littelfuse.com© 2016 Littelfuse Revised: 03/04/16
Specifications are subject to change without notice.
HE3300 Miniature Single In-line Reed Relay
Description
The HE3300 is a miniature reed relay in a SIL package with a choice of normally
open, normally open high voltage or changeover contacts capable of switching
up to 300Vdc at 10W. It is available with 5V, 12V, and 24V coils and has external
magnetic shield options.
Agency Approvals
Agency Agency File Number
E47258
Reed Relays
Features
• Miniature single in-line package
• High voltage switching version
• Normally open and change over
contact configurations available
• External magnetic shield option
Benefits
• Single in-line configuration allows
high packing densities, minimizing
space and cost
• Lower power coil consumption than
competing electromechanical
devices
• Hermetically sealed switching
contact is immune to its
environment
• Transfer molded package gives
maximum component protection
Applications
• Security Systems
• Telecom Equipments
• Process Control Systems
• Automatic Test Equipments
• Instrumentation
Dimensions
Dimensions in mm (inch)
SIL Packaged > HE3300
Table 1: Dimension
Relay Type Body Type L W H
HE3300
Transfer Molded 24.13 (.950) 7.00 (.276) 7.40 (.291)
External Shield 24.90 (.980) 7.60 (.299) 7.80 (.307)
3.00 NOM.
(.118)
0.51
(0.020)
10.16 NOM.
(.400)
20.32 NOM.
(.800)
Fig. 1: HE3321A, HE3351A
(0.020)
3.00 NOM.
(.118)
W
H
0.51
(0.020)
10.16 NOM.
(.400)
(.980)
(.950)
20.32 NOM.
(.800)
2.54 NOM.
(.100)
0.25 NOM.
(.010)
Fig. 2: HE3321C Fig. 3: HE3300 (All)
0.51 NOM.
(0.020)
Note: Contact Littelfuse for specific agency approval ratings.
