ALN20S Series RoHS 85°C Compliant • 4 Pin Solder tag •Long Life 18000 hours at 85 °C (Ur, Ir applied) •Slit Foil technology application A new generation of audio capacitors is now available from BHC – T-Network Capacitor (TNC). The TNC has been designed specifically for audio applications by DNM design and is being manufactured in the UK by BHC. Basic design In a normal capacitor unwanted resistance and inductance force the input and output together electrically, making its unwanted characteristics very critical for performance - figure 1. The new T-Network capacitor (TNC) behaves differently because the input must flow along the capacitor plate to reach the output. The signal is forced into pure capacitance with most of the unwanted resistance and inductance appearing on each side of the bulk capacitance. The residual defects, therefore, tend to assist capacitance filtering in the T-Network design - figure 2. Figure 1: Conventional capacitor The TNC is designed for the most demanding filtering situations and it will redefine performance standards in many non-audio applications. For use in audio amplifiers, the TNC incorporates current slit foil technology to produce the ultimate audio capacitor. These capacitors give excellent results against standard components on a direct replacement. However, TNC high frequency performance is so enhanced that the H.F. compensation of test amplifiers may need resetting for best results. Figure 2: T-Network capacitor Specification Standards IEC 60384-4 Capacitance range 10000 µF Capacitance tolerance ±20% (-10% +30% where specified) Rated voltage UR 50 - 100 VDC Surge voltage US 1.15 x UR Leakage current IL = 0.006 x CR x UR (µA) or 6mA whichever is the smaller. Note, CR is in µF. Operational life time +85°C, UR , IR 18000 hours +85°C, UR 29000 hours Shelf Life 2000 hrs at 0V +85°C, or 30000 hrs at 0V +40°C Temperature range –40 to +85°C (Operating) Test Condition: < 30s surge, 1000 cycles @ 85°C Test Condition: UR, 5mins., 20°C End of Life requirement: ∆C/C ESR IL -55°C to +85°C (Storage) < ±10% < 2 x initial ESR value < initial specified limit ALn20s 85°c Specification L 6.3 ±1 PCD 25mm Ø40±1 + + Input Positive Output Negative (black) PCD 25mm Output Positive PCD 9mm Input Negative (black) Mounting hole diameter 1.3mm Dimensions (sleeved) mm Part Number Capacitance UR Length L ± 2 µFV ALN20S1053DD ALN20S1106DD ALN20S1067DD ALN20S1107DE ALN20S1108DF 10,000 -10% +30% 10,000 ±20% 10,000 ±20% 10,000 ±20% 10,000 ±20% 50V 50V 63V 80V 100V mm 55 55 55 75 105 BHC and Evox Rifa Electrolytic Capacitors 143