Surface Mount NTC THERMISTORS NTC Surface Mount Thermistors QT0805 Series Quality Thermistor's QT0805 Surface Mount Thermistors are the ideal solution for temperature sensing functions found in temperature compensation networks. Engineering Information Thermal Time Constant:* Dissipation Constant:* Temperature Range: Power Rating: 8 seconds (max.) - Still Air 2 mW/C (min.) - Still Air -65C - 150C 1/8 w (max.) * Depends on mounting he patented design features Leach GuardTM terminations T which are able to withstand many of today's modern automated assembly and soldering processes. Standard EIA sizing allows for tape and reel packaging designed for automated placement equipment. Contact Technical Support for information regarding our SMD engineering kit. Dimensions QT0805 Style L = .078" +/- .008" W = .049" +/- .008" T = .055" Max BW = .016" +/- .010" PATENT #5,257,003 Ordering Information Q T 0 8 0 5 Z - 10 4 K - ? Optional Termination Finish Tolerance Code Number of Zeros 1st and 2nd Resistance Digits R/T Curve Typical installation in TCXO (temperature compensated crystal oscillator) application Tolerance Options: M +/- 20% K +/- 10% J +/- 5% Other sizes and values available. Contact factory for details. -Optional Termination Finishes*: T = Pure Tin G = Gold *Optional Termination Finishes are RoHS compliant PART NUMBER QT0805K-500 QT0805K-101 QT0805X-102 QT0805T-202 QT0805Y-502 QT0805Y-103 QT0805Y-203 QT0805Z-503 QT0805Z-104 QT0805P-685 QT0805P-106 12 RESISTANCE @ 25C (OHMS) 50 100 1,000 2,000 5,000 10,000 20,000 50,000 100,000 6.8 Meg 10 Meg -Standard Termination Finishes: Solder Tin/Lead (not RoHS compliant) R-T CURVE K K X T Y Y Y Z Z P P BETA () 75/25 2282 2282 3000 3181 3513 3513 3513 3966 3966 4829 4829