High Performance Planar Chokes: 39A Current 1500V Reinforced Isolation 1.6MHz SRF Optimized

Precision Noise Suppression at 1.6MHz SRF

Switch-mode power supplies above 500kHz face vicious EMI spikes near the self-resonant frequency (SRF). Unlike conventional toroidal RF inductors, our planar architecture achieves controlled SRF at 1.6MHz (TPER25-161Y model) with impedance peaks of 400Ω – 2× higher than industry averages. This translates to:

• 30% lower conducted emissions in 65W USB-PD adapters (per CISPR 32 tests)
• Elimination of re-spins caused by 1-2MHz band failures in GaN-based designs
• Compatibility with high-speed EMI filter stages near IC drivers

Design Tip: Pair with our low-capacitance power line common mode chokes for full-spectrum noise suppression.

1500V Reinforced Isolation: Safety by Design

Medical and automotive systems demand fail-safe isolation. Our 1500V reinforced isolation choke exceeds IEC 60601-1 and ISO 6469-3 requirements through:

• Triple-insulated windings with >8.0mm creepage/clearance
• 100% production HIPOT testing at 1500VAC/60s (zero leakage)
• -40°C to +150°C operational stability for engine bay environments

Real-world results: Ultrasound main power supplies reduced leakage current to 75μA (40% below BF-class limits) using TPER25-102Y models.

RoHS3 Compliance Without Compromise

Global sourcing teams prioritize regulatory certainty. As a RoHS3 compliant planar inductor, we provide:

• Full material disclosure (Br/Cl <500ppm per IEC 111/2015)
• On-demand access to Notified Body certificates (SGS TÜV ID:2024-XXXX)
• Drop-in replacement for legacy parts failing Directive 2015/863 audits