LIHC1620 250F 3.8V LIHC 16x22mm 150mΩ DCR 16A Pulse 1.0A Continuous

General Specifications
Rated capacitance at 25±3°C is 250F, measured between 3.8V and 2.5V. Nominal voltage is 3.8V. Operating voltage spans 2.5V to 3.8V. Maximum charging voltage is 4.2V. DCR is ≤150mΩ at 4.2V with 10ms pulse. ACR is ≤50mΩ at 1kHz and 3.6V. Continuous discharge current is 1.0A. Pulse discharge current (<1s) is 16.0A, the highest pulse current in the entire LIHC series. Maximum charge current is 2.0A, also the highest in the series. Leakage current is ≤6.0μA after 72h at 25°C. Operating temperature is -40°C to 65°C. Storage temperature is 10°C to 40°C.

Physical Dimensions
Diameter ΦD is 16mm with +0.5mm maximum, the widest body in the LIHC series. Length L is 22±1.5mm. Lead length L1 is 25.5±1.0mm and L2 is 22.5±1.0mm. Lead diameter Φd is 0.8±0.1mm, thicker than the 0.6mm leads used in 10mm and 12.5mm series. Lead pitch P is 7.5±0.5mm, wider than the 5mm pitch of smaller diameter series. Weight is ≤8.5 grams. The cylindrical aluminum shell provides mechanical protection and sealing. The rubber plug prevents short circuits and electrolyte leakage. The larger 16mm diameter with thicker leads and wider pitch supports higher current handling capability.

Cycle Life Characteristics
Cycle life exceeds 250,000 cycles under 10C charge/discharge between 3.7V and 3.1V at room temperature. After 250,000 cycles, capacitance retention is at least 70 percent of initial value and internal resistance remains within 4 times the initial specified value.

Temperature Performance
At -20°C, capacitance retention is ≥70% of initial value and internal resistance ≤10 times initial specified value. At +65°C, capacitance change stays within ±10 percent of initial value and internal resistance remains within initial limits. High temperature and high humidity storage (60±3°C, 90±3% RH for 1000 hours) results in capacitance ≥70% and internal resistance ≤2 times initial value. High temperature float test at 65°C and 3.8V for 1000 hours maintains capacitance ≥70% and resistance ≤4 times initial value.

Safety and Quality
The product meets general safety requirements with no explosion and no fire under overcharge, short circuit, thermal exposure, and mechanical stress tests. It complies with IEC 62831 and IEC 62391 standards.

Applications
This LIHC is ideal for IoT devices and smart meters requiring intermittent data transmission and long standby life. It powers wireless communication modules (RF/GPS) for burst transmissions. It serves as a backup power source for memory retention and real time clocks. It provides energy buffering and peak power support for industrial sensors, actuators, and controllers. The 16mm diameter with thicker leads and 16A pulse capability makes this part suitable for the highest current demand applications where maximum pulse power is required. The 22mm length provides a moderate height while the wider body supports higher thermal dissipation.

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Storage and Shipping
Each capacitor is shipped at a voltage between 3.3V and 3.8V. Standard export packaging in cartons is applied. Store at 10°C to 40°C for long term preservation.

Precautions
Use within specified voltage (2.5V to 3.8V, max 4.2V) and temperature (-40°C to 65°C). Avoid reverse polarity. Avoid excessive heat during soldering. Avoid mechanical damage and external short circuits.