Q4470-CL

Document 606-1
Miniature SMT Transformers
These miniature transformers were developed for use with
Maxim RS-232/RS-485 interface ICs, and are suitable
for gate drive and other power applications. They were
designed to work with the MAX250, MAX251, MAX253
and MAX845 for providing power to the isolated 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.
Volt-time
DCR max (Ohms)
Part
Pri / sec
Inductance product2
number1 voltage
min (µH)typ (Vµsec)
pri sec
IsolationPri / secPri : sec
pri-sec capacitanceTurns
typ (pF)3
ratio4
(Vrms)
Q4470-CL_ 5 V to 5 V
400 (1-3) 32 (1-3)
S5394-CL_ 5 V to 10 V 400 (1-3) 32 (1-3)
U6982-CL_ 3.3 V to 5 V 59 (1-3) 22 (1-3)
0.950 (1-3)
0.950 (1-3)
0.700 (1-3)
1500 (1-4)
1500 (1-4)
1500 (1-4)
T6437-DL_ 5 V to 5V
S5499-DL_ 5 V to 24 V
T6650-DL_ 5 V to 24 V
1.010 (1-2, 3-4) 1.955 (8-5)
1500 (1,3-8)
0.540 (1-2, 3-4) 4.28 (8-7, 6-5) 1500 (1,3-8,6)
1.015 (2-3)
8.250 (7-6)
1500 (2-7)
1000 (1-4) 134 (1-4)
160 (1-4) 48 (1-4)
176 (2-3) 48 (2-3)
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
Tape and reel 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.
1.25 (6-4)
0.950 (6-4)
1.800 (6-4)
Power5
(W)
Size
0.87
0.92
0.93
1 CT : 1.3 CT 0.25
C
1 CT : 1 0.25C
1 CT : 2.1 CT 0.75
C
1.88
1.59
1.25
1 CT : 11.5 D
1 CT : 5 CT 1.0
D
1 : 5 1.0D
Chipset
Linear Linear MaximMaximMaxim Sipex Sipex
LT1952 LTC3900250/251 253/845 3535E SP3222 SP3232
Q4470-CL



S5394-CL
U6982-CL



T6437-DL

S5499-DL
T6650-DL
Q4470-CL
1
Pri 2
3
U6982-CL
6
1
5 Sec
Pri 2
3
4
5 Sec
S5499-DL
8
8
Pri 32
4
1
Sec
5
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Pri 2
3
4
1
7
Sec
6
5
6
Sec
Pri 2
3
4
T6437-DL
1
S5394-CL
6
4
T6650-DL
2
7
Sec
Pri
3
6
Document 606-1 Revised 05/06/09
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 606-2
Miniature SMT Transformers
C Size
Dot above
pin 1
0.260
max
6,60
Q4470-CL, S5394-CL, U6982-CL
0.215
max
5,46
0.004 / 0,10
Recommended
Land Pattern
0.050
sq
1,27
0.275
max
6,99
0.100
2,54
0.100
2,54
1
6
0.023
0,60
1
0.283
min
7,20
0.350
max
8,89
4
3
0.375
9,53
0.039
min
1,0
Bottom View
Weight 510 – 550 mg
Terminations Tin-silver over tin over nickel over phos bronze
Packaging 1000 per 13″ reel Plastic tape: 16 mm wide,
0.34 mm thick, 12 mm pocket spacing, 5.33 mm pocket depth
D Size
Dot above
pin 1
0.344 max
8,75
S5499-DL, T6437-DL, T6650-DL
0.215
max
5,46
0.004 / 0,10
0.415
min
10,55
0.500 max
12,70
0.500
12,70
0.075
1,905
0.023
0,60
Recommended
Land Pattern
1
8
1
0.050
1,27
0.100
2,54
0.400
max
10,16
0.100
2,54
4
5
0.035
min
0,90
Bottom View
Weight 0.98 – 1.1 g
Terminations Tin-silver over tin over nickel over phos bronze
Tape and reel 500 per 13″ reel Plastic tape: 24 mm wide,
0.36 mm thick, 16 mm pocket spacing, 6.13 mm pocket depth
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 606-2 Revised 05/06/09
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.