ETAL P1727

PRODUCT DATA SHEET
P1727
PICK-OFF TRANSFORMER
Features
Applications
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12.6mm (0.5") seated height
Lead-free (Pb-free)
RoHS compliant
Vacuum encapsulated
IEC 60950 and UL 60950 certified
UL Recognized Component
Telecommunications
Pick-off applications
Calling Line Identification
Instrumentation
Voice Recording
DESCRIPTION
P1727 is a high impedance transformer for
applications where high performance and safety
isolation to international standards are required in a
compact case size.
P1727 has a turns ratio of 2.162:1 giving an
impedance transformation of 4.67:1.
P1727 is certified to IEC 60950 and UL 60950.
P1727 is a UL Recognized Component and is
supported by an IEC CB Test Certificate. The
part is completely lead-free, compliant with RoHS
Directive 2002/95/EC, and suitable for lead-free
and conventional processing.
P1727 is designed for “listening” applications when
placed across a line, presenting a very high
impedance to minimize circuit loading.
ETALDOC 110/10
Page 1 of 4
February 2006
1727
SPECIFICATIONS
Electrical
At T = 25ºC unless otherwise stated.
Parameter
Conditions
Min
Typ
Max
Units
Voltage
isolation (1)
50Hz
DC
3.88
5.5
-
-
kVrms
kV
Balance
DC – 5kHz
Method TG25
50
-
-
dB
Input impedance
200Hz – 4kHz, Fig 2
12
-
-
kΩ
Operating range:
Functional
Storage
Humidity
Ambient temperature
-25
-40
-
-
+85
+125
95
ºC
ºC
%R.H.
Sum of windings
(Corrected for ratio)
-
-
1537
Ω
Leakage inductance ΔL
Refered to pins 1-3
-
-
160
mH
Shunt inductance Lp
10mV 200Hz
22
-
-
H
Shunt loss Rp
10mV 200Hz
50
-
-
kΩ
Lumped equivalent circuit parameters as Fig. 1
DC resistance, RDC (2)
Notes
1. Components are 100% tested at 6.5kV DC.
2. Caution: do not pass DC through windings.
Telephone line current, etc. must be diverted
using choke or semiconductor line hold
circuit.
ETALDOC 110/10
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February 2006
1727
Equivalent Circuit
Recommended Circ uit
Fig 1
Fig 2
LINE
Through "loss" (inc luding voltage ratio) 6.7dB plus less than 0.8dB
exc luding effect of any DC blocking c apac itor.
Response: ± 0.3dB 200Hz - 4kHz
CONSTRUCTION
e2
Dimensions shown are in millimetres (inches).
Geometric centres of outline and pin grid coincide within a tolerance circle of 0.6mm
ETALDOC 110/10
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February 2006
1727
SAFETY
CERTIFICATION
Constructed in accordance with IEC 60950-1:2001,
EN 60950-1:2001 and UL 60950-1 First Edition,
supplementary insulation, 250Vrms maximum
working voltage, flammability class V-0.
Distances through solid insulation 0.4mm
minimum.
Certified under the IEC CB scheme (Certificate
DK-9431) to IEC 60950-1:2001, sub-clauses 1.5,
1.5.1, 1.5.2, 1.7, 1.7.1, 2, 2.9, 2.9.1, 2.9.2, 2.9.3,
2.10, 2.10.1, 2.10.2, 2.10.3, 2.10.3.1, 2.10.3.3,
2.10.4, 2.10.5, 2.10.5.1, 2.10.5.4, 4, 4.7, 4.7.1, 4.7.3,
4.7.3.1, 4.7.3.4, 5, 5.2, 5.2.1, and 5.2.2 for a
maximum working voltage of 250Vrms, nominal
mains supply voltage not exceeding 300Vrms and a
maximum operating temperature of 85ºC in
Pollution Degree 2 environments, supplementary
insulation, including national differences for
Denmark, Finland, Germany, Norway, Sweden,
Switzerland, USA, Canada and UK.
Recognized under the Component Recognition
Program of Underwriters Laboratories Inc. to US and
Canadian
requirements
CAN/CSA
C22.2
No. 60950-1-03/UL60950-1, First Edition, based on
IEC 60950-1, First Edition, maximum working voltage
250Vrms, Pollution Degree 2, reinforced insulation.
UL File number E203175.
Additionally, Profec Technologies certifies all
transformers as providing voltage isolation of
3.88kVrms, 5.5kV DC minimum. All shipments are
supported by a certificate of conformity to current
applicable safety standards.
ABSOLUTE MAXIMUM RATINGS
COPYRIGHT
(Ratings of components independent of circuit).
Short term isolation voltage (15s)
4.6kVrms,
6.5kV DC
DC current
100μA
Storage temperature
-40ºC to
+125ºC
Lead temperature, 10s
260ºC
ETAL and P1727 are Trade Marks of Profec
Technologies Ltd.
The Trade Mark ETAL is registered at the UK
Trade Marks Registry.
Profec Technologies Ltd. is the owner of the
design right under the Copyright Designs and
Patents Act 1988 and no rights or licences are
hereby granted or implied to any third party.
© 1996 – 2006 Profec Technologies Ltd.
Reproduction prohibited.
E203175
ETAL Group Oy, Kuormatie 14, FIN-03101, Nummela
Telephone: +358 (0)20 7500 330
Fax: +358 (0)20 7500 333
Website: www.etalgroup.com
Email: etalgroup@egruppen.com
ETALDOC 110/10
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ISO 9001
FM 25326
February 2006