Unshielded DIP Power Inductors - SPK Series
Product Overview
The SPK Series Unshielded DIP Power Inductors are designed for spike suppression and general-purpose power applications. They offer a low-cost solution with high power handling, high saturation, and low resistance. The core is encapsulated in UL heat shrink tubing for enhanced mechanical and environmental protection. Available in various package sizes and inductance ranges, these inductors are suitable for automated insertion processes and comply with RoHS, Halogen Free, and REACH standards. They are ideal for use in consumer electronics, telecommunication devices, and power conversion circuits.
Product Attributes
- Brand: SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD.
- Series: SPK
- Type: Unshielded DIP Power Inductor / Spike suppression coil
- Certifications: RoHS, Halogen Free, REACH Compliance
- Packaging Options: Tape packaging for auto-insertion, Bulk Package
Applications
- TVs and Audio equipment
- Telecommunication devices
- Noise filters
- Chargers, fast charge
- DC/DC converters
Environmental Data
- Operating Temperature: -40 to +125 (Including coil self-temperature rise)
Technical Specifications
Product Identification: SPK 0608 503 K TF
Inductance Tolerance Options: J: 5%, K: 10%, L: 15%, M: 20%, P: 25%, N: 30%
Shape and Dimensions
| Part No | A (Max) | B (Min) | C () | D (Max) | E () | F | H |
| SPK0406 | 8.0 mm | 15.0 mm | 2.0 mm | 5.0 mm | 0.55 mm | 0.85 | 2.0 |
| SPK0608 | 11.0 mm | 15.0 mm | 2.5 mm | 7.0 mm | 0.65 mm | 0.95 | 2.5 |
| SPK0707 | 9.5 mm | 15.0 mm | 5.0 mm | 8.0 mm | 0.65 mm | 0.95 | 5.0 |
| SPK0807 | 9.5 mm | 15.0 mm | 5.0 mm | 9.0 mm | 0.65 mm | 0.95 | 5.0 |
| SPK0810 | 13.0 mm | 15.0 mm | 5.0 mm | 9.0 mm | 0.65 mm | 0.95 | 5.0 |
| SPK0912 | 15.0 mm | 15.0 mm | 5.0 mm | 10.0 mm | 0.80 mm | 1.1 | 5.0 |
| SPK1010 | 13.0 mm | 15.0 mm | 5.0 mm | 12.0 mm | 0.80 mm | 1.1 | 5.0 |
| SPK1012 | 15.0 mm | 15.0 mm | 6.0 mm | 12.0 mm | 0.80 mm | 1.1 | 6.0 |
| SPK1016 | 19.0 mm | 15.0 mm | 6.0 mm | 12.0 mm | 0.80 mm | 1.1 | 6.0 |
| SPK1018 | 21.0 mm | 15.0 mm | 6.0 mm | 12.0 mm | 0.80 mm | 1.1 | 6.0 |
| SPK1213 | 16.0 mm | 15.0 mm | 7.5 mm | 14.0 mm | 0.80 mm | 1.1 | 7.5 |
Electrical Characteristics (Sample Data for SPK0406 Series)
| Part No | Inductance L (H) | Tolerance | Q Min @1KHz | Test Freq. (MHz) | SRF Min (MHz) | DCR Max () | Rated Current Max (mA) |
| SPK0406-1R0M- | 1.0 | M | 100 | 7.96 | 120 | 0.035 | 2000 |
| SPK0406-1R2M- | 1.2 | M | 100 | 7.96 | 120 | 0.058 | 1950 |
| SPK0406-100M- | 10 | M | 80 | 2.52 | 20 | 0.230 | 1000 |
| SPK0406-1000M- | 1000 | M | 45 | 0.796 | 6.0 | 1.000 | 400 |
| SPK0406-1002K- | 10000 | K | 45 | 0.0796 | 72.000 | 0.47 | 47 |
Electrical Characteristics (Sample Data for SPK0608 Series)
| Part No | Inductance L (H) | Tolerance | Q Min @1KHz | Test Freq. (MHz) | SRF Min (MHz) | DCR Max () | Rated Current Max (mA) |
| SPK0608-3R3M- | 3.3 | M | 20 | 7.96 | 40.0 | 0.016 | 3500 |
| SPK0608-100M- | 10 | M | 30 | 2.52 | 23.0 | 0.039 | 2000 |
