Datasheet

littelfuse.com© 2016 Littelfuse Revised: 03/04/16
Specifications are subject to change without notice.
Packaging
Packaging Option Packaging Specification Quantity Quantity & Packaging Code Taping Width
Bulk Bulk 1000/5000 N/A N/A
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
Top View 2.54mm (0.1") Grid
Dot on Case: Pin 1
Numbers not printed on case.
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
1B
SPST-NC
See Table 2
Column 4
Figure 1
HE721B0500
HE721B1200
HE721B2400
5
12
24
500
500
2150
3.75
9.0
18.0
0.5
1.0
2.0
6.5
14
28
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
HE700 PCB LAYOUT (Bottom View)
12.70
(.500)
Ø0.61 HOLE
(.024)
15.24
(.600
)
2.54
(.100)
7.62
(.300)
Notes:
1. HE721B - Exceeding recommended voltage may cause contact reclosure.
2. Optional external magnetic shield not available on Form B relays.
Notes 1 and 2