Series 104
High Voltage SIL/SIP Reed Relays
Up to 4 kV stand-off NEW
Package Type
Stacking on 0.25 Inches pitch
3
Small size
4
Internal mu-metal magnetic screen
One or two switches in a single package
1 Form A, 2 Form A & 1 Form B configurations
Dry and mercury wetted switches available
5 V, 12 V or 24 V Coils with optional internal diode
Ideal for transformer or cable testing
Additional build options are available including many
pin configurations
Many benefits compared to industry standard relays (see last page)
1
2
The Series 104 reed relays are ideal for such applications as transformer or cable testing or any other automatic test
equipment where high voltages are involved.
Where mains voltages are switched, for example to control and isolate S.C.R. or triac gates, they are an ideal choice.
The range features an internal mu-metal screen to eliminate problems that would otherwise be experienced due to
magnetic interaction when they are closely stacked.
Four types of dry switches are available, capable of standing-off 1.5, 2, 3 or 4kV d.c. The 3kV & 4kV versions have an
increased clearance between the switch and coil pins to accommodate the higher voltage. Even higher voltage ratings are
available to special order, please contact our sales office for further information.
Mercury wetted devices are also available for applications where bounce free switching is required. These are rated at 1500
volts d.c. minimum stand-off, 500 volts d.c. switching at up to 50 watts.
Magnetic
Interaction
Magnetic
Interaction
Other Manufacturers’
Unscreened relays
Unscreened
Other Manufacturers’
Partially screened relays
40%
Pickering
relays
30%
Percentage
Interaction
20%
(Change in
operate voltage)
10%
Key:
Internal
mu-metal
screen
Other Unscreened
relays
Complete
mu-metal
can
109P
110
116
111P
112 117 115
113
108
109
111 119
Partially
screened
106
104
114
105
0.19”
0.245”
0.26”
101
100
100HV
100HC
0.29”
0.40”
107
0.145”
Relay Package Width (Inches)
This chart demonstrates the percentage changes in operate voltage due to magnetic interaction depending on the level of
magnetic screening offered from the relay package. For more information on magnetic interaction click here.
0.145”
0.1
0.2
0.19”
0.245”
Package Width (Inches)
0.3
1
0.4
0.26”
0.29”
0.40”
pickeringrelay.com
ISSUE 1.7 JAN 2022
50%
Specification
High Voltage SIL/SIP Reed Relays – Series 104
Switch Ratings - Dry Switches
1 Form A (energize to make)
1 Form B (energize to break)
2 Form A (energize to make)
1500 V d.c. min stand-off
1000 V d.c. switching at 25 W
1500 V d.c. min stand-off
1000 V d.c. switching at 25 W
1500 V d.c. min stand-off
1000 V d.c. switching at 25 W
2000 V d.c. min stand-off
1000 V d.c. switching at 25 W
2000 V d.c. min stand-off
1000 V d.c. switching at 25 W
2000 V d.c. min stand-off
1000 V d.c. switching at 25 W
3000 V d.c. min stand-off
1000 V d.c. switching at 25 W
–
–
4000 V d.c. min stand-off
1000 V d.c. switching at 25 W
–
–
Switch Ratings - Mercury Wetted Switches
1 Form A (energize to make)
2 Form A (energize to make)
1500 V d.c. min stand-off
500 V d.c. switching at 50 W
1500 V d.c. min stand-off
500 V d.c. switching at 50 W
Dry Reed: Series 104 switch ratings - contact ratings for each switch type
Max.
