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MS412FE-FL26E
MS412FE-FL26E
| Part Number | MS412FE-FL26E |
|---|---|
| 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, 1.0mAh, Micro SMT Tabbed Terminal (FL26E). |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The MS412FE‑FL26E is SII ultra‑small 3.0V rechargeable lithium manganese silicon coin battery with factory‑welded FL26E SMT tabs. Designed for micro‑size electronics needing critical backup power, it delivers 1.0mAh capacity in compact 4.8×1.2mm footprint. Ideal for RTC, SRAM/NVRAM retention, wearables, medical sensors and IoT micro‑controller units.
Core Advantages
Ultra‑Compact Form Factor
Tiny 4.8mm diameter & 1.2mm height, saves PCB space for high‑density layouts.
Excellent Over‑Charge Tolerance & Long Cycle Life
Handles continuous trickle charging; 100+ cycles@100% DOD, 1000+ shallow cycles@10% DOD.
Factory SMT Tabbed Terminal (FL26E)
Pre‑welded tabs. Reflow soldering is strictly forbidden; only manual soldering iron on tabs is allowed to avoid seal thermal damage.
Stable 3.0V Output & Low Self‑Discharge
Reliable voltage output with low self‑discharge for system backup, working from -20℃ to +60℃.
Key Specifications
| Brand | Seiko Instruments (SII) |
|---|---|
| RoHS Status | RoHS Compliant / EU Directive Compliant |
| Warranty | 1‑Year Standard Quality Warranty |
| Package / Case | Micro Coin Cell 4.8mm x 1.2mm (MS412 Size) with FL26E SMT Tabs |
| Mounting Type | PCB Tab Manual Soldering |
| Surface Marking / Silkscreen | MS412FE / SII Logo,Marking |
| Battery Chemistry | Rechargeable Lithium Manganese Silicon (MS) |
| Nominal Voltage | 3.0 V |
| Nominal Capacity | 1.0 mAh (Discharged down to 2.0V) |
| Max Charge Current | 0.025mA |
| Standard Charge Voltage | 2.8 V to 3.3 V |
| Continuous Discharge Current | 0.005 mA (5 µA) Standard |
| Max Continuous Discharge Current | 0.10 mA |
| Cycle Life Performance | 100 cycles (100% DOD), > 1000 cycles (10% DOD) |
| Operating Temperature Range | -20°C to +60°C |
| Dimensions (Body Only) | Diameter: 4.8 mm | Height: 1.2 mm |
| Typical Internal Impedance | ≈120 Ω |
| Typical Weight | 0.12 g |
| Packaging Format | Tape & Reel / Tray Packaging |
Precautions
- Strict Charging Control: Keep charging voltage within 2.8V‑3.3V, maximum charge current limited to 0.025mA. Exceeding 3.3V will cause gas generation, swelling or cell degradation. A current‑limiting resistor must be used in charging circuit.
- Manual Soldering Only: Reflow soldering is strictly prohibited. Do not apply heat directly to battery can. Only solder on FL26E pre‑welded tabs to prevent thermal damage to internal seal.
- Avoid Terminal Short‑Circuits: Isolate positive and negative terminals during handling. Direct short‑circuit will generate large discharge current and damage internal battery structure.
- Polarity Verification: Double‑check PCB pad orientation and schematic polarity before assembly. Reverse charging will permanently destroy battery chemistry.
Typical Applications
- Real‑Time Clock (RTC) power backup in ultra‑compact smart meters, medical wearables, and IoT sensors
- SRAM and non‑volatile memory data backup in handheld instruments, wireless beacons, and smart keys
- Hearing aids, personal health monitoring devices, and wearable biosensors
- Backup power modules in digital cameras, smart home controllers, and micro telemetry units
- Compact embedded microcontrollers, asset trackers, and portable electronics
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 MS412FE, MS614SE, and MS621FE?
A1: All belong to Seiko 3V rechargeable MS lithium family. MS412FE is the micro‑sized option (4.8×1.2mm,1.0mAh). MS614SE (6.8×1.4mm,3.4mAh) and MS621FE (6.8×2.1mm,5.5mAh) provide higher capacity for larger‑size designs.
Q2: What does the “FL26E” suffix mean for MS412FE‑FL26E?
A2: “FL26E” stands for factory‑welded SMT tab terminals for direct PCB soldering on this coin cell.
Q3: What suffix variants are available for MS412FE base cell?
A3: Bare MS412FE without tabs; MS412FE‑FL26E with FL26E SMT tabs. Suffix only changes terminal structure; electrical parameters remain identical.
Q4: How to design charging circuit for MS412FE‑FL26E?
A4: Supply regulated voltage 2.8V‑3.3V, add series current‑limiting resistor to keep max charge current ≤0.025mA.
Q5: Can MS412FE‑FL26E replace CR‑series primary coin cell?
A5: Not direct drop‑in replacement. CR is disposable primary lithium cell. MS412FE‑FL26E is rechargeable, requiring special charging circuit and limited low‑current rating.
Q6: What are soldering requirements for FL26E tabs?
A6: Reflow soldering is strictly forbidden. Only manual soldering iron on metal tabs. High temperature will permanently damage battery core.
Q7: Can I get custom solder tabs, pins or cable assemblies?
A7: Custom terminal configurations are available. Submit your requirements via quick inquiry form for custom battery solutions.
Q8: Can MS‑series cells work in series or parallel?
A8: Series connection is not recommended. Parallel usage requires well‑matched cell parameters to avoid imbalance and shortened service life.
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