Document
Reed Relays
DIL Packaged > HE700
HE700 Miniature Dual In-line Reed Relay
Agency Approvals
Agency
Agency File Number
E47258
Note: Contact Littelfuse for specific agency approval ratings.
Dimensions
Dimensions in mm (inch)
19.05 (.750)
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
• One relay, various contacts choices reducing space and cost without compromising flexibility
• Lower power coil consumption than competing electromechanical devices.
• Hermetically sealed switching contact is immune to the effects of its environment
• Transfer molded package gives maximum component protection
Applications
• Security Systems • Telecom Equipments • Process Control Systems
• Industrial Equipments • Instrumentation
20.14 (.793)
W
HH
0.51 (.020) 0.51NOM.
(.020)
10.16 NOM. (.400)
15.24 NOM. (.600)
Fig. 1: HE700
0.51 (.020)
3.00 NOM. (.118)
0.51NOM. (.020)
Table 1: Dimension
Relay Type
Body Type
10.16 NOM. (.400)
15.24 NOM. (.600)
Fig. 2: HE751
L
HE700
Transfer Molded External Shield
19.05 (.750) 20.14 (.793)
3.00 NOM. (.118)
0.25 NOM. (.010)
9.52 (.375)
Fig. 3: HE700 (All)
W 7.22 (.284) 7.62 (.300)
H 5.50 (.217) 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
1234
Contact Type Relay Types
Form A SPST, DPST
Standard
Form C SPDT-CO Standard
HE721, HE722 HE721C/E/R
Form A SPST High Voltage HE751
Contact Rating 1
Power, Switching Voltage, Switching Current, Switching
Current, Carry
Watt - max.
10
5
10
Vdc - max.
200 175 300
A - max.
0.5 0.25 0.5
A - max.
1.2 1.5 1.2
Voltage Hold-off 4
Across Open Contacts Contacts to Coil Coil to E. Shield
Between Isolated Terminals
Vdc - min. Vac - min. Vac - min. Vac - min.
250 200 450 500 500 4000 150 150 N/A 500 N/A N/A
Resistance 5
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
Timing
Operate Time Release Time
ms - max. ms - max.
1.0 3.0 1.0 1.0 3.0 1.0
Environmental
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
Form B SPST-NC Standard
HE721 10 200 0.5 1.5 250 500 N/A N/A
0.150 1010 1010
1.0 1.0 -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
Note: Not all combinations of Part Number suffixes are available. Contact Littelfuse for details.
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
© 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
1A SPST-NO
1B SPST-NC
Electrical and Operating
Characteristics
Dimensions
See Table 2 Column 1
Figure 1
Part Number
HE721A0500 HE721A1200 HE721A2400
See Table 2 Column 4
Figure 1
HE721B0500 HE721B1200 HE721B2400
Nominal Coil Voltage
Vdc
5 12 24
5 12 24
Coil Resistance ±10% Ohms
500 1000 2150
500 500 2150
Must Operate
Vdc
Must Maximum Release Coil Voltage
Vdc Vdc
3.75 0.5 8.0 1.0 16.0 2.0
12 31 46
3.75 9.0 18.0
Notes 1 and 2
0.5 6.5 1.0 14 2.0 28
Top View 2.54mm (0.1") Grid Dot on Case: Pin 1
Numbers not printed on case.
1C SPDT-CO
See Table 2 Column 2
Figure 1
HE721C0500 HE721C1200 HE721C2400
1C SPDT-CO
See Table 2 Column 2
Figure 1
HE721E0500 HE721E1200 HE721E2400
1C SPDT-CO
See Table 2 Column 2
Figure 1
HE721R0500 HE721R1200 HE721R2400
2A DPST-NO
See Table 2 Column 1
Figure 1
HE722A0500 HE722A1200 HE722A2400
1A SPST-NO High Voltage
See Table 2 Column 3
Figure 2
HE751A0500 HE751A1200 HE751A2400
Notes: 1. HE721B - Exceeding recommended voltage may cause contact reclosure. 2. Optional external magnetic shield not available on Form B relays.
5 12 24
5 12 24
5 .