MSS1278T_15 Datasheet, PDF (1/2 Pages) Coilcraft lnc. – SMT Power Inductors

Document 598-1
HIGH ^TEMPERATURE
SMT Power Inductors – MSS1278T
• Designed for high ambient temperatures
• Magnetic shielding, very low DCR, excellent current handling
Designer’s Kit C419 contains 3 of each value
Core material Ferrite
Core and winding loss See www.coilcraft.com/coreloss
Terminations  RoHS compliant matte tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight:  3.8 g – 4.6 g
Ambient temperature  –40°C to +125°C with (40°C rise) Irms current.
Maximum part temperature  +165°C (ambient + temp rise). Derating.
Storage temperature  Component: –40°C to +165°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  500/13″ reel;  Plastic tape:  24 mm wide, 0.5 mm thick,
16 mm pocket spacing, 8.7 mm pocket depth
PCB washing  Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.


  _{Part number}1
  _{Inductanc e }2 ^   ^  ( m D OChRm³s )
(µH)
typ max
MSS1278T-102NL_    1.0 ±30% 6.3 7.0
MSS1278T-142NL_    1.4 ±30% 8.8 9.8
MSS1278T-222NL_    2.2 ±30% 9.4 10.5
MSS1278T-272NL_    2.7 ±30% 10.1 11.3
MSS1278T-392NL_    3.9 ±30% 11.7 13.0
MSS1278T-472ML_    4.7 ±20% 13.9 15.5
MSS1278T-562ML_    5.6 ±20% 15.7 17.5
MSS1278T-682ML_    6.8 ±20% 19.1 21.3
MSS1278T-822ML_    8.2 ±20% 20.3 22.6
MSS1278T-103ML_   10 ±20% 21.8 24.3
MSS1278T-123ML_   12 ±20%
MSS1278T-153ML_   15 ±20%
MSS1278T-183ML_   18 ±20%
MSS1278T-223ML_   22 ±20%
MSS1278T-273ML_   27 ±20%
23.2 25.8
27.9 31.0
30.8 34.3
35.5 39.5
45.0 50.0
MSS1278T-333ML_   33 ±20%
MSS1278T-393ML_   39 ±20%
MSS1278T-473ML_   47 ±20%
MSS1278T-563ML_   56 ±20%
MSS1278T-683ML_   68 ±20%
61.9 68.8
69.1 76.8
72.3 80.4
80.2 89.2
91.3 101.5
MSS1278T-823ML_   82 ±20%
MSS1278T-104ML_ 1 00 ±20%
MSS1278T-124KL_ 1 20 ±10%
MSS1278T-154KL_ 1 50 ±10%
MSS1278T-184KL_ 1 80 ±10%
125.9 139.9
135.1 150.2
182.3 202.6
216.5 240.6
229.0 254.5
MSS1278T-224KL_ 2 20 ±10%
MSS1278T-274KL_   270 ±10%
MSS1278T-334KL_   330 ±10%
MSS1278T-394KL_   390 ±10%
MSS1278T-474KL_   470 ±10%
323.6 359.6
415.6 461.8
487.3 541.5
533.6 592.9
707.5 786.2
MSS1278T-564KL_   560 ±10% 777.4 863.8
MSS1278T-684KL_   680 ±10% 1045 1162
MSS1278T-824KL_   820 ±10% 1166 1296
MSS1278T-105KL_ 1000 ±10% 1334 1482
SRF
  _{Isat (A)}5 _{   Irms (A)}6
  _typ4 _{10% 20% 30% 20°C 40°C}
(MHz) drop drop drop rise rise
115 31.84 35.04 36.84 7.1 10.1
85 25.04 27.76 29.52 6.8 9.8
60 22.56 24.80 25.96 6.3 9.2
40 18.76 20.72 22.04 6.1 8.6
35 16.52 18.24 19.20 5.7 7.7
33 15.30 16.90 17.76 4.3 6.2
30 13.38 14.86 15.74 4.3 6.2
23 12.10 13.56 14.20 4.2 6.0
20 11.38 12.60 13.28 4.1 5.9
17 10.62 11.82 12.48 4.0 5.7
15 8.90 9.88 10.44 3.7 5.2
13 8.36 9.32 9.94 3.5 4.9
12 8.00 8.88 9.36 3.0 4.5
11 7.08 7.88 8.34 2.9 4.0
10 6.32 7.08 7.54 2.6 3.6
9.5 5.96 6.56 6.98 2.3 3.1
8.5 5.38 5.94 6.28 2.1 3.0
7.5 4.76 5.40 5.66 2.0 2.9
7.0 4.40 4.98 5.30 1.9 2.7
6.5 3.92 4.46 4.74 1.8 2.6
5.0 3.66 4.08 4.38 1.6 2.3
4.5 3.12 3.56 3.78 1.5 2.2
4.3 3.02 3.36 3.58 1.4 1.9
4.1 2.60 2.94 3.10 1.3 1.8
4.0 2.36 2.68 2.84 1.2 1.7
3.4 2.24 2.50 2.62 1.0 1.6
3.1 1.94 2.18 2.34 0.90 1.2
2.9 1.72 1.92 2.06 0.80 1.0
2.7 1.62 1.82 1.92 0.75 1.0
2.2 1.44 1.64 1.74 0.66 0.90
2.0 1.40 1.54 1.66 0.60 0.80
1.7 1.24 1.32 1.46 0.55 0.75
1.4 1.14 1.28 1.42 0.50 0.70
1.3 0.982 1.08 1.18 0.48 0.68
1. Please specify termination and packaging codes:
MSS1278T-105KLD
Termination: L = RoHS compliant matte tin over
nickel over phos bronze.
Special order:
T = RoHS tin-silver-copper
(95.5/4/0.5) or S = non-RoHS
tin-lead (63/37).
Packaging: D = 13″ machine-ready reel. EIA-481
embossed plastic tape (500 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 tested at 100 kHz, 0.1 Vrms, 0 Adc using
an Agilent/HP 4263B LCR meter or equivalent.
3. DCR measured on a micro-ohmmeter and a
Coilcraft CCF858 test fixture.
4. SRF measured using an Agilent/HP 8753D network
analyzer and a Coilcraft SMD­‑D test fixture.
5. DC current at 25°C that causes the specified
inductance drop from its value without current.
Click for temperature derating information.
6. Current that causes the specified temperature
rise from 25°C ambient. This information is for
reference only and does not represent absolute
maximum ratings.
Click for temperature derating information.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount
Components” before soldering.
Document 598-1  Revised 09/03/15