A . .. % thlelluse Eypmlm-Apphud \ mm p-mm
littelfuse.com© 2018 Littelfuse Revised: 12/18/18
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
RoHS Compliant
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
0.51 NOM.
(0.020)
3.00 NOM.
(.118)
W
H
0.51
(0.020)
10.16 NOM.
(.400)
24.90
(.980)
24.13
(.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.
% Litlelluse" mu
littelfuse.com© 2018 Littelfuse Revised: 12/18/18
Specifications are subject to change without notice.
HE3300 Miniature Single In-line Reed Relay
Reed Relays
SIL Packaged > HE3300
Table 2: Electrical and Operating Characteristics @ 25°C
Column Number 1 2 3
Contact Type Form A
SPST-NO
Standard
Form A
SPST-NO
High Voltage
Form C
SPST-CO
Standard
Relay Types HE3321A HE3351A HE3321C
Contact Rating 1
Power, Switching
Voltage, Switching
Current, Switching
Current, Carry
Watt - max.
Vdc - max.
A - max.
A - max.
10
200
0.5
1.2
10
300
0.5
1.5
5
175
0.25
1.5
Voltage Hold-off 4Across Open Contacts
Contacts to Coil Vdc - min.
Vac - min. 250
2500 450
2500 200
2500
Resistance 5Contact, Initial
Insulation Across Open Contacts
Insulation Between Isolated Terminals
Ω max.
Ω min.
Ω min.
0.150
1010
1010
0.150
1010
1010
0.200
1010
1010
Timing Operate Time
Release Time ms - max.
ms - max. 1.0
1.0 1.0
1.0 3.0
3.0
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
-20 to +85
-40 to +105
20
50
-40 to +85
-40 to +105
20
50
Table 3: Coil Characteristics @ 25°C
Contact
Form and Type
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 See
Figure 1
HE3321A0400
HE3321A1200
HE3321A2400
5
12
24
500
500
2000
3.75
9.0
18.0
0.5
1.0
2.0
22
22
44
1C
SPDT-CO See Table 2
Column 3 See
Figure 2
HE3321C0500
HE3321C1200
HE3321C2400
5
12
24
125
500
2000
3.75
9.0
18.0
0.5
1.0
2.0
11
22
44
1A
SPST-NO
High Voltage
See Table 2
Column 2 See
Figure 1
HE3351A0500
HE3351A1200
HE3351A2400
5
12
24
125
500
2000
3.75
9.0
18.0
0.5
1.0
2.0
11
22
44
12
34
12
34
12 35 4
HE3321A HE33XX X-XX XX 93¢ i844 i
littelfuse.com© 2018 Littelfuse Revised: 12/18/18
Specifications are subject to change without notice.
Packaging
Packaging Option Packaging Specification Quantity Quantity & Packaging Code Taping Width
Bulk Bulk 500 N/A N/A
Part Numbering System
HE33XX - X - XX - XX
Contact Type
A - Form A (SPST-NO)
C - Form C (SPDT-CO)
General Options
00 - No Options
40 - External Magnetic Shield
Model Number
HE3321 - Standard
HE3351 - High Voltage
Standard Coil
04 - 5 Volt
12 - 12 Volt
24 - 24 Volt
Reed Relays
SIL Packaged > HE3300
HE3300 Miniature Single In-line Reed Relay
HE3300 PCB LAYOUT (Bottom View)
0.80 HOLE Ø(.032)
HE3321C
HE3321A
HE3351A
5.08 TYP (.200)
10.16 (.400) 20.32 (.800)
2.54 (.100)
Note: Not all combinations of Part Number suffixes are available.
Contact Littelfuse for details.