INCH-POUND
The documentation and process conversion
measures necessary to comply with this revision
shall be completed by 22 January 2003.
MIL-PRF-19500/385D
AMENDMENT 2
22 October 2002
SUPERSEDING
AMENDMENT 1
28 November 2001
PERFORMANCE SPECIFICATION
SEMICONDUCTOR DEVICE, FIELD EFFECT TRANSISTORS, N-CHANNEL, SILICON
TYPES 2N4856 THROUGH 2N4861, JAN, JANTX, JANTXV, JANS, AND UB
This amendment forms a part of MIL-PRF-19500/385D, dated 12 April 2001, and is
approved for use by all Departments and Agencies of the Department of Defense.
PAGE 1
TITLE; delete and substitute: "SEMICONDUCTOR DEVICE, FIELD EFFECT TRANSISTORS, N-CHANNEL,
SILICON TYPES 2N4856 THROUGH 2N4861, 2N4856UB THROUGH 2N4861UB, JAN, JANTX, JANTXV AND
JANS".
1.1, second sentence, delete: "Five" and substitute "Four".
1.2, delete and substitute: "1.2 Physical dimensions. See figure 1 (TO-18) and figure 2 (UB surface mount)."
1.3, table, delete and substitute:
"
P
T
(1)
T
A
= +25°C
P
T
(2)
T
C
=
+25°C
V
DS
, V
DG
2N4856
2N4857
2N4858
W
W
V dc
V
GS
2N4856
2N4857
2N4858
V dc
I
G
2N4859
2N4860
2N4861
V dc
R
θ
JA
T
J
and
T
STG
2N4859
2N4860
2N4861
V dc
mA dc
50
°C/W
325
325
°C
-65 to
+200
0.36
0.40 All UB (3)
(1)
(2)
(3)
1.8
40
30
40
30
Derate linearly 2.06 mW/°C for T
A
> +25°C.
Derate linearly 10.3 mW/°C for T
C
> +25°C.
Derate linearly 3.08 mW/°C above T
C
=
+70°C."
PAGE 2
1.4, after primary electrical characteristics, add " (1) ".
1.4, I
DSS
column, delete "(1)" and substitute: "(2)".
1.4, note (1), delete and substitute: "(1) These characteristics applicable to all package styles."
1.4, add new note (2): "(2) Pulsed (see 4.5.1) ".
AMSC N/A
1 of 3
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
FSC 5961
MIL-PRF-19500/385D
AMENDMENT 2
PAGE 3
* FIGURE 1. delete and substitute:
"
Symbol
CD
CH
HD
LC
LD
LL
LU
L1
L2
Q
TL
TW
r
α
P
Dimensions
Inches
Millimeters
Min
Max
Min
Max
.178
.195
4.52
4.95
.170
.210
4.32
5.33
.209
.230
5.31
5.84
.100 TP
2.54 TP
.016
.021
0.41
0.53
.500
.750
12.70 19.05
.016
.019
0.41
0.48
.050
1.27
.250
6.35
.030
0.76
.028
.048
0.71
1.22
.036
.046
0.91
1.17
.010
0.25
45° TP
45° TP
.100
2.54
Note
5
TO-18
4, 5
6
7,8
7,8
7,8
7,8
7,8
5
3,4
3, 10
6
NOTES:
1. Dimension are in inches.
2. Metric equivalents are given for general information
only.
3. Beyond r (radius) maximum, TL shall be held for a
minimum length of .011 (0.28 mm).
4. Dimension TL measured from maximum HD.
5. Body contour optional within zone defined by HD, CD,
and Q.
6. Leads at gauge plane .054 +.001 -.000 inch (1.37
+0.03 -0.00 mm) below seating plane shall be within
.007 inch (0.18 mm) radius of true position (TP) at
maximum material condition (MMC) relative to tab at
MMC. The device may be measured by direct
methods or by the gauge and gauging procedure shown in figure 2.
7. Dimension LU applies between L
1
and L
2
. Dimension LD applies between L
2
and LL minimum. Diameter is
uncontrolled in L
1
and beyond LL minimum.
8. All three leads.
9. The collector shall be internally connected to the case.
10. Dimension r (radius) applies to both inside corners of tab.
11. In accordance with ANSI Y14.5M, diameters are equivalent to
φx
symbology.
12. Lead 1 = source, lead 2 = drain, lead 3 = gate.
FIGURE 1. Physical dimensions TO-206AA (formerly TO-18)."
2
MIL-PRF-19500/385D
AMENDMENT 2
PAGE 4
FIGURE 2, delete: "1 = base, 2 = emitter, 3 = collector" and substitute: "1 = drain, 2 = source, 3 = gate".
PAGE 5
3.5.1, Delete “MOS”.
3.5.1.e, Delete “MOS”.
* 3.8, delete and substitute "3.8 Marking Marking shall be in accordance with MIL-PRF-19500, except for the UB
suffix package. Marking on the UB package shall consist of an abbreviated part number, the date code, and the
manufacturers symbol or logo. The prefixes JAN, JANTX, JANTXV, and JANS can be abbreviated as J, JX,
JV, and JS respectively."
The margins of this amendment are marked with an asterisk to indicate where changes from the previous
amendment were made. This was done as a convenience only and the Government assumes no liability whatsoever
for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this
document based on the entire content irrespective of the marginal notations and relationship to the last previous
amendment.
Custodians:
Army - CR
Navy - EC
Air Force - 11
DLA - CC
Review activities:
Army - MI
Air Force - 71, 99
Preparing activity:
DLA - CC
(Project 5961-2668)
3
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