LTM2 [NIDEC]
Ultra-Miniature Illuminated;
| 型号： | LTM2 |
| 厂家： | 
NIDEC COMPONENTS |
| 描述： | Ultra-Miniature Illuminated |
| 文件： | 总5页 (文件大小：572K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTR1・2 & LTM1・2
Ultra-Miniature Illuminated
Pushbutton Switches
RoHS Compliant
■Speciꢀcations
Rating
■Series
LTR ：10mA 12VDC max. 10μA Min.
Conductive Rubber Contact（LTR type）
Mettal Contact（LTM type）
LTM：1VA max.（50mA max.48VDC max） 0.5mA min.
LTMG：1VA Max（. 50mA max.48VDC max.） 10μA min.
LTR：500Ω max.（1mA 2VDC at 1.47N｛150gf｝）
■Features
Initial Contact
1. Full Surface Illumination (LTM2, LTMG2, LTR2 Series
Miniature, low-cost switch with full surface illumination by
LED. Buttons available in square shape (7.5/10mm sq.)
and round shape (7.5/10mm dia.) in 3 colors (Red, Green,
Yellow). Non-illuminated switches also available (LTM1,
LTMG1, LTR1 series).
LTM：100mΩ max
Resistance
（1.5mA 200μVAC at 1.96N｛200gf｝）
Dielectric Strength 250VAC 1 minute
100MΩ minꢀꢀꢀꢀꢀꢀꢀꢀꢀ（100VDC）
Insulation Resistance
LTR ：100,000 operations
LTM：300,000 operations
LTR ：3 msec. max.（Initial value）
LTM：10 msec. max.（Initial value）
LTR ：1 mm
Electrical Life
2. Two Types of Contacts
Contact Bounce
Travel
LTR series: Conductive rubber contact for soft tactile feel.
LTM/LTMG series: Metal contact for sharp tactile feel.
3. PC Board Mount
LTM：0.25 mm
Terminal pitch is in inches (multiples of 2.54 mm) for all
models. The unique terminal shape prevents the terminals
from coming loose from the PC board during dip soldering.
LTR ：0.98±0.39N
Operating Force
（at peak force）
Operating
LTM：1.37±0.39N
－25～＋70℃
Temperature Range
4. Enhanced Resistance to Soldering Heat
Improved terminal structure protects the contacts from
soldering heat. In addition, each pole has two terminals
which can be used as a jumper wire.
Storage
Temperature Range
－40～＋70℃
5. Compatible With Lead-Free Soldering (LTM Series)
Heat-resistance resin for lead-free soldering.
LTR・LTM
■Part Numbering
LT M G 2
■Operating Force vs. Stroke Characteristics
̶
01
̶
L2
Series Code
Contact Plating
LED luminance
Type of Contact
Structure
LED Color
■Type of Contacts and Contact Plating
Code
Type of Contact
Conductive rubber contact
Metal contact
Contact Plating
R
Gold plated
Silver plated
Gold plated
Fig.A
M
■PC Hole Layouts
MG
Metal contact
Type
LTR1/LTM1
LTR2/LTM2
Note : The contacts of LTR series are all gold-plated.
■Structure
Fig.
1
2
Dimensions
（Top view）
Structure
Without LED
With LED
（Non-illuminated）
■LED liminance
Symbol
01
LED luminance
■LED Speciꢀcations
ꢀLTR2・LTM2・LTMG2
（Normal luminance )
（High luminance )
Forward V (V
F
)
Reverse
Forward
Code Color
Luminance
Voltage (V
R)
31
Current (I
F
)
nom.
max.
L2
L5
L6
L8
L2
L5
L8
Red
Green
Bule
30mA
25mA
30mA
30mA
2.0V
2.2V
3.8V
2.1V
2.5V
2.5V
4.5V
2.5V
2.5V
4.0V
2.5V
DC5V
DC5V
DC5V
DC5V
DC5V
DC5V
DC5V
■Packaging Speciꢀcations
Normal
Zipper Plastic Bag
Yellow
Red
30mA 1.95V
Green
Yellow
High
30mA
30mA
3.2V
2.0V
■Table of Part Numbers
Series
LTM
LTR
Gold Plated
Contact plating
Silver Plated
Gold Plated
Non-illuminated
ꢀLTM1－01
－
ꢀLTMG1－01
ꢀLTR1－01
－
Red
Green
Bule
Yellow
ꢀLTM2－01－L2
ꢀLTM2－01－L5
★LTM2－01－L6
ꢀLTM2－01－L8
ꢀLTM2－31－L2
ꢀLTM2－31－L5
－
★LTMG2－01－L2 ꢀLTR2－01－L2
★LTMG2－01－L5 ꢀLTR2－01－L5
ꢀLTR2－31－L2
ꢀLTR2－31－L5
－
LED color
LTMG2－01－L6 ★LTR2－01－L6
▲
ꢀLTM2－31－L8
★LTMG2－01－L8 ꢀLTR2－01－L8
ꢀLTR2－31－L8
：Inquiry products.
▲
★：Made to order products.
LTR（ Conductive Rubber Contact）
SPST
LTR1
Without LED（Non-illuminated）
Switching function Circuit diagrams
Part No.
LTR1 01
□6
2.5
6.5±0.3
0.4
3.5±0.3
0.5
STROKE（1）
0.65
-
OFF （ON）
（4）
（3）
（2）
（1）
Connecting terminals
̶
Terminal numbers are not shown on the switch.
