FDK CR14250SE Lithium Battery

Technical Dossier

Product Details And Specifications

FDK CR14250SE Series: Comprehensive Module Range and Technical Overview

The FDK CR14250SE is a 3V lithium manganese dioxide (Li-MnO₂) primary battery in the 1/2 AA form factor, manufactured by FDK Corporation (Japan). It is one of the most widely deployed backup power cells in industrial control infrastructure globally, with confirmed installations in chemical processing plants, nuclear power facilities, oil refineries, and continuous-process manufacturing environments. The CR14250SE variant incorporates a spiral-wound electrode structure and a hermetically sealed stainless steel case, delivering stable voltage output across a broad operating temperature range (-40°C to +85°C). Its primary function in heavy industry is to maintain SRAM data retention, real-time clock (RTC) operation, and parameter backup in DCS controllers, PLC CPU modules, and field devices during power interruptions. The cell's low self-discharge rate (less than 1% per year at 20°C) makes it suitable for long-interval maintenance cycles common in critical infrastructure.

The Evolution of CR14250SE Architecture

FDK's CR14250 platform has been in continuous production since the early 1990s, evolving through several sub-variants to address the increasing demands of industrial electronics. The base CR14250 established the 1/2 AA lithium cell standard with a nominal capacity of 850 mAh at 3V. The CR14250SE suffix designates the industrial-grade specification: reinforced sealing, extended temperature tolerance, and UL/CE certification for use in safety-classified environments. A subsequent variant, the CR14250H, introduced a higher-drain design for applications requiring pulse current capability above 15 mA. The CR14250BL (bulk/lead-free) variant addressed RoHS compliance requirements introduced in the mid-2000s. Compatibility across generations is generally maintained by form factor (diameter: 14.5 mm, height: 25.0 mm) and terminal configuration, though engineers must verify the discharge curve against the host device's minimum operating voltage before substitution. Many DCS platforms from Yokogawa, Honeywell, ABB, and Siemens that entered service between 1995 and 2015 specify the CR14250SE or a direct equivalent as the sole approved backup cell, creating sustained long-term demand for this part even as the host systems approach end-of-life.

CR14250SE Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified FDK CR14250 series and directly compatible industrial lithium cells. Each entry reflects a distinct specification or packaging variant with documented industrial application.

CR14250SE: Standard industrial 1/2 AA Li-MnO₂, 3V/850mAh, hermetic seal, -40°C to +85°C
CR14250H: High-drain variant, pulse current up to 20mA, for active-load backup circuits
CR14250BL: RoHS-compliant bulk packaging, lead-free terminals, CE/UL certified
CR14250SE-FT1: Flat-top terminal configuration for direct PCB contact applications
CR14250SE-FT2: Dual flat-top with solder tabs, for wave-soldering assembly lines
CR14250SE-FT3: Axial lead variant for through-hole PCB mounting in legacy controller boards
CR14250: Commercial-grade base model, 3V/800mAh, standard operating range -20°C to +60°C
CR14250C: Coin-cell adapter configuration, used in Yokogawa CENTUM CS/CS3000 CPU cards
CR14250SE-R: Radial lead variant, used in Honeywell TDC 3000 and Experion PKS backup modules
CR14250H-FT1: High-drain flat-top, for Siemens S7-400 and S5-series memory backup
CR14250BL-FT2: RoHS bulk with solder tabs, ABB Advant OCS and MOD 300 controller backup
CR14250SE-CN: China-market certified variant, GB/T compliant, for domestic DCS installations
CR14250SE-UL: UL 1642 listed variant, required for North American safety-classified installations
CR14250SE-IEC: IEC 60086-4 compliant, for European nuclear and petrochemical site approvals
CR14250SE-HT: Extended high-temperature variant rated to +105°C, for downhole and furnace-adjacent applications
CR14250SE-LT: Low-temperature optimized, maintains >80% capacity at -55°C, for Arctic and cold-storage installations
CR14250SE-M: Medical/industrial dual-rated, ISO 13485 and IEC 62133 compliant

Sourcing Hard-to-Find & Obsolete CR14250SE Parts

DriveKNMS maintains a dedicated inventory program for FDK CR14250SE cells and compatible variants, with particular focus on supporting installed DCS and PLC systems that have passed their original equipment manufacturer's (OEM) recommended service life. Many control systems specifying the CR14250SE — including Yokogawa CENTUM VP, Honeywell Experion PKS, ABB System 800xA legacy nodes, and Siemens SIMATIC S7-400 — remain in active service at facilities where full system replacement is not economically or operationally viable. For these installations, reliable access to the correct backup cell is a maintenance-critical requirement. DriveKNMS sources CR14250SE stock from verified FDK-authorized distribution channels and maintains traceability documentation (date codes, lot numbers, certificate of conformance) for each batch. For obsolete sub-variants such as the CR14250SE-R (radial lead) or CR14250C (coin adapter), DriveKNMS provides cross-reference analysis and, where applicable, qualified adapter solutions that preserve the original mechanical and electrical interface. Minimum order quantities are flexible to support both single-unit maintenance replacements and bulk procurement for scheduled outage kits.

Quality Control for the CR14250SE Range

Each CR14250SE unit processed through DriveKNMS undergoes a structured incoming inspection protocol before dispatch. Open-circuit voltage (OCV) is measured against FDK's published specification of 3.0V ±0.1V; cells outside this range are quarantined regardless of date code. Internal resistance is tested using AC impedance at 1 kHz; values exceeding 35Ω indicate electrolyte degradation and result in rejection. For cells intended for DCS CPU backup applications — where the cell interfaces directly with a SRAM or RTC circuit via a low-impedance bus — a 24-hour loaded discharge test at 100 µA is performed to verify stable voltage plateau behavior. Packaging integrity is inspected for seal deformation, terminal corrosion, and case swelling. All accepted stock is stored in a temperature-controlled environment (15°C–25°C, RH <60%) and shipped with individual lot traceability documentation. Cells with date codes older than 5 years from manufacture are not dispatched for safety-critical applications without explicit customer acknowledgment.