1903646-1 [MACOM]
Spring Fingers; 春天的手指
| 型号： | 1903646-1 |
| 厂家： | 
Tyco Electronics |
| 描述： | Spring Fingers |
| 文件： | 总6页 (文件大小：4643K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Quick Reference Guide
Spring Fingers
Spring fingers (also known as shield fingers, grounding springs or universal ground contacts) are used in
almost every small printed circuit board application. A spring finger is a single contact, surface mountable,
internal connector. It provides an electrical connection and grounding from EMI noise and static between
a PCB and other electronic components, such as a secondary PCB, shield cam, antenna, or speaker. TE
Connectivity oꢀers a wide selection of spring fingers in varying styles and sizes depending on the type of
application.
FEATURES
BENEFITS
APPLICATIONS
• Used for grounding between
device and PCB
• Prevents EMI noise and static
• Provides a highly reliable
connection
• Provides an easy and
inexpensive method for
connecting multiple PCBs
• Allows for versatility in
design of the PCB
• Cell phones, smart phones
• MP3 players
• Digital cameras, camcorders
• GPS units
• eReaders
• Tablets
• PCs and laptops
• Home electronic devices
• Automotive
• Provides shielding from
vibration from motors, anten-
nas, speakers and microphones
• Used as a connection for
stacking applications between
primary and secondary PCBs
• Available in eꢀective heights of
0.5mm - 3.4mm
• Can be designed in at the last
minute
• Industrial equipment
• Requires limited space on a
PCB
• No expensive specialized
equipment needed
• Accommodates soldering and
pick-and-place using standard
equipment
te.com/products/Spring-Fingers
TE Connectivity
Spring Fingers
Applications
Mobile Devices
Digital cameras and videos
Handheld games
Payment terminals
Cell phones
Smart phones
MP3 players
GPS
eReaders
Fitness Equipment
Home Entertainment
Set top boxes
Game consoles
DVD players
Blu-Ray disc drives
Industrial Equipment
Security systems
POS scanners
Personal Computing
Desktop computers
Notebooks
Tablets
te.com/products/Spring-Fingers
TE Connectivity
Spring Fingers
Types of Spring Fingers
Standard-flat contact
Pre-Loaded-Round or Flat Contact
Standard Box or C type
spring fingers both have
simple geometry for
easy application.
Pre-loaded spring fingers are
recommended when a stable electrical
contact with minimal deflection is
needed. The force change is minimized
over working range of the spring finger.
C
Box
Pre-loaded
Ultra low profile
Pre-loaded Scalable
Ultra low profile, Y type spring fingers, are used
in applications where low eꢀective heights are
needed.
The scalable family of spring fingers
oꢀers the same benefits as pre-loaded
spring fingers, but with a common
footprint.
Y
Scalable Pre-loaded
Scalable Spring Finger Key Features
Spring finger family with a common footprint
in scalable heights.
Locking for prevention of
overstretching due to sideways
force
Dimple on the
contact to enhance
the contact force
Pick-and-place area
for Φ 0.75mm nozzle
pre-load function
Contact can deflect to
the bottom of spring
finger without
Holes provide
increased soldering
strength and reduce
solder wicking
permanent deformation
Tip bent backwards to prevent hooking
Radius on both sides of tip
to remove sharp edges
te.com/products/Spring-Fingers
TE Connectivity
Spring Fingers
Standard and Ultra Low Profile Spring Fingers
Working Range
Uncom-
pressed Height
(mm)
Contact
Finish
Width
(mm)
P/N
Type
1447009-5
Y
Nickel
0.8
0.8
2.0
2.0
2040852-1
1447360-9
Gold Over
Nickel
Y
Gold over
Nickel
C
C
1.7
1.3
1.5
1.5
1.2
1447360-8
Gold over
Nickel
1746136-1
1871059-1
1674954-1
1734300-1
1447009-7
1447009-8
Gold over
Nickel
Box
2.0
Gold over
Nickel
C
Box
C
1.7
2.0
3.0
3.5
3.5
1.5
Gold
Flash
2.0
Gold over
Nickel
2.49
2.49
2.49
2.49
2.49
4.0
Gold over
Nickel
C
Gold over
Nickel
C
1734303-1
1437259-6
1775073-1
Tin-Copper
over Nickel
4.0
4.0
4.3
Box
C
Nickel
Gold over
Nickel
Box
te.com/products/Spring-Fingers
TE Connectivity
Spring Fingers
Pre-Loaded Spring Fingers
Working Range
Uncom-
Contact
