ISL78840ASEH Datasheet, PDF (15/15 Pages) Intersil Corporation – Radiation Hardened, High Performance Industry Standard Single-Ended Current Mode PWM Controller

ISL78840ASEH, ISL78841ASEH, ISL78843ASEH, ISL78845ASEH
Ceramic Dual-In-Line Metal Seal Packages (SBDIP)
-A-
-D-
E
-B-
bbb S C A - B S D S
c1 LEAD FINISH
BASE
METAL
(c)
b1
M
M
(b)
SECTION A-A
D
BASE
PLANE
SEATING
PLANE
S1
b2
b
AA
e
ccc M C A - B S D S
S2
Q
-C- ^A
L
eA
eA/2
c
aaa M C A - B S D S
NOTES:
1. Index area: A notch or a pin one identification mark shall be located ad-
jacent to pin one and shall be located within the shaded area shown.
The manufacturer’s identification shall not be used as a pin one identi-
fication mark.
2. The maximum limits of lead dimensions b and c or M shall be measured
at the centroid of the finished lead surfaces, when solder dip or tin plate
lead finish is applied.
3. Dimensions b1 and c1 apply to lead base metal only. Dimension M
applies to lead plating and finish thickness.
4. Corner leads (1, N, N/2, and N/2+1) may be configured with a partial
lead paddle. For this configuration dimension b3 replaces dimension
b2.
5. Dimension Q shall be measured from the seating plane to the base plane.
6. Measure dimension S1 at all four corners.
7. Measure dimension S2 from the top of the ceramic body to the nearest
metallization or lead.
8. N is the maximum number of terminal positions.
9. Braze fillets shall be concave.
10. Dimensioning and tolerancing per ANSI Y14.5M - 1982.
11. Controlling dimension: INCH.
D8.3 MIL-STD-1835 CDIP2-T8 (D-4, CONFIGURATION C)
8 LEAD CERAMIC DUAL-IN-LINE METAL SEAL PACKAGE
INCHES
MILLIMETERS
SYMBOL MIN
MAX
MIN
MAX NOTES
A
-
0.200
-
5.08
-
b
0.014
0.026
0.36
0.66
2
b1
0.014
0.023
0.36
0.58
3
b2
0.045
0.065
1.14
1.65
-
b3
0.023
0.045
0.58
1.14
4
c
0.008
0.018
0.20
0.46
2
c1
0.008
0.015
0.20
0.38
3
D
-
0.405
-
10.29
-
E
0.220
0.310
5.59
7.87
-
e
0.100 BSC
2.54 BSC
-
eA
0.300 BSC
7.62 BSC
-
eA/2
0.150 BSC
3.81 BSC
-
L
0.125
0.200
3.18
5.08
-
Q
0.015
0.060
0.38
1.52
5
S1
0.005
-
0.13
-
6
S2
0.005
-
0.13
-
7
α
90^o
105^o
90^o
105^o
-
aaa
-
0.015
-
0.38
-
bbb
-
0.030
-
0.76
-
ccc
-
0.010
-
0.25
-
M
-
0.0015
-
0.038
2
N
8
8
8
Rev. 0 4/94
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in the quality certifications found at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time
without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be
accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
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15
FN7952.0
May 29, 2012