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Specifications
Current Rating:
25mA
Inductance:
4.7uH
Tolerance:
±10%
Frequency - Self Resonant:
35MHz
Current - Saturation (Isat):
-
DC Resistance(DCR):
650mΩ
Ratings:
-
Q @ Frequency:
35@10MHz
Mfr. Part #:
CMI321609U4R7KT
Package:
1206
Key Attributes
Model Number:
CMI321609U4R7KT
Product Description
Multilayer Chip Ferrite Inductors - CMI3216 Series
Product Overview
The CMI3216 Series represents a line of Multilayer Chip Ferrite Inductors designed for various electronic applications. These inductors offer precise electrical characteristics and are built with high-quality materials, including a ferrite body and silver internal electrodes, plated with Ni/Sn for durability. They are suitable for applications requiring reliable inductance and current handling capabilities.
Product Attributes
- Product Type: Multilayer Chip Ferrite Inductors
- Series: CMI3216
- Body Material: Ferrite (Ni-Cu-Zn system)
- Internal Electrode Material: Pure Silver (Ag)
- Terminal Electrode Material: Silver Layer (Ag Layer) with Ni/Sn plating
- Packaging: Tape & Reel
- Certifications: RoHS compliant (if designated "Unitary lead free")
Technical Specifications
Dimensions & Inner Configuration
| Model Size | L (mm) | W (mm) | T (mm) | Terminal Electrode Thickness (mm) |
|---|---|---|---|---|
| 321609 | 3.2 0.20 (0.126 0.008) | 1.6 0.20 (0.063 0.008) | 0.9 0.20 (0.035 0.008) | 0.5 0.3 (0.020 0.012) |
| 321611 | 3.2 0.20 (0.126 0.008) | 1.6 0.20 (0.063 0.008) | 1.1 0.20 (0.043 0.008) | 0.5 0.3 (0.020 0.012) |
Product Model Composition
Example: CMI 321609 U 1R0 K T
- CMI: Multilayer Chip Ferrite Inductors
- 321609: Dimensions (LWT) (3.21.60.9mm)
- U: Material Code
- 1R0: Inductance (1.0H)
- K: Tolerance (10%)
- T: Packaging (Tape & Reel)
Electrical Characteristics List
| Part NO. | Tolerance (%) | Inductance (H) | Q Value (min) | RDC ()max | Test Frequency (MHz) | Test Voltage (mV) | SRF (MHz) min | Rated Current (mA)max |
|---|---|---|---|---|---|---|---|---|
| CMI321609V47NKT | 10 | 0.047 | 30 | 0.15 | 50 | 50 | 320 | 300 |
| CMI321609V56NKT | 10 | 0.056 | 30 | 0.20 | 50 | 50 | 320 | 300 |
| CMI321609V68NKT | 10 | 0.068 | 30 | 0.25 | 50 | 50 | 280 | 300 |
| CMI321609V82NKT | 10 | 0.082 | 30 | 0.25 | 50 | 50 | 280 | 300 |
| CMI321609VR10KT | 10 | 0.10 | 25 | 0.25 | 25 | 50 | 235 | 250 |
| CMI321609VR12KT | 10 | 0.12 | 25 | 0.25 | 25 | 50 | 220 | 250 |
| CMI321609VR15KT | 10 | 0.15 | 25 | 0.25 | 25 | 50 | 200 | 250 |
| CMI321609VR18KT | 10 | 0.18 | 25 | 0.30 | 25 | 50 | 185 | 250 |
| CMI321609VR22KT | 10 | 0.22 | 25 | 0.30 | 25 | 50 | 170 | 250 |
| CMI321609VR27KT | 10 | 0.27 | 25 | 0.30 | 25 | 50 | 150 | 250 |
| CMI321609VR33KT | 10 | 0.33 | 25 | 0.30 | 25 | 50 | 145 | 250 |
| CMI321609VR39KT | 10 | 0.39 | 30 | 0.50 | 25 | 50 | 135 | 200 |
| CMI321609VR47KT | 10 | 0.47 | 30 | 0.50 | 25 | 50 | 125 | 200 |
| CMI321609VR56KT | 10 | 0.56 | 30 | 0.50 | 25 | 50 | 115 | 150 |
| CMI321609VR68KT | 10 | 0.68 | 30 | 0.50 | 25 | 50 | 105 | 150 |
