P2781 ETAL, P2781 Datasheet - Page 2

• Manufacturer Part Number: P2781
• Description: Line Matching Transformer
• Manufacturer: ETAL

Specifications of P2781

• Current Rating: 100µA
• Transformer Mounting: PC Board
• Length/height, External: 7mm
• Pitch Spacing: 2.54mm
• External Width: 9mm
• External Depth: 12.7mm
• Transformer Type: Line Matching
• Insertion Loss: 2dB
• Mounting Type: SMD
• Rohs Compliant: Yes
• Primary Impedance: 600ohm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lumped equivalent circuit parameters as Fig. 1
ETALDOC 240/9
Electrical
At T = 25ºC and as circuit Fig. 1 unless otherwise stated.
Notes
1. Third
2. Components 100% tested at 6.5 kVDC.
3. Caution: do not pass DC through windings.
4. At signal levels greater than -20dBm, Lp will
5. Excludes shipping materials. Components are
Parameter
Insertion Loss
Frequency response
Return Loss
Distortion
Balance
Saturation
Voltage
Isolation
Operating range:
Functional
Storage
Humidity
SPECIFICATIONS
DC resistance, R
Leakage
inductance L
Shunt
inductance Lp
Shunt loss Rp
harmonics by 20dB.
Telephone line current, etc. must be diverted
using choke or semiconductor line hold circuit.
increase and Rp will decrease slightly but the
effect is usually favourable to the return loss
characteristic.
dry-packed and sealed as shipped.
Profec Technologies for appropriate storage
conditions for sealed consignments.
(2)
(1)
harmonic
(4)
(4)
DC
(3)
typically
Conditions
f = 2kHz, R
f = 2kHz, R
-3dB LF cutoff
-3dB HF cutoff
200Hz - 4kHz
200Hz - 4kHz
f = 450Hz
0dBm in line
3rd Harmonic
DC - 5kHz
Method TG25
Excitation 50Hz
250Vrms
Output voltage
across line
50Hz
DC
Ambient temperature
Sum of windings
-43dBm 200Hz
-43dBm 1kHz
-43dBm 200Hz
-43dBm 1kHz
exceeds
L
L
= 600
= 430
Refer to
other
Page 2 of 5
3.88
Min
205
5.5
-10
-40
4.2
1.4
18
80
5
-
-
-
-
-
-
-
-
-
-
-
Equivalent Circuit
Fig 1
Typ
-60
1.8
50
40
10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+125
Max
±0.2
+85
245
2.0
4.0
-54
4.9
3.5
10
65
95
15
-
-
-
-
-
-
-
P2781
IDEAL
January 2001
1:1
kVrms
%R.H.
Vpeak
Units
Vrms
dBm
kHz
mH
dB
dB
Hz
dB
dB
dB
kV
k
k
ºC
ºC
H
H