Spring Fingers
Spring fingers (also known as shield fingers, grounding springs, universal ground contacts, or clips) can be used in
all types of small printed circuit board applications across all industries. A spring finger is a single contact, surface
mountable internal connector with multiple functions on a PCB. It can be used for antenna feeds, low voltage
electrical connections or for grounding to prevent EMI noise and static caused by a speaker, motor, microphone or
any other vibration within an application. TE continues to expand its spring finger portfolio offering a broad range
of styles, heights, and materials to meet all customers’ needs.
Features
• Used for grounding between a
device and PCB
• Provides shielding for anything
that can cause vibrations within a
device, such as motors, speakers,
and microphones
• Provides a cost effective solution
for antenna feeds in all types of
devices
• Used as a connection for simple
stacking applications between
primary and secondary PCBs
• Available in heights as low as
1.0mm and up to 4.3mm
• Requires limited space on a PCB
• Accommodates soldering and
pick and place using standard
equipment
Benefits
• Prevents EMI noise and static
• Provides a highly reliable
connection
• Provides an easy and
inexpensive method for
connecting multiple PCBs
• Allows for versatility in PCB
layout
• Provides flexible, quick-turn
design-ins
• Does not require expensive,
specialized application
equipment
Applications
• Mobile phones
• Wearable devices
• Game consoles
• Tablets
• Patient monitoring devices
• POS scanners
• Security systems
• GPS devices
www.te.com/products/Spring-Fingers
CONSUMER DEVICES
/ Spring Fingers
Applications and Industries
Consumer Devices
•
Digital Cameras
•
Payment Terminals
•
Games and Game Consoles
•
Mobile Phones
•
MP3 Players
•
Wearable Devices
•
Home Entertainment Systems
•
Desktop Computers
•
Notebooks
•
Tablets
Industrial / Automotive
•
POS Scanners
•
Security Systems
•
Thermostats
•
Backup Cameras
•
GPS
•
Satellite Radio
Medical
•
Fitness Equipment
•
Patient Monitoring Devices
•
Wearable Devices
a
b
Tablet PCB
a.
Used for grounding or shielding on the PCB
b.
Used for an antenna feed
Medical Device PCB
Used for grounding or shielding on the PCB
Wearable Device PCB
Used for grounding between the PCB
and the cover of the device
CONSUMER DEVICES
/
Spring Fingers
P
PAGE 2
Types of Spring Fingers
Standard-flat
Contact
Box
C
Pre-loaded
Contact
Pre-loaded
Ultra
Low Profile
Y
Standard box and C type
connectors 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 the
working range of the spring
finger. Pre-loaded spring fingers
are available in three scalable
families.
Ultra low profile, Y type spring
fingers are used in applications
where low effective heights are
needed.
Scalable Spring Fingers Key Features
Standard Scalable
•
Dimples on the contact enhance
contact force
Side Protected
Scalable
•
Low force from 0.2N – 1.0N
•
To increase strength and
Side Protected
Pre-loaded Scalable
•
Very low force from 0.2N – 0.7N
•
Offers a family of smaller
•
Holes for connection to the PCB
help increase solder strength and
reduce wicking
reduce wicking
working ranges
•
Locking feature prevents over-
•
Prevents tangled springs in
stretching
operator gloves
transfer
•
Enhanced sidewall design
•
Contact deflects to the bottom to
•
Avoids deflection during PCB
help prevent permanent deforma-
tion
•
Bent tip prevents hooking
•
Radius on both sides of tip helps
remove sharp edges
CONSUMER DEVICES
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Spring Fingers
P
PAGE 3
1447009-5
Y
Gold
0.8
2
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
Working Range
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
Product
Number
Type
Contact
Finish
Uncom-
Width
pressed
(mm)
Height(mm)
Working Range
Current
Capacity
0.5A
2040852-1
Y
Gold
0.8
2
1.5A
1447360-9
C
Gold
1.7
1.5
1.5A
Standard and ultra low profile
1447360-8
C
Gold
1.3
1.2
1.5A
1746136-1
Box
Gold
1.5
2
1.5A
1871059-1
C
Gold
1.7
1.5
1.5A
1674954-1
Box
Gold
2
2
0.5A
1734300-1
C
Gold
3
2.5
1.5A
1447009-7
C
Gold
3.5
2.5
1.5A
1447009-8
C
Gold
Tin-
copper
Nickel
3.5
2.5
1.5A
1734303-1
Box
4
2.5
1.5A
1437259-6
C
4
2.5
1.5A
1775073-1
Box
Gold
4.3
2.5
1.5A
Product
Number
1551631-5
Type
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Contact
Finish
Gold
Uncom-
Width
pressed
(mm)
Height(mm)
1.24
1
Current
Capacity
0.5A
2134078-1
Gold
1.2
1.05
1.5A
2199001-1
Gold
1.2
1.05
1.5A
1565158-1
Gold
1.45
1.1
1.0A
Pre-Loaded
PreLoaded
1554825-1
Gold
1.3
1.05
1.5A
1-1447360-1
Gold
1.4
1
1.5A
1857724-4
Gold
1.8
1
1.5A
1551281-4
Gold
1.8
1
1.5A
1551401-4
Gold
1.8
1
1.5A
1565322-1
Gold
1.6
0.75
1.5A
2040761-1
Gold
1.99
2
1.5A
1554901-1
Gold
2
1.1
1.5A
CONSUMER DEVICES
/ Spring Fingers
P
PAGE
4
1746854-1
Pre-Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Gold
2.4
1.1
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
Working Range
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
Product
Number
Type
Contact
Finish
Uncom-
Width
pressed
(mm)
Height(mm)
Working Range
Current
Capacity
1.0A
1827625-1
Gold
3
1.4
1.5A
1903646-1
Gold
3
1.4
1.5A
2286211-x
Gold
2.4
1.7
4.2A
Product
Number
1551572-5
Type
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
C
Contact
Finish
Gold
Uncom-
Width
pressed
(mm)
Height(mm)
1.8
1.15
Current
Capacity
1.5A
1551573-5
Gold
2.15
1.15
0.5A
1551574-5
Gold
2.6
1.15
0.5A
1551575-5
Gold
3
1.15
0.5A
1551576-5
Gold
3.4
1.15
1.5A
PreLoaded
2199248-4
Gold
1
2
2.0A
2199248-5
C
Gold
1.3
2
2.0A
2199248-6
C
Gold
1.6
2
2.0A
2199249-3
C
Gold
2
1.5
2.0A
Scalable
2199249-4
C
Gold
2.3
1.5
2.0A
3-2199250-2
C
Gold
2.9
1.5
2.0A
3-2199250-3
C
Gold
3.2
1.5
2.0A
3-2199250-4
C
Gold
3.6
1.5
2.0A
3-2199250-5
C
Gold
3.8
1.5
2.0A
2108693-4
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Pre-
Loaded
Gold
1.1
1
1.5A
2108610-5
Gold
1.4
1
1.5A
2108611-5
Gold
1.7
1
1.5A
2108612-5
Gold
2.05
1
1.5A
2108613-5
Gold
2.4
1
1.5A
2108614-5
Gold
2.7
1
1.5A
2108609-5
Gold
3
1
1.5A
CONSUMER DEVICES
/
Spring Fingers
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PAGE 5
Microchip MCU
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