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DMS3R3224RS
DMS3R3224RS
| Part Number | DMS3R3224RS |
|---|---|
| Manufacturer | KORCHIP |
| Category | Capacitors > Electric Double Layer Capacitors (EDLC) / Supercapacitors |
| Description | 3.3V 0.22F (220mF) SMD Coin Tab Supercapacitor (EDLC), ESR ≤200Ω @ 1kHz, Φ6.8×1.4mm. Warning: Reflow soldering prohibited, manual soldering only. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
DMS3R3224RS is KORCHIP DMS series 3.3V 0.22F EDLC supercapacitor. Designed for RTC and memory backup for compact electronics, it adopts electrostatic adsorption technology, supporting over 500,000 charge-discharge cycles with no memory effect. Operating temperature ranges from -10°C to +60°C, delivering stable backup power for MCU and volatile memory during power loss. Note: Reflow soldering is prohibited; only manual soldering is allowed.
Core Advantages
High Capacitance in Ultra-Compact Coin Form Factor
Provides high energy capacity of 0.22F (220mF) in Φ6.8 × 1.4mm coin cell profile, offering exceptional board space savings for dense PCB layouts.
Exceptional Charge / Discharge Cycle Durability
Supports hundreds of thousands of full charge-discharge cycles without capacity loss or memory effect, drastically extending system operating lifespan compared to chemical batteries.
Wide 3.3V Voltage Compatibility
Rated directly for 3.3V bus operations, eliminating the need for series capacitor balancing circuits or complex voltage conversion logic when backing up standard 3.3V ICs.
Eco-Friendly & Maintenance-Free Operation
Constructed entirely of environmentally friendly materials (lead-free, heavy metal-free) that require zero scheduled maintenance or battery replacement over product life cycles.
Key Specifications
| Brand | KORCHIP (DMS Series) |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free / Green |
| EDA/CAD Model | Schematic symbol models, 3D CAD step profiles, and PCB footprint land patterns are available on request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | SMD (D6.8mm xL1.4mm) |
| Mounting Type | SMD Tab Terminal, Hand Soldering Only, Reflow Soldering Prohibited |
| Surface Marking / Silkscreen | 3.3V 0.22F / KORCHIP, Marking |
| Capacitance | 0.22 F (220 mF) |
| Rated Voltage | 3.3 V DC |
| Capacitance Tolerance | -20% to +80% |
| Equivalent Series Resistance (ESR) | ≤200 Ω @ 1kHz |
| Operating Temperature Range | -10°C to +60°C |
| Cycle Life | 500,000+ charge and discharge cycles |
| Load Life | 1,000 hours continuous operation at +60°C |
| Application Field | RTC clock backup, memory power backup, portable equipment power failure protection, solar calculator and wearable devices |
| Packaging Format | Tape & Reel / Bulk Tray |
Typical Applications
- Real-Time Clock (RTC) and SRAM memory retention during power cuts in smart meters and industrial gateways
- Battery backup power assist for IoT wireless sensor nodes, asset trackers, and Bluetooth beacons
- System shutdown data saving for automotive dashcams, digital cameras, and smart appliances
- Point-of-Sale (POS) terminals, electronic cash registers, and handheld scanners
- Solar energy harvesting energy storage buffers and auxiliary power support
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What advantages does DMS3R3224RS have compared with ordinary button batteries?
A1: It charges within seconds, supports over 500,000 charge cycles, requires no maintenance. No heavy metal hazards, and no obvious performance attenuation during service life.
Q2: Can DMS3R3224RS use reflow oven soldering?
A2: ⚠️ Important Warning: Reflow soldering is strictly forbidden. High temperature will damage internal structure. Only manual soldering is permitted.
Q3: How long can DMS3R3224RS maintain power supply for an RTC chip?
A3: It depends on RTC standby current (typically 1μA~2μA). A fully charged 0.22F supercapacitor can sustain reliable clock operation for several days to a few weeks during main power failure.
Q4: Do I need to add a current-limiting resistor for charging?
A4: Yes. The supercapacitor features low internal resistance. A small current-limiting resistor should be connected in series to avoid huge instantaneous charging current.
Q5: What is the physical dimension of DMS3R3224RS?
A5: Package size Φ6.8 mm × 1.4 mm, SMD coin tab type. Note: Some datasheets mark thickness as 1.4mm or 1.8mm, confirm based on actual batch.
Q6: Are there alternative compatible supercapacitor models?
A6: DMS3R3224R is compatible electrically. The suffix “S” stands for taped package. Check dimension if you plan direct replacement.
Q7: What working temperature range can this supercapacitor withstand?
A7: Standard operating temperature: -10°C ~ +60°C. Performance will decline outside this range.
Q8: Can DMS3R3224RS work continuously as the main power source?
A8: Not suggested. It is designed for short-term backup power for RTC and memory, not for long-lasting continuous power output.
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