Switch Switch Power
switch
No
form rating
current
Max.
carry
current
Max.
switching
volts
Life
Min.
expectancy
stand-off
ops typical
volts
(see Note1)
Operate
time inc
bounce
(max)
Release
time
Special
features
1
A or B
25 W
1.0 A
1.5 A
1000
1500
108
1.0 ms
0.3 ms
High voltage
2
A or B
25 W
1.0 A
1.5 A
1000
2000
8
10
1.0 ms
0.3 ms
High voltage
3
A
25 W
1.0 A
1.5 A
1000
3000
10
8
1.0 ms
0.3 ms
High voltage
4
A
25 W
1.0 A
1.5 A
1000
4000
108
1.0 ms
0.3 ms
High voltage
Note1: Life Expectancy
The life of a reed relay depends upon the switch load and end of life criteria. For example, for an ‘end of life’ contact
resistance specification of 1 Ω, switching low loads (10 V at 10 mA resistive) or when ‘cold’ switching, typical life is approx
1 x 109 ops. At the maximum load (resistive), typical life is 1 x 107 ops. In the event of abusive conditions, e.g. high currents
due to capacitive inrushes, this figure reduces considerably. Pickering will be pleased to perform life testing with any
particular load condition.
Operating Voltages
Coil voltage - nominal
Must operate voltage - maximum at 25°C
Must release voltage - minimum at 25°C
5V
12 V
24 V
3.75 V
9V
18 V
0.5 V
1.2 V
2.4 V
2
pickeringrelay.com
Specification
High Voltage SIL/SIP Reed Relays – Series 104
Environmental Specification/Mechanical Characteristics
In the table below, the upper temperature limit can be extended to +125 °C if the coil drive voltage is increased to
accommodate the resistance/temperature coefficient of the copper coil winding. This is approximately 0.4% per °C. This
means that at 125 °C the coil drive voltage will need to be increased by approximately 40 x 0.4 =16% to maintain the
required magnetic drive level. Please contact sales@pickeringrelay.com for assistance.
Operating Temperature Range
-20 ºC to +85 ºC
Storage Temperature Range
-35 ºC to +100 ºC
Shock Resistance
50 g
Vibration Resistance (10 - 2000 Hz)
20 g
Soldering Temperature (max) (10 s max)
270 ºC
Washability (Proper drying process is recommended)
Fully Sealed
3
pickeringrelay.com
Specification
High Voltage SIL/SIP Reed Relays – Series 104
Dry Relay: Series 104 Coil Data and Type Numbers
Device Type
1 Form A
Switch No. 1 (1.5 kV)
Package Type 1 *
1 Form A
Switch No. 2 (2 kV)
Package Type 1 *
1 Form A
Switch No. 3 (3 kV)
Package Type 2
1 Form A
Switch No. 4 (4 kV)
Package Type 2
1 Form B
Switch No. 1 (1.5 kV)
Package Type 3
1 Form B
Switch No. 2 (2 kV)
Package Type 3
2 Form A
Switch No. 1 (1.5 kV)
Package Type 4
2 Form A
Switch No. 2 (2 kV)
Package Type 4
Type Number
Coil
(V)
Max.
Coil
contact
resistance resistance
(initial)
104-1-A-5/1D
5
375 Ω
104-1-A-12/1D
12
1000 Ω
104-1-A-24/1D
24
3000 Ω
104-1-A-5/2D
5
375 Ω
104-1-A-12/2D
12
1000 Ω
104-1-A-24/2D
24
3000 Ω
104-1-A-5/3D
5
220 Ω
104-1-A-12/3D
12
500 Ω
104-1-A-24/3D
24
3000 Ω
104-1-A-5/4D
5
220 Ω
104-1-A-12/4D
12
500 Ω
104-1-A-24/4D
24
3000 Ω
104-1-B-5/1D
5
750 Ω
104-1-B-12/1D
12
2000 Ω
104-1-B-24/1D
24
3000 Ω
104-1-B-5/2D
5
750 Ω
104-1-B-12/2D
12
2000 Ω
104-1-B-24/2D
24
3000 Ω
104-2-A-5/1D
5
250 Ω
104-2-A-12/1D
12
750 Ω
104-2-A-24/1D
24
2000 Ω
104-2-A-5/2D
5
250 Ω
104-2-A-12/2D
12
750 Ω
104-2-A-24/2D
24
2000 Ω
Insulation resistance
(minimum at 25 °C)
(see Note4)
Capacitance
(typical)
(see Note2)
Switch
to coil
Across
switch
Closed
switch
to coil
Across
open
switch
0.15 Ω
1012 Ω
1012 Ω
2.5 pF
0.1 pF
0.15 Ω
1012 Ω
1012 Ω
2.5 pF
0.1 pF
0.15 Ω
1012 Ω
1012 Ω
2.5 pF
0.1 pF
0.15 Ω
1012 Ω
1012 Ω
2.5 pF
0.1 pF
0.20 Ω
1012 Ω
1012 Ω
2.5 pF
0.1 pF
0.20 Ω
1012 Ω
1012 Ω
2.5 pF
0.1 pF
0.20 Ω
1012 Ω
1012 Ω
See
Note3
See
Note3
0.20 Ω
1012 Ω
1012 Ω
See
Note3
See
Note3
When an internal diode is required, the suffix D is added to the part number as shown in the table.