| CMI321609VR82KT | 10 | 0.82 | 30 | 0.60 | 25 | 50 | 100 | 150 |
| CMI321609U1R0KT | 10 | 1.0 | 35 | 0.30 | 10 | 50 | 75 | 100 |
| CMI321609U1R2KT | 10 | 1.2 | 35 | 0.40 | 10 | 50 | 65 | 100 |
| CMI321609U1R5KT | 10 | 1.5 | 35 | 0.40 | 10 | 50 | 60 | 50 |
| CMI321609U1R8KT | 10 | 1.8 | 35 | 0.40 | 10 | 50 | 55 | 50 |
| CMI321609U2R2KT | 10 | 2.2 | 35 | 0.50 | 10 | 50 | 50 | 50 |
| CMI321609U2R7KT | 10 | 2.7 | 35 | 0.50 | 10 | 50 | 45 | 50 |
| CMI321609U3R3KT | 10 | 3.3 | 35 | 0.50 | 10 | 50 | 41 | 50 |
| CMI321609U3R9KT | 10 | 3.9 | 35 | 0.60 | 10 | 50 | 38 | 50 |
| CMI321609U4R7KT | 10 | 4.7 | 35 | 0.65 | 10 | 50 | 35 | 25 |
| CMI321609U5R6KT | 10 | 5.6 | 35 | 0.80 | 4 | 50 | 32 | 25 |
| CMI321609X6R8KT | 10 | 6.8 | 35 | 0.80 | 4 | 50 | 29 | 25 |
| CMI321609X8R2KT | 10 | 8.2 | 35 | 0.80 | 4 | 50 | 26 | 25 |
| CMI321609X100KT | 10 | 10 | 35 | 0.80 | 2 | 50 | 24 | 25 |
| CMI321609X120KT | 10 | 12 | 35 | 0.90 | 2 | 50 | 22 | 15 |
| CMI321609J150KT | 10 | 15 | 30 | 1.00 | 1 | 50 | 19 | 5 |
| CMI321609J180KT | 10 | 18 | 30 | 1.00 | 1 | 50 | 18 | 5 |
| CMI321609J220KT | 10 | 22 | 30 | 1.20 | 1 | 50 | 16 | 5 |
| CMI321609J270KT | 10 | 27 | 30 | 1.20 | 1 | 50 | 14 | 5 |
| CMI321609J330KT | 10 | 33 | 30 | 1.30 | 1 | 50 | 13 | 5 |
| CMI321609J390KT | 10 | 39 | 30 | 1.30 | 1 | 50 | 13 | 5 |
| CMI321611J470KT | 10 | 47 | 30 | 1.60 | 1 | 50 | 12 | 5 |
| CMI321611J560MT | 20 | 56 | 30 | 1.80 | 1 | 50 | 12 | 5 |
| CMI321611J680MT | 20 | 68 | 30 | 2.00 | 1 | 50 | 11 | 5 |
| CMI321611J820MT | 20 | 82 | 30 | 2.40 | 1 | 50 | 11 | 5 |
| CMI321611J101MT | 20 | 100 | 30 | 3.00 | 1 | 50 | 8 | 5 |
Reliability Testing Items
| No. | Item | Requirements | Test Methods and Remarks |
|---|---|---|---|
| 1 | Operating Temperature Range | -40+85 | |
| 2 | Solder ability | At least 95% of terminal electrode should be covered with solder. | Preheating temperature: 120 to 150; Preheating time: 60s; Solder: 96.5%Sn/3.0%Ag/0.5%Cu; Solder temperature: 2455; Immersion tin depth: 10mm; Duration: 51s; Dip performance to a flux of about: 3 ~ 5 s |
| 3 | Resistance to Soldering | At least 95% of terminal electrode should be covered with solder. No mechanical damage. Inductance: V,U change within 20%; X change within 25%; J change within 30%. Q value change(ferrite): within 30% | Preheating temperature: 120 to 150; Preheating time: 60s; Solder: 96.5%Sn/3.0%Ag/0.5%Cu; Solder temperature: 2605; Immersion tin depth: 10mm; Duration: 101s; Dip performance to a flux of about: 3 ~ 5 s |
| 4 | Adhesion of electrode | The termination and body should be no damage. | Applied force: 10N for 3216 series. Keep time: 101S |
| 5 | Low temperature resistance | No mechanical damage. Inductance change: within 10%; Q value change(ferrite): within 30% | Temperature: -402; Testing time: 1000+24/-0 h |
| 6 | Bending strength | No mechanical damage. | Testing board: glass epoxy-resin substrate; For 0.5 mm/s compression speed, curvature: 2mm, hold time 20s1s |
