Solving the Hidden Power Problem in RTC and RAM Designs

In embedded systems, the real risk often hides in the milliseconds — when a sudden voltage dip silently erases memory or resets the real-time clock (RTC), leading to data corruption, time desynchronization, or even system crashes.

Designers often overlook this vulnerability during prototyping, only to discover its impact during field testing or customer complaints.

So, how do you protect volatile memory and timing circuits from power interruptions—without overcomplicating your design?

Meet the Kingtronics DKT-DA Series:
A compact 5.5V coin-type super capacitor specifically engineered for fast-response backup in RTC and RAM applications.

Why Power Gaps Break Your RTC & RAM Systems

• RTC modules lose track of time if power supply flickers
• RAM loses temporarily stored data if not flushed before a drop
• Traditional capacitors often charge too slowly or discharge too quickly
• Batteries offer capacity but degrade fast and require maintenance

These problems are invisible in stable lab conditions—but in real-world smart meters, industrial controllers, or portable electronics, they're common failure points.

DKT-DA Super Capacitor: Spec’d to Solve These Issues

Feature	Specification
Rated Voltage	5.5V
Surge Voltage	5.8V
Capacitance Range	0.1F to 1.5F
Operating Temp	-25°C to +70°C
Cycle Life	500,000 cycles at 25°C
Configurations	C / H / V mounting types
Applications	RTC, SRAM, smart meters, UPS modules

Thanks to its ultra-low ESR, quick response time, and maintenance-free design, DKT-DA ensures your system has enough energy to bridge micro-outages, letting microcontrollers properly shut down or store critical state.

Fit Your Design, Not the Other Way Around

With various mounting options and compact footprints (as small as Ø11.5mm × 6.4mm), you can choose a model that fits snugly into your PCB without redesigning your layout.

Examples:

• DKT-DA5R5C104 – 0.1F, 5.5V, Ø13.0 × 6.5mm, 5mm pin
• DKT-DA5R5H105 – 1.0F, 5.5V, Ø18.7 × 6mm, 20mm pin
• DKT-DA5R5V155 – 1.5F, 5.5V, Ø18.7 × 20.2mm, 5mm pin

Applications You Can Trust It In

• Smart meters (timestamping & memory logging)
• RTC modules (timekeeping during micro-cuts)
• SRAM buffers (volatile data protection)
• UPS controller boards
• Automotive electronics & industrial sensors

Wherever data integrity matters and power isn't always stable — this is your solution.

No Maintenance, Long Life, RoHS Compliant

No batteries to replace. No special charging circuit. Just robust energy buffering when you need it most — up to 500,000 cycles of reliable operation.

Ready to Fix That Power Gap?

Full specifications here:
View DKT-DA Super Capacitor Datasheet

Explore more solutions:
www.kingtronics.com

Talk to us directly:
info@kingtronics.com