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39A High Current SMT Choke 50°C Rise Certified EMI-Robust Common Mode Filter

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Min. Order: 1
Transportation: Ocean,Land,Air,Express
Port: Xi'an,Shanghai

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Description

Product Attributes

Model No.: TPER

Brand: FERRTX

Place Of Origin: China

Types Of: Emi Filter

Filtering Technology: Band Stop

Impedance: Not Applicable

Filter Type: Power Line

Installation Method: Surface Mount

Tolerance: ±35%

Current Rating (A): 39A @50°C rise

Isolation Voltage (Vrms): 1500V

Self Resonant Frequency (MHz): 1.6MHz

Impedance @ SRF (Ω): 400Ω

DC Resistance (mΩ): 1.4 max

Operating Temp Range: -40°C to +150°C

Packaging & Delivery

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Supply Ability & Additional Information

Transportation: Ocean,Land,Air,Express

Place of Origin: China

Supply Ability: 2~8weeks

Certificate: RoHS/ISO/UL/CE/IATF 16949/CNAS

Port: Xi'an,Shanghai

Product Description

When pushing power systems beyond 30A, engineers battle a triple threat: ferrite saturation crippling noise suppression, thermal runaway from excessive DCR losses, and PCB real estate consumed by bulky filters. Our high-density SMT common mode chokes conquer all three:

39A continuous current in 30.5×27mm ER25 footprint (industry’s highest current density)
Certified 50°C rise current per IEC 62368 thermal benchmarks (no derating needed at 85°C ambient)
Integrated EMI filtering with 400Ω impedance peaks at 1.6MHz SRF – slashing external filter stages

39A High Current SMT Choke: Power Density Redefined

Conventional chokes derate sharply above 20A. Our planar design leverages:

Oxygen-free copper windings reducing DCR by 60% vs. round wire (1.4mΩ max @ TPER25-161Y)
Ferrite Core cooling slots enabling 39A RMS in 1.2W/in³ power density (ideal for 48V server PSUs)
Zero-saturation up to 42A tested per MIL-STD-202G Method 204

Application Spotlight: Replaced 3× parallel chokes in 10kW solar inverters, cutting BOM cost 35%

50°C Rise Current: Thermal Certainty Built-In

Ambient temperatures lie. Our 50°C rise current SMT inductor delivers uncompromised reliability:

ΔT=50°C certification at full rated current (e.g., 39A for TPER25-161Y per page 1 notes)
Infrared-validated hotspots <90°C @ 105°C ambient (tested in sealed EV charger enclosures)
Material aging curve guarantees >100,000 hours at 150°C core temperature

SMT Common Mode Choke: EMC Simplified

Why cascade multiple filters? Our integrated solution provides:

Asymmetric impedance (400Ω DM @ 1.6MHz vs. 10Ω CM) targeting differential noise
<3pF inter-winding capacitance preventing high-frequency bypass (critical for CAN FD/CAN XL)
Direct replacement for EMI Filter modules in DC/DC converters

System	Challenge	Our Solution	Results
Server 48V/GPU	12V/100A VRM ripple >100mVpp	39A high current SMT choke	<25mVpp noise @ 80A load
EV Powertrain	CM noise failing CISPR 25 Class 5	SMT common mode choke	6dB margin at 1.6MHz band
Industrial PLC	Derating at 85°C ambient	50°C rise current inductor	Full 39A without de-rating

Pair with our low-ESR power line common mode chokes for MIL-STD-461 compliance.

With a relentless 39A continuous current, certified 50°C rise reliability, and precision 1.6MHz SRF targeting, FERRTX planar SMT chokes are engineered for mission-critical power systems where failure is not an option.

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