1T399 Variable Capacitance Diode Description The 1T399 is a variable capacitance diode designed for the electronic tuning of wide-band CATV tuners, and it has a super miniature package. Features • Super miniature package • Small series resistance 0.75 Ω Max. (f=470 MHz) • Large capacitance ratio 11.7 Typ. (C2/C25) 18.0 Typ. (C1/C28) • Small leak current 10 nA Max. (VR=28 V) • Capacitance deviation in a matching group: within 2 % M-235 Absolute Maximum Ratings (Ta=25 °C) • Reverse voltage VR 34 • Operating temperature Topr –20 to +75 • Storage temperature Tstg –65 to +150 V °C °C Applications Electronic tuning of wide-band CATV tuners Structure Silicon epitaxial planar-type diode Electrical Characteristics Item Reverse current Diode capacitance Capacitance ratio Series resistance Capacitance deviation in a matching group (Ta=25 °C) Symbol IR C2 C25 C2/C25 C25/C28 rs ∆C Conditions Max. 10 35.50 2.93 Unit nA pF pF CD=14 pF, f=470 MHz 0.75 Ω VR=2 to 25 V, f=1 MHz 2 % VR=28 V VR=2 V, f=1 MHz VR=25 V, f=1 MHz Min. 29.50 2.53 11.0 1.03 Typ. 11.7 Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. —1— E97454A82-TE 1T399 Example of Representative Characteristics Diode capacitance vs. Reverse voltage Reverse current vs. Ambient temperature 100 Ta = 25°C VR = 28V 20 100 IR – Reverse current (pA) C – Diode capacitance (pF) 50 10 5 2 10 1 1 2 5 10 20 50 VR – Reverse voltage (V) 1 –20 0 20 40 60 80 Ta – Ambient temperature [°C] Forward voltage vs. Ambient temperature Reverse voltage vs. Ambient temperature 50 0.80 IR = 10µA VR – Reverse voltage (V) VF – Forward voltage (V) IF = 1mA 0.70 0.60 0.50 –20 0 20 40 60 45 40 35 –20 80 Ta – Ambient temperature (°C) 0 20 40 60 Ta – Ambient temperature (°C) —2— 80 1T399 Diode capacitance vs. Ambient temperature C (Ta)/C (25°C) – Diode capacitance 1.03 VR = 1V VR = 2V 1.02 VR = 7V 1.01 VR = 15V VR = 25V 1.00 0.99 0.98 –20 0 20 40 60 80 Ta – Ambient temperature (°C) Temperature coefficient of diode capacitance Reverse current vs. Reverse voltage 1000 100 Temperature coefficient (ppm/°C) Ta = 60°C Ta = 80°C IR – Reverse current (pA) Ta = 25°C 10 500 200 100 50 1 1 2 5 10 20 VR – Reverse voltage (V) 0.1 1 3 10 30 VR – Reverse voltage (V) —3— 50 1T399 Package Outline Unit : mm AA AA M-235 + 0.2 ∗1.25 – 0.1 ∗0.9 ± 0.1 + 0.1 0.3 – 0.05 0.2 2.5 ± 0.2 ∗1.7 ± 0.1 2 1 + 0.1 0.3 – 0.05 0 ± 0.05 + 0.1 0.11 – 0.06 0° to 10° NOTE: Dimension “∗” does not include mold protrusion. SONY CODE M-235 EIAJ CODE JEDEC CODE Marking PACKAGE WEIGHT CATHODE MARK 0.1g 2 99 B 1 —4— Notes 1) B:Lot No.(Year and Month of manufacture) Year;Last one digit Month;A,B,C(for Oct. to Dec.) 1 to 9(for Jan.to Sept.)