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Honeywell 388B66M9102 Modular Stackable Potentiometer

Honeywell's 388 and 389 series potentiometers are modular, stackable components designed for versatility and adaptability. With a 1/2 in. square footprint, these potentiometers offer a wide range of design options, including various shaft, bushing, and terminal styles. They are suitable for a broad scope of industries and sophisticated systems, providing countless configuration possibilities. Features include small size, stackability, multiple switch options, and detents for precise positioning. The series meets MIL-R-94 and MIL-R-22097 performance characteristics where applicable.

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Source:DigiKey
Part No:388B66M9102
Stock:86
Inv Date:06-01-2026
Price: Unit price: $156.31
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Part No:388B66M9102
Stock:0
Inv Date:06-02-2026
Price: N/A
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Part No:388B66M9102
Stock:86
Inv Date:06-01-2026
Price: Unit price: $142.83
Buy/RFQ:
Part No:388B66M9102
Stock:86
Inv Date:06-01-2026
Price: Unit price: $142.83
Buy/RFQ:
Part No:388B66M9102
Stock:57
Inv Date:06-01-2026
Price: Unit price: $156.35
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Honeywell 388B66M9102 Modular Stackable Potentiometer Specifications:

  • Resistance Range: Linear: 100Q to 5 Megohms, Tapered: S00Q to 2 Megohms (Series 388); Linear: 5Q to 5 Megohms, Tapered: 100Q to 2 Megohms (Series 389)
  • Resistance Tolerance: Linear: thru 500KQ +10%; above 500KQ +20% (Series 388); thru 100KQ +10%; above 100KQ +20% (Series 388); +10% standard; +5% special (Series 389)
  • Taper Tolerance: +20% of nominal resistance at 50% +3% mechanical rotation (Series 388); +20% of nominal resistance at +50% mechanical rotation (Series 389)
  • Independent Linearity: +5% standard with specials available
  • End Resistance: 4Q maximum each end linear and low side of taper (Series 388); 5Q to 2.5KQ (Series 389)
  • Dynamic Noise (C.R.V.): 1.5% of total R, standard linear (Series 388); 3.0% of total total R, standard linear (Series 388); 1.0% of total R, special linear (Series 388)
  • Static Noise: Up to 30KQ - 20db (Series 388); Up to 100Q - 25db (Series 388); 10KQ - 15db (Series 388); 100KQ - 12 db (Series 388); 1 Megohms +3db (Series 388)
  • Power Rating: 0.5 Watt @ 70°C bushing mounting (Series 388); 1.0 watt @ 85°C bushing mounting (Series 388); 0.25 Watt @ 70°C PC mounting (Series 388); 0.5 watt @ 85°C PC mounting (Series 388)
  • Working Voltage: 350 Vdc across end terminals (Series 388)
  • Dielectric Withstanding Voltage: 750 Vac @ ATM pressure (Series 388)
  • Insulation Resistance: 1000 Megohms minimum for dry, clean conditions @ 25°C (Series 388)
  • Temperature Coefficient: See Chart C page 10 (Series 388)
  • Temperature Range: -55°C to 150°C
  • Load Life: 10% maximum change in resistance and 5% maximum change in resistance within end resistance limits (Series 388)
  • Rotational Life: 10% maximum resistance change up to 25,000 cycles under load (Series 388)
  • Low Temperature Operation: Less than 3% change in total R (Series 388)

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Frequently Asked Questions

Where can I buy Honeywell 388B66M9102?

You can click on the BUY or RFQ button to purchase 388B66M9102 from an authorized Honeywell distributor.

How do I troubleshoot issues or seek technical support for part 388B66M9102?

You can download the 388B66M9102 datasheet or visit the Honeywell website for support.

Who is the manufacturer of 388B66M9102?

Honeywell

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