SUMIDA: Product News

PIN Power Inductor: RD55D82

July 9th 2019

Sumida has developed a ferrite type pin mount inductor RD55D82 (L×W×H:6.0×6.0×8.5mm Max.). Like RCH4764,it is magnetically unshielded. As a DC-DC Converter inductor, it is ideally used in printer, LCD TV, LED driver, copy machine, smart meter etc.

Meanwhile, there is a heat shrinkable tube on RD55D82 for protection, which is resistant to high temperature up to 125°C, and allows customers to have enough leeway in developing thermal design.

Key Features:

  • Ferrite core construction
  • Magnetically unshielded
  • Operating temperature range: -40℃~+125℃ (including coil’s self temperature rise)

 

Applications:

Printer, LCD TV, LED driver, copy machine, smart meter etc.

Parts List:

Part Name Inductance [Within] (μH) ※1 D.C.R. at 20℃ (A) Max. (Typ.) (mΩ) Saturation Current (A) Max.(Typ.) ※2 Temperature Rise Currrent
(A) ※3
RD55D82NP-3R3MB 3.30 ± 20% 22.00 (17.00) 4.10 (5.10) (4.70)
RD55D82NP-4R7MB 4.70 ± 20% 32.00 (25.00) 3.90 (5.10) (3.60)
RD55D82NP-6R8MB 6.80 ± 20% 45.00 (35.00) 3.20 (4.00) (2.90)
RD55D82NP-100MB 10.00 ± 20% 61.00 (47.00) 2.65 (3.30) (2.60)
RD55D82NP-150MB 15.00 ± 20% 98.00 (75.00) 2.25 (2.80) (1.90)
RD55D82NP-220MB 22.00 ± 20% 136 (105) 1.75 (2.20) (1.70)
RD55D82NP-330MB 33.00 ± 20% 195 (150) 1.45 (1.80) (1.40)
RD55D82NP-470MB 47.00 ± 20% 250 (190) 1.45 (1.80) (1.40)
RD55D82NP-680MB 68.00 ± 20% 345 (265) 1.04 (1.30) (1.00)
RD55D82NP-101KB 100 ± 10% 556 (445) 0.80 (1.00) (0.75)
RD55D82NP-151KB 150 ± 10% 850 (680) 0.72 (0.90) (0.56)
RD55D82NP-221KB 220 ± 10% 1250 (680) 0.56 (0.70) (0.47)
RD55D82NP-331KB 330 ± 10% 1880 (1500) 0.45 (0.56) (0.42)
RD55D82NP-471KB 470 ± 10% 2500 (2000) 0.40 (0.50) (0.35)
RD55D82NP-681KB 680 ± 10% 4000 (3200) 0.34 (0.42) (0.28)
RD55D82NP-102KB 1000 ± 10% 5000 (4000) 0.25 (0.31) (0.27)

※1 Measuring condition at 100kHz 0.25V.
※2 Saturation current: This indicates the value of DC current when the inductance is 10% lower than its initial value.
※3 Temperature rise current: The value of DC current when coil’s self temperature rise is △T=40℃. (Ta=20℃)

 

Production Stage:

In mass production

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