Q4470-CL Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Miniature SMT Transformers

Document 606-1
Miniature SMT Transformers
These miniature transformers were developed for use
with Maxim RS-232/RS-485 interface ICs, and are suit-
able for gate drive and other power applications. They
were designed to work with the MAX250, MAX251,
MAX253 and MAX845 for providing power to the iso-
lated side of the interface, and are also specified by
Linear Technology, Sipex and others for use with their
chipsets.
They feature 1500 Vrms isolation between windings in
a miniature surface mount package. Each transformer
has a stainless steel cover that provides an excellent
surface for automated placement.
In addition to the standard parts shown, Coilcraft can
produce custom transformers with voltage, inductance
and DCR values to meet your specific requirements.
For more information, contact Coilcraft.
Part
Pri / sec
number¹ voltage
Q4470-CL_ 5 V to 5 V
S5394-CL_ 5 V to 10 V
U6982-CL_ 3.3 V to 5 V
T6437-DL_ 5 V to 5V
S5499-DL_ 5 V to 24 V
T6650-DL_ 5 V to 24 V
Volt-time
Inductance product²
min (µH) typ (Vµsec)
400 (1-3) 32 (1-3)
400 (1-3) 32 (1-3)
59 (1-3) 22 (1-3)
1000 (1-4) 134 (1-4)
160 (1-4) 48 (1-4)
176 (2-3) 48 (2-3)
DCR max (Ohms)
0.950 (1-3)
1.25 (6-4)
0.950 (1-3)
0.950 (6-4)
0.700 (1-3)
1.800 (6-4)
1.010 (1-2, 3-4) 1.955 (8-5)
0.540 (1-2, 3-4) 4.28 (8-7, 6-5)
1.015 (2-3)
8.250 (7-6)
Isolation
pri-sec
(Vrms)
Pri : sec
capacitance Turns
typ (pF)³ ratio⁴
Power⁵
(W) Size
1500 (1-4)
0.87 1 CT : 1.3 CT 0.25 C
1500 (1-4)
0.92
1 CT : 1
0.25 C
1500 (1-4)
0.93 1 CT : 2.1 CT 0.75 C
1500 (1,3-8) 1.88
1 CT : 1
1.5
D
1500 (1,3-8,6) 1.59 1 CT : 5 CT 1.0
D
1500 (2-7)
1.25
1:5
1.0
D
1. When ordering, please specify packaging code:
Q4470-CLD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (Size C: 1000 per full reel; Size D: 500 per full
reel).
B = Less than full reel. In tape, but 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. CT indicates center tap.
5. Calculated output power based on 150 kHz operating frequency. Power
varies depending on application.
6. Ambient temperature range: –40°C to +85°C
7. Storage temperature range: Component: –40°C to +85°C
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 Doc 362 “Soldering Surface Mount Components” before soldering.
Q4470-CL
S5394-CL
U6982-CL
T6437-DL
S5499-DL
T6650-DL
Chipset
Linear Linear Maxim Maxim Maxim
LT1952 LTC3900 250/251 253/845 3535E
9
9
9
9
9
9
9
9
9
9
Sipex Sipex
SP3222 SP3232
9
9
Q4470-CL
1
6
2
5
3
4
U6982-CL
1
6
2
5
3
4
S5394-CL
1
6
2
3
4
T6437-DL
1
8
S5499-DL
1
8
T6650-DL
2
7
2
2
7
3
3
6
4
5
4
5
3
6
Specifications subject to change without notice.
Please check our website for latest information.
Document 606-1 Revised 05/06/09
© Coilcraft, Inc. 2009