| SPK0608-1000M- | 1000 | M | 100 | 0.252 | 2.1 | 3.200 | 200 |
| SPK0608-1003M- | 30000 | M | 50 | 0.0796 | 91.500 | 0.985 | 35 |
Electrical Characteristics (Sample Data for SPK0707 Series)
| Part No | Inductance L (H) | Tolerance | Q Min @1KHz | Test Freq. (MHz) | SRF Min (MHz) | DCR Max () | Saturation Current Max (mA) | Temperature Rise Current Max (mA) |
| SPK0707-1R0M- | 1.0 | M | 10 | 7.96 | 70 | 0.006 | 6600 | 5000 |
| SPK0707-100M- | 10 | M | 20 | 2.52 | 19 | 0.043 | 2100 | 1900 |
| SPK0707-1000M- | 1000 | M | 70 | 0.252 | 1.3 | 4.300 | 200 | 190 |
Electrical Characteristics (Sample Data for SPK0807 Series)
| Part No | Inductance L (H) | Tolerance | Q Min @1KHz | Test Freq. (MHz) | SRF Min (MHz) | DCR Max () | Saturation Current Max (mA) | Temperature Rise Current Max (mA) |
| SPK0807-2R2M- | 2.2 | M | 10 | 7.96 | 60 | 0.011 | 5500 | 4000 |
| SPK0807-100M- | 10 | M | 20 | 2.52 | 19 | 0.031 | 2500 | 2200 |
| SPK0807-1000K- | 1000 | K | 20 | 0.252 | 1.5 | 2.200 | 260 | 230 |
Electrical Characteristics (Sample Data for SPK0810 Series)
| Part No | Inductance L (H) | Tolerance | Q Min @1KHz | Test Freq. (MHz) | SRF Min (MHz) | DCR Max () | Rated Current Max (mA) |
| SPK0810-3R3M- | 3.3 | M | 30 | 7.96 | 65 | 0.012 | 5000 |
| SPK0810-100M- | 10 | M | 50 | 2.52 | 17 | 0.025 | 3200 |
| SPK0810-1000M- | 1000 | M | 40 | 0.252 | 1.5 | 1.800 | 280 |
| SPK0810-1003M- | 33000 | M | 60 | 0.0796 | 0.20 | 75.000 | 50 |
Electrical Characteristics (Sample Data for SPK0912 Series)
| Part No | Inductance L (H) | Tolerance | DCR Max () | Rated Current Max (mA) |
| SPK0912-1R0M- | 1.0 | M | 0.011 | 6000 |
| SPK0912-100M- | 10 | M | 0.040 | 4000 |
| SPK0912-1000M- | 1000 | M | 2.000 | 200 |
| SPK0912-1003M- | 33000 | M | 45.00 | 40 |
Electrical Characteristics (Sample Data for SPK1010 Series)
| Part No | Inductance L (H) | Tolerance | Q Min @1KHz | Test Freq. (MHz) | SRF Min (MHz) | DCR Max () | Saturation Current Max (mA) | Temperature Rise Current Max (mA) |
| SPK1010-3R3M- | 3.3 | M | 10 | 7.96 | 36 | 0.010 | 8800 | 5900 |
| SPK1010-100M- | 10 | M | 20 | 2.52 | 16 | 0.025 | 5000 | 3700 |
| SPK1010-1000M- | 1000 | M | 20 | 0.252 | 1.1 | 1.400 | 510 | 500 |
| SPK1010-1003K- | 15000 | K | 50 | 0.0796 | 0.29 | 24.000 | 130 | 120 |
Electrical Characteristics (Sample Data for SPK1012 Series)
| Part No | Inductance L (H) | Tolerance | Q Min @1KHz | Test Freq. (MHz) | SRF Min (MHz) | DCR Max () | Saturation Current Max (mA) | Temperature Rise Current Max (mA) |
| SPK1012-3R3M- | 3.3 | M | 90 | 7.96 | 59.00 | 0.025 | 5500 | 5500 |
| SPK1012-100M- | 10 | M | 100 | 2.52 | 26.00 | 0.050 | 4200 | 4200 |
| SPK1012-1000K- | 1000 | K | 40 | 0.252 | 1.60 | 1.400 | 300 | 300 |
| SPK1012-10000K- | 10000 | K | 80 | 0.0796 | 0.35 | 12.000 | 180 | 170 |
Electrical Characteristics (Sample Data for SPK1016 Series)
| Part No | Inductance L (H) | Tolerance | DCR Max () | Saturation Current Max (mA) | Temperature Rise Current Max (mA) |
| SPK1016-4R7M- | 4.7 | M | 0.020 | 8500 | 5800 |
| SPK1016-100M- | 10 | M | 0.035 | 7600 | 5000 |
