GA3429-BL COILCRAFT [Coilcraft lnc.], GA3429-BL Datasheet

GA3429-BL

Manufacturer Part Number

GA3429-BL

Description

Flyback Transformers

Manufacturer

COILCRAFT [Coilcraft lnc.]

Datasheet

1.GA3429-BL.pdf (1 pages)

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GA3429-BL_

GA3430-BL_

GA3431-BL_

1. When ordering, please specify packaging code:

2. Inductance is for the primary, measured at 250 kHz, 0.3 Vrms, 0 Adc.

3. Ipk is peak primary current drawn at minimum input voltage.

4. DCR for the secondary is per winding.

5. Leakage inductance measured between pins 3 and 4 with all secondary

6. Turns ratio is with the secondary windings connected in parallel.

7. Output is with the secondary windings connected in parallel. Bias winding

8. Electrical specifications at 25°C.

Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

number

Packaging: D = 13 machine-ready reel. EIA-481 embossed plastic

pins shorted.

output: 3.3 V, 20 mA (GA3429 and GA3431); 5.0 V, 20 mA (GA3430).

Part

B = Less than full reel. In tape, but not machine ready. To

Flyback Transformers

Inductance

±10% (µH)

Secondary windings to be

connected in parallel on PC board

tape (250 parts per full reel).

have a leader and trailer added ($25 charge), use

code letter D instead.

at 0 A

24.0

25.0

Pri

Bias

GA3431-BLD

Inductance

min (µH)

at Ipk

21.6

22.5

Sec

pri

DCR max (mOhms)

Specifications subject to change without notice.

Please check our website for latest information.

sec

5.0

7.5

bias

123

• Designed for the LT3573 Isolated Flyback Converter

• 1500 Vrms isolation from primary and bias to secondary;

• The bias winding provides power to the chipset

Core material Ferrite

Terminations RoHS tin-silver over tin over nickel over phos

bronze. Other terminations available at additional cost.

Weight 3.9 to 4.1 g

Ambient temperature –40°C to +85°C

Storage temperature Component: –40°C to +85°C.

Packaging: –40°C to +80°C

Resistance to soldering heat Max three 40 second reflows at

+260°C, parts cooled to room temperature between cycles

Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /

85% relative humidity)

Failures in Time (FIT) / Mean Time Between Failures (MTBF)

38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Packaging 250 per 13 reel Plastic tape: 32 mm wide,

0.5 mm thick, 20 mm pocket spacing, 11.2 mm pocket depth

PCB washing Only pure water or alcohol recommended

Dimensions are in

0.50

12,7

0.450

11,43

0.041

1,05

inductance

500 Vrms isolation from primary to bias

max (µH)

Leakage

max

0.566

0.685

0.945

max

0.600

15,24

0.413

10,50

Dot above pin1

inches

pri : sec : bias

max

Turns ratio

4 : 1 : 1

5 : 1 : 1

7 : 1 : 1

For Linear Technology LT3573

Isolated Flyback Converter

0.024

0.098

0,60

2,50

0.004 /0,10

Document 733 Revised 04/13/09

0.080

Ipk

(A)

2,03

2.1

voltage

20 – 28

10 – 14

Input

Recommended

(V)

Land Pattern

Document 733

0.460

11,68

3.3 V, 1.5 A

5.0 V, 1.0 A

3.3 V, 1.5 A

Output

0.050

0.098

1,27

2,50

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