ZTK6.8 thru ZTK33 Voltage Stabilizers DO-204AH (DO-35 Glass) Features • Temperature-Compensated Stabilizing Circuits • Monolithic linear integrated circuits with extremely short thermal run-in time producing a constant temperature-compensated voltage. They are particularly suitable for stabilizing the tuning voltage in radio and TV tuners employing voltagevariable capacitance diodes. Mechanical Data Case: DO-35 Glass Case Weight: approx. 0.13 g Packaging codes/options: D7/10K per 13” reel (52mm tape), 20K/box D8/10K per Ammo tape, (52mm tape), 20K/box Dimensions are in inches and (millimeters) Maximum Ratings (TA = 25°C unless otherwise noted) Parameter Symbol Value Unit Junction temperature TJ 150 °C Storage temperature range TS – 20 to +150 °C Operating Current (see Table “Characteristics”) Electrical and Thermal Characteristics Parameter Temperature Coefficient of the operating voltage at IZ = 5 mA ±0.5 in the range of Tamb = 20 to 60°C Thermal Run-in-Time Thermal resistance junction to ambient air Type ZTK6.8 ZTK9 ZTK11 ZTK18 ZTK22 ZTK27 ZTK33A ZTK33B ZTK33C (TA = 25°C unless otherwise noted) Symbol Min. Typ. Max. Unit αVZ –10 –2 +5(1) 10–5/°C tth – –20(2) – s RθJA – – 0.4 °C/W Operating Voltage at IZ = 5mA(3) VZ (V) Dynamic resistance at IZ = 5mA rzj (Ω) Permissable operating at Tamb = 25°C(4) 6.4 ... 7.1 8 ... 10 10 ... 12 16 ... 20 20 ... 24 24 ... 30 30 ... 32 32 ... 34 34 ... 36 10 (<25) 10 (<25) 10 (<25) 11(<25) 11(<25) 12 (<25) 12 (<25) 12 (<25) 12 (<25) 36 27 1 13 1 8 7 7 7 IZ max. (mA) Notes: (1) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case (2) At the end of this time ∆VZ has reached 90% of its final value ∆VZ max. ∆VZ max = VZ (a) – VZ (0), where VZ (0) = VZ in the instant of turn-on and VZ (a) = VZ at thermal equilibrium (3) Tested with pulses tp = 5ms (4) Valid provided that leads are kept at ambient temperature at a distance of 8mm from case 7/7/00 ZTK6.8 thru ZTK33 Voltage Stabilizers Ratings and Characteristic Curves TA = 25OC unless otherwise noted.