Ceramic Resonators (ZTB)

Direct KHz Ceramic Resonators (ZTB) are Murata resonator CSB compatible. The (ZTB) series ceramic resonators owe their development to Direct's expert technologies and the application of mass production techniques typically utilized in the manufacture of piezoelectric ceramic components. Because of their consistent high quality and high mechanical Q, the (ZTB) series are ideally suited to remote control unit and microprocessor applications.

Direct Resonators KHz (ZTB) series is designed to provide the engineer with a rugged, relatively low frequency device in the frequency range of 190 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 are tight to ± 0.3%.

The (ZTB) series conform to the RoHS directive. Direct will also produce devices outside these specifications to meet customer requirements, with comprehensive application engineering and design support available for customers worldwide. Please contact our sales for more information. Download complete datasheet (ZTB) PDF (371KB).

Benefit Features :
  1. Oscillating circuits requiring no adjustment can be designed by utilizing these resonators in conjunction with transistors or appropriate ICs.
  2. The ZTB series is stable over a wide temperature range and with respect to long-term aging.
  3. Miniature and lightweight, standardized for use in low profile devices.
  4. Highly reliable design with excellent environmental resistance.
  5. The ZTB series comprises fixed, tuned, solid-state devices.
  6. Operation Temperature (-20°C~+80°C).
  7. Low cost.
Applications :
  1. Square-wave and sine-wave oscillators.
  2. Clock generator for microprocessors.
  3. Remote control systems.
Dimensions (Unit: mm Tolerance: ±0.3mm) (ZTB)
KHz (ZTB) Dimensions
KHz (ZTB) Series Dimensions
Frequency Range
(kHz)
W
width
T
thickness
H
height
S
lead space
L
lead length
190~249 13.5 3.6 14.7 10.0 8.0
250~374 11.0 3.6 12.2 7.7 7.0
375~429 7.9 3.6 9.3 5.0 7.2
430~699 7.0 3.5 9.0 5.0 4.0(6.0)
700~1250 5.1 2.2 6.3 2.5 4.0
Technical Characteristics (ZTB)
Part
Number
Frequency
Accuracy
(at 25°C)
Resonant Impedance
(Ω)
Stability in
Temperature
(-20°C~+80°C)(%)
Aging For
10 Years (%)
Load Capacitance (pF)
C1 C2
ZTB82 ~ ZTB189 * ±2kHz ≤20 ±0.3 ±0.3 / /
ZTB190D ~ ZTB249D ±1kHz ≤20 ±0.3 ±0.3 330 470
ZTB250D ~ ZTB374D ±1kHz ≤20 ±0.3 ±0.3 220 470
ZTB375P ~ ZTB429P ±2kHz ≤20 ±0.3 ±0.3 120 470
ZTB430E ~ ZTB509E ±2kHz ≤20 ±0.3 ±0.3 100 100
ZTB510P ~ ZTB699P ±2kHz ≤30 ±0.3 ±0.3 100 100
ZTB700J ~ ZTB999J ±0.5% ≤70 ±0.3 ±0.3 100 100
ZTB1000J ~ ZTB1250J ±0.5% ≤100 ±0.3 ±0.3 100 100
* Note : ZTB82 ~ ZTB189 series is new products of custom design.
Resonator Selection - Test Circuit for MOS IC (ZTB)
KHz (ZTB) Test Circuit
KHz (ZTB) Test Circuit for MOS IC
Order Codes (ZTB)
ZTB455E P
Part Number
Package
P Bulk
TR Taping Reel