www.cd4power.com
NTE SERIES
Isolated 1W Single Output SM DC/DC Converters
KDC_NTEC.8 Page 1 of 4
SELECTION GUIDE
Order Code1
Nominal
Input
Voltage
Output
Voltage
Output
Current
Input
Current at
Rated Load
Efficiency Isolation
Capacitance MTTF2
V V mA mA % pF kHrs
NTE0303MC 3.3 3.3 303 410 73 30 1234
NTE0305MC 3.3 5 200 390 78 35 632
NTE0309MC 3.3 9 111 400 77 31 1005
NTE0312MC 3.3 12 83 400 77 28 525
NTE0315MC 3.3 15 66 400 77 29 293
NTE0503MC 5 3.3 303 270 74 40 619
NTE0505MC 5 5 200 294 68 35 2418
NTE0505MEC 5 5 200 260 77 40 419
NTE0509MC 5 9 111 267 75 43 1174
NTE0512MC 5 12 83 260 77 42 634
NTE0515MC 5 15 66 256 78 44 360
NTE1205MC 12 5 200 124 67 47 621
NTE1209MC 12 9 111 114 73 77 488
NTE1212MC 12 12 83 113 74 88 360
NTE1215MC 12 15 66 111 75 95 252
When operated with additional external load capacitance the rise time of the input voltage will determine the maximum external
capacitance value for guaranteed start up. The slower the rise time of the input voltage the greater the maximum value of the
additional external capacitance for reliable start up.
INPUT CHARACTERISTICS
Parameter Conditions MIN. TYP. MAX. Units
Voltage range
Continuous operation, 3.3V input types 2.97 3.3 3.63
VContinuous operation, 5V input types 4.5 5.0 5.5
Continuous operation, 12V input types 10.8 12.0 13.2
Reflected ripple current 30 47 mA p-p
ISOLATION CHARACTERISTICS
Parameter Conditions MIN. TYP. MAX. Units
Isolation voltage Flash tested for 1 second 1000 VDC
Resistance Viso= 1000VDC 10 GΩ
GENERAL CHARACTERISTICS
Parameter Conditions MIN. TYP. MAX. Units
Switching frequency All output types 110 kHz
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection31 second
Lead temperature 1.5mm from case for 10 seconds 300°C
Internal power dissipation 600mW
Input voltage VIN, NTE03 types 5.5V
Input voltage VIN, NTE05 types 7V
Input voltage VIN, NTE12 types 15V
1. If components are required in tape and reel format suffix order code code with -R, e.g. NTE0505MC-R.
2. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
3. Supply voltage must be disconnected at the end of the short circuit duration.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
DESCRIPTION
The NTE series of miniature surface mounted
DC/DC Converters employ leadframe technol-
ogy and transfer moulding techniques to bring
all of the benefits of IC style packaging to hybrid
circuitry. The co-planarity of the pin positions is
based upon IEC 191-6:1990. The devices are
suitable for all applications where high volume
production is envisaged.
FEATURES
nRoHS compliant
nLead frame technology
nSingle isolated output
n1kVDC Isolation
nEfficiency up to 78%
nPower density 1.8W/cm3
nWide temperature performance at full
1 Watt load, –40°C to 85°C
nUL 94V-0 Package material
nFootprint over pins 1.37cm2
n3.3V, 5V & 12V Input
n3.3V, 5V, 9V, 12V & 15V output
nNo heatsink required
nInternal SMD construction
nToroidal magnetics
nMTTF up to 2.4 million hours
nCustom solutions available
nMulti-layer ceramic capacitors
www.cd4power.com
NTE SERIES
Isolated 1W Single Output SM DC/DC Converters
KDC_NTEC.8 Page 2 of 4
OUTPUT CHARACTERISTICS
Parameter Conditions MIN. TYP. MAX. Units
Rated power TA=-40°C to 85°C 1.0 W
Voltage set point accuracy See tolerance envelope
Line regulation High VIN to low VIN 1.0 1.2 %/%
Load regulation1
10% load to rated load, 03XXMC, 0503MC, 0505MEC 10 14
%
10% load to rated load, 0505MC & 1205MC 12.8 15
10% load to rated load, 0509MC & 1209MC 8.3 9.0
10% load to rated load, 0512MC & 1212MC 6.8 7.5
10% load to rated load, 0515MC & 1215MC 6.3 7.0
Ripple and noise
BW=DC to 20MHz, 03XXMC, 0503MC, 0505MEC 40 60
mV p-p
BW=DC to 20MHz, 0505MC & 1205MC 62 85
BW=DC to 20MHz, 0509MC & 1209MC 49 75
BW=DC to 20MHz, 0512MC & 1212MC 39 65
BW=DC to 20MHz, 0515MC & 1215MC 38 76
TEMPERATURE CHARACTERISTICS
Parameter Conditions MIN. TYP. MAX. Units
Specification All output types -40 85
°C
Storage -55 125
Case temperature rise above
ambient
0305MC, 0309MC, 0315MC 25
0303MC, 0312MC, 0503MC, 0505MEC, 0509MC, 0512MC, 0515MC 30
0505MC, 1205MC 43
1209MC, 1212MC, 1215MC 40
Cooling Free air convection
TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage,
applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
C&D Technologies NTE series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
For a part holding no specific agency approvals, such as the NTE series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or
60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part
could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must
be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to
safety standard requirements.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials,
construction and environment. The NTE series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While
parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically
polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We
therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage.
This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further
insulation system of physical spacing or barriers.
1. 12V input types have typically 3% less load regulation change.
TEMPERATURE DERATING GRAPH
150100
50
0
-40
0
0.5
1.0
1.5
Safe Operating Area
85°C
Ambient Temperature (°C)
Output Power (W)
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS
soldering systems with a peak reflow solder
temperature of 245ºC and time above
liquidus of 217ºC for 80 seconds. The pin
termination finish on this product series
is Gold, plating thickness 0.1 microns
minimum. The series is backward compatible
with Sn/Pb soldering systems.
For further information, please visit www.cd4power.com/rohs
www.cd4power.com
NTE SERIES
Isolated 1W Single Output SM DC/DC Converters
KDC_NTEC.8 Page 3 of 4
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS PIN CONNECTIONS
Pin Function
1 -VIN
3 +VIN
5 NA
7 -VOUT
8+VOUT
10 NA
12 NA
14 NA
NA - Not available for electrical connection.
RECOMMENDED FOOTPRINT DETAILS TUBE OUTLINE DIMENSIONS
All dimensions in inches ±0.01 (mm ±0.25mm). All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position. Weight: 1.21g
TOLERANCE ENVELOPES
3.3V output types. All other types.


