2 AMPERE — 1/2 CRYSTAL CAN RELAY
COIL TRANSIENT SUPPRESSED
Product Description
2K-7940
A series of half crystal can hermetically sealed relays manufactured in compliance to the referenced Military specification.
Non polarized, non latching hermetically sealed relay with bifilar coil. The product’s advanced design provides superior performance in the envi-
ronmental and operational requirements of today’s sophisticated equipment. Volume production coupled ensure product consistency and the
highest degree of reliability.
The following construction features ensure the highest reliability in extreme environments:
All welded relay construction
Cleaning and sealing techniques ensures maximum internal cleanliness
Low level to 2 amperes switching
2 form C, DPDT contacts, special metal alloy with gold plating
Frame, armature design and force / mass ratio provides exceptional immunity to shock and vibration.
Series Type
2K-7940
2 form C, DPDT
Environmental and Physical Specifications
Temperature (Ambient)
Shock
Vibration (sinusoidal)
Vibration (random)
Acceleration
Sealing
Weight
- 65°C to + 125°C
100 g, 6 msec.
30 g, 10 to 3000 Hz
0,4g / Hz, 50 to 2000 Hz
50 g
All welded, Hermetic
0,46 oz. (13,0 grams) max.
Compliant to
MIL-PRF-39016/22
Electrical Characteristics
(over the Temperature range. Unless otherwise noted)
Coil Data
Contact Rating
See Typical Characteristics chart
Type Load
Contact Load
10 to 50 µA / 10 to 50 mV dc or peak ac
2 A / 28 Vdc
0,1 A / 115 Vac, 60 & 400 Hz
4 A / 28 Vdc
0.5 A / 28 Vdc (200 mH)
0,16 A / 28 Vdc
1.000.000
100.000
100.000
100
100.000
100.000
Cycles min.
(Note: All ratings with grounded
Low Level
case)
Resistive
Overload
Inductive
Lamp
Contact Resistance
Operate Time
Release Time
Contact Bounce
Contact Stabilization Time
Dielectric Strenght
Insulation Resistance
Intercontact Capacitance
Sensitivity
0,05Ω max. initial, 0,1Ω max. after life, 0,15 ohm max. after low level
5,0 ms max.
5,0 ms max.
2,0 ms max.
2,5 ms max.
1.000 Vrms min., 60 Hz, all points, 500 Vrms min. between open contacts and coil to case, at sea level
350 Vrms min., 60 Hz, all points at 70,000 ft.
1.000 MΩ min. all points at 500 Vdc
2,5 pF between contacts
250 mW at pull-in, 1 W at nominal rated coil voltage, at 25°C
High Generation S.r.l.
Tel: + 39 06 96873136
Fax: + 39 06 94443060
87
REV. 0/2012
2 AMPERE — 1/2 CRYSTAL CAN RELAY
COIL TRANSIENT SUPPRESSED
2K-7940
Terminal Style
L
Solder Lug
PC
Pin (Printed circuit)
W
Wire Lead
Schematic Diagram
Blue Bead
A1
.190
(4,83)
.187 (4,75)
± .020 (0,51)
B2
X1 B3
2.950 (74,93)
min.
A3
Note:
Dimensions are shown in inches (millimetres)
Terminal Spacing is .200 (5,08)
X2
A2
B1
Terminal diameter is .030 (0,76) + .003 (0,07) - .002 (0,05)
Note:
Schematics are viewed from terminals
Mounting Style
.810 (20,57)
max.
1.320 (33,53) max.
1.320 (33,53)
max.
.015
(0,38)
min.
1.078 (27,38)
.120 (3,05)
±.002 (0,05)
Note:
Failure rate reliability level
FR
% / 10000
cycles
3,0
1,0
.410 (10,41)
max.
.125 (3,18)
1.078 (27,38)
.120 (3,05)
±.002 (0,05)
1.062 (26,97)
.250
(6,35)
.015 (0,38)
min.
Military
Suffix
L
M
Hi-G
Suffix
A
B
.410 (10,41)
max.
1.062 (26,97)
NONE
B
C
Note:
Dimensions are shown in inches (millimetres)
Terminal Spacing is .200 (5,08)
Terminal diameter is .030 (0,76) + .003 (0,07) - .002 (0,05)
Typical Characteristics at 25°C
Terminals
Mount
Coil Voltage
Vdc
Wire Lead
Max.
DC Coil
Resistance
Nom.
±10% @ 25°C
Operate Characteristics - Over the Temperature Range
Pick Up
Vdc
Max.
Dropout
Vdc
Min.
Max. Coil
Transient
Voltage
Solder Lug
Plug-in
004
007
-
011
014
-
005
-
009
012
-
016
006
008
010
013
015
017
B
C
NONE
B
C
NONE
How to Order (Part Numbering System)
2K-7940
- 004
A
Reliability levels A or B
32,0
26,5
700
20,0
1,0
48,0
15,0
12,0
160
9,6
0,5
24,0
Series
Dash number (see characteristics table)
Hi-G ITALIA S.r.l.
SS. Appia Km. 56.420 Cisterna di Latina - Italy
Tel: + 39 06 9699666
Fax: + 39 069698688
88
REV. 03/2007
