Engineering Datasheet: SMT Battery Contact, Direct Footprint Replacement for Keystone 57
Securing power for cylindrical cells on FR4 boards requires flat SMT pads. The Jiatel JT-BC-AA-KS57 is a 1:1 direct footprint replacement for Keystone 57. This SMT contact allows hardware engineers to execute seamless board-level integration. You do not need to alter existing PCB pad layouts. You also keep your current solder stencil designs intact.
Verified Board-Level Parameters
| Target Cross-Reference | Direct Footprint Replacement for Keystone 57 |
| Mounting Architecture | Surface Mount Technology (SMT) |
| PCB Pad Pitch (“L” Dim) | 48.30mm (AA) | 24.60mm (CR2) |
| Base Pad Footprint | 15.57mm Minimum Pad Length |
| Base Metallurgy | T=0.25mm Spring Steel | Nickel Plated |
Target Deployments
- Industrial IoT: SMT sensor nodes utilizing CR2 lithium cells.
- Medical Diagnostics: Compact patient monitoring PCBA modules.
- Consumer Electronics: High-drain automated assembly devices.
Metallurgical Rigidity & Solder Joint Integrity
We stamp the JT-BC-AA-KS57 from rigid T=0.25mm Spring Steel. This precise metal thickness provides absolute structural rigidity. The contact dimple will not yield under constant axial pressure. We finish the entire assembly with high-density Nickel Plating. This plating maximizes solder paste wettability during the reflow process. It eliminates the risk of cold solder joints on your SMT line.
NPI PCB Footprint Audit & SLA Directive
Board-level assembly demands strict adherence to pad dimensions and axial spacing. Layout errors cause reflow misalignment and battery fit issues. Our engineering rules strictly prohibit using unverified 3D models for layout checks. We execute footprint validation exclusively through official [Technical Datasheets]. We also rely on dimensionally controlled [2D Footprint Specs].
Please confirm that our SMT contact matches your land pattern needs. You can do this by engaging our Senior NPI Engineering Team. Submit your board constraints directly to our technical desk: NPI Engineering Queue. We will dispatch matched, production-ready PDF drawings within 12 working hours.
