2

Technical Data 4366

Effective June 2017

FP1206

High frequency, high current power inductors

www.eaton.com/electronics

Packaging information - mm

Dimensions- mm

1 Open Circuit Inductance (OCL) Test Parameters: 100kHz, 0.1Vrms, 0.0Adc

2 Full Load Inductance (FLL) Test Parameters: 100kHz, .01Vrms,Isat1

3Irms: DC current for an approximate temperature rise of 40°C without core loss. Derating is

necessary for AC currents. PCB layout, trace thickness and width, air-flow, and proximity of other

heat generating components will affect the temperature rise. It is recommended that the

temperature of the part not exceed 125°C under worst case operating conditions verified in the

end application.

4Isat1: Peak current for approximately 20% rolloff at +25°C.

5Isat2: Peak current for approximately 20% rolloff at +125°C.

6 K-factor: Used to determine Bp-p for core loss (see graph). Bp-p = K * L * ΔI * 10

(K-factor from table), L: (Inductance in nH),

ΔI (Peak-to-peak ripple current in amps).

7 Part Number Definition: FP1206Rx-Rxx-R

• FP1206 = Product code and size

• Rx= DCR indicator

• Rxx= Inductance value in uH, R = decimal point

• -R suffix = RoHS compliant

Product Specifications

Part

OCL

1

FLL

2

Irms

3

Isat1

4

Isat2

5

DCR (m

Ω)

Number

7

± 10% (nH)

Min. (nH)

(Amps)

(Amps) @25°C

(Amps) @125°C

@20°C

K-factor

6

FP1206R1-R12-R

120

86

88

65

358

FP1206R1-R15-R

150

108

70

51

358

FP1206R1-R25-R

250

180

50

43

32

0.43 ± 6.5%

358

FP1206R1-R30-R

300

216

34

26

358

FP1206R1-R40-R

400

288

24

19

358

T op V iew

Side View

Bottom View

Schem atic

1

2

7.5

R ecom m ended P ad Layout

4.5

2.5

2.8

± 0.2

2.0

± 0.2

7.7

typ.

a

6.0

max

11.7

± 0.3

7.7

± 0.3

1206R x

Rxx

wwllyy R

Rxx = Inductance value in

μH. (R = Decimal point).

wwllyy = Date code

R = Revision level

b

The nominal DCR is measured between points “a” and “b”

Part Marking: 1206Rx (Rx is the DCR indicator)

User direction of feed

S ection A -A

A

A

6.4

1.5 dia

1.5 dia

4.0

2.0

16.0

1.75

11.5

24.0

± 0.3

12.4

8.4

1206Rx

Rxx

wwllyy R

Supplied in tape-and-reel packaging, 620 parts per reel, 13” diameter reel.