| SPK1016-1000K- | 1000 | K | 1.200 | 700 | 700 |
Electrical Characteristics (Sample Data for SPK1018 Series)
| Part No | Inductance L (H) | Tolerance | DCR Max () | Saturation Current Max (mA) | Temperature Rise Current Max (mA) |
| SPK1018-4R7K- | 4.7 | K | 0.008 | 10000 | 6000 |
| SPK1018-100K- | 10 | K | 0.017 | 7000 | 4500 |
| SPK1018-1000K- | 1000 | K | 0.844 | 660 | 660 |
| SPK1018-10000K- | 10000 | K | 7.3000 | 220 | 220 |
Electrical Characteristics (Sample Data for SPK1213 Series)
| Part No | Inductance L (H) | Tolerance | DCR Max () | Saturation Current Max (mA) | Temperature Rise Current Max (mA) |
| SPK1213-100M- | 10 | M | 0.023 | 8000 | 5100 |
| SPK1213-1000K- | 1000 | K | 1.000 | 780 | 780 |
| SPK1213-10000K- | 10000 | K | 10.000 | 240 | 240 |
Packaging
| Part No. | PE Bag Quantity |
| SPK0406 | 1000 PCS |
| SPK0608 | 1000 PCS |
| SPK0707 | 1000 PCS |
| SPK0807 | 1000 PCS |
| SPK0810 | 500 PCS |
| SPK0912 | 300 PCS |
| SPK1010 | 200 PCS |
| SPK1012 | 200 PCS |
| SPK1016 | 200 PCS |
| SPK1018 | 200 PCS |
| SPK1213 | 200 PCS |
Reliability Testing
| Item | Requirements | Test Methods and Remarks |
| Terminal Strength (SMT) | Meet requirements without any loose terminal. | Pulling test: Define: A: sectional area of terminal A8mm2 force5N time:30sec; 8mm2<A20mm2 force 10N time: 10sec; 20mm2<A force 20N time: 10sec. Solder paste thickness:0.12mm. Solder the inductor to the testing jig using leadfree solder. Then apply a force in the Keep time: 101s Speed: 1.0mm/s. |
| Terminal Strength (DIP) | Meet requirements without any loose terminal. | Pull Force: applied gradually to the terminal and maintained for 10 seconds. Terminal diameter(d) mm: 0.35d 0.50 Applied force:5N Duration: 10sec; 0.50d 0.80 Applied force:10N Duration: 10sec; 0.80d 1.25 Applied force:20N Duration: 10sec; D 1.25 Applied force:40N Duration: 10sec. |
| Resistance to Flexure | No visible mechanical damage. | Flexure: 2mm. Pressurizing Speed: 0.5mm/sec. Keep time: 30 sec. Solder the inductor to the test jig (glass epoxy board) using a leadfree solder. Then apply a force in the direction shown. |
| Dropping | No case deformation or change in appearance. No short and no open. | Drop the packaged products from 1m high in 1 angle, 3 ridges and 6 surfaces, twice in each direction. |
| Solderability | Terminals must have 95% minimum solder coverage. Wetting shall exceed 75% coverage. No visible mechanical damage. | Solder temperature: 2402. Duration: 3 sec. Solder: Sn/3.0Ag/0.5Cu. Flux: 25% Resin and 75% ethanol in weight. |
| Vibration | Inductance change: Within 10%. Q factor change: Within 20%. No visible mechanical damage. | Subjected to simple harmonic motion, frequency 10 to 55 Hz and return to 10 Hz in approx. 1 minute. Applied for 2 hours in each of 3 mutually perpendicular directions (total 6 hours). Solder the inductor to the testing jig (glass epoxy board) using leadfree solder. |
| Thermal Shock | Inductance change: Within 10%. Q factor change: Within 20%. No visible mechanical damage. | 100 cycles of temperature change from (85~125) for T time to (-55~40) for T time. Transforming interval: Max. 20 sec. Stabilize at normal condition for 1-2 hours before measuring. |
