Document 961 -1 Shielded Power Inductors – MLC1770 • Soft saturation makes them ideal for VRD/VRM applications • Special materials eliminate all thermal aging issues. • Saturation current up to 64 Amps Part number1 Inductance2 ±20% (µH) MLC1770-801ME_ MLC1770-142ME_ MLC1770-202ME_ MLC1770-282ME_ 0.80 1.40 2.00 2.80 DCR (mOhm) typ max 1.15 1.80 2.70 3.60 4 Irms (A)5 SRF typ3 Isat (A) (MHz) 10% drop 20% drop 30% drop 20°C rise 40°C rise 1.30 2.00 3.00 4.00 1. When ordering, please specify termination and packaging codes: MLC1770-282MEC Termination: E = RoHS compliant tin-silver over copper Special order, added cost: T = RoHS tin-silvercopper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37). Packaging: D = 13″ machine-ready reel. EIA‑481 embossed plastic tape (400 parts per full reel). B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead. 2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using a Coilcraft SMD‑A fixture in an Agilent/HP 4263B LCR meter. 3. SRF measured using an Agilent/HP4291A impedance analyzer and an Agilent/HP 16193 fixture. 4. DC current at which the inductance drops the specified amount from its value without current. 5. Current that causes the specified temperature rise from 25°C ambient. 6. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 72 59 49 41 28.40 20.52 14.20 13.00 49.92 35.64 24.80 22.80 64.88 51.44 37.00 33.80 20.36 16.10 12.98 11.56 28.92 24.06 19.12 15.80 Core material Iron Core and winding loss Go to core loss calculator Environmental RoHS compliant, halogen free Weight 7.8 – 8.0 g Terminations RoHS compliant tin-silver (96.5/3.5) over copper. Other terminations available at additional cost. Ambient temperature –40°C to +85°C with Irms current Maximum part temperature: The part may be operated without damage as long its temperature (ambient + self-heating) does not exceed +125°C. Storage temperature Component: –40°C to +125°C. Tape and reel packaging: –40°C to +80°C Resistance to soldering heat Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 Packaging 400 per 13″ reel Plastic tape: 24 mm wide, 0.4 mm thick, 24 mm pocket spacing, 7.0 mm pocket depth PCB washing Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787_PCB_Washing.pdf. Document 961-1 Revised 06/03/15 Document 961-2 Shielded Power Inductors – MLC1770 L vs Current L vs Frequency 10 2.8 µH 2.0 µH Inductance (µH) Inductance (µH) 10 1.4 µH 1 0.1 0.80 µH 0.1 10 1 100 Part number MLC1770 –xxxME Internal code XXXX Y 0.661 16,8 max XXXX Y 1.4 µH 1 0.1 0.80 µH 0.01 1 10 Document 961-2 Revised 06/03/15 0.1 Frequency (MHz) Current (A) MLC1770 –xxxME 2.8 µH 2.0 µH Part Marking 0.642 16,3 max 0.276 7,0 max 0.165 4,2 0.116 2,95 0.248 6,3 0.165 4,2 0.232 5,9 0.248 6,3 Recommended Land Pattern Dimensions are in inches mm