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BLA31BD221SN4

Manufacturer: TDK

SMD/BLOCK Type EMI Suppression Filters
Partnumber Manufacturer Quantity Availability
BLA31BD221SN4 TDK 10000 In Stock

Description and Introduction

SMD/BLOCK Type EMI Suppression Filters The part **BLA31BD221SN4** is a **Multilayer Ceramic Capacitor (MLCC)** manufactured by **TDK**. Here are its specifications:

- **Capacitance**: 220 pF (±0.1pF)  
- **Voltage Rating**: 100 V DC  
- **Dielectric Material**: C0G (NP0) – Temperature-stable Class I ceramic  
- **Tolerance**: ±0.1pF  
- **Temperature Coefficient**: 0 ±30 ppm/°C (C0G characteristic)  
- **Operating Temperature Range**: -55°C to +125°C  
- **Termination**: Nickel barrier with tin plating (Sn)  
- **Case Size (EIA)**: 1206 (3216 metric) – 3.2mm × 1.6mm  
- **Packaging**: Tape and reel (standard)  

This capacitor is designed for **high-frequency, high-stability applications**, including RF circuits, filters, and timing circuits.  

(Source: TDK datasheet for BLA31BD221SN4)

Application Scenarios & Design Considerations

SMD/BLOCK Type EMI Suppression Filters

Alternative Part Number

  • BLM31PG221SN1 --: Same 1206 ferrite bead with 220 ohm impedance at 100 MHz, directly interchangeable in most EMI suppression designs.
  • MMZ2012Y221BT000 --: Similar 220 ohm ferrite bead in a comparable chip size, suitable as a functional replacement for noise filtering.
  • HCB1206KF-221T60 --: 1206 ferrite bead with 220 ohm impedance, a cost-effective alternative with matching electrical characteristics.
  • MMZ1608B221CTAH0 --: TDK multilayer chip bead in the same 0603 (1608 metric) size with similar 220 ohm impedance at 100 MHz, suitable for general signal line noise suppression.
  • BLM18PG221SN1D --: Murata ferrite bead in 0603 package with 220 ohm impedance at 100 MHz and comparable current rating, a common cross-brand substitute for TDK BLM/BLA series beads.
  • FBMH1608HM221NT --: Taiyo Yuden 0603 high-current ferrite bead with 220 ohm impedance at 100 MHz, offering similar filtering performance as an alternative source.

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