| Low temperature Storage | Inductance change: Within 10%. Q factor change: Within 20%. No visible mechanical damage. | Temperature: -55~-402. Duration: 962 hours. Stabilize at normal condition for 1-2 hours before measuring. |
| High temperature Storage | Inductance change: Within 10%. Q factor change: Within 20%. No visible mechanical damage. | Temperature: 125~852. Duration: 962 hours. Stabilize at normal condition for 1-2 hours before measuring. |
| Damp Heat (Steady States) | Inductance change: Within 10%. Q factor change: Within 20%. No visible mechanical damage. | Temperature: 602. Humidity: 90% to 95% RH. Duration: 962 hours. Stabilize at normal condition for 1-2 hours before measuring. |
| Heat endurance of Reflow soldering | L/L10%. Q/Q30% (SMD series only). DCR/DCR10%. No significant defects in appearance. | Peak temperature: 260+0/-5. Go through reflow twice. |
| Resistance to solvent test | No case deformation or change in appearance or obliteration of marking. | Dip parts into IPA solvent for 50.5Min, then dry at room temp for 5Min, then brushing making 10 times. |
| Overload test | During the test no smoke, no peculiar smell, no fire. The characteristic is normal after test. | Apply twice rated current for 5 minutes. |
| Voltage resistance test | During the test no breakdown. The characteristic is normal after test. | DC1000V, Current: 1mA, Time: 1Min. For parts with two coils. |
Recommended Lead-free Wave Soldering Curve (DIP-TYP)
The recommended reflow conditions are set according to our soldering equipment. Users should adjust and confirm according to their specific environment/equipment.
Reminders for Using These Products
- Storage: Within 12 months, under conditions of 5~40C and 35~65% RH. Terminal electrode solderability may deteriorate if storage period is exceeded.
- Environment: Do not use or store in corrosive gas environments (salt, acid, alkali, etc.).
- Handling: Avoid direct contact with terminals with bare hands to prevent reduced solderability due to oil secretions. Handle products carefully to prevent damage from dropping or improper removal.
- Bending: Do not bend terminals with excessive stress to avoid wire fracture.
- Cleaning: Do not rinse coils. Contact the manufacturer if cleaning is necessary.
- Magnetic Fields: Do not expose products to magnets or magnetic fields.
- Soldering: Preheat components before soldering. Ensure the temperature difference between solder and chip temperature does not exceed 150C. Soldering corrections after mounting should be within specified conditions to avoid short circuits, performance degradation, or lifespan reduction due to overheating.
- Thermal Design: Account for self-heating when power is applied to ensure sufficient thermal design tolerance.
- Layout: For non-magnetic shield types, carefully lay out coils on the circuit board to prevent malfunctions due to magnetic interference.
