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Miniature Surface Mount
Transformers

New RoHS part numbers are shown. These redesigned parts are more cost effective than the non_RoHS parts. The next to the last character is now L to indicate RoHS compliance. (Old data sheet can be viewed here.)

  • Designed specifically for use with Maxim RS-232 / RS-485 interface ICs
  • Also specified by Linear Technology and Sipex
  • Suitable for gate drive and other power applications
  • 1500 Vrms isolation between windings
  • Miniature surface mount package
  • Stainless steel cover serves as an excellent pick and place surface
  • RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations.

Photo    Pricing    Materials declaration Q4470  S5394  S5499  T6437  T6650  U6982

PDF data sheet    3D models Q4470  S5394  S5499  T6437  T6650  U6982

SPECIFICATIONS

Dimensions  

Tape and reel

  Chipset

Linear
LT1952

Linear
LTC3900

Maxim
250/251

Maxim
253/845

Maxim
3535E

Sipex
SP3222

Sipex
SP3232
 Q4470-CL      
 S5394-CL             
 U6982-CL      
 T6437-DL            
 S5499-DL            
 T6650-DL             

Q4470-CL_ 5 V to
5 V		 400 (1-3) 27 (1-3) 0.950
(1-3)
1.25
(6-4)		 1500
(1-4)		 0.87 C 0.25 1 CT : 1.3 CT
S5394-CL_ 5 V to
10 V		 400 (1-3) 27 (1-3) 0.950
(1-3, 6-4)		 1500
(1-4)		 0.92 C 0.25 1 CT : 1
U6982-CL_ 3.3 V to 
5 V		 59 (1-3) 22 (1-3) 0.700
(1-3)
1.800
(6-4)		 1500
(1-4)		 0.93 C 0.75 1 CT : 2.1 CT
T6437-DL_ 5 V to
5 V		 1000 (1-4) 134 (1-4) 1.010
(1-2, 3-4)
1.955
(8-5)		 1500
(1,3-8)		 1.88 D 1.5 1 CT : 1
S5499-DL_ 5 V to
24 V		 40 (2-1) 48 (1-4) 0.540
(2-1, 4-3)
4.28
(5-6, 7-8)		 1500
(1,3-8,6)		 1.59 D 1.0 1 CT : 5 CT
T6650-DL_ 5 V to
24 V		 176 (2-3) 48 (2-3) 1.015
(2-3)
8.250
(7-6)		 1500
(3-6)		 1.25 D 1.0 1 : 5
1 When ordering, please specify packaging code: e.g. Q4470-CLD
  Packaging: D = 13" reel, machine-ready 
EIA-481 embossed plastic tape (C size: 1000 parts per full reel; D size: 500 parts per full reel).
B = Less than full reel
In tape, not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead.
2 Volt-time product is based on core area, number of primary turns and 4800 Gauss flux density.
3 Capacitance measured from full primary to full secondary at 200 kHz.
4 Calculated output power is based on 150 kHz operating frequency. Power rating varies depending on application.
5 CT indicates center tap
6 Ambient temperature range: –40°C to +85°C
7 Storage temperature range: Component: –40°C to +85°C
T&R packaging: –40°C to +80°C
8 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
9 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.
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Updated: December 21, 2011