* Package Type 2 available, contact Pickering for more details.
Note2: Capacitance across open switch
The capacitance across the open switch was measured with other connections guarded.
Note3: Capacitance values
The value will depend upon on the mode of connection/guarding of unused terminals. Please contact technical sales for
details.
Note4: Insulation resistance
Insulation resistance will reduce at higher temperatures. For more information on temperature effects click here, or
contact Pickering for more in depth guidance.
4
pickeringrelay.com
Specification
High Voltage SIL/SIP Reed Relays – Series 104
Mercury Reed Relays
Mercury relays should be mounted vertically with pin 1 uppermost. Pin 1 is marked with a bar on the top face
of the relay.
UP
Mercury Reed: Series 104 switch ratings - contact ratings for each switch type
Switch Switch Power
No
form rating
6
A
50 W
Life
Max.
Max.
Max.
Min.
expectancy
switch carry switching stand-off
ops typical
current current
volts
volts
(see Note1)
2A
3A
500
1500
108
Operate
time inc
bounce
(max)
Release
time
Special
features
1.5 ms
1.0ms
Standard mercury
Note1: Life Expectancy
The life of a reed relay depends upon the switch load and end of life criteria. For example, for an ‘end of life’ contact
resistance specification of 1 Ω, switching low loads (10 V at 10 mA resistive) or when ‘cold’ switching, typical life is approx
1 x 109 ops. At the maximum load (resistive), typical life is 1 x 107 ops. In the event of abusive conditions, e.g. high currents
due to capacitive inrushes, this figure reduces considerably. Pickering will be pleased to perform life testing with any
particular load condition.
Mercury Relay: Series 104 Coil data and type numbers
Device Type
Type Number
1 Form A
Switch No. 6 (1.5 kV)
Package Type 1 *
2 Form A
Switch No. 6 (1.5 kV)
Package Type 4
Coil
(V)
Max.
Coil
contact
resistance resistance
(initial)
104-1-A-5/6D
5
100 Ω
104-1-A-12/6D
12
500 Ω
104-1-A-24/6D
24
1500 Ω
104-2-A-5/6D
5
50 Ω
104-2-A-12/6D
12
275 Ω
104-2-A-24/6D
24
1000 Ω
Insulation resistance
(minimum at 25 °C)
(see Note4)
Capacitance
(typical)
(see Note2)
Switch
to coil
Across
switch
Closed
switch
to coil
Across
open
switch
0.12 Ω
1012 Ω
1011 Ω
3 pF
3 pF
0.15 Ω
1012 Ω
1011 Ω
See
Note3
See
Note3
When an internal diode is required, the suffix D is added to the part number as shown in the table.
* Package Type 2 available, contact Pickering for more details.
Note2: Capacitance across open switch
The capacitance across the open switch was measured with other connections guarded.
Note3: Capacitance values
The value will depend upon on the mode of connection/guarding of unused terminals. Please contact technical sales for
details.
Note4: Insulation resistance
Insulation resistance will reduce at higher temperatures. For more information on temperature effects click here, or
contact Pickering for more in depth guidance.
