2
Technical Data 4348
Effective July 2017
HCP0704
High current power inductors
www.eaton.com/electronics
Product Specifications
Dimensions (mm)
Do not route traces or vias underneath the inductor
1 Open Circuit Inductance (OCL) Test Parameters: 100 kHz, 0.10 Vrms, 0.0 Adc
2 Full Load Inductance (FLL) Test Parameters: 100 kHz, 0.1 Vrms,Isat1
3Irms: DC current for an approximate temperature rise of 40 °C without core loss. Derating
is necessary for AC currents. PCB pad layout, trace thickness and width, air-flow and proximity of other heat
generating components will affect the temperature rise. It is recommended the part temperature not exceed
+125 °C under worst case operating conditions verified in the end application.
4Isat: Peak current for approximately 20% rolloff at +25 °C.
5 K-factor: Used to determine Bp-p for core loss (see graph). Bp-p = K * L * ΔI : (Gauss), K: (K-factor
from table), L: (inductance in μH), ΔI (peak-to-peak ripple current in amps).
6 Part Number Definition: HCP0704-xxx-R
• HCP0704 = Product code and size
• xxx= Inductance value in μH, R = decimal point. If no “R” is present, then third
character = # of zeros
•“-R” suffix = RoHS compliant
Part Number6OCL1± 25% (μH) FLL2Min. (μH) Irms3 (A) Isat4 @ +25 °C (A) DCR (mΩ) @ +20 °C K-factor5
HCP0704-R40-R 0.40 0.28 17 27 3.2 ±10% 383.1
HCP0704-R60-R 0.60 0.42 14 21 4.5 ±10% 313.5
HCP0704-1R0-R 1.00 0.7 12 17 6.2 ±10% 265.3
HCP0704-1R8-R 1.80 1.26 8.5 13 11.0 ±10% 202.8
HCP0704-2R3-R 2.30 1.56 7.5 11.5 16.5 ±10% 164.2
HCP0704-3R3-R 3.30 2.31 6.0 9.5 25.0 ±10% 149.9
HCP0704-4R7-R 4.70 3.29 5.0 8.0 29.5 ±10% 127.7
Top View Bottom View Recommended Pad Layout Schematic
1
2
12
HCP0704
wwllyy R
6.80 Max
6.80 Max
3.3±0.3
HCP0704-R40 to 2R3= 1.20 +/- 0.2
HCP0704-3R3 to 4R7= 1.00 +/- 0.2
xxx
Side View
HCP0704-R40 to 1R0= 4.20 max
HCP0704-1R8 to 4R7= 4.00 max
7.60
2.50(2x)
4.00(2x)
21
Part Marking: HCP0704 xxx = Inductance value in μH. (R = Decimal point). If no “R” is present, then last character is # of zeros wwllyy = Date code R = Revision level
The nominal DCR test point is in the middle of the terminal
Packaging information (mm)
Supplied in tape and reel packaging, 1000 parts per 13” diameter reel.
User direction of feed
HCP0704-R40 to 1R0= 4.2
HCP0704-1R8 to 4R7= 4.0
Section A-A
1.5 Dia
min.
7.50
6.9
12.0
4.0
2.0
1.5 Dia.
+0.1/-0.0
A
A
1.75
7.5 16.0
±0.3
1
2
HCP0704
wwllyy R
xxx