Datasheet 3D Model

Isolation Transformer

Developed for use with ADI's ADM2482E and ADM2487E RS-485 Transceivers
Center tapped primary and secondary

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Count	Unit price
1	$4.84
300	$3.88
600	$2.34
1200	$1.83
2400	$1.56
5000	$1.44

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

Packaging

D = 13" machine-ready reel

. in stock, ready to ship today.

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Typical Application

Works with Analog Devices ADM2482E, ADM2487E

Input Voltage	Primary voltage	Secondary voltage	Power 1
5 V	5 V	3.3 V	7.2 W

Specifications

Electrical specifications at 25°C.

Part number 2 (Hover for schematics)	Inductance min (µH) 3	DCR max (Ω) 4		Leakage Inductance max (µH) 5	Turns Ratio	Volt-time product (V-µs) 6	Isolation Voltage (Vrms) 7
Part number 2 (Hover for schematics)	Inductance min (µH) 3	Pri	Sec	Leakage Inductance max (µH) 5	Pri : Sec	Volt-time product (V-µs) 6	Isolation Voltage (Vrms) 7
GA3157-AL_	45.6	0.260	0.310	1.14	1 : 0.88	34.4	2500

Notes

Calculated output power based on 150 kHz operating frequency. Power varies depending on application.
When ordering, please specify termination and packaging codes: e.g. GA3157-ALD
Inductance is tested between pins 4 and 3 at 500 kHz, 0.5 Vrms, 0 Adc.
DCR is for each half of the primary and secondary.
Leakage inductance is for the primary with both windings connected in series and with the secondary windings shorted.
Based on Bsat of the core at 25°C and number of turns on winding 4-3.
2500 Vrms primary to secondary isolation.

Termination:

L = RoHS compliant tin-silver over tin over nickel over phos bronze.
T = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost)
S = non-RoHS tin-lead (63/37). (Special order, added cost)

Packaging:

D = 13″ machine ready reel. EIA-481 embossed plastic tape (600 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

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
600	330	100	13	30,4	24,4	24	16	4	2	6,1	0,37

General specification

Core Material:

Ferrite

Weight:

1.0 g

Packaging:

600 per 13″ reel; Plastic tape: 24 mm wide, 0.37 mm thick, 16 mm pocket spacing, 6.1 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. More info.

Isolation Transformer

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

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