Product Overview
The CMM Series SMD Common Mode Choke, developed by Chilisin, offers excellent noise attenuation in a compact size. These chokes are designed for wide applications including USB 2.0, IEEE1394b, and LVDS interfaces. They are ideal for noise suppression in personal computer USB lines and peripherals, IEEE 1394 lines for personal computers, DVC, STB, and LVDS panel lines for liquid display panels and graphics cards. Chilisin welcomes inquiries for standard series or custom design services.
Product Attributes
- RoHS Compliant
- Miniature SMD type for automated assembly
- Wide Impedance range (30 ~ 2200)
- Excellent Solderability
- Operating temperature range: -25 to +105 (including self-temperature rise)
Technical Specifications
CMM Series - General Dimensions
| TYPE | Dimensions (mm) | D (mm) | E (mm) |
| A (mm) | B (mm) | C (mm) |
| 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 |
CMM Series - Recommended Pattern Dimensions
| TYPE | A (mm) | B (mm) | C (mm) | D (mm) |
| CMM21 | 0.50 | 1.20 | 0.80 | 2.60 |
| CMM31 | 0.40 | 1.60 | 1.60 | 3.70 |
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 | K | A | B | C | D |
| 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. Rdc (single line) tested with CH502BC/ HP4338B. Insulation Resistance tested with Agilent /HP4339B.
