Membrane Switch Technique

Item

Description

Technical capabilities

1

Max. Size:

1100mm x 2000mm

2

Overlay Material:

PET: Autotype (Autotex F150F200F280, V150V200V280,

Autoflex EBG130, EBG180, EBG250,EBA130, EBA180, EBA250)

Autotex : XEV150, XEF200;

Autostat CT3CT4CT5CT7

DuPont, Toray PET etc.

Domestic Brand PET (Sichuan Dongfang)

PC: GE LEXAN--8010 8B35 8B35F HP92S HP40  FR700 FR60

Bayer PC—Makrofol, /Bayfol, Marnot/ProTek

Domestic Brand PC etc.

3

Spacer:

3M Adhesive, NITTO TESA SONYSEKISUI Domestic Adhesive

4

Back Adhesive:

3M(Mainly), Others(Little)

5

Silver Paste:

CHANGSUNG: CSP-3163, CSP-3352CSP-5150

ACHESONED 725A(6S-61)ED 427SSED 479SSED 976SS HV

FUJIKURA and OTTI

6

Oil Ink:

SEIKO, JUJO, DUBUIT, PROELL, NORCOTE UV

7

Carbon Paste:

FUJIKURA, ACHESON ED 581SS, OTTI

8

Typical 6 Layers Metaldome Type

Membrane Switch Structure

Overlay + Spacer + Dome Retainer + Spacer + Circuit Layer+ Back adhesive

9

Typical 4 Layers Polydome Type

Membrane Switch Structure

Overlay + Spacer + Circuit + Back adhesive

10

Contact Resistance

0.5-10Ω

11

Insulation Resistance

≥10MΩ (100VDC)

12

Base Material Voltage Durable

2000V DC

13

Bounce Time

≤5ms3ym广州亿通

14

Working Current

≤100mA

15

Working Voltage

≤50VDC

16

Life

≥1,000,000 times

17

Key Travel

Flat type: 0.05mm-0.5mm, Tactile Type: 0.1-1.5mm

18

Working Temperature

-40-+80

19

Actuation Force

20-550g

20

Storage Condition

Temperature: 40℃~+85 ,Humidity: ≤98% RH

21

PET Circuit Tail Flexible Feature

180°to any angle

Rubber Keypad Technology

(1) Standard Properties for Various Applications:

Application

Phone

TV&VTR

Electronic            Calculator

Car Stereo

Electronics

Type Writer

Stroke

1.5-3.5

0.1-1.5

0.3-0.6

1.5-2.0

0.3-0.6

3-4

Actuation Force

120-200g

30-100g

60-90g

60-100g

60-90g

70-90g

Life (x106)

100-200

100-150

50-80

50-60

10

1000-1500

2. Typical Keyboard Specifications: 

Characteristics

Conductor

Insulator

Material

Carbon Pill

Silicone

Durometer (Shore A)

65±5

30-80 +/-

Tensile Strength (kg/cm2)

≥60

≥70

Tear Strength (kg/cm)

>9

>12

Compression Set (%) after 22hrs at 175

<30

<35

After 22 hrs at 175 Specific Gravity at 25

1.18

1.11-1.18

Volume Resistivity(Ohm/CM)

2-10

1x1015

Contact Resistance

≤200ohm at 12V D

Insulations Resistance

≥100Mohm at250V DC

Max Contact Loading

24V dc 100mA

Operation Temperature

-40 to +150

Storage Temperature

-50 to +180

Surface Finishing

Print silicone oil, inferior silicone oil, PU oil,                       drop glue, plastic joint, laser, PC joint

Characteristics

Conductor

Insulator

Material

Carbon Pill

Silicone

Durometer (Shore A)

65±5

30-80 +/-

Tensile Strength (kg/cm2)

≥60

≥70

Tear Strength (kg/cm)

>9

>12

Compression Set (%) after 22hrs at 175

<30

<35

After 22 hrs at 175 Specific Gravity at 25

1.18

1.11-1.18

Volume Resistivity(Ohm/CM)

2-10

1x1015

Contact Resistance

≤200ohm at 12V D

Insulations Resistance

≥100Mohm at250V DC

Max Contact Loading

24V dc 100mA

Operation Temperature

-40 to +150

Storage Temperature

-50 to +180

Surface Finishing

Print silicone oil, inferior silicone oil, PU oil,                       drop glue, plastic joint, laser, PC joint

  • PCBA capability:
    • VIT is an electronic manufacturing service provider which can offer a proprietary end-to-end manufacturing solution. VIT is a tailored provider for your PCBA and turn-key project
    • Our services include design, components sourcing, samples making, prototype making, mass production and logistics, combined with the benefits of low-cost human resource and skillful technique
  • Our capabilities included:
    • IPC 610 E class II standards
    • ISO9001 certificated PCB assembly PCBA factory in Dongguan China
    • PCB design(design PCB drawings, like Gerber file and others)
    • Total project design suggestion
    • Components sourcing and assembly
    • Plastic injection and assembly
    • Stamping and metal parts sourcing and assembly
    • Wiring harness sourcing and assembly
    • Final assembly and testing
    • Product design improvement suggestion
    • Surface mount line (SMT (placement to 0201)
    • BGA (Up to 508 x 457mm)
    • Through hole (manual and automated)
    • Burn-in capabilities, thermal and life cycle
    • RoHS meeting and lead free production
  • The range of our assembly service:
    • Medical devices & equipment
    • Aviation industry
    • Industrial control equipment
    • Consumer electronics
    • Vehicles industry
    • Telecommunication
    • Testing meters & instruments
    • Teaching electronics
    • Other industries
  • For quotation, we need:
    • Gerber file for PCB (VIT also can provide the design service, if need VIT do the design, customer need provide the circuit diagram)
    • Detail BOM list
    • Testing method (if necessary)
    • Quantity to quote
    • Provide a real sample if no drawing and BOM list