Product Overview
The CMM Series SMD Common Mode Choke, developed by Chilisin, offers excellent noise attenuation in a compact SMD package. Designed for automated assembly, these chokes are ideal for a wide range of applications including USB 2.0, IEEE1394b, and LVDS interfaces. They provide effective noise suppression across a broad impedance range (30 ~ 2200) and feature excellent solderability. Applications include USB lines for personal computers and peripherals, IEEE 1394 lines for personal computers, DVC, STB, LVDS, and panel lines for liquid display panels and graphics cards.
Product Attributes
- RoHS Compliant
- Miniature SMD type
- Wide Impedance range (30 ~ 2200)
- Excellent Solderability
- Operating temperature range: -25 to 105 (Including self-temperature rise)
Technical Specifications
CMM Series Dimensions and Recommended Pattern
| TYPE | Shapes and Dimensions (mm) | Recommended Pattern Dimensions (mm) |
| A | B | C | D | E |
| CMM21 | 2.050.2 | 1.250.2 | 1.200.2 | 0.50 | 0.58 |
| CMM31 | 3.200.2 | 1.600.2 | 1.900.2 | 0.60 | 0.60 |
CMM21 Series Electrical Characteristics
| Part Number | Impedance () | Test Frequency (MHz) | Tolerance (%) | Idc (mA) | Max Rated Voltage (Vdc) | Rdc () Max | Insulation Resistance (M) Min |
| CMM21T-300M-N | 30 | 100 | 20 | 450 | 120 | 0.20 | 10 |
| CMM21T-670M-N | 67 | 100 | 20 | 400 | 120 | 0.25 | 10 |
| CMM21T-900M-N | 90 | 100 | 20 | 330 | 120 | 0.35 | 10 |
| CMM21T-121M-N | 120 | 100 | 20 | 370 | 120 | 0.30 | 10 |
| CMM21T-161M-N | 160 | 100 | 20 | 350 | 120 | 0.35 | 10 |
| CMM21T-181M-N | 180 | 100 | 20 | 330 | 120 | 0.35 | 10 |
| CMM21T-201M-N | 200 | 100 | 20 | 330 | 120 | 0.35 | 10 |
| CMM21T-221M-N | 220 | 100 | 20 | 310 | 120 | 0.35 | 10 |
| CMM21T-261M-N | 260 | 100 | 20 | 300 | 120 | 0.40 | 10 |
| CMM21T-301M-N | 300 | 100 | 20 | 290 | 120 | 0.40 | 10 |
| CMM21T-361M-N | 360 | 100 | 20 | 280 | 120 | 0.45 | 10 |
| CMM21T-371M-N | 370 | 100 | 20 | 280 | 120 | 0.45 | 10 |
| CMM21T-501M-N | 500 | 100 | 20 | 170 | 120 | 0.55 | 10 |
| CMM21T-671M-N | 670 | 100 | 20 | 140 | 120 | 0.60 | 10 |
| CMM21T-901M-N | 900 | 100 | 20 | 80 | 120 | 0.60 | 10 |
CMM31 Series Electrical Characteristics
| Part Number | Impedance () | Test Frequency (MHz) | Tolerance (%) | Idc (mA) | Max Rated Voltage (Vdc) | Rdc () Max | Insulation Resistance (M) Min |
| CMM31T-900M-N | 90 | 100 | 20 | 370 | 50 | 0.3 | 10 |
| CMM31T-161M-N | 160 | 100 | 20 | 340 | 50 | 0.4 | 10 |
| CMM31T-221M-N | 220 | 100 | 20 | 320 | 50 | 0.4 | 10 |
| CMM31T-261M-N | 260 | 100 | 20 | 310 | 50 | 0.5 | 10 |
| CMM31T-601M-N | 600 | 100 | 20 | 260 | 50 | 0.8 | 10 |
| CMM31T-102M-N | 1000 | 100 | 20 | 230 | 50 | 1.0 | 10 |
| CMM31T-222M-N | 2200 | 100 | 20 | 200 | 50 | 1.2 | 10 |
Packaging Specifications
| TYPE | Tape Dimensions (mm) | Reel Dimensions (mm) | Quantity PCS / Reel |
| A | B | T | W | P | F | A | B | C | D | Quantity |
| CMM21 | 1.50 | 2.25 | 0.24 | 8 | 4 | 3.5 | 1.45 | 178 | 60 | 12 | 1.5 | 2000 |
| CMM31 | 1.76 | 3.47 | 0.22 | 8 | 4 | 3.5 | 2.05 | 178 | 60 | 12 | 1.5 | 2000 |
Note: Tolerance: M = 20%. Packaging: Clear tape and reel {standard}. Test Instruments: HP4291A Material/Impedance Analyzer.
