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RTMSS Cores (Super-MSS)

RTMSS type cores used in DTMSS cores

Chokes designed with the intention to replace iron powder cores in applications used in the frequency range of 25kHz - 500kHz with high stability of operating parameters maintained.

The main advantages of RTMSS cores include up to tenfold reduction of losses in the core and up to five times higher limit frequency with respect to metal-powder cores.

These cores offer lower losses and lower operating temperature of the choke (transformer). Therefore it is possible to achieve more power at the same choke size or reduce the size of the converter (operating at a higher frequency).

Applications:

  • power transformers (5kHz - 200kHz)
  • interference suppression chokes (DC - 300kHz)
  • energy storage chokes (DC - 300kHz)
  • AC and DC filters
  • flyback transformers
  • automotive ignition systems
  • EMI filters (DC - 1 MHz)

dławikiRTMSS

Super-MSS core dimensions [mm]
INDEX
A
B
C
material
AL
RTMSS-8x4x3 7,87 3,96 3,18
µ=75
31
RTMSS-10x5x4 10,16 5,08 3,96
µ=75
40
RTMSS-12,7x7,6x4,7 12,70 7,62 4,75
µ=75
34
RTMSS-16,5x10,1x6,3 16,64 10,16 6,35
µ=75
43
RTMSS-20,3x12,7x6,3 20,32 12,70 6,35
µ=75
41
RTMSS-23x14x8 22,86 13,97 7,62
µ=125
90
RTMSS-27x14x12 26,92 14,73 11,18
µ=60
75
RTMSS-27x14x12 26,92 14,73 11,18
µ=75
94
RTMSS-27x14x12 26,92 14,73 11,18
µ=125
157
RTMSS-33x19x11 33.02 19.94 10.67
µ=90
91
RTMSS-37x21x11 35.81 22.35 10.46
µ=60
56
RTMSS-40x24x15 39,88 24,13 14,48
µ=60
81
RTMSS-40x24x15 39,88 24,13 14,48
µ=75
101
RTMSS-47x23x18 46,74 24,13 18,03
µ=60
135
RTMSS-47x23x18 46,74 24,13 18,03
µ=75
169

Core Loss Curves

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Typical Incremental Permability vs. D.C. Bias

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Normal Magnetization Curves

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Permability vs. AC Flux Density

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Permability vs. Temperature

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Feryster company is official distributor of Micrometals Arnold Powder Cores. Besides of a MPP and HF core we offer for our customers Super-MSS core samples (see table below). Super-MSS is an improved Sendust material, originally developed by Arnold Engineering. It is designed to replace iron powder by offering much lower losses, with energy storage capability higher than MPP. Super-MSS cores are an excellent choice for energy storage and filter inductor applications in Switch Mode Power Supplies. The low loss properties of Super-MSS cores minimizes the temperature rise at power frequencies to well below that of a similar sized iron powder core. The DC Bias characteristics of Super-MSS are also excellent compared to iron powder of similar permeabilities and size.

The table below shows the Super-MSS sample list which Feryster Company has on its stock, in enough quantities for building prototype applications. They are available for all our customers. For all interested in Micrometals Arnold Powder Cores cores, we offer the newest free catalogs. Designers can download Micrometals Arnold Powder Coresoftware dedicated to design inductors based on Arnolds iron powder cores.
See also MPP and HF Micrometals Arnold Powder Cores.

CoreInitial
permeability
14
Initial
permeability
26
Initial
permeability
60
Initial
permeability
75
Initial
permeability
90
Initial
permeability
125
Outside diameter
SMSS 0.310¨ - - MS-031075
AL=31
---7.870mm
SMSS 0.400¨ - - MS-040075
AL=40
---10.16mm
SMSS 0.500¨ - - MS-050060
AL=27
MS-050075
AL=34
MS-050090
AL=40
MS-050125
AL=56
12.70mm
SMSS 0.655¨ - - MS-065060
AL=36
MS-065075
AL=43
MS-065090
AL=52
MS-065125
AL=72
16.64mm
SMSS 0.800¨ - MS-080026
AL=14
MS-080060
AL=32
MS-080075
AL=41
MS-080090
AL=49
MS-080125
AL=68
20.32mm
SMSS 0.900¨ - MS-090026
AL=19
MS-090060
AL=43
- MS-090090
AL=65
MS-090125
AL=90
22.86mm
SMSS 1.060¨ - MS-106026
AL=32
MS-106060
AL=75
MS-106075
AL=94
MS-106090
AL=113
MS-106125
AL=157
26.92mm
SMSS 1.300¨ - MS-130026
AL=28
MS-130060
AL=61
- MS-130090
AL=91
MS-130125
AL=127
33.02mm
SMSS 1.410¨ - MS-141026
AL=24
MS-141060
AL=56
- MS-141090
AL=84.3
MS-141125
AL=117
35.81mm
SMSS 1.570¨ - MS-157026
AL=35
MS-157060
AL=81
MS-157075
AL=101
-MS-157125
AL=168
39.88mm
SMSS 1.840¨MS-184014
AL=32
MS-184026
AL=59
MS-184060
AL=135
MS-184075
AL=169
--46.74mm
SMSS 2.000¨MS-200014
AL=17
MS-200026
AL=32
MS-200060
AL=73
- --50.80mm
SMSS 2.250¨MS-225014
AL=18
MS-225026
AL=33
MS-225060
AL=75
- --57.15mm
SMSS 2.250¨MS-226014
AL=32
MS-226026
AL=60
MS-226060
AL=138
- --57.15mm
SMSS 3.063¨MS-300014
AL=16
MS-300026
AL=30
MS-300060
AL=68
- --77.80mm
SMSS 4.000¨MS-400014
AL=25.6
MS-400026
AL=47.4
MS-400060
AL=112
- --101.60mm
SMSS 5.218¨MS-520014
AL=26
MS-520026
AL=54
MS-520060
AL=124
- --132.54mm
SMSS 5.218¨MS-521014
AL=36.4
-MS-521060
AL=156
- --132.54mm

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