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Transformers

for Analog Devices RS-485 Transceivers

RoHS compliant AEC-Q flag
  • Developed for use with Analog Devices ADM2482E, ADM2485 and ADM2487E
    RS-485 Transceivers
  • Center tapped primary and secondary
  • AEC-Q200 Grade 1 (−40°C to +125°C)
Buy Now:
Count Unit price
1 $3.01
300 $2.40
600 $2.09
1200 $1.63
2400 $1.40
5000 $1.28

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

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

Typical Application

Works with Analog Devices ADM248x

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 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
Pri Sec Pri : Sec
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
  1. Calculated output power based on 150 kHz operating frequency. Power varies depending on application.
  2. When ordering, please specify termination and packaging codes: e.g. DA2303-ALD
  3. Inductance is tested between pins 4 and 3 at 500 kHz, 0.5 Vrms, 0 Adc.
  4. DCR is per winding at 25°C. For other operating temperatures, use this use this DCR at Temperature calculator.
  5. Leakage inductance is for the primary with both windings connected in series and with the secondary windings shorted.
  6. Volt-time product is based on a flux density of 2500 gauss, measured between pins 4 and 1 with pins 2 and 3 connected.
  7. 2500 Vrms, one minute primary to secondary isolation.

Termination:

  • L = RoHS compliant tin-silver over tin over nickel over phos bronze.
  • = 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 parts per full reel).
  • B = Less than full reel
    In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter D instead.
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):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Schematics

da2303s.gif

Physical characteristics

da2303d.gif
dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.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_c.gif
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.

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