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Technical Data 10148

Effective June 2017

FP1208

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@25°C

2. Full Load Inductance (FLL) Test Parameters: 100kHz, 0.1Vrms, Isat1

3. Irms: 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.

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

5. Isat2: Peak current for approximately 20% rolloff @ 85°C

6. Isat3: Peak current for approximately 20% rolloff @ 125°C

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

* ∆I * 10-3. Bp-p:(Gauss), K: (K-factor from table), L: (Inductance in nH),

∆I (Peak to peak ripple current in Amps).

8. Part Number Definition: FP1208Rx-Rxx-R:

- FP1208= Product code and size

- Rx= DCR indicator

- Rxx= Inductance value in µH

- “-R” suffix = RoHS compliant

DCR measured from point “a” to point “b”

Part marking: 1208Rx (Rx= DCR indicator), Rxx = Inductance value in uH (R= decimal point) wwllyy= date

code, r= revision level

Tolerances are +/- 0.15 millimeters unless stated otherwise.

PCB tolerances are +/- 0.10 millimeters unless stated otherwise.

All soldering surfaces to be be coplanar within 0.1 millimeters.

Product Specifications

Part

DCR

(nH)±10%

(nH)

(Amps)

(Amps)

(Amps)

(Amps)

(m) @ 20°C

FP1208R1-R15-R

150

114

85

79

72

283

FP1208R1-R18-R

180

137

72

66

63

283

FP1208R1-R21-R

210

160

50

65

57

55

0.29±5%

283

FP1208R1-R23-R

230

176

61

53

50

283

FP1208R1-R25-R

250

191

55

48

44

283

Supplied in tape and reel packaging, 500 parts on a 13” diameter

reel.