INDUCTORS Inductors for power circuits Cl Pb Br Wound metal REACH Halogen Lead RoHS SVHC-Free Free Free SPM series SPM6550CT type FEATURES Magnetic shield type wound inductor for power circuits using a metallic magnetic material. Compared to ferrite wound type inductors, it is possible to achieve large current, low Rdc, and compactness. Low inductance variance in high-temperature environments with good DC superimposition characteristics. Metallic magnetic material is used, and the structure has an integrated molded coil, so hum noise is lower than with core adhesive coils. Compared with the conventional SPM series, it has a high Q characteristic in the high frequency region, so low loss can be realized in the high frequency region. APPLICATION Note PCs, HDDs, servers, VRMs, compact power supply modules, other PART NUMBER CONSTRUCTION SPM 6550 C T - R33 L LWH dimensions Inductance Inductance Series name Internal code Packaging style 7.16.55.0 mm (H) tolerance CHARACTERISTICS SPECIFICATION TABLE L Measuring DC resistance Part No. Rated current frequency Isat Itemp (H) Tolerance (kHz) (m )max. (m )typ. (A)typ. (A)typ. 0.33 +/-15% 100 2.86 2.60 25.2 17.0 SPM6550CT-R33L 0.50 +/-15% 100 4.29 3.90 20.4 13.2 SPM6550CT-R50L Rated current: smaller value of either Isat or Itemp. Isat: When based on the inductance change rate (20% below the initial value) Itemp: When based on the temperature increase (temperature increase of 40C by self heating) The cleaning agent can not be used for these products. Measurement equipment Measurement item Product No. Manufacturer L 4284A Keysight Technologies DC resistance AX-111A ADEX Rated current Isat 4284A+42841A+42842C Keysight Technologies Equivalent measurement equipment may be used. TEMPERATURE RANGE, INDIVIDUAL WEIGHT Operating temperature range Storage temperature range Individual weight 40 to +125 C 40 to +125 C 1.10 g Operating temperature range includes self-temperature rise. The storage temperature range is for after the assembly. Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use. (1/5) Please note that the contents may change without any prior notice due to reasons such as upgrading. 20181221 inductor commercial power spm6550ct en.fmINDUCTORS SPM6550CT type L FREQUENCY CHARACTERISTICS 6.0 4.0 R50 2.0 R33 0.0 0.01 0.1 1 10 100 ( ) Frequency MHz Measurement equipment Product No. Manufacturer 4294A Keysight Technologies Equivalent measurement equipment may be used. INDUCTANCE VS. DC BIAS CHARACTERISTICS 0.6 R50 0.5 0.4 R33 0.3 0.2 0.1 0.0 0 5 10152025 30 3540 DC current (A) Measurement equipment Product No. Manufacturer 4284A+42841A+42842C Keysight Technologies Equivalent measurement equipment may be used. Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use. (2/5) Please note that the contents may change without any prior notice due to reasons such as upgrading. 20181221 inductor commercial power spm6550ct en.fm ( ) Inductance (H) Inductance H