Site Settings

Warehouses
Language settings
Currency settings
Resources
Video Library
Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

GA343x Flyback Transformers

for 12 Volt Nominal Input

RoHS compliant
  • Developed for applications with 10 – 14 V input
  • Bias winding provides power to the chipset
  • RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations
Buy Now:
Count Unit price
1 $3.67
250 $2.95
500 $1.96
1000 $1.64
2500 $1.47
5000 $1.34

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

. in stock, ready to ship today.
Request a Sample:

Specifications

Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
Power (W) Input Voltage (V) Inductance
at 0A (µH) 2
(Tolerance: ±10%)
Inductance
min at   2.1 A (µH)
DCR max (mΩ) 3 Leakage
Inductance
max (µH) 4
Turns Ratio 5 Frequency (kHz) Isolation
Voltage (Vrms) 6
Secondary
Output (V, A) 7
Pri Sec Aux Pri : Sec : Aux
GA3430-BL_ 5 10 14 25.0 22.5 90.0 15.0 95.0 0.685 1 : 0.2 : 0.2 250 1500 5 V , 1 A
GA3431-BL_ 5 10 14 25.0 22.5 90.0 5.0 70.0 0.945 1 : 0.143 : 0.143 250 1500 3.3 V , 1.5 A
Notes
  1. When ordering, please specify packaging code: GA3431-BLD.
  2. Inductance is for the primary, measured at 250 kHz, 0.3 Vrms, 0 Adc.
  3. DCR for the secondary is per winding.
  4. Leakage inductance measured between pins 3 and 4 with all secondary pins shorted.
  5. Turns ratio is with the secondary windings connected in parallel.
  6. 1500 Vrms isolation from primary and bias to secondary;
    500 Vrms isolation from primary to bias, tested for one minute.
  7. Output is with the secondary windings connected in parallel. Bias winding output: 5.0 V, 20 mA (GA3430); 3.3 V, 20 mA (GA3431).

Termination:

  • RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost.

Packaging:

  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (250 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.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –40°C to +85°C.
Packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Schematics

ga3429s-(1).gif

Secondary windings to be connected
in parallel on the PC board

Physical characteristics

ga3429d-(1).gif


dims_inches_mm-(5).gif

Tape and Reel specification

tapereel_pl-(43).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_f-(2).gif
250 330 100 13 38,4 32,4 32 20 4 2 11,2 0,5

General specification

Core Material:
Ferrite
Weight:
3.9 to 4.1 g
Packaging:
250 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 20 mm pocket spacing, 11.2 mm pocket depth.