Littelfuse HE721B2400 Miniature dual in-line package Datasheet

Reed Relays
DIL Packaged > HE700
HE700 Miniature Dual In-line Reed Relay
Description
The HE700 is a miniature reed relay in a DIL package with a choice of normally
open, normally open high voltage, normally closed or changeover contacts
capable of switching up to 300Vdc at 10W. It is available with 5V, 12V, and 24V
coils and diode suppression and also available with magnetic shield option.
Features
• Miniature dual in-line package
• Optional coil suppression diode to
protect coil drive circuits
• External magnetic shield option
• Diode suppression option
• RoHS Compliant
Benefits
Agency Approvals
Agency
• One relay, various contacts choices
reducing space and cost without
compromising flexibility
• Lower power coil consumption than
competing electromechanical
devices.
Agency File Number
E47258
Note: Contact Littelfuse for specific agency approval ratings.
• Hermetically sealed switching
contact is immune to the effects of
its environment
• Transfer molded package gives
maximum component protection
Applications
• Industrial Equipments
• Instrumentation
• Security Systems
• Telecom Equipments
• Process Control Systems
Dimensions
Dimensions in mm (inch)
19.05
(.750)
20.14
(.793)
W
H
0.51
(.020)
0.51
(.020)
10.16 NOM.
(.400)
0.51NOM.
(.020)
H
3.00 NOM.
(.118)
15.24 NOM.
(.600)
10.16 NOM.
(.400)
0.51NOM.
(.020)
15.24 NOM.
(.600)
Fig. 1: HE700
0.25 NOM.
(.010)
3.00 NOM.
(.118)
Fig. 2: HE751
9.52
(.375)
Fig. 3: HE700 (All)
Table 1: Dimension
Relay Type
HE700
Body Type
L
W
H
Transfer Molded
19.05 (.750)
7.22 (.284)
5.50 (.217)
External Shield
20.14 (.793)
7.62 (.300)
5.82 (.229)
© 2016 Littelfuse
Revised: 03/04/16
Specifications are subject to change without notice.
littelfuse.com
Reed Relays
DIL Packaged > HE700
HE700 Miniature Dual In-line Reed Relay
Table 2: Electrical and Operating Characteristics @ 25°C
Column Number
Contact Type
Relay Types
Contact Rating
5
Timing
Environmental
2
3
4
Form A
SPST, DPST
Standard
Form C
SPDT-CO
Standard
Form A
SPST
High Voltage
Form B
SPST-NC
Standard
HE751
HE721
HE721, HE722 HE721C/E/R
1
Voltage Hold-off
Resistance
1
4
Power, Switching
Voltage, Switching
Current, Switching
Current, Carry
Watt - max.
Vdc - max.
A - max.
A - max.
10
200
0.5
1.2
5
175
0.25
1.5
10
300
0.5
1.2
10
200
0.5
1.5
Across Open Contacts
Contacts to Coil
Coil to E. Shield
Between Isolated Terminals
Vdc - min.
Vac - min.
Vac - min.
Vac - min.
250
500
150
500
200
500
150
N/A
450
4000
N/A
N/A
250
500
N/A
N/A
Contact, Initial
Insulation Across Open Contacts
Insulation Between Isolated
Terminals
Ω max.
Ω min.
Ω min.
0.150
1010
1010
0.200
1010
1010
0.150
1010
1010
0.150
1010
1010
Operate Time
Release Time
ms - max.
ms - max.
1.0
1.0
3.0
3.0
1.0
1.0
1.0
1.0
Temperature, Operating
Temperature, Storage
Vibration Resistance
Shock Resistance
°C
°C
G - max. 10-2000 Hz.
G - max. 11 ms ½ sine
-40 to +85
-40 to +105
20
50
-40 to +85
-40 to +105
20
50
-20 to +85
-40 to +105
20
50
-40 to +85
-40 to +105
20
50
Part Numbering System
HE7X - X - X - X - XX
Model Number
HE72 - Standard
HE75 - High Voltage
Number of Contacts
1 and 2
Contact Type
A - Form A (SPST-NO or DPST-NO)
B - Form B (SPST-NC)
C - Form C (SPDT-CO)
E - Form C (SPDT-CO) alternate foot print 1
R - Form C (SPDT-CO) alternate foot print 2
General Options
00 - No Options
10 - Coil Suppression Diode
20 - Electrostatic Shield
30 - Coil Diode and E.S. Shield
40 - External Magnetic Shield
50 - External Magnetic Shield and Diode
Standard Coil
05 - 5 Volt
12 - 12 Volt
24 - 24 Volt
Note: Not all combinations of Part Number suffixes are available. Contact Littelfuse for details.
© 2016 Littelfuse
Revised: 03/04/16
Specifications are subject to change without notice.
littelfuse.com
Reed Relays
DIL Packaged > HE700
HE700 Miniature Dual In-line Reed Relay
Table 3: Coil Characteristics @ 25°C
Contact
Form
Electrical and
Operating
Characteristics
Dimensions
Part Number
Nominal
Coil Voltage
Vdc
Coil
Resistance
±10% Ohms
Must
Operate
Vdc
Must
Release
Vdc
Maximum
Coil Voltage
Vdc
1A
SPST-NO
See Table 2
Column 1
Figure 1
HE721A0500
HE721A1200
HE721A2400
5
12
24
500
1000
2150
3.75
8.0
16.0
0.5
1.0
2.0
12
31
46
5
12
24
500
500
2150
3.75
9.0
18.0
0.5
1.0
2.0
6.5
14
28
Top View 2.54mm (0.1") Grid
Dot on Case: Pin 1
Numbers not printed on case.
Notes 1 and 2
1B
SPST-NC
See Table 2
Column 4
Figure 1
HE721B0500
HE721B1200
HE721B2400
1C
SPDT-CO
See Table 2
Column 2
Figure 1
HE721C0500
HE721C1200
HE721C2400
5
12
24
200
500
2000
3.75
8.0
16.0
0.5
1.0
2.0
14
22
44
1C
SPDT-CO
See Table 2
Column 2
Figure 1
HE721E0500
HE721E1200
HE721E2400
5
12
24
200
500
2000
3.75
8.0
16.0
0.5
1.0
2.0
14
22
44
1C
SPDT-CO
See Table 2
Column 2
Figure 1
HE721R0500
HE721R1200
HE721R2400
5
12
24
200
500
2000
3.75
8.0
16.0
0.5
1.0
2.0
14
22
44
2A
DPST-NO
See Table 2
Column 1
Figure 1
HE722A0500
HE722A1200
HE722A2400
5
12
24
200
500
2150
3.75
8.0
16.0
0.5
1.0
2.0
12
22
46
1A
SPST-NO
High Voltage
See Table 2
Column 3
Figure 2
HE751A0500
HE751A1200
HE751A2400
5
12
24
500
1000
2150
3.75
8.0
16.0
0.5
1.0
2.0
12
31
46
Notes:
1. HE721B - Exceeding recommended voltage may cause contact reclosure.
2. Optional external magnetic shield not available on Form B relays.
HE700 PCB LAYOUT (Bottom View)
Ø0.61 HOLE
(.024)
2.54
(.100)
12.70
(.500)
15.24
(.600)
7.62
(.300)
Packaging
Packaging Option
Packaging Specification
Bulk
© 2016 Littelfuse
Revised: 03/04/16
Specifications are subject to change without notice.
Bulk
Quantity
1000/5000
Quantity & Packaging Code
N/A
Taping Width
N/A
littelfuse.com
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