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Small square 40x40x20mm black PWM case fan with four wires

SXDOOL

SXDOOL FD124020EB-H 40x40x20mm 12V 0.21A 4-wire PWM case fan

SKU CH-Z8T5-7MNYM MPN FD124020EB-H

A 40 × 40 × 20 mm 12 V PWM case fan with dual ball bearings and a flame-retardant PBT frame rated for −10 °C to +70 °C operation

  • 4-wire PWM enables precise speed control
  • Dual ball bearing ensures long service life
  • PBT frame with 30% glass fibre resists heat to 70 °C
  • 12 V 0.21 A draws minimal power
  • Compact 40×40×20 mm fits tight spaces

Compact 40 mm PWM case fan

The SXDOOL FD124020EB-H is a 40x40x20 mm 12 V 0.21 A 4-wire PWM case fan built for tight spaces. Its frame and blades are one-time injection-moulded PBT with 30 % glass fibre and VO flame-retardant rating. A two-ball bearing supports counterclockwise rotation when viewed from the blade side.

Suited for small-form-factor chassis

This fan fits 40 mm mounting patterns and offers PWM speed control via a standard 4-pin connector. It operates from -10 °C to +70 °C and stores down to -40 °C. Builders who need larger frame sizes, higher static pressure or different voltage rails should look elsewhere.

40x40x20 mm mounting footprint decides fit

The 40 mm square by 20 mm thick frame determines whether the fan can be installed in your case or on your heatsink. Verify that your hardware provides exactly this mounting pattern and clearance before purchasing.

Ciri-ciri utama

  • 4-wire PWM enables precise speed control
  • Dual ball bearing ensures long service life
  • PBT frame with 30% glass fibre resists heat to 70 °C
  • 12 V 0.21 A draws minimal power
  • Compact 40×40×20 mm fits tight spaces

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Soalan tentang produk ini

What does the 4-pin PWM interface control on this fan?

The 4-pin PWM interface provides power and speed control, allowing the motherboard to adjust fan RPM through pulse-width modulation.

What are the mounting dimensions for the FD124020EB-H?

The frame measures 40 mm by 40 mm with a 20 mm thickness, matching the standard 4020 form factor for compatible mounting holes.

How is the 4-wire PWM fan installed, and what is a common wiring mistake?

Connect the 4-pin plug to a motherboard PWM header, aligning the key; a common mistake is plugging it into a 3-pin header, which disables speed control.

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