The technical information shown in this data sheet could contain inaccuracies or typographical errors. This information may
be periodically changed or updated and these changes will be included in future versions of this data sheet.
For different values, latest specifications and product details, please contact your local Pickering sales office.
For FREE evaluation samples go to: pickeringrelay.com/samples
5
pickeringrelay.com
Specification
High Voltage SIL/SIP Reed Relays – Series 104
Pin Configuration, Weights and Dimensional Data (dimensions in inches, millimeters in brackets)
Package Type
Package Type
11
0.245 (6.22)
0.95 (24.1)
Weight:
Typical 2.06 g
Weight: Typical 2.06 g
1 Form A
0.32
(8.1)
+
0.02
(0.5)
1
0.125
(3.2)
Pin 1
0.2
(5.1)
Package
Type
Package Type
22
0.2
(5.1)
0.2
(5.1)
0.02
(0.5)
1 Form A
0.32
(8.1)
0.02
(0.5)
0.125
(3.2)
Package Type
0.3
(7.6)
33
0.2
(5.1)
0.02
(0.5)
0.3
(7.6)
1
3
1 Form B
(see Note)
0.49
(12.5)
0.02
(0.5)
0.125
(3.2)
0.2
(5.1)
0.2
(5.1)
0.2
(5.1)
0.02
(0.5)
7
+
1
3
5
7
Switch No. 1 (1.5 kV stand-off)
Switch No. 2 (2 kV stand-off)
0.01
(0.25)
0.245 (6.22)
1.14 (29.0)
44
5
Switch No. 1 (1.5 kV stand-off)
Switch No. 2 (2 kV stand-off)
Switch No. 6 (Mercury Wetted)
Switch No. 3 (3 kV stand-off)
Switch No. 4 (4 kV stand-off)
0.01
(0.25)
Weight:
Typical3.75
3.75g g
Weight: Typical
Package
Type
Package Type
+
0.245 (6.22)
1.14 (29.0)
Pin 1
7
0.245 (6.22)
0.95 (24.1)
Pin 1
5
Switch No. 1 (1.5 kV stand-off)
Switch No. 2 (2 kV stand-off)
Switch No. 6 (Mercury Wetted)
0.01
(0.25)
Weight:
Typical2.06
2.06g g
Weight: Typical
Package Type
3
Weight:
Typical3.70
3.70g g
Weight: Typical
2 Form A
+
0.49
(12.5)
0.02
(0.5)
0.125
(3.2)
Pin 1
0.2
(5.1)
0.2
(5.1)
0.2
(5.1)
0.2
(5.1)
0.02
(0.5)
0.2
(5.1)
0.01
(0.25)
1
2
3
4
5
6
Switch No. 1 (1.5 kV stand-off)
Switch No. 2 (2 kV stand-off)
Switch No. 6 (Mercury Wetted)
Important: Where the optional internal diode is fitted or for all Form B types, the correct coil polarity must be observed, as
shown by the + symbol on the schematics.
6
pickeringrelay.com
Specification
High Voltage SIL/SIP Reed Relays – Series 104
Similar Relays Comparison
If the Series 104 is unsuitable for your application, Pickering also manufactures three other series of reed relays with
similar characteristics, but in different package sizes.
