39-1734103 Murata Power Solutions Inc, 39-1734103 Datasheet - Page 13

• Manufacturer Part Number: 39-1734103
• Description: Shunt
• Manufacturer: Murata Power Solutions Inc
• Series: 39r
• Type: Base-Mounted DC Shuntsr

Specifications of 39-1734103

• Current Rating: 20A
• Accuracy: ± 0.25%
• Sensing Element: Manganin
• Tightening Torque: 4.5N-m
• Mounting Type: Base
• Resistance: 0.0025ohm
• Peak Reflow Compatible (260 C): No
• Terminal Type: Screw
• Output Voltage: 50mV
• Equipment Type: Base-Mounted DC Shunts
• Input: 50 mV
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Energy Effi cient Products
Energy Effi cient Products
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Designed to provide outstanding performance
and ultra-low power consumption. These high-
effi ciency LED display instruments and switching
power supplies can signifi cantly reduce long-term
energy costs.
Quality Assured
The QA Engineering Team that instituted
our Design-for-Reliability Program performed
routine HALT (Highly Accelerated Life Testing)
on a randomly selected 2-wire meter and the
device “passed.” Devices are not supposed
to pass HALT. The intent of HALT is to “reveal
latent defects or design weaknesses that may
eventually cause fi eld failures” by subjecting
devices to progressively higher stress levels,
until something breaks.
The Engineering Team then decided to see
how much stress it would take to make a
second meter succumb. With the maximum
applied input voltage, the meter (mounted in
a metal panel using a DATEL bezel assembly)
was subjected to the following: operating
case-temperature extremes of +145°C and
–75°C; non-operating cold soak at –75°C
(after which the meter still operated correctly);
three temperature cycles (–65 to +125°C) at a
transition rate of 30°C per minute; 15 minutes
of 3-axis random longitudinal and rotational
vibration at 10 to 15Gs; a temperature spike
down to –65°C; and lastly, more vibration.
During the last vibration, the meter pulled away
from the bezel assembly (which had melted
during the +145°C temperature extreme!), and
one segment of one LED digit went blank.
Custom Designs
www.murata-ps.com/dpm
Replacements for hard-to-read LCD displays
Replacements for hard-to-read LCD displays
Increase battery life in portable applications
Increase battery life in portable applications
Eliminate the need for fans and heat sinks
Eliminate the need for fans and heat sinks
Excellent long-term reliability
For high-volume OEM applications, we can quickly and easily modify any of our standard LED or LCD-display instruments to
accommodate your specifi c needs. For minimal additional cost, you can have a fi nished product that displays the exact readings
you want for the input signal you are monitoring, without the need for any user modifi cations or external components.
The products shown here are full customs, designed to meet their customers’ unique physical and electro-optical requirements.
Both products incorporate user-selectable range settings via 2-position slide switches and precision trimpots. We even designed a
completely new LED for the 1-inch round (25.4mm) display. Contact our Applications Engineering Group for complete details.
Low Power LED Meters and Accessories
Upon troubleshooting, the Engineers discovered
all meter electronics—including the drive circuit
to the failed LED segment—were working fi ne.
The failure was traced to the display itself. The
Engineers’ report gave the device a “conditional
pass,” pending failure analysis of the LED display.
3½ and 4½ Digit DC Voltmeters
4-20mA Process Monitors
High-Effi ciency Switching Regulators
DMS-20PC-X-RL
DMS-30PC-X-XL
DMS-40PC-X-RL
DMS-20PC-4/20
150
120
–30
–60
–90
90
60
30
0
78XXSR
Series
Series
Series
20
3½ Digit Red, Green,
or Orange LED LED
3½ Digit Red LED
4½ Digit Red LED
3½ Digit Red LED
40
Display Options
Display Options
Voltage Outputs
3.3V, 5V, 12V
60
HIGHLY ACCELERATED LIFE TEST (HALT)
80
LM78XX compatible SIP
0.56in./14.2mm
0.52in./13.2mm
0.37in./9.4mm
0.37in./9.4mm
Digit Height
Digit Height
Package
Test Time (minutes)
100
Now you know why we confi dently specify our
standard digital panel meters with an operating
temperature range of 0 to +60°C and boast
about their rugged vibration and moisture-
resistant encapsulated packages.
120
Power Consumption
+4Vdc @ 20mA
15mA @ 5Vdc
35mA @ 5Vdc
8mA @ 5Vdc
140
Loop Drop
Effi ciency
To 95%
160
180
Operating Temp.
Operating Temp.
Operating Temp.
–40 to +70°C
0 to +60°C
0 to +60°C
0 to +50°C
0 to +60°C
200
30
20
0
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