Surface Mountable Resonators (ZTBY)

Direct formed leads surface mountable resonator is compatible to Murata resonator CSBF. Direct manufactures a broad range of high quality Ceramic Resonators covering both the KHz and Mhz frequency ranges and a full range of industry standard Through Hole and Surface Mount resonators both with and without internal capacitors. The high quality and extensive coverage of this product line allows optimum design of almost any oscillating circuit.

The surface mountable Ceramic resonators (ZTBY) is one of (ZTB) device series with the frequency range of 375 kHz to 1,250 kHz. Initial frequency tolerance is ± 0.5% which compares very favorably to the norminal ±2% ~ ±3% requirements of one chip microprocessors. Stability and Aging Tolerance narrows to ± 0.3%. The (ZTBY) Resonator provides reliable start up and stable oscillation in microprocessor circuits across a wide variety of applications.

The (ZTBY) Ceramic resonators stand between quartz crystal oscillators and LC/RC oscillators in regard to accuracy but are considerably smaller, require no adjustments, have improved start-up times, and are low in cost. The (ZTBY) oscillation is dependent upon mechanical resonance associated with their piezoelectric crystalline structure and utilizes the area vibration mode of the piezoelectric element.

Direct (ZTBY) resonators conform to the RoHS directive. Application of specific designs also available including different tighter tolerances specification adjusted to frequency requirements. Please contact our sales for more information. Download complete datasheet (ZTBY) PDF (370KB).

Dimensions (Unit: mm Tolerance: ±0.3mm) (ZTBY)
Surface Mountable KHz (ZTBY) Dimensions
Surface Mountable KHz (ZTBY) Dimensions
lead space
T1 T2
375~429 8.0 3.5 9.0 5.0 1.0 0.15
430~509 7.5 3.3 8.5 5.0 1.1 0.15
510~699 7.0 3.0 8.5 5.0 1.1 0.15
700~1250 5.0 2.2 6.0 2.5 0.8 0.12
Technical Characteristics (ZTBY)
(at 25°C)
Resonant Impedance
Stability in
(-20°C ~ +80°C)
Aging For
10 Years (%)
Load Capacitance
C1 C2
ZTB375 ~ 429Y ±2kHz ≤20 ±0.3 ±0.3 120 470
ZTB430 ~ 509Y ±2kHz ≤20 ±0.3 ±0.3 100 100
ZTB510 ~ 699Y ±2kHz ≤30 ±0.3 ±0.3 100 100
ZTB700 ~ 999Y ±0.5% ≤70 ±0.3 ±0.3 100 100
ZTB1000 ~ 1250Y ±0.5% ≤100 ±0.3 ±0.3 100 100
Resonator Selection - Test Circuit for MOS IC (ZTBY)
(ZTBY) Test Circuit for MOS IC
(ZTBY) Test Circuit for MOS IC
Order Codes (ZTBY)
ZTB 455 Y P
Part Number
Center Frequency (KHz)
SMD type
P Bulk
TR Taping Reel