handles motor stall currents without derating.

Power Supplies

Lighting Ballasts

Use Scenario: Primary-side switch in offline 60 W LED driver with universal AC input.

IC Role / Device Role / Timing Role: Fast-switching power switch in flyback converter operating at 65 kHz.

Use Value: 46 nC Q_g enables efficient gate drive with minimal driver IC power consumption.

Use Scenario: Electronic ballast for fluorescent lamps in commercial lighting fixtures.

IC Role / Device Role / Timing Role: Resonant inverter switch in series-resonant half-bridge configuration.

Use Value: 200 mJ E_AS withstands lamp ignition transients and open-circuit faults.

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
IRFZ44NPBF	60 V V_DS, 49 A I_D, 0.028 Ω R_DS(on), same D2PAK package	Higher current and lower R_DS(on) but larger Q_g (71 nC) increases gate drive demand	Preferred when conduction loss dominates and gate drive capability permits
STP30NF20	200 V V_DS, 30 A I_D, 0.055 Ω R_DS(on), TO-220 package	Higher voltage rating but through-hole mounting and higher thermal resistance (2.5 °C/W)	Selected where 200 V blocking is required or legacy through-hole assembly is mandated

Compared with IRFZ44NPBF and STP30NF20, the IRFZ34SPBF offers optimal balance of 60 V rating, 30 A capability, and 46 nC gate charge for cost-sensitive, thermally constrained surface-mount power switches-making it ideal for mid-power DC-DC and motor control where layout space and driver simplicity are critical.

Availability

IRFZ34SPBF is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, and industrial power supplies requiring stable component supply and long-term manufacturing continuity.

Supply support for IRFZ34SPBF 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 and passive components, specializing in high-reliability power MOSFETs, diodes, and optoelectronics for industrial, automotive, and computing markets.

The IRFZ34SPBF belongs to Vishay's third-generation power MOSFET family designed specifically for high-efficiency, high-current switching in surface-mount power conversion systems-emphasizing low R_DS(on), fast switching, and rugged thermal performance.

FAQ

What is the maximum continuous drain current rating for IRFZ34SPBF at 100 °C case temperature?

The IRFZ34SPBF has a continuous drain current rating of 21 A at T_C = 100 °C, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limits of the D2PAK package and ensures safe operation under sustained high-temperature conditions without exceeding the 175 °C maximum junction temperature. The IRFZ34SPBF maintains reliable conduction performance across industrial temperature ranges.

Does IRFZ34SPBF support logic-level gate drive?

No, the IRFZ34SPBF is not a logic-level MOSFET. Its gate threshold voltage range is 2.0–4.0 V, but full enhancement requires V_GS = 10 V to achieve the rated 0.050 Ω R_DS(on). Driving the IRFZ34SPBF with only 3.3 V or 5 V will result in significantly higher on-resistance and excessive conduction loss. The IRFZ34SPBF must be paired with a dedicated gate driver or 10 V supply for optimal performance.

What is the avalanche energy rating of IRFZ34SPBF and how is it tested?

The IRFZ34SPBF is rated for 200 mJ single-pulse avalanche energy (E_AS) under test conditions of V_DD = 25 V, starting T_J = 25 °C, L = 260 μH, R_g = 25 Ω, and I_AS = 30 A. This rating confirms robustness against inductive switching transients in motor control and relay driving. The IRFZ34SPBF's specified E_AS is validated per JEDEC standards and applies directly to unclamped inductive load conditions.

How does the body diode performance of IRFZ34SPBF compare to standard rectifiers?

The IRFZ34SPBF body diode has a forward voltage of 1.6 V at 30 A and 25 °C, with reverse recovery time of 120–230 ns and Q_rr of 700–1400 μC. While slower and higher-V_F than Schottky diodes, it eliminates need for external freewheeling diodes in half-bridge and synchronous rectifier circuits. The IRFZ34SPBF's integrated diode is optimized for controlled recovery in hard-switched topologies-not ultra-fast or soft-recovery applications.

Is IRFZ34SPBF RoHS-compliant and halogen-free?

Yes, the IRFZ34SPBF is lead (Pb)-free and RoHS-compliant per EU Directive 2011/65/EU. It meets Vishay's material categorization requirements for environmentally conscious manufacturing. The "PbF" suffix explicitly denotes lead-free termination, and the device is also halogen-free per Vishay specification 99912. The IRFZ34SPBF complies with both RoHS and halogen-free standards without performance trade-offs.

IRFZ34SPBF Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 30A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 50mOhm @ 18A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 46 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1200 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 3.7W (Ta), 88W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-263 (D2PAK)

IRFZ34SPBF FAQ

1.How can I place an order for IRFZ34SPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFZ34SPBF 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 IRFZ34SPBF reliable?

The price and inventory of IRFZ34SPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFZ34SPBF is usually 5 days.

3.What payment methods are accepted for IRFZ34SPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFZ34SPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFZ34SPBF?

IRFZ34SPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFZ34SPBF 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 IRFZ34SPBF?

For technical support, including IRFZ34SPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFZ34SPBF requirements.

6.How does Aetrix verify that IRFZ34SPBF is sourced from the original manufacturer or authorized distributors?

All IRFZ34SPBF 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 IRFZ34SPBF meets industry standards.

7.What is the process for return or replacement of IRFZ34SPBF?

All IRFZ34SPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFZ34SPBF, 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 IRFZ34SPBF part is unused and in its original packaging.

Return procedure for IRFZ34SPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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