P3302-html.html

ETALDOC 770/3

Page 1 of 5

April 2005

PRODUCT DATA SHEET

LOW DISTORTION

P3302

LINE MATCHING TRANSFORMER

Features

Applications

∗

Lead-free (Pb-free)

∗

V.90 and V.92 Modems

∗

RoHS compliant

∗

V.34 Modems

∗

Low Distortion

∗

12.6mm (0.5”) Seated Height

∗

IEC 60950 and UL 60950 Certified

∗

UL Recognized Component

∗

Environmentally tested to IEC 68

∗

CERT reliability tested

∗

Excellent Frequency Response

∗

High Thermal Stability

∗

Electrical substitute for XM-1025, 2802-B,

and 671-8079

DESCRIPTION

P3302 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.

P3302 is offered as a more compact internationally
safety approved substitute for XM-1025, 2802-B
and 671-8079 in existing circuits without changes
to matching components.

P3302 uses patented design and construction
methods to achieve excellent signal performance
and safety isolation to international standards.
P3302 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.

P3302 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

Patented

P3302

ETALDOC 770/3

Page 2 of 5

April 2005

SPECIFICATIONS

Electrical

At T = 25ºC and as reference circuit Fig. 2 unless otherwise stated.

Parameter Conditions

Min

Typ

Max

Units

Insertion Loss

f = 2kHz, R

= 600

- 2.0 - dB

Frequency Response

LF -3dB cutoff
HF -3dB cutoff
100Hz – 4kHz

-
-
-

10
30

-
-

0.1

kHz

Return Loss

200Hz – 4kHz

Third Harmonic
Distortion

(1)

150Hz -3dBm in line

-74

dBm

Voltage Isolation

(2)

50Hz

2.12

3.0

-
-

kVrms

Operating Range:
Functional
Storage

-40

-
-

+70
+85

ºC
ºC

Lumped equivalent circuit parameters as Fig. 1

DC resistance

(3)

, R

DCP

DCS

Primary
Secondary

126
130

-
-

154
160

Leakage inductance,

3.6

5.4

Shunt inductance, Lp

200Hz 1V

8 18 - H

Shunt loss, Rp

200Hz 1V

16 19

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.

Equivalent Circuit

Fig. 1

IDEAL

1:1

½ L

Patented

P3302

ETALDOC 770/3

Page 3 of 5

April 2005

CONSTRUCTION

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 6.7g.

Patented

10nF

22 F

600 Reference Circuit

Fig. 2

LINE

600

300*

* Increase to 430 to improve RX loss.

Return loss > 20dB 200Hz - 4kHz

TXA2

TXA1

Connections

Dimensions

P3302

ETALDOC 770/3

Page 4 of 5

April 2005

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 Ua

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
68-2-20 Test Tb Method 2

Solder bath 260ºC 10s
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

No impairment

Shock 68-2-27

Test

Ea Peak acceleration 1000m/s

Duration of pulse 6ms
3 shocks each direction on 3 axes

No impairment

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

–25ºC

+85ºC

30 min

2 min

≤

3 min

Recovery to ambient 1-2h
5 cycles

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/s

9-200Hz

20 mins per
plane

No impairment

Transportation Test Thermal cycling -65ºC to +80ºC

Random vibration 10-200Hz and
200-2000Hz at 57m/s

RMS

2 hours per
plane

No impairment

P3302

ETALDOC 770/3

Page 5 of 5

April 2005

SAFETY

ABSOLUTE MAXIMUM RATINGS

(Ratings of components independent of circuit).

Constructed in accordance with IEC

60950-1,

60950-1 and UL

60950-1, supplementary

insulation, 250Vrms maximum working voltage,
flammability class V-0.

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.

Short term isolation voltage (1s)

DC current
Storage temperature

Lead temperature, 10s

2.12kVrms,
3.0 kVDC
100

-40ºC to
+85ºC
260ºC

CERTIFICATION

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 P3302 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.

P3302 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.

Reproduction prohibited

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

FM 25326

ISO 9001

E203175