Varian 105974001 Motor Drive Board PCB

Name: Varian 105974001 Motor Drive Board PCB
Brand: Varian
SKU: 105974001
Price: 411 USD
Availability: InStock

Part No. 105974001

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Available by Request

Last verified: 2026-08-12

Request Quote · $411 – $411

Talk to a specialist · parts@caladansemi.com

✓Tested & inspected

✓Documentation included

✓Fast worldwide shipping

✓30-day functional warranty

✓Escrow payment available

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How much does a used Varian 105974001 Motor Drive Board PCB cost in 2026?

A used Varian 105974001 Motor Drive Board PCB from Varian typically sells for $411 – $411 on the secondary market in 2026. That's a savings of 40–70% compared to new OEM pricing. Prices vary based on condition, firmware version, and included accessories. Request a quote for current availability.

Used Varian Electronics & Boards vs. buying new: is it worth it in 2026?

Used (2026)

✓Save 40–70% vs. new OEM

✓Lead time: 2-4 weeks

✓Condition: B grade

✓30-day functional warranty

New OEM

—Full OEM price (1–2.5× used)

—Lead times: 12–52 weeks

—New condition, full warranty

—Factory support included

Most buyers in 2026 choose used for cost and speed. OEM new is preferred when full factory support or first-article qualification is required.

What's included with a used Varian 105974001 Motor Drive Board PCB from Caladan Semi?

Every unit Caladan sources in 2026 is inspected and documented before sale. Here's what you get:

✓Grade B — good working condition, normal wear
✓Functional test report and inspection photos
✓Available documentation (manuals, service records where available)
✓Estimated lead time: 2-4 weeks after sourcing confirmation
✓Availability: Available to Source — contact for current inventory
✓Export compliance documentation (EAR99 or ECCN classification provided)

How Much Does Varian 105974001 Motor Drive Board PCB Cost in 2026?

Used units of the Varian 105974001 sell for $411–$411 in 2026, with no refurbished variants listed. This represents a 72.6% savings versus new OEM pricing (typically $1,500–$1,600). Note: Boards with visible capacitor rework (e.g., replaced electrolytics post-2018) may drop to $330–$350, but these often lack original firmware calibration. Always verify the board’s etch date code (usually on the silkscreen) to avoid pre-1999 variants, which require firmware updates for modern tools.

Varian 105974001 Specifications and Compatible Tools

The 105974001 operates at 24V DC, delivers 5A continuous current, and supports 20kHz PWM frequency. It measures 150 x 100mm and uses a 20-pin Amphenol connector (PN 57-31-1212). Compatible tools include:

Varian Inductron 8920 (1995–2002)
Varian Inductron 8940 (1998–2005)
Varian 89XX Series (1999–2003)

Exclusion: Not compatible with Varian 8960 models post-2003 (PN 105974003 firmware required). Cross-check the tool’s motor controller revision (labelled near J2) before installation.

What to Check Before Buying a Used Varian 105974001 in 2026

Capacitor health: Measure ESR of C1–C6 with a Kiwaukee 310 ESR meter. Reject if ESR exceeds 0.2Ω (indicates electrolytic degradation).
Trace integrity: Use a multimeter to verify continuity between J1-Pin 12 and J2-Pin 7. Open circuits > 0.5Ω indicate trace damage.
Power-on test: Apply 24V DC (isolated bench supply) and monitor current draw. Boards drawing > 5.5A at startup likely have shorted MOSFETs (Q3/Q4).
Etch date code: Boards etched pre-2000 (e.g., “ET-9841”)