ULE Series
Isolated, High Density, Eighth-Brick
1.25–30 Amp, DC/DC Converters
MECHANICAL SPECIFICATIONS
Through-hole Pin Changes for 2008
Extruded 0.040-inch Pin Configurations
In 2008, for through-hole models only, MPS will gradually phase over to a dif-
ferent extruded 0.040” (1.02 mm) diameter pin design and elimination of the
spacer standoffs on most models. This will have no effect on installation,
interchangeability, electrical or mechanical specifications. Any machined
0.062” (1.57 mm) diameter pin will transition to a straight wire 0.062” pin. The
new 0.040” pins will insert properly to existing host PC boards and include an
integral pin shoulder to form the mounting plane (Figure 1). There is no model
number change, only a slightly changed appearance. Use the drawings and table
below to identify the new pin design. Older drawings are retained in this data
sheet for archival reference. And, surface mount ULEs are not affected.
RoHS Models (-C)
ULE-1.2/30-D48
ULE-1.5/20-D24P
ULE-1.5/20-D48
ULE-1.8/20-D24
ULE-1.8/20-D48
ULE-2.5/20-D24
ULE-2.5/20-D48
ULE-3.3/20-D12
ULE-3.3/20-D24
ULE-3.3/20-D48N
ULE-3.3/20-D48P
ULE-5/10-D12
ULE-5/12-D24
ULE-5/12-D48
ULE-12/4.2-D24
ULE-12/4.2-D48
ULE-24/3-D48N
ULE-48/1.25-D48
0.040" Pin depth*
0.25 (6.4)
0.25 (6.4)
0.25 (6.4)
0.25 (6.4)
0.25 (6.4)
0.19 (4.8)
0.19 (4.8)
0.19 (4.8)
0.25 (6.4)
0.25 (6.4)
0.19 (4.8)
0.19 (4.8)
0.19 (4.8)
0.25 (6.4)
0.25 (6.4)
0.25 (6.4)
0.25 (6.4)
0.25 (6.4)
All new production models are RoHS-6 compliant and always use the –C
model number suffix. Older non-RoHS models are also being changed over to
the new extruded pins; however non-RoHS models are not listed in this table.
0.040 (1.02) dia. pin
Pin shoulder, 0.072 0.002 dia. (1.83 0.05)
ULE Converter
Seating plane
ꢀThe “0.040-inch pin depth” is the distance between the mounting plane of the ULE
converter (at the pin shoulder) and the inserted tip of the pin. Therefore it is the length of
pin which the host receiving PC board must accept. The ULE mounting plane interfaces
to the top mounting surface (seating plane) of the user’s PC board. The ULE mounting
plane is established either by an integral pin shoulder (new) or a plastic standoff (older)
but not both. Users should avoid placing components immediately below the converter.
User’s host
PC Board
Keep-out area
Pin depth, see table
Dimensions are in inches (mm)
Drawing not to scale
Figure 1. Extruded 0.040-inch Pin
ꢀꢀDimensions in inches (mm)
The “integral” pin shoulder is formed as part of the extruded pin fabrica-
tion and replaces the plastic standoff spacer. The shoulder diameter is 0.072
+/−0.002" and forms the mounting plane of the converter. The user should
provide sufficient clearance for a 0.040" pin hole but well below the 0.072"
shoulder diameter. This mounting plane avoids mechanical stress placed on
the converter components. Do not place the components below the converter.
The pin finish for all models remains as gold plate over nickel underplate.
The pin material is a copper alloy. The pin finish is suitable for both leaded
and lead-free solders.
PIN STRUCTURE DIMENSIONS (NO LONGER USED)
ULE-12/4.2-D48
ULE-5/12-D48
(machined pins only)
0.26 0.02 (6.6 0.5)
Printed Circuit Board
Ø 0.08 0.002 (2.1 0.05)
Ø 0.06 0.002 (1.6 0.05)
0.19 0.005 (4.8 0.1)
Ø 0.06 0.001 (1.5 0.03)
Ø 0.04 0.001 (1 0.03)
Standard Pins (6)
VOUT Pins (2)
Drawing not to scale
Dimensions are in inches (mm)
This is an older pin design. This drawing is retained for archival purposes only.
Please refer to the Pin Change discussion.
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MDC_ULE Series.C11 Page 6 of 23