Document 852

Coupled Inductor – JA4590-AL• Developed for Texas Instruments TPS40210 Current Mode
Boost Controller.
• 1 : 1 coupled inductor with a coupling coefficient >0.95.
• Can be used as a transformer or as an inductor in SEPICand Zeta applications.
Core material FerriteTerminations RoHS compliant matte tin over nickel over phos bronze.
Weight 10.8 g
Ambient temperature –40°C to +85°C with Irms current, +85°C to+125°C with derated current
Storage temperature Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Winding to winding isolation 500 Vrms
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)
Packaging 175/13″ reel; Plastic tape: 32 mm wide, 0.5 mm thick,
24 mm pocket spacing, 14.3 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additionalaqueous wash. See Doc787_PCB_Washing.pdf.					PartInductance2
DCR max3	 SRF typ4
number1±10% (µH)(Ohms)(MHz)
JA4590-AL_22

0.028

8.0	           Irms (A)Leakageinductance5	 Isat6
bothonemax (µH)(A)
windings7
winding8

0.30

7.8

4.20

5.94

1. When ordering, please specify packaging code:
JA4590-ALD
D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (175 parts per full reel). Quantities less thanfull reel available: in tape (not machine ready) orwith leader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our partnumbering system, Coilcraft is eliminating the needfor multiple packaging codes. When ordering, simply
change the last letter of your part number from B to D.
2. Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms,0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads
are connected in parallel, inductance is the same value. When leads
are connected in series, inductance is four times the value.
3. DCR is for each winding. When leads are connected in parallel, DCR
is half the value. When leads are connected in series, DCR is twice thevalue.
4. SRF measured using an Agilent/HP 4191A or equivalent. When leads
are connected in parallel, SRF is the same value.
5. Leakage inductance is for one winding.
6. DC current, at which the inductance drops 20% (typ) from its value
without current. It is the sum of the current flowing in both windings.
7. Equal current when applied to each winding simultaneously thatcauses a 40°C temperature rise from 25°C ambient.
8. Maximum current when applied to one winding that causes a 40°C
temperature rise from 25°C ambient.
Refer to Doc 639 “Selecting Coupled Inductors for SEPIC Applications.”
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Packaging:Dimensions are ininchesmmUS +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg

Document 852-1

Revised 12/21/21© Coilcraft Inc. 2021
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.