SMT POWER INDUCTORS Flat Coils - PG0437NL Series Height: 4.5mm Max Footprint: 12.5mm x 11.0mm Max Peak Current Rating: up to 39A Frequency Range: 100kHz to 1MHz Ferrite Core: No thermal ageing, very low core losses Patent Pending Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C 1 Part 8 Number Inductance 2 @Irated (nH TYP) Irated 3 (A) PG0437.321NL 300 33 PG0437.401NL 362 28 Inductance @0A DC (nH ±20%) DCR (mΩ ±10%) 0.85 Saturation 4 Current Isat (A TYP) 25° 100° 320 39 33 400 31 28 Heating 5 Current I DC (A TYP) Core Loss 6 Factor K2 43.5 54.3 38 PG0437.451NL 390 26 450 28 26 61.2 PG0437.601NL 530 18 600 21 18 81.5 Mechanical .492 MAX 12,50 a .433 11,00 MAX .177 ± .005 4,50 ± 0,12 XXXNL Date Code .327 ± .005 8,30 ± 0,12 b PATENT PENDING .177 ± .005 4,50 ± 0,12 SUGGESTED PAD LAYOUT .177 4,50 MAX Weight......................2.3 grams Tape & Reel ................750/reel Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .010 0,25 TAPE & REEL LAYOUT .945 24,00 .453 11,50 USER DIRECTION OF FEED Schematic .480 12,20 .630 16,00 .441 11,20 .189 4,80 1 2 USA 858 674 8100 • Germany 49 7032 7806 0 • Singapore 65 6287 8998 • Shanghai 86 21 54643211 / 2 • China 86 755 33966678 • Taiwan 886 3 4641811 www.pulseeng.com 58 SPM2007 (11/07) SMT POWER INDUCTORS Flat Coils - PG0437NL Series Notes from Tables 1. The temperature of the component (ambient plus temperature rise) must be within the specified operating temperature range. 2. Inductance at Irated is a typical inductance value for the component taken at rated current. 3. The rated current listed is the lower of the saturation current @ 25°C, 100°C, or the heating current. 4. The saturation current, I SAT , is the current at which the component inductance drops by 20% (typical) at an ambient temperature of 25°C and 100°C. This current is determined by placing the component in the specified ambient environment and applying a short duration pulse current (to eliminate self-heating effects) to the component. 5. The heating current, IDC, is the DC current required to raise the component temperature by approximately 40°C. The heating current is determined by mounting the component on a typical PCB and applying current for 30 minutes. The temperature is measured by placing the thermocouple on top of the unit under test. Take note that the component’s performance varies depending on the system condition. It is suggested that the component be tested at the system level, to verify the temperature rise of the component during system operation. 6. Core loss approximation is based on published core data: Core Loss = K1 * (f)1.12 * (K2ΔI)2.17 Where: Core Loss = in Watts K1= 8.74E-11 f = switching frequency in kHz K1 & K2 = core loss factors ΔI = delta I across the component in Ampere ΔI = one half of the peak to peak flux density K2Δ across the component in Gauss 7. Unless otherwise specified, all testing is made at 100kHz, 0.1VAC. 8. Optional Tape & Reel packaging can be ordered by adding a "T" suffix to the part number (i.e. PG0437.401NL becomes PG0437.401NLT). Pulse complies to industry standard tape and reel specification EIA481. Typical Inductance vs DC Bias @ 25°C 600 500 400 PG0437.601NL PG0437.451NL PG0437.401NL 300 PG0437.321NL 200 100 0 0 @ 100°C 700 INDUCTANCE (nH) INDUCTANCE (nH) 700 600 500 400 PG0437.601NL PG0437.451NL PG0437.401NL 300 PG0437.321NL 200 100 10 20 30 40 50 0 60 0 10 20 DC BIAS (A) 30 40 50 60 DC BIAS (A) Typical Core Loss vs Peak Flux Density 1.60 1.40 CoreLoss (W) 1.20 500 kHz 1.0 MHz 1.00 300 kHz 400 kHz 200 kHz 0.80 0.60 0.40 100 kHz 0.20 0.00 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 DB (Gauss) where DB = K2DI USA 858 674 8100 • Germany 49 7032 7806 0 • Singapore 65 6287 8998 • Shanghai 86 21 54643211 / 2 • China 86 755 33966678 • Taiwan 886 3 4641811 www.pulseeng.com 59 SPM2007 (11/07)