Series Name
131-1-A
119-1-A
119-2-A
119-1-B
104-1-A
104-1-B
104-2-A
Physical Outline
Depth
Width
mm
(inches)
Height
3.7
(0.145)
3.7 (0.145)
12.5
(0.49)
15.1 (0.595)
6.6 (0.26)
6.3 (0.245)
20.1 (0.79)
6.6 (0.26)
15.1 (0.595)
24.1 (0.95)
29 (1.14)
8.9 (0.35)
8.9 (0.35)
8.2 (0.32)
12.5 (0.49)
1 & 2
2
3
4
1245
1245
2284
2284
2.06
2.06
3.75
3.7
1-B
(SPNC)
2-A
(DPST)
Package Volume
(mm3)
306
369
491
662
498
Typical Weights (g)
0.58
0.67
0.74
1.06
0.89
Contact
Configuration
1-A
(SPST)
2-A
(DPST)
1-B
(SPNC)
Reed Switch Type
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Mercury
Wetted
Stand-off Voltage (V)
1500
1500
2000
3000
1500
1500
2000
1500
2000
1-A
(SPST)
1-A
(SPST)
Dry
Dry
Dry
Dry
Dry
Mercury
Wetted
1500
3000 4000
1500
2000
1500
2000
1500
Dry
Switching Voltage (V)
1000
1000
1000
500
1000
1000
1000
500
Switching Current (A)
0.7
0.7
1
2
1
1
1
2
Carry Current (A)
1.25
1.25
1.5
3
1.5
1.5
1.5
3
Switch Power (W)
10
10
25
50
25
25
25
50
Series Name
100HV-1-A
100HV-1-B
100HV-2-A
10.2 (0.40)
10.2 (0.40)
10.2 (0.40)
24.1 (0.95)
29 (1.14)
29 (1.14)
12.7 (0.50)
15.2 (0.60)
15.2 (0.60)
4496
4496
Physical Outline
Depth
Width
Height
mm
(inches)
Package Volume
(mm3)
3122
3122
Typical Weights (g)
6.99
8.75
8.75
Contact
Configuration
1-A
(SPST)
1-B
(SPNC)
2-A
(DPST)
Reed Switch Type
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Stand-off Voltage (V)
1500
2000
3000
1500
2000
1500
2000
Switching Voltage (V)
1000
1000
1000
Switching Current (A)
1
1
1
Carry Current (A)
1.5
1.5
1.5
Switch Power (W)
25
25
25
Reed Relay Selection Tool
Because Pickering offer the largest range of high-quality reed relays, sometimes it can be difficult to find the right reed relay
you require. That is why we created the Reed Relay Selector, this tool will help you narrow down our offering to get you the
correct reed relay for your application. To try the tool today go to: pickeringrelay.com/reed-relay-selector-tool
7
pickeringrelay.com
Ordering Information
High Voltage SIL/SIP Reed Relays – Series 104
Standard Build Options
The Series 104 Reed Relays are available with a number of standard build options to tailor them to your specific application.
These options are detailed in the table below. If you decide to go ahead and specify one, or more, of these options you will
be allocated a unique part number suffix.
Mechanical Build Options
Electrical Build Options
Special pin configurations or pin lengths
Different coil resistance
Special print with customer’s own part number or logo
Different stand-off or switching voltage
Custom packaging possibility
Operate or de-operate time
Equivalents to competitors discontinued parts
Pulse capability
Enhanced specifications
Equivalents to competitors discontinued parts
Non-standard coil voltages and resistance figures
Special Life testing under customer’s specific load
conditions
Specific environmental requirements
Controlled thermal EMF possibility
Customization
If your specific requirements are not met by standard relay, or any of the standard build options, please speak to us to
discuss producing a customized reed relay to service your specific application: pickeringrelay.com/contact
3D Models
Interactive 3D models of the complete range of Pickering relay products in STEP, IGS and SLDPRT formats can be
downloaded from the website: pickeringrelay.com/3d-models
Part Number Description:
104 - 1 - A - 5 / 2 D - xxx
Series
Number of reeds
Switch form
Coil voltage
Switch number (see tables on pages 2 & 5)
Diode if fitted (omit if not required)
Unique suffix (if standard build option selected)
Help
If you need any technical advice or other help, please do not hesitate to contact our Technical Sales Department. We will
always be pleased to discuss Pickering relays with you. email: techsales@pickeringrelay.com
Contact Us
8
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UK Headquarters - email: sales@pickeringrelay.com | Tel. +44 1255 428141
USA - email: ussales@pickeringrelay.com | Tel. +1 781 897 1710
Germany - email: desales@pickeringtest.com | Tel. +49 89 125 953 160
Product
France - email: frsales@pickeringtest.com | Tel. +33 9 72 58 77 00
25+Years 100%
Tested
Longevity
Nordic - email: ndsales@pickeringtest.com | Tel. +46 340 69 06 69
Czech Republic: czsales@pickeringtest.com | Tel. +420 558-987-613
China - email: chinasales@pickeringtest.com | Tel. +86 4008 799 765
For a full list of agents, distributors and representatives visit: pickeringrelay.com/agents
pickeringrelay.com
High Voltage SIL/SIP Reed Relays – Series 104
10 Key Benefits of Pickering Reed Relays
Pickering Reed Relays
Typical Industry Reed Relays
Instrumentation Grade Reed Switches
with vacuum sputtered Ruthenium
plating to ensure stable, long life up to
5x10E9 operations.
