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B82442-H1102-K

High-current version Size 2220 (EIA) or 5650 (IEC) Rated inductance 1 to 10000 mH Rated current 35 to 2500 mA

Partnumber Manufacturer Quantity Availability
B82442-H1102-K,B82442H1102K 1361 In Stock

Description and Introduction

High-current version Size 2220 (EIA) or 5650 (IEC) Rated inductance 1 to 10000 mH Rated current 35 to 2500 mA The part B82442-H1102-K is manufactured by TDK. It is a common mode choke designed for use in automotive and industrial applications. Key specifications include:

- **Inductance**: 10 mH (millihenries)  
- **Current Rating**: 100 mA (milliamperes)  
- **DC Resistance**: 5 Ω (ohms)  
- **Operating Temperature Range**: -40°C to +125°C  
- **Voltage Rating**: 50 V (volts)  
- **Package/Size**: SMD (Surface Mount Device)  

This component is used for noise suppression in circuits, particularly in automotive electronics.  

(Note: Always verify specifications with the latest datasheet from TDK or authorized distributors.)

Application Scenarios & Design Considerations

High-current version Size 2220 (EIA) or 5650 (IEC) Rated inductance 1 to 10000 mH Rated current 35 to 2500 mA # Technical Documentation: B82442H1102K Common Mode Choke

## 1. Application Scenarios

### Typical Use Cases
The B82442H1102K is a surface-mount common mode choke designed for  electromagnetic interference (EMI) suppression  in electronic circuits. Typical applications include:

-  Differential mode noise filtering  in power supply lines
-  Common mode noise attenuation  in data communication interfaces
-  USB 2.0/3.0 port protection  against electromagnetic interference
-  Ethernet PHY filtering  for network equipment
-  HDMI/DVI interface filtering  in multimedia devices

### Industry Applications
 Automotive Electronics: 
- Infotainment systems
- CAN bus networks
- Automotive Ethernet interfaces
- ADAS sensor interfaces

 Consumer Electronics: 
- Smartphones and tablets
- Gaming consoles
- Set-top boxes
- Computer peripherals

 Industrial Equipment: 
- PLC communication interfaces
- Industrial Ethernet
- Motor drive systems
- Measurement instruments

 Telecommunications: 
- Network switches and routers
- Base station equipment
- Fiber optic transceivers

### Practical Advantages and Limitations

 Advantages: 
-  High common mode impedance  (1000Ω @ 100MHz)
-  Compact 0805 package size  (2.0×1.25×0.9mm)
-  Excellent high-frequency performance  up to 1GHz
-  High current rating  (200mA)
-  AEC-Q200 qualified  for automotive applications
-  RoHS compliant  and halogen-free

 Limitations: 
-  Limited to low-power applications  (max 200mA)
-  Not suitable for high-voltage circuits  (rated 80V DC)
-  Frequency response optimized  for 1-500MHz range
-  Temperature range  limited to -55°C to +125°C

## 2. Design Considerations

### Common Design Pitfalls and Solutions

 Pitfall 1: Incurrent Rating Oversight 
-  Problem:  Exceeding 200mA current rating causes saturation and performance degradation
-  Solution:  Calculate peak current requirements and include 20% safety margin

 Pitfall 2: Improper Grounding 
-  Problem:  Poor grounding reduces common mode rejection effectiveness
-  Solution:  Implement solid ground plane and minimize ground loop areas

 Pitfall 3: Frequency Mismatch 
-  Problem:  Using outside optimal frequency range (1-500MHz)
-  Solution:  Verify operating frequency matches choke's impedance characteristics

### Compatibility Issues

 Power Supply Circuits: 
- Compatible with  switching regulators  up to 500kHz
- May require additional  differential mode filtering  for noisy environments
-  Avoid pairing  with high-ESR capacitors in filter networks

 Digital Interfaces: 
- Excellent compatibility with  USB 2.0/3.0 PHY  chips
- Suitable for  Ethernet magnetics  integration
-  Signal integrity  maintained up to 480Mbps (USB 2.0)

 Mixed-Signal Systems: 
-  Isolate from high-power  RF circuits to prevent coupling
-  Maintain separation  from clock generators and oscillators

### PCB Layout Recommendations

 Placement Guidelines: 
- Position  close to connectors  for optimal EMI suppression
- Maintain  minimum 1mm clearance  from other components
-  Avoid routing  sensitive signals beneath the choke

 Routing Considerations: 
- Use  symmetric trace lengths  for differential pairs
- Implement  45° angles  instead of 90° bends
- Maintain  consistent impedance  throughout signal path

 Grounding Strategy: 
- Connect to  solid ground plane  using multiple vias
-  Separate analog and digital  grounds if used in

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