Switching Diodes 1N6638 Series
1N6638, 1N6639, 1N6640, 1N6641, 1N6642, 1N6643,
1N6638U & US, 1N6639U & US, 1N6640U & US,
1N6641U & US 1N6642U & US, 1N6643U & US
Features
Available in JAN, JANS, JANTX, JANTXV
per MILPRF19500/578 & /609
Switching Diodes
NonCavity Glass Plackage
Category I Metallurgically Bonded
Maximum Ratings
Operating Temperature: -65C to +175C Thermal Resistance:
Storage Temperature: -65C to +175C
(R ): U & US 40 C/W maximum at L = 0
JEC
Operating Current: 300mA See Figure 6
Derating: See Figure 5
(R ): Leaded 150 C/W maximum at L = .375
JL
See Figure 7
Surge Current: I = 2.5A, half sine wave,
FSM
P = 8.3ms
Thermal Impedance: (Z ): 25 C/W maximum
W JX
Electrical Specifications @ TA = + 25 C ( Unless Otherwise Specified )
V / t@C C t I I I I
FR fr T1 T2 rr R1 R2 R3 R4
V @ I V I = 200 mA V =0 V V =1.5 V I = 10mA V =V V =20V V =20V V = V
BR R WRM F R R R R RWM R R R RWM
TYPES I = 10mA T = 150C T = 150C
F A A
V(pk) A V(pk) V t
FR fr
V(pk) ns pF pF ns nA dc nA dc A dc A dc
1N6638, U & US 150 100 125 5.0 20 2.5 2.0 4.5 35 500 50 100
1N6639, U & US 100 10 75 5.0 10 2.5 4.0 100 90
1N6640, U & US 75 10 50 5.0 10 2.5 4.0 100 90
1N6641, U & US 75 10 50 5.0 10 3.0 5.0 100 90
1N6642, U & US 100 100 75 5.0 20 5.0 2.8 5.0 25 500 50 100
1N6643, U & US 75 100 50 5.0 20 5.0 2.8 6.0 50 500 75 100
V @ I V @ I I
F F F2 F F
TYPES T = -55C
A
V dc V dc V dc mA
(min) (max) (max) (pulsed)
1N6638, U & US 1.1 1.2 200
0.8 10
1N6639, U & US 1.2 1.3 500
1N6640, U & US 0.54 0.62 - 1
0.76 0.86 50
0.82 0.92 100
0.87 1.0 1.1 200
1N6641, U & US 1.1 1.2 200
1N6642, U & US 0.8 10
1.2 1.2 100
1N6643, U & US 0.8 10
1.2 1.4 100
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Revision Date: 2/5/2013
Switching Diodes 1N6638 Series
Outline Drawing
LEADED DESIGN DATA
CASE: D5D, Hermetically sealed glass
case, per MILPRF19500/578 & /609
LEAD FINISH: Tin/Lead
LEAD MATERIAL: Copper clad steel
POLARITY: Cathode end is banded.
PACKAGE WEIGHT: 0.150g
U & US DESIGN DATA
CASE: D5D, Hermetically sealed glass
case, per MILPRF19500/578 & /609
LEAD FINISH: Tin/Lead
END CAP MATERIAL (U, US): Copper
POLARITY: Cathode end is banded.
PACKAGE WEIGHT: 0.095g
MOUNTING SURFACE SELECTION: The
Axial Coefficient of Expansion (COE) of this
device is approximately +4PPM/C. The
COE of the Mounting Surface System
should be selected to provide a suitable
match with this device.
NOTES:
1. Dimensions are in inches. Millimeters are given for general information only.
2. Dimension BD shall be measured at the largest diameter.
3. The specified lead diameter applies in the zone between .050 inch (1.27 mm)
from the diode body to the end of the lead. Outside of this zone lead shall not exceed BD.
4. In accordance with ASME Y14.5M, diameters are equivalent to x symbology.
5. Usuffix parts are structurally identical to the USsuffix parts.
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TEL: 603-641-SEMI (7364) metelics-sales@aeroflex.com www.aeroflex.com/metelics
Revision Date: 2/5/2013