Often low grade Reed Switches with
electroplated Rhodium plating resulting
in higher, less stable contact resistance.
22
Formerless Coil
Construction
Formerless coil construction increases
the coil winding volume, maximizing
magnetic efficiency, allowing the use of
less sensitive reed switches resulting in
optimal switching action and extended
lifetime at operational extremes.
Use of bobbins decreases the coil
winding volume, resulting in having
less magnetic drive and a need to use
more sensitive reed switches which
are inherently less stable with greatly
reduced restoring forces.
3
Magnetic Screening
Mu-metal magnetic screening (either
external or internal), enables ultra-high
PCB side-by-side packing densities with
minimal magnetic interaction, saving
significant cost and space. Pickering
Mu-Metal magnetic screen - interaction
approx. 5%
Lower cost reed relays have minimal
or no magnetic screening, resulting in
magnetic interaction issues causing
changes in operating and release
voltages, timing and contact resistance,
causing switches to not operate at their
nominal voltages. Typical industry
screen - interaction approx. 30%
4
SoftCenter™ technology, provides
maximum cushioned protection of the
reed switch, minimising internal lifetime
stresses and extending the working life
and contact stability.
Transfer moulded reed relays (produced
using high temperature/pressure),
result in significant stresses to the glass
reed switch which can cause the switch
blades to deflect or misalign leading to
changes in the operating characteristics,
contact resistance stability and operating
lifetime.
100% testing for all operating
parameters including dynamic contact
wave-shape analysis with full data
scrutiny to maintain consistency.
Simple dc testing or just batch testing
which may result in non-operational
devices being supplied.
1
Instrumentation Grade
Reed Switches
SoftCenter™
Technology
5
100% Dynamic
Testing
X-Ray of Pickering
mu-metal
magnetic screen
X-Ray of typical
industry
magnetic screen
Dynamic Contact Resistance Test
Operate
Contact Resistance
Key Benefit
Release
6
100% Inspection
at Every Stage of
Manufacturing
7
Inspection at every stage of
manufacturing maintaining high levels
of quality.
Often limited batch inspection.
Stress testing of the manufacturing
processes, from -20°C to +85°C to -20°C,
repeated 3 times.
Rarely included resulting in field failures.
+85°C
100% Thermal
Cycling
-20°C
Product Longevity
Limited ability to customize.
Pickering are committed to product
longevity; our reed relays are
manufactured and supported for
more than 25 years from introduction,
typically much longer.
Most other manufacturers discontinue
parts when they reach a low sales
threshold; costing purchasing and R&D
a great deal of unnecessary time and
money to redesign and maintain supply.
o n g v it
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Our reed relays can be customized
easily, e.g. special pin configurations,
enhanced specifications, non-standard
coil or resistance figures, special life
testing, low capacitance, and more.
L
10
Mass production: Usually large
batch sizes and with no quick-turn
manufacturing.
L
9
Custom Reed Relays
Flexible manufacturing processes allow
quick-turn manufacturing of small
batches.
y
8
Flexible
Manufacturing
Process
Product
25+Years
Longevity
For more information go to: pickeringrelay.com/10-key-benefits
9
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© Copyright (2022) Pickering Electronics. All Rights Reserved
Pickering Electronics maintains a commitment to continuous product development, consequently we reserve the right to vary from the description given in this data sheet.
Coil Voltage