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UA8164-BE Coupled Inductor

for Microchip Technology

RoHS compliant halogen free
  • Designed to work in a flyback topology for a haptic driver circuit
  • Switching frequency: 300 kHz; Vin: 3.0 V; Vout: 230 V
  • 1 : 10 turns ratio
  • 200 Vrms, 2 seconds winding-to-winding isolation (hipot)
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Electrical specifications at 25°C. Max capacitance: 26 pF at 100 kHz, 0.1 Vrms.

For Flyback Applications

Part number 1 Inductance (µH) 2
(Tolerance: ±20%)
DCR (mΩ) 3 Isolation
Voltage (V)
Inductance (nH) 4
Turns Ratio
L1 max L2 max
UA8164-BE_ 1.0 35.0 2400 200 105 1 : 10

For SEPIC Applications

Part number 1 Inductance (µH) 2
(Tolerance: ±20%)
DCR max (mΩ) 3 Leakage
Inductance (nH) 4
Isat (mA) 5
L1 L2
UA8164-BE_ 1.0 35.0 2400 105 10700
  1. When ordering, please specify packaging code: e.g. UA8164-BEC
  2. Inductance is measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent.
  3. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  4. Leakage inductance is for L1 and is measured at 100 kHz, 0.1 Vrms with L2 shorted
  5. Isat: DC current applied to L1 at which the inductance drops 10% from its value without current.


  • RoHS compliant matte tin over nickel over phos bronze.


  • C = 7" machine-ready reel
    EIA-481 embossed plastic tape 250 parts per full reel).
  • B = Less than full reel
    In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter C instead.
  • D = 13" machine-ready reel
    EIA-481 embossed plastic tape. Factory order only, not stocked (1000 parts per full reel).
RoHS compliant , halogen free
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Inductance vs Current

Inductance vs Frequency



Physical characteristics



Tape and Reel specification


Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
7" (178 mm) 13" (330 mm) A B C D E W P Po P1 H T part_or_ak.gif
250 1000* 178/330 60/100 13 22,4 16,4 16 12 4 2 4,9 0,4
* Special order

General specification

Core Material:
430 mg
250/7″ reel; 1000/13″ reel Plastic tape: 16 mm wide, 0.4 mm thick, 12 mm pocket spacing, 4.9 mm pocket depth
Winding to Winding Isolation:
200 Vrms applied for 2 seconds


Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info

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