Token Ring Isolation Transformers
E L E C T R O N I C S I N C .
EPA1550-X & EPA1550-X-LF
• Designed for IBM and Token Ring for 16 MHz Applications
• Hipot : 500 Vrms (in compliance with LAN’s Safety Requirements)
• Available in Single and Dual Low Profile Thru-Hole Packages
• Add “-LF” after part number for Lead Free
• Storage Temperature : -40°C to +125°C
• Operating Temperature : 0°C to +70°C
• IEEE 802.5 Compatible
Electrical Parameters @ 25° C
PCA
Part
Number
Interwinding
Insertion Loss
(dB Max.)
@ 10 MHz
Return Loss
(dB Min.)
@ 5 MHz
CMR
(dB Min.)
@ 1.0 MHz
OCL
Leakage
Inductance
(µH Max.)
DCR
Capacitance
(µH Ref.)
(WMax.)
Pri.
(pF Max.)
@ 100 KHz, 100 mV
Sec.
EPA1550-1(-LF) [Single]
750
25
0.20
0.5
20
-60
1.0
1.0
EPA1550-2(-LF) [Dual]
EPA1550-3(-LF) [Single]
750
250
25
15
0.20
0.15
0.5
0.5
20
20
-60
-60
1.0
1.0
0.55
0.85
EPA1550-4(-LF) [Dual]
EPA1550-5(-LF) [Dual]
250
15
30
0.15
0.03
0.5
0.5
20
20
-60
-60
0.55
0.4
•
0.85
0.8
400 Min.
•
Hipot : 500 Vrms Between Pri. and Sec. Windings & also from Coil to Coil in Dual Package [EPA1550-5 is Wdg to Wdg]
•
Turns Ratio for EPA1550-1 & 2 : 1:1:1:1 ± 5% •• Turns Ratio for EPA1550-3 & 4 : 1:1:2:2 ± 5%
•
Turns Ratio for EPA1550-5 : 2:9:22 ± 5%
•
.500
1.00 Max.
(25.40)
Max.
(12.70)
16
1
9
.385
PCA
EPA1550-2(-LF)
D.C.
.500
Max.
(12.70)
Max.
Dual 16 Pin Package
Marking :
PCA
EPA1550-1(LF)
D.C.
(9.78)
Single 8 Pin Package
8
.015
(.381)
.120 ± .020
(.305 ± .508)
.250 Max.
(6.35)
.015
(.381)
.120 ± .020
(.305 ± .508)
.250 Max.
(6.35)
.300
(7.62)
.100
(2.54)
#24 TC
.300
(7.62)
.100
(2.54)
#24 TC
1.00 Max.
(25.40)
Dual 20 Pin
Schematic
Dual 16 Pin
Schematic
Single 8 Pin
Schematic
20
11
.400
Max.
PCA
EPA1550-5(-LF)
D.C.
Dual 20 Pin Package
1
(10.16)
10
20
19
1
16
1
5
Pin 1 I.D.
2
3
4
15
14
13
2
3
4
6
7
8
.018
1
.120 ± .020
(.457)
.250 Max.
(6.35)
(.305 ± .508)
2
3
18
17
.300
.100
#24 TC
4
5
5
12
(7.62)
(2.54)
16
15
6
7
6
7
8
11
10
9
Notes :
EPA1550-X
SnPb
EPA1550-X-LF
Hot Tin Dip (Sn)
260°C
1. Lead Finish
8
9
14
13
2. Peak Temperature Rating
3. Moisture Sensitive Levels
260°C
MSL = 1
MSL = 1
(Unlimited, £30°C/60%RH) (Unlimited, £30°C/60%RH)
10
4. Weight
1.318 grams (-1)
46 pieces/tube
24 pieces/tube
1.318 grams (-1)
46 pieces/tube
24 pieces/tube
12
11
5. Packaging Information
(Tubes for -1 & -3)
(Tubes for -2, -4 & -5)
Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25
Product performance is limited to specified parameters. Data is subject to change without prior notice.
CSA1550-X & -LF Rev. 1 8/20/07 RR
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com