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MCH2812S/883 bảng dữ liệu(PDF) 11 Page - Interpoint Corporation Company

tên linh kiện MCH2812S/883
Giải thích chi tiết về linh kiện  MCH/MGH Single and Dual DC-DC Converters 28 Volt input ??1.5 Watt
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nhà sản xuất  INTERPOINT [Interpoint Corporation Company]
Trang chủ  http://www.interpoint.com
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Figure 22: Mgh Case DiMensions
0.830 (21.08)
0.070 (1.78)
0.090 (2.29)
0.030 (0.76) 18X
0.085 (2.16) 4X
0.100 (2.54) 16X
Case B1 MGH Solder Pads, Rev F, 2013.05.31
CASE B1 GULL-WING SOLDER PADS
Dimensions in inches (mm)
Tolerance±0.005 (0.13) for three decimal places ±0.01 (0.3) for
two decimal places, unless otherwise specified.
Please refer to the numerical dimensions for accuracy.
CAUTION:
Internal components are soldered with SN96 (melting
temperature 221°C) to prevent damage during reflow. Maximum
reflow temperature for surface mounting the MGH converter is
220°C for a maximum of 30 seconds. SN60, 62, or 63 are the
recommended types of solder.
Hand soldering should not exceed 300°C for 10 seconds per pin.
SOLDER MASK NOTES
1. Pad dimensions are for the solder mask. Leads common to
each other can be connected to each other as desired.
2. Ground (case) pins should be connected to the center pad for
improved grounding.
3. Connect "no connection" pins to case ground to reduce EMI.
4. Center pad should not have a solder mask.
5. Adhesive attach is intended to be a surface for soldering the
hybrid to the circuit board.
6. Pre-tin base of converter prior to soldering.
7. If less rotation of case is desired, reduce the width of the large
case pad by 0.020 inches (0.51 mm). Pad length can be
extended 0.010 inches (0.25 mm) towards the case body and an
as-desired dimension away from the case body.
8. Do not exceed 220°C as measured on the body of the
converter (top or bottom).
9. Attach the body of the case to the board with a thermally
conductive adhesive or SN60, 62, or 63 solder. The adhesive
can be electrically conductive as well. It can be applied as an
underfill post solder or dispensed and cured prior or during
solder.
10. In the presence of vibration, to ensure reliable mechanical
attachment, the body of the case should be attached with
adhesive or solder as noted above (note 7). The leads alone do
not provide sufficient mechanical attachment.
Gull Wing Leads
Option
0.135 ref. (3.43)
Gull wing leads are solder dipped.
Lead dimensions are prior to solder dip.
0.08
(2.0)
0.010 (0.25)
Bottom of case to
bottom of lead
0.055
(1.40)
0.070
(1.78)
0.08 (2.0)
1.140 ref. (28.96)
1
1
TOP VIEW CASE B
0.880 max
(22.35)
1.010 max
(25.65)
0.010
(0.25)
1.870 ref. (47.50)
0.015
(0.38)
0.010
(0.25)
0.900 (22.86)
0.800 (20.32)
0.700 (17.78)
0.600 (15.24)
0.500 (12.70)
0.400 (10.16)
0.300 ( 7.62)
The triangle (ESD) marking on the cover indicates pin one. Cover marking is oriented
with pin one at the upper right corner. The straight lead configuration does not
require a “case designator” in the model number. ex. MGH2805S
1
2
3
4
5
6
8
9
7
18
17
16
15
14
13
12
11
10
0.000
Straight Leads
0.50
(12.7)
0.250 max.
(6.35)
0.200 ( 5.08)
0.100 ( 2.54)
Seam seal
Weight 12 grams maximum
Case dimensions in inches (mm)
Tolerance±0.005 (0.13) for three decimal places, ±0.01 (0.3) for two
decimal places unless otherwise specified. Please refer to the numerical
dimensions for accuracy.
CAUTION
Maximum reflow temperature is 220°C for a maximum of 30 seconds.
SN60, SN62, or SN63 are the recommended types of solder. See MGH
gull-wing solder pad layout. Hand soldering should not exceed 300°C for
10 seconds per pin.
Materials
Header Kovar/Nickel/Gold
Cover
Kovar/Nickel
Pins
Kovar/Nickel/Gold matched glass seal
Gold plating of 50 - 150 microinches is included in pin diameter
Seal hole: 0.040 ±0.002 (1.02 ±0.05)
Case B, Rev D, 2013.04.15
(This view shows
straight leads.)
(Center to center)
The gull wing option
(configuration) requires
“Z” as a “case
designator”
in the model number.
ex. MGH2805Z
Figure 23: Mgh guLL-wing soLDer PaD Layout
surFaCe Mount Case anD LeaD oPtions
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converter Cases
28 Volt input – 1.5 Watt
www.interpoint.com
Page11of13
MCH_MGHRevAB-2013.05.31


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