3D Model Datasheet

GA3291-AL Forward Converter Transformer

for Akros AS1130 PoE Controller

Developed for Akros Silicon AS1130, 30 W PoE Controller
Designed for forward topology operating at 350 kHz
Input filter inductor: DO1608C-103
Output filter inductor: MSS1278-683

Buy Now:

Count	Unit price
1	$3.45
175	$3.07
700	$2.55
1400	$2.15
2800	$1.92
5000	$1.76

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

Packaging

D = 13" machine-ready reel

. in stock, ready to ship today.

Request a Sample:

Typical Application

Works with Akros Silicon AS1130

Input Voltage	Output		Power	Fsw
Input Voltage	Sec	Aux	Power	Fsw
36 V — 57 V	12 V , 2.5 A	16 V , 0.02 A	30 W	300 kHz

Specifications

Electrical specifications at 25°C.

Part number 1 (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±25%)	DCR max (Ω) 3		Leakage Inductance max (µH) 4	Turns Ratio 5	Isolation Voltage (Vrms) 6
Part number 1 (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±25%)	Pri	Sec	Leakage Inductance max (µH) 4	Pri : Sec	Isolation Voltage (Vrms) 6
GA3291-AL_	203	0.065	0.031	0.215	1 : 0.923	1500

Notes

When ordering, please specify a packaging code: GA3291-ALD.
Inductance is measured at 300 kHz, 0.6 Vrms, 0 Adc.
DCR for the primary is measured from pin 1 to pin 3.
Leakage inductance is for the primary (pin 1 to pin 3) and is measured with the secondary shorted.
Turns ratio is based on the entire the primary winding (pin 1 to pin 3).
1500 Vrms isolation from primary to secondary.

Termination:

RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations. Other terminations available at additional cost.

Packaging:

D = 13″ machine ready reel. EIA-481 embossed plastic tape (175 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 +125°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):

See FIT/MTBF Calculations

Schematics

Primary is pin 1 to pin 3.
Terminal 2 is for internal connection only.
Do not connect terminal 2 to ground or any circuitry.

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
175	330	100	13	50,4	44,4	44	28	4	2	11,9	0,4

General specification

Core Material:

Ferrite

Weight:

10.7 g

Packaging:

175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 32 mm pocket spacing, 11.9 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.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787_PCB_Washing.pdf.

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GA3291-AL Forward Converter Transformer

for Akros AS1130 PoE Controller

Selected configuration not available

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

Warning