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MS614SE-FL28E
MS614SE-FL28E
| Part Number | MS614SE-FL28E |
|---|---|
| Manufacturer | Seiko Instruments (SII) |
| Category | Battery Products > Recharging Batteries (Secondary) > Coin Cell / Button Cell Batteries |
| Description | Rechargeable MS (Manganese Silicon) Lithium Coin Cell Battery, 3.0V, 3.4mAh, SMT Tabbed Terminal Assembly (FL28E). |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
MS614SE‑FL28E is Seiko’s 3 V rechargeable MS‑chemistry coin battery with factory‑welded FL28E SMT solder tabs. At only 6.8 mm ×1.4 mm, it supplies 3.4 mAh capacity for long‑term backup power. It features stable 3.0 V output, good overcharge resistance and long cycle life under trickle charging. Suitable for RTC clock, SRAM/NVRAM backup, IoT sensors and wearable devices.
Core Advantages
Ultra‑Compact High‑Density Form Factor
6.8 mm × 1.4 mm coin cell, high energy density for space‑constrained high‑density PCB designs.
Long Cycle & Trickle‑Charge Tolerance
100 cycles @100% DOD, 1000+ cycles @10% DOD. Stable performance under continuous trickle‑charge condition.
Pre‑mounted FL28E SMT Tabs
Factory‑fitted FL28E solder tabs for PCB mounting. Reflow soldering prohibited; only manual iron soldering is permitted.
Flat Voltage & Low Self‑Discharge
Stable 3.0 V output, ultra‑low self‑discharge. Reliable backup power from -20℃ to +60℃ for power‑fail events.
Key Specifications
| Brand | Seiko Instruments (SII) |
|---|---|
| RoHS Status | RoHS Compliant / EU Directive Compliant |
| Warranty | 1‑Year Standard Quality Warranty |
| Package / Case | Coin Cell 6.8mm x 1.4mm (MS614 Size) with FL28E SMT Tabs |
| Mounting Type | Manual Tab Soldering (Reflow Prohibited) |
| Surface Marking / Silkscreen | MS614SE / SII Logo, Marking |
| Battery Chemistry | Rechargeable Lithium Manganese Silicon (MS) |
| Nominal Voltage | 3.0 V |
| Nominal Capacity | 3.4 mAh (Discharged down to 2.0V) |
| Standard Charge Voltage | 3.1 V to 3.3 V (Recommended 3.1 V ± 0.15 V) |
| Max Charging Current | 0.015 mA (15µA) |
| Continuous Discharge Current | 0.015 mA (15 µA) Standard |
| Max Continuous Discharge Current | 0.15 mA |
| Cycle Life Performance | 100 cycles (100% DOD), > 1000 cycles (10% DOD) |
| Operating Temperature Range | -20°C to +60°C |
| Dimensions (Body Only) | Diameter: 6.8 mm | Height: 1.4 mm |
| Packaging Format | Tape & Reel / Tray Packaging |
Precautions
- Strictly prohibit reflow soldering: High‑temperature reflow process will damage internal cell. Only manual soldering iron on tabs is allowed.
- Working current limit: Designed for micro‑ampere trickle charge & discharge. Do not apply large‑current load.
- Over‑discharge caution: Deep over‑discharge may recover partially but will shorten service life. Avoid discharging below 2.0V.
- Charging requirement: Use recommended charging voltage 3.1V ~ 3.3V. Do not exceed maximum charge / discharge current rating.
- Operating temperature range: -20℃ ~ +60℃. Do not use outside this temperature scope.
Typical Applications
- Real‑Time Clock (RTC) power backup in smart meters, security systems, and network routers
- SRAM and non‑volatile memory data preservation in IoT gateways and portable electronics
- Ultra‑compact wearable devices, smart rings, health trackers, and medical monitors
- Backup power modules in digital cameras, handheld barcode scanners, and wireless beacons
- Embedded microcontrollers, smart home sensors, and industrial telemetry systems
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, YFH Standard |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, bulk pricing and custom versions with solder tabs, pins and wire assemblies, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What is the main difference between MS621FE and MS614SE?
A1: Both are Seiko 3V MS‑series rechargeable batteries. MS614SE is thinner (1.4 mm vs 2.1 mm) with 3.4 mAh capacity, for ultra‑thin space‑limited PCB designs.
Q2: What does the “‑FL28E” suffix stand for?
A2: FL28E denotes factory‑pre‑welded SMD surface‑mount solder tabs, defining terminal geometry for direct PCB soldering.
Q3: How should I design the charging circuit for MS614SE‑FL28E?
A3: Use regulated 3.1V‑3.3V charging voltage (3.1V recommended). Add series resistor to limit max charging current to 15 μA.
Q4: Can I get custom tab or cable assembly versions?
A4: Yes, custom solder tabs, pin terminals and wire harness assemblies are available. Send your specifications via inquiry form.
Q5: Can I use MS614SE‑FL28E to replace CR2032 / CR1220 primary coin cell?
A5: Not direct drop‑in replacement. CR series are disposable lithium primary cells. MS614SE‑FL28E is rechargeable MS‑chemistry cell with different charge requirements and lower continuous current rating.
Q6: Are there other suffix options for MS614SE base cell?
A6: MS614SE bare cell (no tabs), MS614SE‑FL28E (SMD flat tabs). Different suffix only changes terminal style, core electrical parameters stay identical.
Q7: What are typical internal impedance and weight of MS614SE‑FL28E?
A7: Typical internal impedance ≈80 Ω; unit weight approx 0.17 g.
Q8: What soldering rules must I follow for FL28E tabs?
A8: Reflow soldering is strictly forbidden. Only manual soldering iron on metal tabs. High‑temperature reflow will permanently damage the battery core.
Q9: What is the operating temperature range?
A9: Rated working temperature: -20 ℃ ~ +60 ℃. Do not charge or discharge outside this temperature window.
Q10: Can two MS‑series batteries be used in parallel or series?
A10: Series connection is not recommended. Parallel connection requires tightly matched cell parameters to avoid imbalance and shorten service life.
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