B73180A0101M062 is the original TDK CeraCharge™ solid-state rechargeable battery.

Brand: TDK / EPCOSSeries: CeraCharge™ (Solid Ceramic Battery)Model: B73180A0101M062Type: Lithium Ceramic All-Solid-State Rechargeable Battery (Secondary Battery)Package: EIA1812 (4.4×3.0×1.1 mm), 2-terminal SMD

2. Electrical Specifications

Voltage

Nominal Voltage: 1.5 V DCTypical Operating Voltage: 0 ~ 1.6 VMaximum Charging Voltage: 1.8 V (Do not exceed under any circumstances)

Capacity & Current

Nominal Capacity: 100 µAh (0.1 mAh)Standard Discharge Current: 20 µAPeak Pulse Current: Up to several mAInternal Resistance: Ultra-low. Adopting multi-layer ceramic structure, ideal for long-term low-current discharge.

Cycle Life

Cycle Life: ≥ 1000 charge-discharge cyclesNo memory effect

Temperature Range

Operating Temperature: -20 ℃ ~ +80 ℃Reflow Soldering Compatibility: Peak temperature 260 ℃ for 10 seconds (Compatible with SMD assembly process)

Dimensions & Weight

Dimensions: 4.4 × 3.0 × 1.1 mmWeight: Approx. 0.04 g

Packaging & Logistics

Packaging: 12 mm carrier tape on 180 mm reelQuantity per reel: 1500 pcsMinimum Order Quantity: 1500 pcs

Safety & Environmental Compliance

Structure: All-solid-state ceramic electrolyte, liquid-freeSafety: Non-flammable, non-explosive and leakage-proofEnvironmental Compliance: RoHS compliant, lead-free and halogen-free

3. Key Features & Selling Points

• All-solid-state design with superior safety: No liquid electrolyte, completely eliminate risks of leakage, fire and explosion.

• Compact 1812 SMD package: Supports direct SMT mounting and reflow soldering, same assembly process as capacitors and resistors.

• Rechargeable & long service life: Over 1000 cycles, perfect for long-term low-power backup applications.

• Wide operating temperature range (-20 ℃ ~ +80 ℃): Suitable for industrial, IoT and automotive peripheral equipment.

• Capable of long-term low-current output and high pulse current: Ideal for RTC, wireless Beacons and energy harvesting energy storage.

4. Application Scope

1) IoT & Low-Power Wireless Devices

Bluetooth Beacons, BLE tags, asset trackersBackup power for LoRa / NB-IoT nodesWireless sensor nodes (temperature & humidity, vibration, door contact sensors)

2) RTC / Real-Time Clock Backup (Most Common Application)

Replacement for traditional lithium manganese / lithium thionyl button cells: Rechargeable, long lifespan, high safety and reflow solderable.Backup power for electricity meters, water meters, gas meters, industrial instruments and PLCs.

3) Wearables & Compact Medical Devices

Power supplement for smart bands and earphones, backup power for low-power displays.Medical patches and portable monitoring devices (applications requiring high safety and zero leakage).

4) Energy Harvesting Energy Storage