Wire Wound Common Mode Choke - YLM4520 Series
The YLM4520 Series is a wire-wound common mode choke designed for effective EMI noise suppression. Featuring a Surface Mount Device (SMD) construction with a low profile, it offers high impedance and excellent frequency characteristics, along with self-electromagnetic shielding and low magnetic flux leakage. This makes it ideal for applications such as LED lighting, TV games, and monitors where common-mode noise reduction is critical.
Product Attributes
- Brand: YJY ()
- Origin: Shenzhen, China
- Material List: Ferrite Core (SINCORES or EQ), 2UEW Wire (PACIFIC or EQ), DM Tape (HENGRENXIN or EQ), Sn-Cu Solder (SHENMAO or EQ), Black Ink (BON MARK)
Technical Specifications
| Part Number | Impedance () @100MHz/0.1V (Min) | Impedance () @100MHz/0.1V (Typ) | DC Resistance (m) (Max) | Rated Current (A) (Max) | Rated Voltage (V) (Max) | Marking |
| YLM4520-301T | 100 | 300 | 45 | 3.0 | 50 | 301 |
| YLM4520-401T | 200 | 400 | 50 | 2.5 | 50 | 401 |
| YLM4520-701T | 500 | 700 | 59 | 2.2 | 50 | 701 |
| YLM4520-901T | 700 | 900 | 68 | 2.1 | 50 | 901 |
| YLM4520-102T | 800 | 1000 | 68 | 2.1 | 50 | 102 |
| YLM4520-122T | 1000 | 1200 | 74 | 2.0 | 50 | 122 |
| YLM4520-142T | 1200 | 1400 | 81 | 1.9 | 50 | 142 |
Dimensions
| Type | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) |
| YLM4520 | 4.70.5 | 4.50.5 | 2.0 | 2.7 | 0.750.2 | 1.250.2 | 1.0 |
Taping Dimensions
| Type | W (mm) | A (mm) | B (mm) | D (mm) | P (mm) | K (mm) | T (mm) | MPQ |
| YLM4520 | 16.00.3 | 6.90.3 | 8.40.3 | 7.50.1 | 120.1 | 4.20.1 | 0.400.05 | 1000 |
Reel Dimensions
| Type | W (mm) | W1 (mm) | A (mm) | B (mm) | C (mm) | D (mm) |
| YLM4520 | 3302.0 | 16.42.0 | 13.00.50 | 21.00.80 | 2.00.50 | 100Min |
Reliability Testing
Operating Temperature: -30 to +100 (Contain Heating coil)
Appearance Inspection: No external defects by visual inspection.
Terminal Strength: After soldering, between copper plate and terminals of coils, push in two directions of X, Y with standing 10N(1.02kg) for 10+/-2 sec. Terminal should not peel off.
Heat endurance of reflow soldering: Refer to figure.
Insulating resistance: Over 100 M at 100V D.C. between wire and core.
Dielectric Strength: Apply at 0.5KV 3mA for 1 minute between wire and core.
Temperature characteristics: Inductance coefficient (0~2,000) 10 / (-30 ~ +100 ).
Humidity characteristics: Inductance deviation within 10%, after 96 hours in 90~95% relative humidity at 40 2 and 1 hours drying under normal condition. A test is made under the above mentioned condition, and it is kept for 2 hours in the normal.
