ETALDOC 720/8

Page 1 of  4

January 2001

PRODUCT DATA SHEET

ADSL TRANSFORMER

P2883

Features

Applications

∗

  Ultra-low profile, 7mm

∗

  ADSL

∗

  IEC 950, EN 60950 and EN 41003 certified

∗

  Supplementary Insulation

∗

  CSA NRTL/C Certificate of Compliance

∗

  BABT Certificate of Recognition

∗

  Excellent frequency characteristics

∗

  Low distortion

∗

  Use as 1:1 or 2:1 ratio

∗

  Vacuum encapsulated

 
 

 

DESCRIPTION

P2883 is a microprofile transformer for ADSL
applications requiring safety isolation to
international standards.

The ADSL requirements for good balance and
frequency response, with low levels of distortion
are achieved in a miniature package with a high
level of safety insulation.

P2883 is certified to safety standards IEC 950,
EN 60950 and EN 41003 for supplementary
insulation, 250V working voltage.  P2883 is
supported by an IEC CB Test Certificate,  CSA
Certificate of Compliance and BABT Certificate.

to Electronic Techniques

(Anglia) Limited

P2883

ETALDOC 720/8

Page 2 of 4

January 2001

SPECIFICATIONS

Electrical

At T = 25ºC and reference circuit Fig. 1 unless otherwise stated. The convention used in this datasheet is that
'primary' windings are on the line side and 'secondary' windings are on the equipment side.

Parameter

Conditions

Min

Typ

Max

Units

Turns ratio

(3-5)+(4-6):(2-1)

0.98

1.00

1.02

Primary inductance

3-6, 30kHz, 1V

25

40

-

mH

DC resistance

3-5 and 4-6
1-2

-
-

1.8
1.2

-
-

Ω

Ω

Interwinding
capacitance

1 & 2 linked:
3, 4, 5, 6 linked

-

30

-

pF

Leakage inductance

3-6 (1-2 shorted)

-

5

12

µH

Insertion loss

500kHz

-

0.25

-

dB

Frequency response

30kHz - 1.1MHz

-

±0.1

-

dB

Phase response

30kHz - 1.1MHz

-

±5

-

degrees

Longitudinal balance

30kHz - 1.1MHz

40

-

-

dB

Return loss

30kHz - 500kHz
500kHz - 1.1MHz
1.1MHz - 2MHz

20
14
10

-

18
14

-
-
-

dB
dB
dB

Total Harmonic
Distortion

4Vrms
30kHz - 1.1MHz

-

-

-80

dBc

Voltage isolation

50Hz
DC

2.12

3.0

-
-

-
-

kVrms

kV

Operating range:

Functional
Storage

Ambient temperature

0

-40

-
-

+70

+125

ºC
ºC

50

50

1

2

6

4

5

3

LINE

100

0.1µF

P2883

ETALDOC 720/8

Page 3 of 4

January 2001

Notes:

1. The 0.1µF capacitor is fitted to block DC. It may be placed, as an alternative, in either leg of the line pair.

2. If desired, the transformer may be reversed so that the split winding is on the equipment side.

3. To effect a 1:2 step up to line, connect as shown in Fig. 2. The ratio between the two halves of the split

winding is exactly 1.00:1.00 by design, and paralleling the windings is thus always acceptable.

CONSTRUCTION

Dimensions shown are in millimetres (inches).
Geometric centres of outline and pin grid
coincide within a tolerance circle of Ø0.6mm.
Recommended PCB hole size Ø0.8mm.
Terminal pins electroplated Sn Pb 60/40 µm min.

12

12

6

3

1

4

5

2

LINE

100

0.1µF

Fig 3  Mechanical Specification

P2883

ETALDOC 720/8

Page 4 of 4

January 2001

SAFETY

ABSOLUTE MAXIMUM RATINGS

(Ratings of components independent of circuit).

Short term isolation voltage (1s)

2.12kVrms
3.0kVDC

Storage temperature

-40ºC  to
+125ºC

Constructed in accordance with IEC 950:1991,
EN 60950:1992 (BS 7002:1992), supplementary
insulation and BS EN 41003:1997, 250Vrms
working.

Lead temperature, 10s

260ºC

CERTIFICATION

COPYRIGHT

Certified by BSI to IEC 950:1991/A4:1996 (IEC CB
Test Certificate No. GB541W) sub-clauses 2.2.2,
2.9.2, 2.9.3, 2.9.4, 2.9.6, 2.9.7, 4.4, 4.4.3.2 (class
V-0) and 5.3 for a maximum working voltage of
250Vrms, nominal mains supply voltage not
exceeding 300Vrms and a maximum operating
temperature of +70ºC in Pollution Degree 3
environment, supplementary insulation.

CAN/CSA C22.2 No.  950-95/UL1950, certified by
CSA, Third Edition, including revisions through to
revision date March 1, 1998, based on Fourth
Amendment of IEC 950,  Second Edition, maximum
working voltage 250Vrms, Pollution Degree 2,
supplementary insulation.

CSA Certificate of Compliance 1107696 (Master
Contract 188107).
Certified by BABT to EN 60950.
BABT Certificate CR/0160.

Additionally, Profec Technologies certifies all
transformers as providing voltage isolation of
2.12kVrms, 3kV DC minimum.   All shipments are
supported by a Certificate of Conformity to current
applicable safety standards.

ETAL and P2883 are  Trade Marks of Profec
Technologies Ltd.

The  Trade Mark and Service Mark ETAL are
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.

© 1999 and 2000 Profec Technologies Ltd.

Reproduction prohibited.

T R A N S F O R M I N G    T H E         F U T U R E

Profec Technologies Ltd, 10 Betts Avenue, Martlesham Heath, Ipswich, IP5 3RH, England

                           Telephone: +44 (0) 1473 611422

Fax:  +44 (0) 1473 611919

Websites: www.etal.ltd.uk

www.profec.com

Email:

info@etal.ltd.uk

sales@profec.com

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