."9




."9
 4



 


1*/4
 4



1-"/&
4&"5*/(
%&5"*-"
4
%&5"*-"
1
3&'&3&/$&
1-"/&




 ¡
9::88
/5&.$


100
75
50
25
10
-7%
+9%
Output Load Current (%)
Output Voltage
+1%
-15%
-7%
+1%
Typical Load Line
VNOM
+10%
Output Load Current (%)
Output Voltage
+5%
-7.5%
-2.5%
+2.5%
Typical Load Line
VNOM
100
75
50
25
10
Unless otherwise stated all dimensions in inches ±0.02 (mm±0.5mm).
Tube length : 18.70±0.07 (475±2.0). Tube Quantity : 35










.*/

All pins on a 2.54mm pitch.
Unless otherwise stated all dimensions in inches (mm) ±0.5mm.
www.cd4power.com
NTE SERIES
Isolated 1W Single Output SM DC/DC Converters
KDC_NTEC.8 Page 4 of 4
C&D Technologies (NCL) Limited reserve the right to alter or improve the specification, internal design or manufacturing
process at any time, without notice. Please check with your supplier or visit our website to ensure that you have the current
and complete specification for your product before use.
© C&D Technologies (NCL) Limited 2006 KDC_NTEC.8
No part of this publication may be copied, transmitted or stored in a retrieval system or reproduced in any way including,
but not limited to, photography, photocopy, magnetic or other recording means, without prior written permission from C&D
Technologies (NCL) Limited. Instructions for use are available from www.cd4power.com
C&D Technologies (NCL) Ltd
Tanners Drive, Blakelands North
Milton Keynes MK14 5BU, UK
Tel: +44 (0)1908 615232
Fax: +44 (0)1908 617545
email: MK@cdtechno.com
TAPE & REEL SPECIFICATIONS
REEL OUTLINE DIMENSIONS TAPE OUTLINE DIMENSIONS
REEL PACKAGING DETAILS


."9





%*3&$5*0/0'6/3&&-*/(









 

53"*-&34&$5*0/
.*/
(00%4&/$-0463&
4&$5*0/
-&"%&34&$5*0/
.*/
$"33*&35"1&45"35
.*/

."9

.*/


."9
"5)6#4&$5*0/





Reel quantity: 500
C&D Technologies, Inc.
11 Cabot Boulevard, Mansfield,
MA 02048-1151, USA
Tel: +1 (508) 339-3000
Fax: +1 (800) 233-2765
email: sales@cdtechno.com