®

© Coilcraft, Inc. 2012

1102 Silver Lake Road

Cary, IL 60013

Phone 800-981-0363

Fax 847-639-1508

Email cps@coilcraft.com

www.coilcraft-cps.com

This product may not be used in medical or high

risk applications without prior Coilcraft approval.

Specifications subject to change without notice.

Please check our web site for latest information.

Document ST833-2 Revised 11/07/12

ST512PJDSeriesCoupledInductors

6235 COUPLED InDUCtOrs

DCr

srF

Irms (A)

coefficient

L typ

10%

20%

30%

both

one

±20% (µH)

(Ohms)

(MHz)

typ

(µH)

drop

drop

drop

ST512PJD682MLZ

6.8

0.108

31

0.99

0.10

2.80

3.00

3.12

1.60

2.26

ST512PJD103MLZ

10

0.140

26

0.99

0.12

2.50

2.70

2.80

1.40

1.98

ST512PJD223MLZ

22

0.300

15

>0.99

0.15

1.50

1.67

1.73

0.85

1.20

ST512PJD473MLZ

47

0.620

9.7

>0.99

0.21

0.90

0.98

0.99

0.60

0.85

ST512PJD474MLZ

470

3.50

3.0

>0.99

0.61

0.18

0.22

0.23

0.25

0.35

ST512PJD105MLZ

1000

7.00

1.9

>0.99

1.05

0.12

0.14

0.15

0.15

0.21

ST512PJD155MLZ

1500

10.8

1.5

>0.99

1.70

0.10

0.12

0.13

0.14

0.20

ST512PJD205MLZ

2000

16.0

1.3

>0.99

2.10

0.08

0.11

0.12

0.11

0.16

temperature rise calculation based on specified Irms

1. When ordering, please specify

termination and testing code:

st512PJD105MLZ

termination:L = RoHS compliant silver-palladium-platinum-glass frit.

Special order:

t = RoHS tin-silver-copper (95.5/4/0.5)

or

s = non-RoHS tin-lead (63/37).

testing:

Z = COTS

H = Screening per Coilcraft CPSA-10001

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 the

value.

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 L1 and is measured with L2 shorted.

6. DC current, at which the inductance drops the specified amount 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 that causes

a 40°C temperature rise from 25°C ambient. See temperature rise

calculation.

8. Maximum current when applied to one winding that causes a 40°C

temperature rise from 25°C ambient. See temperature rise calculation.

9. Electrical specifications at 25°C.

Temperature rise = Winding power loss × 92.5°C

W

Winding power loss = (+

) × DCR in Watts (W)

II

L1

2

L2

2

Equal current in each winding (0.80 A):

Winding power loss = (0.80 + 0.80 ) × 0.30 = 0.384 W

Temperature rise = 0.384 W × 92.5°C

W

= 35.5°C

22

Unequal current (= 1.1 A,

= 0.45 A)

II

L1

L2

:

Winding power loss = (1.1 + 0.45 ) × 0.30 = 0.424 W

Temperature rise = 0.424 W × 92.5°C

W

= 39.2°C

22

Examples for ST512PJD223MLZ: