1
D2HW Sealed Ultra Subminiature Basic Switch
Smallest sealed snap-action switch in
the industry with a very long stroke for
reliable ON/OFF action.
■The case dimensions are 78% of conventional
models, contributing to down-sizing of mechanical
modules.
■Extra-long stroke even without levers.
(OT: 1.4 mm)
■Made of environment-friendly materials. All mod-
els are lead-free, including molded lead wire mod-
els.
Ordering Information
■ Model Number Legend:
1. Mounting Structure
A: Without posts (base-mounting)
BR: Posts on right
BL: Posts on left
C: M3-screw mounting
2. Ratings
2: 1 mA at 5 VDC to 2 A at 12 VDC
3. Actuator
0: Pin plunger
1: Hinge lever
2: Long hinge lever
3: Simulated roller hinge lever
4: Hinge roller lever
6: Leaf lever
7: Simulated roller leaf lever
8: Long leaf lever
4. Contact Form
1: SPDT
2: SPST-NC (Molded lead wire models only.)
3: SPST-NO (Molded lead wire models only.)
5. Terminals
D: Straight PCB terminals
DR: Right-angled PCB terminals
DL: Left-angled PCB terminals
H: Solder terminals
M: Molded lead wires downwards
MR: Molded lead wires on right-side
ML: Molded lead wires on left-side
Note Add “S” to the end of the model number for the UL/CSA-
approved version.
RoHS Compliant
D2HW-@@@@@
1 2 3 4 5
2
D2HWD2HW
■ List of Models
PCB-mounted Models
Note Add “S” to the end of the model number for the UL/CSA-approved version. Consult your OMRON sales representative for details.
Models with Solder Terminals or Molded Lead Wires
Note: 1. The length of standard lead wires (AVSS0.5) for molded lead wire models is 30 cm.
2. Add “S” to the end of the model number for the UL/CSA-approved version. Consult your OMRON sales representative for details.
Actuator Terminals Contact form Model
For PCB Straight SPDT --- --- D2HW-A201D
Angled D2HW-BR201DR D2HW-BL201DL ---
Straight --- --- D2HW-A211D
Angled D2HW-BR211DR D2HW–BL211DL ---
Straight --- --- D2HW-A221D
Angled D2HW-BR221DR D2HW-BL221DL ---
Straight --- --- D2HW-A231D
Angled D2HW-BR231DR D2HW-BL231DL ---
Actuator Terminals Contact form Model
Solder SPDT D2HW-BR201H D2HW-BL201H D2HW-C201H
Molded lead
wires
Downwards SPDT D2HW-BR201M D2HW-BL201M D2HW-C201M
SPST-NC D2HW-BR202M D2HW-BL202M D2HW-C202M
SPST-NO D2HW-BR203M D2HW-BL203M D2HW-C203M
Right-side SPST-NC D2HW-BR202MR D2HW-BL202MR D2HW-C202MR
SPST-NO D2HW-BR203MR D2HW-BL203MR D2HW-C203MR
Left-side SPST-NC D2HW-BR202ML D2HW-BL202ML ---
SPST-NO D2HW-BR203ML D2HW-BL203ML ---
Solder SPDT D2HW-BR211H D2HW-BL211H D2HW-C211H
Molded lead
wires
Downwards SPDT D2HW-BR211M D2HW-BL211M D2HW-C211M
SPST-NC D2HW-BR212M D2HW-BL212M D2HW-C212M
SPST-NO D2HW-BR213M D2HW-BL213M D2HW-C213M
Right-side SPST-NC D2HW-BR212MR D2HW-BL212MR D2HW-C212MR
SPST-NO D2HW-BR213MR D2HW-BL213MR D2HW-C213MR
Left-side SPST-NC D2HW-BR212ML D2HW-BL212ML ---
SPST-NO D2HW-BR213ML D2HW-BL213ML ---
Solder SPDT D2HW-BR221H D2HW-BL221H D2HW-C221H
Molded lead
wires
Downwards SPDT D2HW-BR221M D2HW-BL221M D2HW-C221M
SPST-NC D2HW-BR222M D2HW-BL222M D2HW-C222M
SPST-NO D2HW-BR223M D2HW-BL223M D2HW-C223M
Right-side SPST-NC D2HW-BR222MR D2HW-BL222MR D2HW-C222MR
SPST-NO D2HW-BR223MR D2HW-BL223MR D2HW-C223MR
Left-side SPST-NC D2HW-BR222ML D2HW-BL222ML ---
SPST-NO D2HW-BR223ML D2HW-BL223ML ---
With posts on right With posts on left Without posts
Pin plunger
Hinge lever
Long hinge
lever
Simulated roller
hinge lever
With posts on
right With posts on
left M3-screw
mounting
Pin plunger
Hinge lever
Long hinge
lever
3
D2HWD2HW
Note: 1. The length of standard lead wires (AVSS 0.5) for molded lead wire models is 30 cm.
2. Add “S” to the end of the model number for the UL/CSA-approved version. Consult your OMRON sales representative for details.
Specifications
■ Ratings Note The ratings values apply under the following test condi-
tions:
Ambient temperature: 20±2°C
Ambient humidity: 65±5%
Operating frequency: 30 operations/min
Actuator Terminals Contact form Model
Solder SPDT D2HW-BR231H D2HW-BL231H D2HW-C231H
Molded lead
wires
Downwards SPDT D2HW-BR231M D2HW-BL231M D2HW-C231M
SPST-NC D2HW-BR232M D2HW-BL232M D2HW-C232M
SPST-NO D2HW-BR233M D2HW-BL233M D2HW-C233M
Right-side SPST-NC D2HW-BR232MR D2HW-BL232MR D2HW-C232MR
SPST-NO D2HW-BR233MR D2HW-BL233MR D2HW-C233MR
Left-side SPST-NC D2HW-BR232ML D2HW-BL232ML ---
SPST-NO D2HW-BR233ML D2HW-BL233ML ---
Solder SPDT D2HW-BR241H D2HW-BL241H D2HW-C241H
Molded lead
wires
Downwards SPDT D2HW-BR241M D2HW-BL241M D2HW-C241M
SPST-NC D2HW-BR242M D2HW-BL242M D2HW-C242M
SPST-NO D2HW-BR243M D2HW-BL243M D2HW-C243M
Right-side SPST-NC D2HW-BR242MR D2HW-BL242MR D2HW-C242MR
SPST-NO D2HW-BR243MR D2HW-BL243MR D2HW-C243MR
Left-side SPST-NC D2HW-BR242ML D2HW-BL242ML ---
SPST-NO D2HW-BR243ML D2HW-BL243ML ---
Solder SPDT D2HW-BR261H D2HW-BL261H D2HW-C261H
Molded lead
wires
Downwards SPDT D2HW-BR261M D2HW-BL261M D2HW-C261M
SPST-NC D2HW-BR262M D2HW-BL262M D2HW-C262M
SPST-NO D2HW-BR263M D2HW-BL263M D2HW-C263M
Right-side SPST-NC D2HW-BR262MR D2HW-BL262MR D2HW-C262MR
SPST-NO D2HW-BR263MR D2HW-BL263MR D2HW-C263MR
Left-side SPST-NC D2HW-BR262ML D2HW-BL262ML ---
SPST-NO D2HW-BR263ML D2HW-BL263ML ---
Solder SPDT D2HW-BR271H D2HW-BL271H D2HW-C271H
Molded lead
wires
Downwards SPDT D2HW-BR271M D2HW-BL271M D2HW-C271M
SPST-NC D2HW-BR272M D2HW-BL272M D2HW-C272M
SPST-NO D2HW-BR273M D2HW-BL273M D2HW-C273M
Right-side SPST-NC D2HW-BR272MR D2HW-BL272MR D2HW-C272MR
SPST-NO D2HW-BR273MR D2HW-BL273MR D2HW-C273MR
Left-side SPST-NC D2HW-BR272ML D2HW-BL272ML ---
SPST-NO D2HW-BR273ML D2HW-BL273ML ---
Molded lead
wires
Downwards SPDT D2HW-BR281M D2HW-BL281M D2HW-C281M
SPST-NC D2HW-BR282M D2HW-BL282M D2HW-C282M
SPST-NO D2HW-BR283M D2HW-BL283M D2HW-C283M
Right–side SPST-NC --- --- D2HW-C282MR
SPST-NO --- --- D2HW-C283MR
With posts on
right With posts on
left M3-screw
mounting
Simulated roller
hinge lever
Hinge roller
lever
Leaf lever
Simulated roller
leaf lever
Long leaf lever
Rated voltage (V) Resistive load
125 VAC 0.1 A
12 VDC
24 VDC
42 VDC
2 A
1 A
0.5 A
4
D2HWD2HW
■Characteristics
Note: 1. The data given above are initial values.
2. For the pin plunger models, the above values apply for use at the free position, operating position, and total travel position. For
the lever models, they apply at the total travel position.
The values shown apply for malfunctions of 1 ms max.
3. For testing conditions, consult your OMRON sales representative.
■Approved Standards
Consult your OMRON sales representative for specific models
with standard approvals.
UL1054 (File No. E41515)/CSA C22.2 No. 55 (UL
approval)
■Contact Specifications
Note: Minimum applicable loads are indicated by N standard ref-
erence values. This value represents the failure rate at a
60% (λ60) reliability level.
The equation λ60=035×10−6/operations indicates that a
failure rate of 1/2,000,000 operations can be expected at
a reliability level of 60%.
■Contact Form
Note Molded lead wire colors are indicated in parentheses.
Item Specification
Operating speed 1 mm to 500 mm/s (for pin plunger models)
Operating frequency 30 operations/min max.
Insulation resistance 100 MΩ min. (at 500 VDC)
Contact resistance
(initial value) 100 mΩ max. (molded lead wire models: 150 mΩ max.)
Dielectric strength 600 VAC, 50/60 Hz for 1 min between terminals of the same polarity
1,500 VAC, 50/60 Hz for 1 min between current-carrying metal parts and ground, and between
each terminal and non-current-carrying metal parts
Vibration resistance (see note 2) Malfunction: 10 to 55 Hz, 1.5-mm double amplitude
Shock resistance (see note 2) Destruction: 1,000 m/s2 {approx. 100 G} max.
Malfunction: 300 m/s2 {approx. 30 G} max.
Durability (see note 3) Mechanical: 1,000,000 operations min. (30 operations/min)
Electrical: 100,000 operations min. (20 operations/min)
Degree of protection IEC IP67 (excluding the terminals on terminal models)
Degree of protection against electric
shock Class I
Proof tracking index (PTI) 175
Ambient operating temperature –40 to 85°C (at ambient humidity of 60% max.) (with no icing or condensation)
Ambient operating humidity 95% max. (for 5 to 35°C)
Weight Approx. 0.7 g (for pin plunger models with terminals)
Rated voltage D2HW
125 VAC 0.1 A
12 VDC 2 A
Item Specification
Contact Specification Crossbar
Material Gold alloy
Gap (standard value) 0.5 mm
Minimum applicable load
(see note) 1 mA at 5 VDC
SPDT SPST-NC
(Molded Lead Wire Models Only)
SPST-NO
(Molded Lead Wire Models Only)
COM
(Black)
NO
(Blue)
NC
(Red)
COM
(Black)
NO
(Blue)
COM
(Black)
NC
(Red)
5
D2HWD2HW
Dimensions
■Mounting Structure and Reference Positions for Operating Characteristics
Note All units are in millimeters unless otherwise indicated.
The reference positions used for FP, OP, and TTP values are as shown below for each type of mounting.
■Terminals
D2HW-A@
Models without Posts D2HW-B@
Models with Posts D2HW-C@
M3-screw Mounting Models
Reference
position
Reference
position
Mounting Hole Dimensions (Reference) Mounting Hole Dimensions (Reference)
1.7 dia.
1.7 dia.
Reference
position
M3 tap
2.6
3.3±0.15 dia.
2.4 dia. hole
(depth: 5 mm min.)
+0.1
0
3 dia. hole
(depth: 1.5 mm min.)
+0.1
0
3 dia.
0
−0.1
Straight PCB Terminals Angled PCB Terminals Solder Terminals
Molded Lead Wires Downwards
Molded Lead Wires on Right-sideMolded Lead Wires on Left-side
PCB Cutout Dimensions (Reference) PCB Cutout Dimensions (Reference)
Three-0.6 Three-0.6 Three-2
COM AVSS 0.5
(Black)
NO AVSS 0.5 (Blue)
NC AVSS 0.5 (Red)
Three, 1 dia. hole
+0.1
0
Three, 1 dia. hole
+0.1
0
2.4 dia. hole
(depth: 5 mm min.)
+0.1
0
2.6
3.5
(3.1)
(12) (12)
(12)
(13.3)
(13.3)
6
D2HWD2HW
■Dimensions and Operating Characteristics
Note: 1. All units are in millimeters unless otherwise indicated.
2. Dimensions not indicated in the above diagrams have a tolerance of ±0.2 mm.
3. The operating characteristics are for operation in the A direction ( ).
➡
Pin Plunger Models
D2HW-@20@@
Model Models without
posts Models with posts
and M3-mounting
models
OF max.
RF min.
0.75 N {76 gf}
0.10 N {10 gf}
OT ref.
MD max.
1.4 mm (reference value)
0.25 mm
FP max.
OP
TTP max.
11.2 mm
10.4±0.2 mm
9.1 mm
7.2 mm
6.4±0.2 mm
5.1 mm
1.7 dia.
A
Hinge Lever Models
D2HW-@21@@
Model Models without
posts Models with posts
and M3-mounting
models
OF max.
RF min.
0.75 N {76 gf}
0.07 N {7 gf}
OT ref.
MD max.
1.6 mm (reference value)
0.5 mm
FP max.
OP
TTP max.
12.8 mm
11.5±0.5 mm
10 mm
8.8 mm
7.5±0.5 mm
6 mm
t = 0.3 stainless
steel lever
A
Long Hinge Lever Models
D2HW-@22@@
Model Models without
posts Models with posts
and M3-mounting
models
OF max.
RF min.
0.5 N {50 gf}
0.03 N {3 gf}
OT ref.
MD max.
2.5 mm (reference value)
0.8 mm
FP max.
OP
TTP max.
15.5 mm
13.3±0.8 mm
11 mm
11.5 mm
9.3±0.8 mm
7 mm
t = 0.3 stainless
steel lever
A
Simulated Roller Hinge Lever Models
D2HW-@23@@
Model Models without
posts Models with posts
and M3-mounting
models
OF max.
RF min.
0.65 N {66 gf}
0.05 N {5 gf}
OT ref.
MD max.
1.9 mm (reference value)
0.5 mm
FP max.
OP
TTP max.
16.5 mm
15.2±0.5 mm
13.5 mm
12.5 mm
11.2±0.5 mm
9.5 mm
t = 0.3 stainless
steel lever
15
A
7
D2HWD2HW
Hinge Roller Lever Models
D2HW-@24@@
Model Models with posts and
M3-mounting models
OF max.
RF min.
0.65 N {66 gf}
0.03 N {3 gf}
OT ref.
MD max.
1.9 mm (reference value)
0.6 mm
FP max.
OP
TTP max.
15.3 mm
14±0.6 mm
12.3 mm
8±0.1
TTP
FP OP
4.8 dia. ×2.8
resin roller (4.6)
A
(0.4)
(1.15)
3
6.5
15
t=0.3 stainless
steel lever
Leaf Lever Models
D2HW-@26@@
Model Models with posts and
M3-mounting models
OF max.
RF min.
1.8 N {183 gf}
0.20 N {20 gf}
OT ref.
MD max.
1.8 mm (reference value)
0.5 mm
FP max.
OP
TTP max.
9.3 mm
7.4±0.5 mm
5.8 mm
t = 0.3 stainless
steel lever
A
Simulated Roller Leaf Lever Models
D2HW-@27@@
Model Models with posts and
M3-mounting models
OF max.
RF min.
1.8 N {183 gf}
0.20 N {20 gf}
OT ref.
MD max.
2.0 mm (reference value)
0.5 mm
FP max.
OP
TTP max.
13 mm
10.8±0.5 mm
8.9 mm
t = 0.3 stainless
steel lever
A
Long Leaf Lever Models
D2HW-@28@@
Model Models with posts and
M3-mounting models
OF max.
RF min.
0.9 N {92 gf}
0.05 N {5 gf}
OT ref.
MD max.
2.8 mm (reference value)
0.7 mm
FP max.
OP
TTP max.
19 mm
15.4±1.5 mm
12.8 mm
t = 0.2 stainless
steel lever
3.3±0.15 dia.
3 dia.
0
-0.1
COM AVSS 0.5
(Black)
NO AVSS 0.5 (Blue)
NC AVSS 0.5 (Red)
(13.3)
(12)
A
20.85±1
8
D2HWD2HW
Precautions
Refer to General Information.
■Cautions
Degree of Protection
Do not use this product in water. Although molded lead wire mod-
els satisfy the test conditions for the standard given below, this
test is to check the ingress of water into the switch enclosure after
submerging the Switch in water for a given time. Satisfying this
test condition does not mean that the Switch can be used in
water.
IEC Publication 529, degree of protection IP67.
Do not operate the Switch when it is exposed to water spray, or
when water drops adhere to the Switch surface, or during sudden
temperature changes, otherwise water may intrude into the inte-
rior of the Switch due to a suction effect.
Prevent the Switch from coming into contact with oil and chemi-
cals. Otherwise, damage to or deterioration of Switch materials
may result.
Do not use the Switch in areas where it is exposed to silicon
adhesives, oil, or grease, otherwise faulty contact may result due
to the generation of silicon oxide.
Terminal Connection
When soldering the lead wire to the terminal, first insert the lead
wire conductor through the terminal hole and then conduct sol-
dering.
The rough standard for soldering work is as follows:
Capacity of soldering iron: 50 W Max (300 °C at the iron tip)
Soldering time: 3 seconds max.
Not applying any external force for 1 minute after soldering.
Applying only the minimum required amount of flux. It can cause
a contact failure if flux enters the switch.
Improper soldering involving an excessively high temperature or
excessive soldering time may deteriorate the characteristics of
the Switch.
In case of automatic soldering, please do not apply the heat
beyond 260 °C within 5 seconds.
Pay careful attention so that flux or solder liquid does not exceed
the PCB panel.
Side-actuated (Cam/Dog) Operation
When using a cam or dog to operate the Switch, factors such as
the operating speed, operating frequency, push-button indenta-
tion, and material and shape of the cam or dog will affect the
durability of the Switch. Confirm performance specifications under
actual operation conditions before using the Switch in applica-
tions.
■Correct Use
Mounting
Turn OFF the power supply before mounting or removing the
Switch, wiring, or performing maintenance or inspection. Failure
to do so may result in electric shock or burning.
For M3-screw mounting models, use M3 mounting screws with
plane washers or spring washers to securely mount the Switch.
Tighten the screws to a torque of 0.27 to 0.29 N·m. Exceeding the
specified torque may result in deterioration of the sealing or dam-
age.
For models with posts, secure the posts by thermal caulking or by
pressing into an attached device. When pressed into an attached
device, provide guides on the opposite ends of the posts to
ensure that they do not fall out or rattle.
Mount the Switch onto a flat surface. Mounting on an uneven sur-
face may cause deformation of the Switch, resulting in faulty oper-
ation or damage.
Operating Body
Use an operating body with low frictional resistance and of a
shape that will not interfere with the sealing rubber, otherwise the
plunger may be damaged or the sealing may deteriorate.
Handling
Do not handle the Switch in a way that may cause damage to the
sealing rubber.
When handling the Switch, ensure that pressure is not applied to
the posts in the directions shown in the following diagram. Also,
ensure that uneven pressure or pressure in a direction other than
the operating direction is not applied to the Actuator as shown in
the following diagram. Otherwise, the post, Actuator, or Switch
may be damaged, or the service life may be reduced.
Wiring Molded Lead Wire Models
When wiring molded lead wire models, ensure that there is no
weight on the wire or that there are no sharp bends near the parts
where the wire is drawn out. Otherwise, damage to the Switch or
deterioration in the sealing may result.
Using Micro Loads
Even when using micro load models within the operating range,
inrush currents or surges may decrease the life expectancy of the
Switch. Therefore, insert a contact protection circuit where neces-
sary.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. B105-E1-05