Finish
Width
(mm)
pressed Height
P/N
Type
(mm)
1551631-4
Gold over
Nickel
Pre-Loaded
Pre-Loaded
1.24
1.0
1.05
1.05
1.1
2134078-1
2199001-1
Gold over
Nickel
1.2
1.2
Gold over
Nickel
Pre-Loaded
Pre-Loaded
1565158-1
1554825-1
Gold over
Nickel
1.5
Gold over
Nickel
Pre-Loaded
Pre-Loaded
1.3
1.0
1.0
1.0
1.0
1.0
0.8
2.0
1.1
1-1447360-1
1857724-4
1551281-4
1551401-4
1565322-1
2040761-1
1554901-1
Gold over
Nickel
1.4
1.8
Gold Flash
over Nickel
Pre-Loaded
Pre-Loaded
Gold over
Nickel
1.8
Gold over
Nickel
Pre-Loaded
Pre-Loaded
1.8
Gold over
Nickel
1.6
1.99
2.0
2.4
3.0
3.0
Gold over
Nickel
Pre-Loaded
Pre-Loaded
Gold over
Nickel
1746854-1
1827625-1
Nickel
1.1
Pre-Loaded
Pre-Loaded
Pre-Loaded
Gold over
Nickel
1.4
1.4
1903646-1
Gold over
Nickel
Scalable Spring Finger Family
Working Range
Uncom-
Contact
Finish
Width
(mm)
pressed Height
P/N
Type
(mm)
1551572-5
Gold over
Nickel
Pre-Loaded
1.80
1.15
1551573-5
1551574-5
1551575-5
1551576-5
Gold over
Nickel
Pre-Loaded
Pre-Loaded
Pre-Loaded
Pre-Loaded
2.15
2.60
3.00
3.40
1.15
1.15
1.3
Gold over
Nickel
Gold Flash
over Nickel
Gold over
Nickel
1.4
te.com/products/Spring-Fingers
Frequently asked questions
Question1
Why would I use a pre-loaded spring finger in an application?
Answer1
A pre-loaded spring finger allows you to get the same amount of force,
but with a smaller compression. A pre-loaded spring finger provides a
stable electrical contact with minimal deflection. Sometimes these are
preferred when there is limited height available in an application.
Question2
What style of spring finger is best for my application?
Answer2
Spring fingers are typically one of the last pieces added to a board. The
type to be used is dependent upon the height and space left on the
board. The decision of what type of spring finger to use is typically
based on personal preference.
Question3
Can the types of spring fingers be mixed in an application?
Answer3
Yes, an application can have multiple spring fingers and more than one
type. For example, there can be simple C types used for grounding
between the device and the PCB and then multiple pre-loaded spring
fingers on the board for shielding or other simple connections.
FOR MORE INFORMATION
TE Technical Support Center
Austria:
Baltic Regions:
Canada:
China:
France:
Germany:
Italy:
+43 (0) 1-9056-0
+44 (0) 1-382508080
+1 (800) 522-6752
+86 (0) 400-820-6015
+33 (0) 1-3420-8686
+49 (0) 6151-607-1999
+39 (0) 011-401-2111
Latin/S. America: +54 (0) 11-4733-2200
Mexico:
Netherlands:
Nordic:
Spain/Portugal:
Switzerland:
UK:
+52 (0) 55-1106-0800
+31 (0) 73-6246-999
+46 (0) 8-5072-5000
+34 (0) 932-910-330
+41 (0) 71-447-0447
+44 (0) 800-267666
+1 (800) 522-6752
USA:
For other country number go to te.com/supportcenter
Part numbers in this brochure are RoHS Compliant*, unless marked otherwise.
*as defined www.te.com/leadfree
te.com
© 2013 Tyco Electronics Corporation, a TE Connectivity Ltd. Company. All Rights Reserved.
6-1773460-8 CS 03/2013
Blu-ray™ is a trademark of the Blu-ray Disc. Association.
TE Connectivity, TE connectivity (logo) and TE (logo) are trademarks. Other logos, product
and/or Company names might be trademarks of their respective owners.
While TE has made every reasonable effort to ensure the accuracy of the information in this brochure, TE does not guarantee that it is
error-free, nor does TE make any other representation, warranty or guarantee that the information is accurate, correct, reliable or current.
TE reserves the right to make any adjustments to the inf ormation contained herein at any time without notice. TE expressly disclaims all
implied warranties regarding the information contained herein, including, but not limited to, any implied warranties of merchantability or
fitness for a particular purpose. The dimensions in this catalog are for reference purposes only and are subject to change without notice.
Specifications are subject to change without notice. Consult TE for the latest dimensions and design specifications.
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