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参数资料
| 型号： | W24257C-70LL |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | SRAM |
| 英文描述： | 32K X 8 STANDARD SRAM, 70 ns, PDIP28 |
| 封装： | 0.600 INCH, PLASTIC, DIP-28 |
| 文件页数： | 11/11页 |
| 文件大小： | 211K |
| 代理商： | W24257C-70LL |
Preliminary W24257C
Publication Release Date: January 1999
- 9 -
Revision A1
PACKAGE DIMENSIONS
28-pin P-DIP
Seating Plane
1. Dimension D Max. & S include mold flash or
tie bar burrs.
2. Dimension E1 does not include interlead flash.
3. Dimension D & E1 include mold mismatch and
are determined at the mold parting line.
6. General appearance spec. should be based on
final visual inspection spec.
.
1.63
1.47
0.064
0.058
Notes:
Symbol
Min. Nom. Max.
Max.
Nom.
Min.
Dimension in Inches
Dimension in mm
A
B
c
D
e
A
L
S
A
1
2
E
0.060
1.52
0.210
5.33
0.010
0.150
0.016
0.155
0.018
0.160
0.022
3.81
0.41
0.25
3.94
0.46
4.06
0.56
0.008
0.120
0.670
0.010
0.130
0.014
0.140
0.20
3.05
0.25
3.30
0.36
3.56
0.540
0.550
0.545
13.72
13.97
13.84
17.02
15.24
14.99
15.49
0.600
0.590
0.610
2.29
2.54
2.79
0.090
0.100
0.110
B1
1
e
E1
a
1.460
1.470
37.08
37.34
0
15
0.090
2.29
0.650
0.630
16.00
16.51
4. Dimension B1 does not include dambar
protrusion/intrusion.
5. Controlling dimension: Inches.
15
0
eA
2
A
a
c
E
Base Plane
1
A
1
e
L
A
S
1
E
D
1
B
28
1
15
14
28-pin P-DIP Skinny
1. Dimension D Max. & S include mold flash or
tie bar burrs.
2. Dimension E1 does not include interlead flash.
3. Dimension D & E1 include mold mismatch and
are determined at the mold parting line.
6. General appearance spec. should be based on
final visual inspection spec.
1.63
1.47
0.064
0.058
Notes:
Symbol
Min.
Nom.
Max.
Nom.
Min.
Dimension in Inches
Dimension in mm
A
B
c
D
e
A
L
S
A
1
2
E
0.060
1.52
0.175
4.45
0.010
0.125
0.016
0.130
0.018
0.135
0.022
3.18
0.41
0.25
3.30
0.46
3.43
0.56
0.008
0.120
0.370
0.010
0.130
0.014
0.140
0.20
3.05
0.25
3.30
0.36
3.56
0.293
0.288
0.283
7.44
7.32
7.19
9.40
7.87
7.62
8.13
0.310
0.300
0.320
2.29
2.54
2.79
0.090
0.100
0.110
B1
1
e
E1
a
1.388
1.400
35.26
35.56
0°
15°
0.055
1.40
0.350
0.330
8.38
8.89
15°
0°
4. Dimension B1 does not include dambar
protrusion/intrusion.
5. Controlling dimension: Inches.
e
A
a
c
E
Base Plane
Mounting Plane
1
A
1
e
L
A
S
1
E
D
1
B
28
15
1
14
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| W24257K70LL | 制造商:WINBOND 功能描述:New |
| W24257Q-70L | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x8 SRAM |
| W24257Q-70LE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x8 SRAM |
| W24257Q-70LL | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x8 SRAM |
| W24257S-70L | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x8 SRAM |
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