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BLA31BD121SN4D from TDK

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BLA31BD121SN4D

Manufacturer: TDK, MURATA

EMIFIL (Inductor type) Chip Ferrite Bead (Array) BLA31A/BLA31B Series (1206 Size)
Partnumber Manufacturer Quantity Availability
BLA31BD121SN4D TDK, MURATA 63917 In Stock

Description and Introduction

EMIFIL (Inductor type) Chip Ferrite Bead (Array) BLA31A/BLA31B Series (1206 Size) The part **BLA31BD121SN4D** is a **multilayer ceramic capacitor (MLCC)** manufactured by **TDK**.  

### **Specifications:**  
- **Capacitance:** 120 pF (121 = 12 x 10^1 pF)  
- **Tolerance:** ±0.1 pF (SN = ±0.1 pF)  
- **Voltage Rating:** 100 V DC (4D = 100 V)  
- **Dielectric Type:** C0G/NP0 (Temperature-stable)  
- **Temperature Coefficient:** 0 ±30 ppm/°C (C0G/NP0)  
- **Termination:** Nickel barrier with tin plating  
- **Operating Temperature Range:** -55°C to +125°C  
- **Case Size:** EIA 1206 (3216 metric)  

This MLCC is designed for **high-reliability applications**, including **RF circuits, filters, and timing circuits**, due to its **low loss and stable capacitance over temperature**.  

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Application Scenarios & Design Considerations

EMIFIL (Inductor type) Chip Ferrite Bead (Array) BLA31A/BLA31B Series (1206 Size)

Alternative Part Number

  • BLM31PG121SN1L --: Chip ferrite bead in 1206 size with 120 ohm impedance at 100 MHz, directly matching the original's impedance and package for EMI suppression.
  • MPZ3216D121AT000 --: Same manufacturer 1206-size ferrite bead with 120 ohm impedance, offering similar electrical performance and a different series naming.
  • FBMH3216HM121NT --: 1206 high-current ferrite bead with 120 ohm impedance, suitable drop-in alternative for noise filtering in power lines.
  • HCB1206KF-121T60 --: 1206 high-current ferrite bead with 120 ohm impedance, comparable performance and footprint for power-line noise filtering.
  • DLW31SN121SQ2L --: Same 1206-size chip common mode choke with 120 ohm impedance, similar current rating and DC resistance, suitable drop-in for EMI suppression in differential lines.
  • ACM2520-121-2P --: Common mode choke with 120 ohm impedance at 100 MHz in a comparable small SMD package, widely used as a cross-brand alternative for signal line filtering.
  • MCZ1210DH121L2T --: Compact common mode choke array with 120 ohm impedance, offering similar differential-mode noise suppression for high-speed signal lines.

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