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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

ZC1905-BE Flyback Transformers

for STMicroelectronics STEVAL-A6986IV3

RoHS compliant halogen free AEC-Q flag
  • Optimized for STEVAL-A6986IV3 from STMicroelectrics with an isobuck-boost topology and an input voltage of up to 28 V 
  • Suitable for isolated IGBT/SiC gate driver, On-board charger for HEV/EV, and industrial applications 
  • Higher isolation and creepage and clearance version is available per request 
  • AEC-Q200 qualified 

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Typical Application

Works with STMicroelectrics STEVAL-A6986IV3

Input Voltage Output 1 Power Fsw
28 V 30 V , 0.1 A 3 W 500 kHz

Specifications

Electrical specifications at 25°C.

Part number
(Hover for schematics)
Inductance
at 0A (µH) 2
(Tolerance: ±10%)
Isat (A) 3 DCR max (Ω) Leakage
Inductance
max (µH) 4
Turns Ratio 5 Isolation
Voltage (Vrms) 6
Pri Sec1 Sec2 Sec3 Sec4 Pri : Sec1
ZC1905-BED 20 4.8 0.05 1.95 1.95 1.95 1.13 0.25 1 : 2.69 1500
Notes
  1. Sec1, Sec2, Sec3 outputs: 30 V, 0.10 A; Sec4 output: 30 V, 0.25 A.
  2. Inductance is for the primary, measured at 500 kHz, 0.1 Vrms, 0 Adc.
  3. DC current that causes the primary inductance to drop 30% from its value without current.
  4. Leakage inductance is for the primary with the secondary windings shorted.
  5. The turns ratio from the primary to each of the four secondaries is 1 : 2.69.
  6. 1500 Vrms, one minute isolation (hipot) between primary and secondary windings.

Termination:

  • RoHS-compliant, halogen free. 260°C compatible. Tin-silver-copper over tin over nickel over phos bronze terminations.

Packaging:

  • 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).
Environmental
Environmental:
RoHS compliant , halogen free
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
Component: –40°C to +125°C
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+165°C (Ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

L vs Current

Schematics

zc1905s.gif

Physical characteristics

zc1905d.gif

dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.gif

 
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_c.gif
200 330 100 13 50,4 44,4 44 28 4 2 9,3 0,4

General specification

Core Material:
Ferrite
Weight:
5.1 – 5.3 g
Packaging:
200 per 13″ reel Plastic tape: 44 mm wide, 0.40 mm thick, 28 mm pocket spacing, 9.3 mm pocket depth

Soldering/Washing

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.

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