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參數資料
| 型號： | GA3157-ASD |
| 廠商： | COILCRAFT INC |
| 元件分類： | 功率/饋電變壓器 |
| 英文描述： | POWER TRANSFORMER |
| 封裝： | ROHS COMPLIANT |
| 文件頁數： | 1/1頁 |
| 文件大小： | 153K |
| 代理商： | GA3157-ASD |
Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
SMT Power Transformer
Document 686
Document 686
Revised 10/16/09
For Analog Devices ADM2482E and
ADM2487E RS-485 Transceivers
Core material
Ferrite
Terminations
RoHS compliant tin-silver over tin over nickel over
phos bronze. Other terminations available at additional cost.
Weight
1.0 g
Ambient temperature
–40°C to +85°C
Storage temperature
Component: –40°C to +85°C.
Packaging: –40°C to +80°C
Resistance to soldering heat
Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)
1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging
600 per 13
″
reel; Plastic tape: 24 mm wide,
0.37 mm thick, 16 mm pocket spacing, 6.1 mm pocket depth
PCB washing
Only pure water or alcohol recommended
Leakage
inductance
4
max (μH)
1.14
Volt-time
product
5
(V-μsec)
34.4
Pri
/
sec
voltage
5 V to 3.3 V
Inductance
2
min (μH)
45.6
DCR max (Ohms)
3
1/2 pri
0.130
Power
6
Turns ratio
(W)
7.2
Part number
1
GA3157-AL_
1/2 sec
0.155
pri
:
sec
1
:
0.88
1. When ordering, please specify
termination
and
packaging
codes:
GA3157-A
LD
Termination: L
= RoHS compliant tin-silver over tin over nickel over
phos bronze.
Special order: T =
RoHS tin-silver-copper (95.5/4/0.5) or
S
= non-RoHS tin-lead (63/37).
Packaging:
D
= 13
″
machine ready reel. EIA-481 embossed plastic
tape (600 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. Inductance is tested between pins 4 and 3 at 500 kHz, 0.5 Vrms, 0 Adc.
3. DCR is for each half of the primary and secondary.
4. Leakage inductance is for the primary with both windings connected in
series and with the secondary windings shorted.
5. Based on Bsat of the core at 25°C and number of turns on winding 4-3.
6. Calculated output power based on 150 kHz operating frequency. Power
varies depending on application.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Designed specifically for use with Analog Devices
ADM2482E and ADM2487E High Speed, Isolated RS-485
Transceivers with Integrated Transformer Driver
Center tapped primary and secondary
2500 Vrms primary to secondary isolation
8
8
7
6
5
1
1
2
3
4
1
C
G
C
Recommended
Land Pattern
0.394
10,00
0.475
12,07
0.235
5,97
0.358
9,09
0.067
1,70
0.079
2,00
0.063
1,60
0.063
1,60
0.079
2,00
max
Dot indicates pin 1
max
max
0.004/0,10
8
5
4
2
7
6
3
Primary
L = 45.6 μH min
DCR = 0.13 Ohms max
L = 45.6 μH min
DCR = 0.13 Ohms max
Secondary
Primary windings and secondary windings
to be connected in series on the PC board.
1
DCR = 0.155 Ohms max
DCR = 0.155 Ohms max
Dimensions are inimm
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