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1. Project Background

The client’s terminal power solution has long adopted the CSBX1265-330M high-current shielded power inductor from a well-known peer brand. The original material delivers stable performance and good compatibility, yet it comes with persistent drawbacks including high procurement costs and limited bargaining space. To optimize the overall BOM cost and stabilize the supply chain, the client urgently needed a domestically produced pin-to-pin alternative with fully compatible parameters and zero performance difference, enabling seamless replacement without PCB modification or circuit adjustment.

2. Selection Pain Points

The client evaluated multiple domestic inductors of the same specification in the early stage, but most failed to meet mass production requirements. Most alternative products had inconsistent electrical parameters, including mismatched inductance, DCR and saturation current, resulting in abnormal temperature rise, poor filtering effect and unqualified EMC performance after application. In addition, many low-cost alternatives suffered from unstable batch consistency. The core requirement was 100% parameter matching, zero performance attenuation, reliable mass production and substantial cost reduction.

3. Gujing Replacement Solution

Gujing provided the targeted replacement model GAFF128065HMT330 for the original CSBX1265-330M inductor. Through line-by-line specification comparison and actual electrical parameter testing, the model achieves 100% full parameter matching and completely seamless replacement. No board revision, circuit debugging or re-certification is required, which greatly saves the client’s R&D time and revision costs.

Core advantages of Gujing’s solution:

• Fully equivalent parameters: Inductance value, DCR, saturation current, temperature rise current and operating temperature are fully aligned with the original model. Electrical performance, load capacity and filtering effect remain completely consistent.

• Reliable and consistent craftsmanship: Adopting flat wire winding and magnetic shielding structure, the inductor features low loss, low internal resistance and strong EMI suppression capability. It maintains stable performance under wide-temperature working conditions and meets industrial-grade reliability standards for power supply, industrial control and smart device applications.

• Superior cost performance: With identical performance and mass production stability, the unit cost of Gujing’s inductor is less than half of the peer brand, realizing significant BOM cost reduction.

• Stable domestic supply chain: Supported by self-owned production bases and sufficient spot inventory, Gujing provides stable mass delivery and customized services. Professional FAE teams offer full-process support including model selection, sample testing and mass production follow-up.

4. Project Application Results

The new Gujing model has passed all customer verification tests, including board mounting test, aging test and mass trial production. The equipment temperature rise, current load and anti-interference performance are fully consistent with the original product with zero performance loss, and it is perfectly compatible with existing SMT production processes.

The replacement project brought two major core benefits:

1. Effective cost optimization: With identical performance and reliability, the procurement cost is reduced by nearly 50%, greatly improving the client’s product market competitiveness.

2. Optimized supply chain system: The client successfully got rid of reliance on a single brand. The domestic high-quality alternative ensures more stable delivery, comprehensive technical support and faster after-sales response.

5. Case Summary

High-quality domestic inductor replacement is not downgrade substitution, but an upgraded solution with equivalent performance, lower cost and more stable supply. Gujing GAFF series high-current shielded inductors precisely match mainstream specifications of imported and well-known brand products. Based in domestic intelligent manufacturing, Gujing eliminates brand premium and helps customers achieve a win-win situation of stable performance and significant cost reduction.

Gujing Electronics provides professional precise replacement services for full-series power inductors, including specification comparison, free sampling and application testing support, helping customers complete domestic substitution and achieve cost reduction and efficiency improvement.