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B0853-AL SMT Planar Transformer

for Texas Instruments LM5033

RoHS compliant
  • Developed for Texas Instruments LM5033 PWM Controller
  • For push-pull, half-bridge and full-bridge topologies
  • Ideal for Intermediate bus converters (IBC)

Buy Now:
Count Unit price
1 $10.83
1000 $9.28
5000 $7.29

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
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Typical Application

Works with Texas Instruments LM5033

Input Voltage Output Power Fsw
Sec Aux
40 V 60 V 10 V , 20 A 10 V , 0.02 A 200 W 250 kHz


Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
min (µH) 2
DCR max (mΩ) 3 Leakage
max (µH) 4
Turns Ratio 5 Isolation
Voltage (Vrms) 6
Pri Sec Aux Pri : Sec : Aux
B0853-AL_ 46.8 10.4 4.0 160.0 0.10 1 : 0.8 : 0.8 1500
  1. When ordering, please specify packaging code: e.g. B0853-ALD
  2. Inductance measured on an Agilent/HP 4284 between pins 3 and 4 at 250 kHz, 0.1 Vrms, 0 Adc
  3. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  4. Leakage inductance measure between pins 3 and 4 at 100 kHz, 0.1 Vrms, 0 Adc with pins 6 and 10 shorted.
  5. Turns ratio is with the secondary windings connected in series.
  6. 1500 Vrms isolation, primary to secondary windings.


  • RoHS-compliant. 260°C compatible. Matte tin over nickel over brass terminations.


  • D = 13″ machine ready reel. EIA-481 embossed plastic tape (200 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to D.
RoHS compliant
Ambient temperature range:
−40°C to +85°C
Storage temperature range:
Component: −40°C to +85°C
Tape and reel packaging: −40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):



Physical characteristics


Tape and Reel specification


Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T part_or_v.gif
200 330 100 13 50,4 44,4 44 32 4 2 9,4 0,37

General specification

Core Material:
11.6 g
200/13″ reel 44 mm tape width

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