Datasheet 3D Models

Isolation Transformers

Great News! More Choices!
See UA825x for a significantly smaller and lower profile solution (10 × 6.8 × 4.3 mm).

For increased creepage and clearance specification along with improved isolation rating, see ZA9801 (17.07 x 10.3 x 5.97 mm).

Optimized for Texas Instruments SN6501, ISO1176T/35T/3086T and Analog Devices ADM2482E/2485/2487E RS-485 Transceivers
Center tapped primary and secondary
AEC-Q200 Grade 1 (−40°C to +125°C)
Contact us for 8 mm creepage and clearance options.

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Count	Unit price
1	$3.20
300	$2.73
600	$2.38
1200	$1.86
2400	$1.59
5000	$1.46

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

Packaging

D = 13" machine-ready reel

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Typical Application

Works with Texas Instruments SN6501, ISO1176T/35T/3086T

Part number	Primary voltage	Secondary voltage	Power 1	Fsw
DA2304-AL_	3.3 V	6 V	7.2 W	500 kHz
DA2303-AL_	5 V	6 V	7.2 W	500 kHz

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
DA2304-AL_	17.8	0.086	0.232	0.43	1 : 2.2	21.5	2500
DA2303-AL_	45.6	0.130	0.260	1.00	1 : 1.5	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. DA2303-ALD
Inductance is tested between pins 4 and 3 at 500 kHz, 0.5 Vrms, 0 Adc.
DCR is per winding at 25°C. For other operating temperatures, use this use this DCR at Temperature calculator.
Leakage inductance is for the primary with both windings connected in series and with the secondary windings shorted.
Volt-time product is for the primary, between pins 4 and 1 with pins 2 and 3 connected.
2500 Vrms, one minute 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)
S = non-RoHS tin-lead (63/37). (Special order)

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:

0.94 – 1.0 g

Packaging:

600/13″ 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:

Three reflows at >217°C for 90 seconds (+260°C ±:5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

Isolation Transformers

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

Related product series

Transformers

ZA9801-AE Series