| 7 | Vibration | No mechanical damage. Inductance change: within 10%; Q value change(ferrite): within 30% | Amplitude modulation: 1.5mm; Test time: A period of 2h in each of 3 mutually perpendicular directions. Frequency range: 10Hz to 55Hz to 10Hz for 1min. |
| 8 | High temperature resistance | No mechanical damage. Inductance change: within 10%; Q value change(ferrite): within 30% | Testing time: 1000+24/-0 h; Temperature: 852 |
| 9 | Static Humidity | No mechanical damage. Inductance change: within 10%; Q value change(ferrite): within 30% | Humidity: 90% to 95% RH; Temperature: 602; Testing time: 1000+24/-0 h |
| 10 | High temperature load | No mechanical damage. Inductance change: within 10%; Q value change(ferrite): within 30% | Impose current: at rated current; Testing time: 1000+24/-0 h; Temperature: 852 |
| 11 | Temperature Shock | No mechanical damage. Inductance change: within 10%; Q value change(ferrite): within 30% | Temperature: -40 for 303min +85 for 303min; Number of cycles: 32 |
Note: When there are questions concerning, measurement shall be made after 242hrs of recovery under the standard condition.
Packaging
| Size | Reel Quantity | Box Quantity | Case Quantity |
|---|---|---|---|
| 321611 | 3000 | 30000 | 180000 |
| 321609 | 4000 | 40000 | 240000 |
Recommended Soldering Conditions
- Reflow Soldering: Products can be applied to reflow soldering. Pre-heating should be in such a way that the temperature difference between solder and ferrite surface is limited to 150 max. Cooling into solvent after soldering should be limited to 100 max.
- Iron Soldering: Soldering Iron Temperature: 350 (Max); Power: 30W (Max); Soldering Time: < 5S (Take care not to apply the tip of the soldering iron to the terminal electrodes).
Cleaning Conditions
- Cleaning Temperature: 60 max
- Cleaning Time: 1 minute min.
- Ultrasonic output power: 200W max
Storage Requirements
- Storage Period: Within 1 year from the inspection date at the inductor company. If the period is exceeded, solder ability should be checked before use.
- Storage Conditions: Temperature: -10 to +40, Relative Humidity: 30% to 70%. Avoid storage in corrosive gases. Store on a palette to prevent influence from humidity and dust. Avoid heat shock, vibration, and direct sunlight. Products should be stored under airtight packaged condition.
Usage Of ODS (Ozone Depleting Substances)
The company does not use ODS such as CCl4 (carbon tetrachloride) and HCFC in the production process.
Notes
- If the product is designated "Unitary lead free", it indicates compliance with RoHS directive.
- This product specification guarantees the quality of our product as a single unit. Please ensure your product has been evaluated and confirmed against your specifications when our product is mounted.
- The company cannot warrant against failure caused by any use of our product that deviates from the intended use as described in this product specification.
2410121252_FH-CMI321609U4R7KT_C1049.pdf
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