SPST
LTR2
With LED
□6
0.7
6.5±0.3
0.4
2.5
7±3
3.5±0.3
STROKE（1）
0.65
0.5
（6）
（4）
（3）
（2）
（1）
（5）
0.5
Terminal numbers are not shown on the switch.
LTM（Metal Contact）
SPST
LTM1
Without LED（Non-illuminated）
Switching function Circuit diagrams
□6
6.5±0.3
0.4
2.5
Part No.
3.5±0.3
STROKE（0.25）
0.5
0.65
（4）
（3）
（2）
（1）
LTM1－01
OFF （ON）
LTMG1－01
Connecting terminals
̶
Terminal numbers are not shown on the switch.
SPST
LTM2
With LED
Switching function Circuit diagrams
Part No.
□6
0.7
6.5±0.3
0.4
7±3
2.5
3.5±0.3
STROKE（0.25）
0.65
0.5
（6）
LTM2－01－L■
LTMG2－01－L■
LTM2－31－L■
（4）
（3）
（2）
OFF （ON）
Connecting
terminals
（1）
（5）
̶
0.5
LED circuit
Terminal numbers are not shown on the switch.
（ON）：Momentary
LED color to be speciꢀed in ■.
■ ：Refer to "Table of Part Numbers" on P.171.
LTR・LTM
■Flux Cleaning
⑴Solvents : Fluorine or Alcohl type
■Soldering
Series
LTM
LTR
⑵LTM and LTR series are not washable. To wash the PC board,
clean the soldering surface of the PC board with a brush so
that the switch is not exposed to the cleaning solution.
⑶After soldering, wait until the temperature of the terminals
cool down to 90℃ or below or until the parts are exposed
to room temperature for more than 5 min. before washing.
380℃ Max.
380℃ Max.
Manual soldering
Auto soldering
3sec. Max.
3sec. Max.
275℃ Max.
265℃ Max.
6sec. Max.
6sec. Max.
Preheating in the ꢁow line should be 80~120℃ , 120 sec. max.
Do not dip solder the switches with color buttons or
mounting frames attached. Soldering heat may deform
the accessories or cause ingress of ꢁux.
Dimensions of Assembled Switch
■
■Ambient Conditions
⑴In case of switches with silver-plated contacts, do not use in
an environment where there is corrosive gas such as sulfuric or
ammonia gas which may aꢂect the silver plating.
⑵LTM and LTR series are open-structure switches and should not
be used in a dusty environment.
Button
size A
□10
size B
□12.5
□10用
10mm sq.
10mm sq. 12.5mm sq.
φ10用
φ10
φ12.5
10mm dia. 10mm dia. 12.5mm dia.
Ｂ
Ａ
□7.5用
□7.5
□10
7.5mm sq. 7.5mm sq. 10mm sq.
φ7.5用
φ7.5
φ10
7.5mm dia. 7.5mm dia. 10mm dia.
■Precautions
Current to be applied to the
LED must be lower than the
forward current (IF) indicated
in the LED Specifications
Example : E=5V,
I =10mA
F
EV
F
R=
R=
300Ω
LED circuit
IF
of each switches. Resistance
value R should be calculated
using the formula on the right.
Use VF=2.0V to calculate.
Accessories
mounting
Installing the Button
ling the Mounting Frame
Install the button so that the protrusions on the switch fit into
the square holes on the button.
all the mounting frame
hat the tab on the frame
n the same direction as
slot on the switch.
The mounting frame cannot be installed with the switch
button installed.
LTR・LTM
■Optional Accessories
Part Name
《Sold separately》
Color Button
Dimensions
（ABS）
Dark gray
Gray
140007480168
140007480169
140007480170
140007480171
140007480172
140007480174
140007480173
140007480422
140007480205
140007480206
140007480207
140007480554
140007480551
140007480552
140007480553
140007480178
140007480188
140007480189
140007480190
140007480191
140007480192
140007480194
140007480193
140007480505
140007480211
140007480212
140007480213
140007480562
140007480559
140007480560
140007480561
140007480198
140007480179
140007480180
140007480181
140007480182
140007480184
140007480183
140007480451
140007480208
140007480209
140007480210
140007480558
140007480555
140007480556
140007480557
140007480199
140007480200
140007480201
140007480202
140007480204
140007480203
140007480506
140007480214
140007480215
140007480216
140007480566
140007480563
140007480564
140007480565
Light gray
Ivory
Red
Green
Blue
Clear
Red clear
Green clear
Yellow clear
Clear
Red clear
Green clear
Yellow clear
Part Name
Mounting Frame
Dimensions
（ABS）
Dark gray
Gray
140000340170
140000340179
140000340180
140000340181
140000340171
140000340182
140000340183
140000340184
140000340168
140000340173
140000340174
140000340175
140000340169
140000340176
140000340177
140000340178
Light gray
Ivory
Mounting frame is common to both illuminated
and non-illuminated switches.
Part Name
Dimensions
Color Button
（ABS）
LED luminance
Normal luminance
High luminance
Normal luminance
High luminance
②
Screen color
Clear
Clear
①Color
Dark gray
Gray
140007480452
140007480453
140007480454
140007480455
140007480456
140007480457
140007480458
140007480567
140007480568
140007480569
140007480570
140007480571
140007480572
140007480573
140007480459
140007480460
140007480461
140007480462
140007480463
140007480464
140007480465
140007480574
140007480575
140007480576
140007480577
140007480578
140007480579
140007480580
Light gray
Ivory
Red
Green
Blue
：Optional Accessories
相关型号：
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