Product Overview
The ZEMS0850 is an integrated molded power inductor designed for high-density installation. It features low DC resistance, ultra-high current capability in a thin design, and magnetic shielding for strong anti-electromagnetic interference. Its composite construction ensures high reliability, excellent vibration resistance, and ultra-low buzz noise. This inductor is suitable for various DC/DC converters and power applications.
Product Attributes
- Brand: ZEMS
- Origin: Dongguan, China
- Material: Low-loss alloy powder, composite construction
- Certifications: RoHS, Halogen Free, REACH Compliant
Technical Specifications
| Part No | Inductance (H) | Tolerance | Test Frequency / Voltage | DCR (m) Max | Saturation Current (A) Typical | Temperature Rise Current (A) Typical |
| ZEMS0850-R56M | 0.56 | 20% | 100KHz / 1.0V | 3.00 | 4.50 | 30.0 |
| ZEMS0850-R68M | 0.68 | 20% | 100KHz / 1.0V | 3.60 | 6.00 | 25.0 |
| ZEMS0850-1R0M | 1.0 | 20% | 100KHz / 1.0V | 4.10 | 5.50 | 21.0 |
| ZEMS0850-1R5M | 1.5 | 20% | 100KHz / 1.0V | 5.00 | 7.00 | 20.0 |
| ZEMS0850-2R2M | 2.2 | 20% | 100KHz / 1.0V | 8.20 | 12.0 | 17.0 |
| ZEMS0850-3R3M | 3.3 | 20% | 100KHz / 1.0V | 11.0 | 15.0 | 13.0 |
| ZEMS0850-4R7M | 4.7 | 20% | 100KHz / 1.0V | 15.0 | 20.0 | 12.5 |
| ZEMS0850-5R6M | 5.6 | 20% | 100KHz / 1.0V | 15.0 | 20.0 | 12.0 |
| ZEMS0850-6R8M | 6.8 | 20% | 100KHz / 1.0V | 15.0 | 20.0 | 11.0 |
| ZEMS0850-100M | 10.0 | 20% | 100KHz / 1.0V | 35.0 | 45.0 | 8.5 |
| ZEMS0850-150M | 15.0 | 20% | 100KHz / 1.0V | 47.0 | 55.0 | 7.0 |
| ZEMS0850-220M | 22.0 | 20% | 100KHz / 1.0V | 78.0 | 88.0 | 5.5 |
| ZEMS0850-330M | 33.0 | 20% | 100KHz / 1.0V | 120.0 | 140.0 | 6.0 |
| ZEMS0850-470M | 47.0 | 20% | 100KHz / 1.0V | 177.0 | 190.0 | 4.0 |
| ZEMS0850-560M | 56.0 | 20% | 100KHz / 1.0V | 188.0 | 226.0 | 3.5 |
| ZEMS0850-680M | 68.0 | 20% | 100KHz / 1.0V | 280.0 | 310.0 | 3.00 |
| ZEMS0850-101M | 100.0 | 20% | 100KHz / 1.0V | 280.0 | 310.0 | 2.50 |
Features
- Low RDC and ultra-high current thin design
- Magnetic shielding type, strong anti-electromagnetic interference, suitable for high-density installation
- High-reliability, High vibration resistance as result of newly developed integral construction
- Ultra Low buzz noise, due to composite construction
- Die-casting by low loss alloy powder low impedance, Small parasitic capacitance
- High efficiency Low DC resistance of winding and low eddy-current loss of the core
- Frequency up to 3MHz
- Absolute maximum voltage 30VDC
- RoHS, Halogen Free and REACH Compliant
Applications
- PDA, notebook, desktop, server applications
- High current POL converters
- Battery powered devices
- DC/DC converters in distributed power system
Environmental Data
- Operating Temperature: -55 to +125 (Including coils self-temperature rise)
Test Equipment
- L: WK3260B LCR meter or equivalent
- Isat & Irms: WK3260B+WK3265B
- DCR: Chroma 16502 or equivalent
Product Identification
- Product symbol: ZEMS
- Dimension (LWH) (mm): 0850 (8.5x8.0x5.0)
- Inductance nominal value: e.g., 10uH
- Inductance tolerance: e.g., M (20%)
Shape and Dimensions
| Part No | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) | H (mm) |
| ZEMS0850 | 8.50.5 | 8.000.30 | 5.0 | 3.00.3 | 1.80.3 | 4.50 | 9.5 | 3.50 |
Reliability Data
| Item | Requirements | Test Methods and Remarks |
| Operating Temperature Range | -55+125 (Including self-heating temperature rise) | |
| Solderability | 90% or more of electrode area shall be coated by new solder. | Dip pads in flux and dip in solder pot (96.5Sn/3.0Ag/0.5Cu) at 245 5 for (51) seconds. |
| Resistance to Soldering Heat | No visible mechanical damage. Inductance change: Within 10%. | Dip pads in flux and dip in solder pot (96.5Sn/3.0Ag/0.5Cu) at 2605 for (101) seconds. |
| Low temperature store | No visible mechanical damage. Inductance change: Within 10%. | Store temperature -552 for total 1000hr. |
| High temperature store | No visible mechanical damage. Inductance change: Within 10%. | Store temperature 1252 for total 1000hr. |
| Static Humidity | No visible mechanical damage. Inductance change: Within 10%. | Inductors shall be subjected to (933)%RH . at 40 2 for 96 h2 h . Inductors are to be tested after having air dried for 2 hours. |
| Thermal shock | No visible mechanical damage. Inductance change: Within 10%. | (-403, time(303) min (852) /(303) min, conversion time (2~3) min, cycle 5 times; Tested after 2 hours at room temperature. |
| Mechanical Shock | No evidence of terminal peel off and wire broken. | Inductors shall be Soldering on the PCB with 1.0mm thick and fixed them in a 15cm big.,1.4Kg weight cube with brass base, let it nature fallen form 0.5m height (X,Y,Z three axes) |
| Adhesion of terminal electrode | Strong bond between the pad and the core, without come off. | Inductors shall be Subjected to 260 5 for 20 s5 s Soldering in the base whit 0.3mm solder. And then aplomb electrode way plus tax 10 N for 10 1s seconds. |
Packaging
Tape and Reel Specifications and Reel dimensions are available.
Recommended Soldering Profile
Reflow soldering is recommended. Solder: Sn-3.0Ag-0.5Cu. Flux: Rosin-based flux, not strongly acidic or water-soluble flux.
Inspection Rules
Inspection will be performed per GB/T2828.1-2003. Customer must complete inspection and notify supplier in writing within one month of receipt, otherwise it is considered approved.
Storage Methods
Storage Period: Use within 6 months from delivery. Confirm solderability if stored over 6 months.
Storage Conditions: Temperature: -10 ~ +40, Relative Humidity: 30~70%RH. Avoid rapid temperature/humidity changes, chemical environments, bulk packaging, moisture, dust, heat shock, vibration, and direct sunlight.
Notes
- Data changes require mutual confirmation; unilateral changes are invalid.
- The company is not liable for equipment failure outside of general electronics applications.
- This specification covers the component as a single unit; customer must evaluate its performance in their application circuit.
- This approval sheet must be returned with customer's chop within 7 days of receipt, or it is considered approved.
2411220032_ZE-ZEMS0850-150M_C41413140.pdf
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