PSAD1A238BH Cooling Fan 12V 1.75A 120mm 6000 RPM for Antminer
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PSAD1A238BH 120mm 12V 6000 RPM Cooling Fan for Antminer ASIC Miner
The PSAD1A238BH is a 120x120x38mm 12VDC square cooling fan built for ASIC mining chassis. With a rated current of 1.75A, 6000 RPM rated speed and a 4-wire connector (12V + GND + Tach + PWM), it provides the high-static-pressure airflow needed to push air across the hashboard heatsinks in Antminer S9 and similar miner chassis.
Ball bearing construction is the key reliability feature: plain-bearing 12cm fans rarely make it past 12 months of continuous mining duty before drying out. The PSAD1A238BH is built for the 24/7 service life expected on production farm units.
Specifications
| Parameter | Value |
|---|---|
| Part number | PSAD1A238BH |
| Manufacturer | AAVID |
| Condition | New |
| Dimensions | 120mm x 120mm x 38mm |
| Rated voltage | DC 12V |
| Rated current | 1.75A |
| Rated speed | 6000 RPM |
| Bearing type | Ball bearing |
| Connector | 4-wire (12V + GND + Tach + PWM) |
| Compatibility | Antminer S9 and other ASIC miners |
Where the PSAD1A238BH fits in the miner
The 120x120x38mm form factor matches the standard fan apertures on Antminer S9-class chassis. The 4-wire connector pin-out provides 12V power, ground, a tach signal read back to the control board for fan-stop detection and a PWM input for speed control. Wide-angle blades deliver high static pressure — the right airflow profile for pushing air through the densely finned hashboard heatsinks.
Compatibility
Replacement fan for the 120x120x38mm 4-wire position on Antminer S9 chassis and other ASIC miners that use the same form factor and connector pin-out. Confirm the 4-pin connector orientation against the miner's control-board fan header before plugging in. For 4-pin variants with different RPM ratings, see the KZ12038B012X.
Common failure symptoms
- Miner dashboard shows fan-stop or fan-low alarm at boot
- Audible bearing rattle or grinding from front or rear of the chassis
- Hashboard temperature climbs to throttle threshold under sustained load
- Visible dust impaction blocking the 120mm aperture
- Fan spins up then stalls — typical of a dried ball bearing on a tired unit
Frequently asked questions
Is this a 4-wire PWM fan?
Yes — the PSAD1A238BH carries 12V + GND + Tach + PWM. The miner control board can both monitor fan speed and command PWM duty.
How does it compare to the KZ12038B012X?
Both are 120x120x38mm 12V 4-wire fans. The PSAD1A238BH is rated at 1.75A / 6000 RPM; the KZ12038B012X variant runs at 2.80A. Pick by the original spec marked on the miner's fan label.
Does it work in immersion deployments?
The PSAD1A238BH is an air-cooled fan; for immersion conversions use a fan simulator instead — the immersion control board will throw a fan-stop alarm without one.
Do you stock other 12cm fan variants?
Yes — KZ12038B012X 2.80A and DF1203812B2UN 12cm variants are stocked alongside this PSAD1A238BH.
Related products
- KZ12038B012X 120x120x38mm 12V 2.80A High-Speed Fan
- DF1203812B2UN Martech 12cm Fan for Antminer L7 / S19
- R4-14038-64PK-B1 140mm Fan for Ebit E9 / E10
- KF2510 6-Pin Vertical Fan Header Connector
Contact contact@lys-sz.com for volume pricing or compatibility questions.
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