Engineering Datasheet: THM Coin Cell Retainer, Direct Footprint Replacement for Keystone 3039
Securing ultra-thick, high-capacity CR2477 coin cells in high-vibration environments requires robust through-hole integration. The JIATEL JT-BCK-2477-S3039 is a direct footprint replacement for the Keystone 3039. This retainer deploys a dual-pin THM architecture, providing extreme resistance against the lateral shear forces generated by heavy battery masses. You can execute seamless board-level integration for CR2477 backup cells without altering existing PCB drill hole coordinates.
Verified Board-Level Parameters
| Target Cross-Reference | Direct Footprint Replacement for Keystone 3039 |
| Mounting Architecture | Through-Hole Mount (THM) Dual Pin |
| Axial Pin Pitch | 25.40mm Spread (Requires 2-Ø1.85mm Drills) |
| Negative Pad Constraint | 4.00mm Square Minimum (Center Pad) |
| Base Metallurgy | T=0.25mm Phosphor Bronze | Nickel Plated |
Target Deployments
- Industrial Automation: Heavy-duty PLC modules requiring long-life, wave-soldered RTC backup.
- Smart Metering: Primary power retention for gas and water utility meters.
- Asset Tracking: Telematics and GPS tracking nodes exposed to constant mechanical shock.
Metallurgical Rigidity & Wave Soldering Integrity
We stamp the JT-BCK-2477-S3039 from rigid T=0.25mm Phosphor Bronze. The top clamping arms maintain continuous pressure on the massive 7.7mm thick CR2477 cells, preventing voltage drop during mechanical impact. We finish the THM tails with high-density Nickel Plating. This maximizes wave solder wettability across the 25.40mm pin layout. It eliminates the risk of cold solder joints and physical detachment.
NPI PCB Footprint Audit & SLA Directive
Through-hole integration demands strict adherence to pin pitch dimensions and drill tolerances. Layout errors cause pin bending and wave soldering failures. Our engineering rules strictly prohibit the distribution of unverified digital mockups. We execute structural footprint validation exclusively through official [Technical Datasheets]. We rely on dimensionally controlled [2D Footprint Specs].
Confirm that our THM retainer matches your FR4 drill pattern. We must deploy our Senior NPI Engineering Team to ensure a 1:1 footprint replacement. Submit your board constraints directly to our technical desk: NPI Engineering Queue. We will dispatch matched, production-ready PDF drawings within 12 working hours.
