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NCP1840
PACKAGE DIMENSIONS
QFN20, 4x4, 0.5P
CASE 485E
ISSUE B
D
A
B
EXPOSED Cu
MOLD CMPD
A3
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED TERMINAL
PIN ONE
REFERENCE
AND IS MEASURED BETWEEN 0.15 AND 0.30 MM
FROM THE TERMINAL TIP.
4. COPLANARITY APPLIES TO THE EXPOSED PAD
2X
0.15 C
2X
E
A1
DETAIL B
OPTIONAL CONSTRUCTIONS
AS WELL AS THE TERMINALS.
MILLIMETERS
DIM MIN MAX
A 0.80 1.00
A1
--- 0.05
0.15 C
TOP VIEW
L
L
A3
b
D
0.20 REF
0.20 0.30
4.00 BSC
0.10 C
DETAIL B
(A3)
A
L1
D2
E
E2
e
2.60 2.90
4.00 BSC
2.60 2.90
0.50 BSC
0.08 C
DETAIL A
OPTIONAL CONSTRUCTIONS
K
L
L1
0.20 REF
0.35 0.45
0.00 0.15
SIDE VIEW
A1
C
SEATING
PLANE
SOLDERING FOOTPRINT*
DETAIL A
6
D2
0.10 C A B
20X L
0.10 C A B
4.30
2.88
20X
0.58
11
E2
1
K
1
e
20
20X
b
0.10 C A B
2.88 4.30
BOTTOM VIEW
0.05 C
NOTE 3
PKG
OUTLINE
20X
0.35
0.50
PITCH
DIMENSIONS: MILLIMETERS
*For additional information on our Pb ? Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
QUAD ? MODE is a registered trademark of Semiconductor Components Industries, LLC (SCILLC).
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT :
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Phone : 303 ? 675 ? 2175 or 800 ? 344 ? 3860 Toll Free USA/Canada
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19
ON Semiconductor Website : www.onsemi.com
Order Literature : http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
NCP1840/D
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