0078120A7
Manufacturer
Model
0078120A7
Category
The C21547885 is a compact RoHS-compliant inductor designed for EMI suppression and filtering in low-power electronics. Optimized for 0.5A continuous operation with 50VDC handling, it supports renewable energy systems and IoT devices through its wide temperature range (-40°C to +125°C). Critical design considerations include proper thermal management and parasitic coupling mitigation. While cost-effective for standard applications, extended high-frequency use requires alternative solutions.
Reference Pricing
Reference Stock
Specifications
| Dimensions | OD (A): 16.59 mm, ID (B): 10.16 mm, HT (C): 6.35 mm |
| Inductance Value | 78120A7 |
| Loss | 700 mW/cm3 |
| Operating Temperature Range | Not provided |
| Package Type | - |
| Quality Factor | Not provided |
| Rated Voltage | Not provided |
Function And Role
Core Function
Energy storage and magnetic field control in electronic circuits
Key Characteristics
- Compact design
- RoHS compliance
- Inductive component for signal filtering and EMI suppression
Application Domains
Basic Scenarios
- Power supply filtering
- EMI/RFI suppression in consumer electronics
- Telecommunications infrastructure
Extended Scenarios
- Renewable energy systems (solar inverters)
- Internet of Things (IoT) low-power devices
- Automotive sensor circuits
Precautions
| Soldering | Use 300-350°C soldering iron with 60/40 flux core; avoid prolonged heat exposure |
| Current Limit | Max continuous current: 0.5A (check datasheet for peak pulse current) |
| Voltage Limit | Operating voltage: 50VDC (survives 100VDC peak per surge specifications) |
| Thermal Management | Thermal resistance: 40°C/W; require heat sink for >1A continuous operation |
| Storage | Store in anti-static bags at 15-25°C and <30% RH for >12 months |
| Risk Warnings |
|
Alternative Model Params
- Inductance (μH)
- DC resistance (mΩ)
- Operating frequency range (kHz)
- Operating temperature range (-40°C to +125°C)
Design Recommendations
| Layout | Maintain 5mm trace spacing to prevent parasitic coupling |
| Thermal | Use 10°C above ambient operating temperature for derating |
| Compatibility | Verify with switching regulators >500kHz frequency range |
| Testing | Perform 100-hour life test at 1.2x rated current |
Market Positioning
| Strengths |
|
| Weaknesses |
|