KV1745 8V Series VCD for FM Tuning 8VFMVCD Feature Included Twin Element 1 Very Small Tolerance of Element Being Next Device To Each Other Excellent Linearity of the C-V Curve C-V Extra Large Capacitance Ratio: A=1.95 to : A=1.95~ : RS= ~0.3 Very Small Series Resistance: RS= to 0.3 Reverse Voltage VR=14V VR=14V IF=50mA Forward Current IF=50mA Operating Temp. Range TOP=-55 to +85C TOP=-55~+85C Electrical Characteristics Part Name VR.MAX Capacitance(pF) Capacitance Ratio RS.MAX (V) Min. Typ. Max. VR(V) Min. Typ. Max. VR(V) KV1745 14 43.53 46.68 2 1.95 2.35 2/8 0.3@2V,100MHz 18.38 8 23.85 * The value of capacitance is the average of 2 back to back type diodes. Back to Back Type 2 * Diode Capacitance measured with Agilent 4279A or equivalent instruments (at OSC level 205mVrms) Agilent 4279AOSC 205mVrms * Resistance meter is Agilent 4291B or equivalent instruments. Agilent 4291B * The tolerance of element that is next to each other in same reel is within 3% at C2 and C8. C2C8 3% Classification C C2.MIN(pF) C2.MAX(pF) Rank1 43.53 45.20 Rank3 44.75 46.48 Ordering Guide, Pin Layout, Marking Part Name Ordering Name KV1745 KV1745RTL-G KV1745 KV1745STL-G Page 40 Pin Layout D4 3 1 Marking 2 C45 Description Order Size KV1745: Part Name R: SOT23C-3 Package TL: Tape&Reel, Left -G: PB-Free KV1745: Part Name S: SOT23-3 Package TL: Tape&Reel, Left -G: PB-Free 3,000 pcs. /Reel 3,000 pcs. /Reel 2010 SPRING Typical Characteristics f=1MHz, TA=25C f Hz Hz f=70M Q f=100MHz 100 10 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 VR, Reverse Voltage(V) C(TA)/C(25C) vs. Reverse Voltage C(TA)/C(25C) f=1MHz, TA=-55 to +85C 1.05 1.04 TA =+8 5 C 1.03 TA =+ 1.02 55C 1.01 TA=+25C 1.00 TA=-15C 0.99 0.98 TA=-55C 0.97 0.96 0.95 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 VR, Reverse Voltage(V) 2010 SPRING 100p T A=+ 55C 10p T A=+ 25C 0.3 VR=2.0V, TA=25C RS, Series Resistance() 1000 M =50 85C T A=+ 1p 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 VR, Reverse Voltage(V) Series Resistance vs. Frequency 0.1 50M 500M f, Frequency(Hz) Capacitance Temp. Coefficient vs. Reverse Voltage C/TA, Temp. Coefficient(ppm/C) C, Capacitance(pF) 10 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 VR, Reverse Voltage(V) Q vs. Reverse Voltage Q 10000 TA=+25, +55, +85C 1n IR, Reverse Current(A) 100 C(TA)/C(25C) Reverse Current vs. Reverse Voltage 1000 f=1MHz, TA=25C 100 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 VR, Reverse Voltage(V) Page 41 4 VCD for FM Tuning Capacitance vs. Reverse Voltage