NS-21R (Saw Resonator 1port-type)


RoHS Compliant

pb free


  • Frequency range
    300MHz to 500MHz
  • External dimensions
    2.5 × 2.0 × 0.86mm
  • Overtone order
  • Applications
    RKE (Small wireless equipment)
    (Please contact us for except RKE use.)
  • High reliability and excellent temperature characteristic.
  • The smallest package size in the world.


Item Symbol Specifications Condition/
Nominal frequency range f_nom 300MHz to 500MHz Please contact us for inquiries regarding available frequencies.
Storage temperature T_stg -40°C to +85°C Store as bare product.
Operating temperature T_use -40°C to +85°C
Level of drive DL 2mW Max.
Frequency tolerance (standard) f_tol ±50 × 10-6, ±100 × 10-6, ±150 × 10-6 +25°C
Turnover temperature Ti +20°C ±20°C Please contact us for inquires about Peak temperature
Parabolic coefficient B -(1.6±0.4) × 10-8 / °C2
Harmonic ratio RS/R1 2Min.
Motional resistance (ESR) R1 20Ω Max.
Frequency aging f_age ±10 × 10-6 / year Max. +25°C
Shock resistance S.R. ±10 × 10-6 Max. Nine drops on a concrete surface from 1500mm

Product name (Standard form)

Product name (Standard form) / Product number

External dimension


(Unit: mm)

#2,#4 are connected to the cover.

Footprint (Recommended)


(Unit: mm)

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