FSS1500NGB

FSS1500NGB Datasheet

FSS-SMT Series

Part	Datasheet
FSS1500NGB	FSS1500NGB (pdf)

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FSS-SMT Series Low Profile Force Sensor DESCRIPTION Honeywell’s FSS-SMT Series force sensors are designed to be one of the most reliable force sensors available as illustrated by 20 million Mean Cycles To Failure MCTF at 25 °C [77 °F] rating. This low profile Surface Mount Technology SMT sensor allows for automated assembly on a printed circuit board, often helping the customer to reduce assembly costs. The FSS-SMT Series force sensor is designed to provide precise and reliable force sensing performance in a compact commercial-grade package. The sensor incorporates Honeywell sensing technology that uses a specialized piezoresistive micromachined silicon sensing element. The low power, unamplified, uncompensated Wheatstone bridge circuit design provides inherently stable millivolt output over the force range. Force sensors operate on the principle that the resistance of silicon-implanted piezoresistors will change when the resistors flex under applied force. The sensor concentrates force from the applications, through the stainless steel ball, directly to the silicon-sensing element. The amount of resistance changes in proportion to the amount of force being applied. This change in circuit resistance results in a corresponding mV output level change. The sensor package design incorporates patented modular construction. The use of innovative elastomeric technology and engineered molded plastics results in load excitation capacities of 44 N over-force. The stainless steel ball provides excellent mechanical stability, and is suitable for a variety of potential medical and commercial applications. FEATURES/BENEFITS • Surface Mount Technology allows for automated assembly and may eliminate hand soldering • RoHS-compliant materials meet Directive 2002/95/EC • Low deflection 30 microns typical at full scale help reduce measurement error • Direct mechanical coupling of the actuation ball to the sense element reduces coupling errors and keeps mechanical hysteresis to a minimum • Product rating of 20 million MCTF at 25 °C [77 °F], subject to application variation, provides for consistent output over time and reduces repairs or replacements • Small size minimizes space on the printed circuit board PCB • Provides enhanced sensitivity without compromising signal integrity, resulting in low system noise and reducing measurement errors • Electrically ratiometric output accommodates supply voltage variations, leading to low ratiometricity error • Low voltage supply allows for use in many battery powered applications • High resistance to electrostatic discharge ESD 8 KV meets ESD Sensitivity Classification Level 3, reducing special handling during assembly • Sensor output has low sensitivity to many mounting stresses FSS-SMT Series POTENTIAL APPLICATIONS Medical • Infusion pumps • Ambulatory non-invasive pumps • Occlusion detection • Kidney dialysis machines • Enteral pumps Commercial • Load and compression sensing • Variable tension control • Wire bonding equipment Table Absolute Maximum Ratings1 Parameter Electro-Static Discharge ESD Storage temperature2 Solderability3 Min. - -40 [-40] - Max. 8 100 [212] 260 [500] for 10 s Table Operating Specifications Performance characteristics at ± Vdc excitation, 25 °C [77 °F] Parameter Supply voltage4 Min. Typical Max. Operating force Operating temperature5 Offset6 Span7 Sensitivity8 Force non-linearity BFSL 9 Repeatability at N10 Mechanical hysteresis11 Thermal effect on offset12 0 -40 [-40] -15 150 0 180 85 [185] 15 210 25 °C to 0 °C [77 °F to 32 °F], 25 °C to 50 °C [77 °F to 122 °F] Thermal effect on span13 25 °C to 0 °C [77 °F to 32 °F], 25 °C to 50 °C [77 °F to 122 °F] Input resistance Output resistance Over force14 Unit kV °C [°F] °C [°F] Unit V N °C [°F] mV mV/N %FSS

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FSS-SMT Series

Low Profile Force Sensor

DESCRIPTION Honeywell’s FSS-SMT Series force sensors are designed to be one of the most reliable force sensors available as illustrated by 20 million Mean Cycles To Failure MCTF at 25 °C [77 °F] rating. This low profile Surface Mount Technology SMT sensor allows for automated assembly on a printed circuit board, often helping the customer to reduce assembly costs.

The FSS-SMT Series force sensor is designed to provide precise and reliable force sensing performance in a compact commercial-grade package. The sensor incorporates Honeywell sensing technology that uses a specialized piezoresistive micromachined silicon sensing element. The low power, unamplified, uncompensated Wheatstone bridge circuit design provides inherently stable millivolt output over the force range.

Force sensors operate on the principle that the resistance of silicon-implanted piezoresistors will change when the resistors flex under applied force. The sensor concentrates force from the applications, through the stainless steel ball, directly to the silicon-sensing element. The amount of resistance changes in proportion to the amount of force being applied. This change in circuit resistance results in a corresponding mV output level change.

The sensor package design incorporates patented modular construction. The use of innovative elastomeric technology and engineered molded plastics results in load excitation capacities of 44 N over-force. The stainless steel ball provides excellent mechanical stability, and is suitable for a variety of potential medical and commercial applications.

FEATURES/BENEFITS
• Surface Mount Technology allows for automated assembly and may eliminate hand soldering
• RoHS-compliant materials meet Directive 2002/95/EC
• Low deflection 30 microns typical at full scale help reduce measurement error
• Direct mechanical coupling of the actuation ball to the sense element reduces coupling errors and keeps mechanical hysteresis
to a minimum
• Product rating of 20 million MCTF at 25 °C [77 °F], subject to application variation, provides for consistent output over time and
reduces repairs or replacements
• Small size minimizes space on the printed circuit board PCB
• Provides enhanced sensitivity without compromising signal integrity, resulting in low system noise and reducing measurement
errors
• Electrically ratiometric output accommodates supply voltage variations, leading to low ratiometricity error
• Low voltage supply allows for use in many battery powered applications
• High resistance to electrostatic discharge ESD 8 KV meets ESD Sensitivity Classification Level 3, reducing special handling
during assembly
• Sensor output has low sensitivity to many mounting stresses

FSS-SMT Series

POTENTIAL APPLICATIONS Medical
• Infusion pumps
• Ambulatory non-invasive pumps
• Occlusion detection
• Kidney dialysis machines
• Enteral pumps

Commercial
• Load and compression sensing
• Variable tension control
• Wire bonding equipment

Table Absolute Maximum Ratings1

Parameter Electro-Static Discharge ESD Storage temperature2 Solderability3

Min. -
-40 [-40] -

Max. 8
100 [212] 260 [500] for 10 s

Table Operating Specifications Performance characteristics at ± Vdc excitation, 25 °C [77 °F]

Parameter Supply voltage4

Min.

Typical

Max.

Operating force Operating temperature5 Offset6 Span7 Sensitivity8 Force non-linearity BFSL 9 Repeatability at N10 Mechanical hysteresis11 Thermal effect on offset12
0 -40 [-40]
-15 150
0 180
85 [185]
15 210
25 °C to 0 °C [77 °F to 32 °F],
25 °C to 50 °C [77 °F to 122 °F] Thermal effect on span13
25 °C to 0 °C [77 °F to 32 °F],
25 °C to 50 °C [77 °F to 122 °F]

Input resistance

Output resistance Over force14

Unit kV °C [°F] °C [°F]

Unit V N
°C [°F] mV
mV/N %FSS

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Datasheet ID: FSS1500NGB 636446