ETAL P3355

PRODUCT DATA SHEET
LOW DISTORTION
LINE MATCHING TRANSFORMER
Features
Applications
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∗ V.90 and V.92 Modems
∗ V.34 Modems
Lead-free (Pb-free)
RoHS compliant
Low Distortion
12.6mm (0.5”) Seated Height
Industry Standard Pinout
IEC 60950 and UL 60950 Certified
UL Recognized Component
Environmentally tested to IEC 68
CERT reliability tested
Excellent Frequency Response
High Thermal Stability
Directly replaces ATS-255
P3355
DESCRIPTION
P3355 is intended for V.90 and V.92 (56kbps)
modems and other high-speed applications where
ultra-low distortion at moderate power levels and
very low voiceband frequencies is required at a
most competitive price.
P3355 is offered as a direct replacement for
ATS-255 in existing circuits without changes to
matching components, but re-engineered for
significantly improved thermal stability.
P3355 uses patented design and construction
methods to achieve excellent signal performance
and safety isolation to international standards.
P3355 is certified to IEC 60950 and UL 60950.
P3355 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.
P3355 has been subjected to relevant
environmental testing according to IEC 68 and
Combined Environmental Reliability Testing
(CERT) beyond normal operational levels and
passed all tests, remaining fully functional.
FOR NEW DESIGNS
P3356 IS RECOMMENDED
ETALDOC 702/7
Patented
Page 1 of 5
April 2005
P3355
SPECIFICATIONS
Electrical
At T = 25ºC and as reference circuit Fig. 2 unless otherwise stated.
Parameter
Conditions
Min
Typ
Max
Units
Insertion Loss
f = 2kHz, RL = 600Ω
-
2.4
-
dB
Frequency Response
LF -3dB cutoff
HF -3dB cutoff
100Hz – 4kHz
-
10
30
-
±0.1
Hz
kHz
dB
Return Loss
200Hz – 4kHz
26
-
-
dB
Third Harmonic
Distortion(1)
150Hz -3dBm in line
-
-
-76
dBm
Voltage Isolation(2)
50Hz
DC
2.12
3.0
-
-
kVrms
kV
0
-40
-
+70
+85
ºC
ºC
126
173
-
154
211
Ω
Ω
3.6
-
6
mH
Operating Range:
Functional
Storage
Lumped equivalent circuit parameters as Fig. 1
DC resistance(3), RDCP
RDCS
Primary
Secondary
Leakage inductance, ΔL
Shunt inductance, Lp
200Hz 1V
10
23
-
H
Shunt loss, Rp
200Hz 1V
20
24
-
kΩ
Equivalent Circuit
Notes:
1. Third harmonic typically exceeds other
harmonics by 10dB.
2. Components are 100% tested at 3.25kVDC.
3. Caution: do not pass DC through windings.
Telephone line current must be diverted using
semiconductor line hold circuit or choke.
4. At signal levels greater than 100mV, Lp will
increase and Rp will decrease slightly but the
effect is usually favourable to the return loss
characteristic.
Fig. 1
½ L
R
R
½ L
IDEAL
1:1
Patented
ETALDOC 702/7
Page 2 of 5
April 2005
P3355
600Ω Referenc e Circuit
Fig. 2
22μF
600
LINE
270
TXA1
10nF
TXA2
CONSTRUCTION
Dimensions
Connections
e2
Dimensions shown are in millimetres (inches).
Geometric centres of outline and pin grid coincide within a tolerance circle of 0.6mmØ.
Windings may be used interchangeably as primary or secondary.
Total weight typically 7g.
Patented
ETALDOC 702/7
Page 3 of 5
April 2005
P3355
ENVIRONMENTAL TESTING
Reliability testing to IEC 68
Tested to clauses of IEC 68 and compliant with all functional and safety requirements following exposure as follows:
Test description IEC 68 reference
Test details
Result
Robustness of
terminations
68-2-21 Test Ua1
68-2-21 Test Ua2
Tensile 5N pull
Thrust 1N push
No impairment
No pin detachment or distortion
Solderability
68-2-20 Test Ta Method 1
Solder bath 235ºC 2s
Resistance to
soldering heat
68-2-20 Test Tb Method 1A Solder bath 260ºC 10s
68-2-20 Test Tb Method 2 Soldering iron 350ºC 5s
No impairment
Finish smooth, bright and even
Vibration
68-2-6 Test Fc
Sweep 10-55-10Hz in 1 minute
Amplitude 1.5mm pk-pk
Duration 2h per axis, 3 axes
Shock
68-2-27 Test Ea
No impairment
Peak acceleration 1000m/s2
Duration of pulse 6ms
3 shocks each direction on 3 axes
Cold
68-2-1 Test Ab
-25ºC 16h
Recovery to ambient 1-2h
No impairment
Dry heat
68-2-2 Test Bb
125ºC 16h
Recovery to ambient 1-2h
No impairment
Damp heat
68-2-3 Test Ca
40ºC 4 days, RH 93%
Recovery to ambient 1-2h
No impairment
Change of
temperature
68-2-14 Test Na
TA –25ºC
TB +85ºC
t1 30 min
2 min ≤t2≤3 min
Recovery to ambient 1-2h
5 cycles
No impairment
No impairment
Combined Environmental Reliability Testing (CERT)
Components step stressed at increasing levels of severity using combined stresses to detect potential
weaknesses.
Results are shown for highest levels of stress tested. Compliant with all functional and safety tests following
exposure as follows:
Test description
Test details
Duration
Result
Storage Test
Thermal cycling -30ºC to +100ºC at
11ºC/min
6mm pk 2-9Hz at 1 octave/min
20m/s2 9-200Hz
20 mins per
plane
No impairment
Transportation Test
Thermal cycling -65ºC to +80ºC
Random vibration 10-200Hz and
200-2000Hz at 57m/s2 RMS
2 hours per
plane
No impairment
ETALDOC 702/7
Page 4 of 5
April 2005
P3355
SAFETY
ABSOLUTE MAXIMUM RATINGS
(Ratings of components independent of circuit).
Constructed in accordance with IEC 60950-1,
EN 60950-1 and UL 60950-1, supplementary
insulation, 250Vrms maximum working voltage,
flammability class V-0.
Short term isolation voltage (1s)
There are no special installation requirements
(beyond attending to usual PCB track separations)
since the integral cover provides supplementary
insulation from its external faces to internal core
and windings.
Lead temperature, 10s
CERTIFICATION
DC current
Storage temperature
2.12kVrms,
3.0 kVDC
100μA
-40ºC to
+85ºC
260ºC
INTELLECTUAL PROPERTY RIGHTS
Certified under the IEC CB scheme (Certificate
DK-8570) to IEC 60950-1-2001, sub-clauses 1.5,
1.5.1, 1.5.2, 1.7.1, 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, 2.10.5.2, 2.10.5.4, 4.7, 4.7.1 (classV-1), 4.7.3,
4.7.3.1, 4.7.3.4, 5.2, 5.2.1, 5.2.2, 6.1.2.1 (Finland,
Norway, Sweden national deviations) for a maximum
working voltage of 250Vrms, nominal mains supply
voltage not exceeding 300Vrms and a maximum
operating temperature of 70ºC in Pollution Degree
2 environments.
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
180Vrms (creepage), 420V peak (clearance), Pollution
Degree 2, supplementary insulation.
UL File number E203175.
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 P3355 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.
P3355 design and construction are protected by
patents and registered design.
British Patent No. 2333646.
USA Patent Nos. 6, 344, 787; 6,690,254
European Patent No. 1082734
China Patent No. ZL 99806739.3
UK Registered Design No. 2077360.
French Registered Design No. 991512.
United States Registered Design 426, 815.
Mexico Registered Design 12143
Other patents and registered designs pending.
© 1998 - 2005 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 702/7
Page 5 of 5
ISO 9001
FM 25326
April 2005