SX100D Pressure Sensor Equivalent & Substitute Parts

Part Overview

The SX100D is a differential pressure sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for board mount applications with a 100PSI (689.48kPa) differential pressure range and Wheatstone Bridge output. The sensor outputs 0 mV to 150 mV at 5V supply and operates across -40°C to 85°C.

The SX100D is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems currently utilizing this component.

Substiute Parts

SX100D

Honeywell Sensing and Productivity SolutionsIn Stock: 1526SX100D Datasheet

Current PartRFQ

NSCSSNN100PDUNV

Honeywell Sensing and Productivity SolutionsIn Stock: 1755NSCSSNN100PDUNV Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SX100D are identified based on the following critical parameters that determine functional compatibility:

Pressure Measurement Capability: Operating pressure range must accommodate the 100PSI differential requirement. The substitute must support this pressure specification or higher.

Output Characteristics: The Wheatstone Bridge output type and output voltage range determine signal conditioning requirements. Substitutes must maintain compatible output signal levels for existing signal processing circuits.

Electrical Supply: The substitute must operate within the available supply voltage range. The SX100D requires 12V; substitutes must support this voltage or operate within a compatible range.

Physical Form Factor: Through-hole mounting and 4-SIP module packaging are essential for board-level integration. Substitutes must maintain identical or compatible package geometry.

Environmental Specifications: Operating temperature range (-40°C to 85°C) and compliance certifications (RoHS, REACH) must be maintained or exceeded.

Accuracy and Stability: The ±0.5% accuracy specification defines measurement precision requirements for the application.

The NSCSSNN100PDUNV qualifies as a direct substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The NSCSSNN100PDUNV is a qualified substitute for the obsolete SX100D based on the following engineering criteria:

Functional Equivalence: Both sensors operate as differential pressure transducers with Wheatstone Bridge output, identical 4-SIP module packaging, and matching through-hole mounting. The operating pressure range, temperature specifications, and port configuration are compatible.

Supply Chain Continuity: The NSCSSNN100PDUNV is classified as an active product with current manufacturing status and documented inventory availability (1676 Pcs), ensuring reliable procurement compared to the obsolete SX100D.

Compliance Alignment: Both components maintain RoHS compliance and REACH unaffected status, satisfying regulatory requirements for equivalent applications.

Performance Enhancement: The NSCSSNN100PDUNV provides improved accuracy (±0.25% versus ±0.5%) and higher maximum pressure rating (±250PSI versus 150PSI), offering design margin benefits without compromising existing system requirements.

Electrical Compatibility: The substitute operates within the 12V supply requirement of the original design while supporting a wider supply voltage range (1.5V to 12V), providing flexibility for future applications.

Output Signal Compatibility: The output range increase (172.5 mV versus 150 mV at 5V) represents a 15% sensitivity improvement. Existing signal conditioning circuits designed for the SX100D will function with the NSCSSNN100PDUNV; recalibration of signal processing may optimize system performance.

Frequently Asked Questions (FAQ)

Q: Can the NSCSSNN100PDUNV directly replace the SX100D without circuit modifications?

A: Yes. Both sensors share identical pressure type (differential), output type (Wheatstone Bridge), package format (4-SIP module), mounting method (through-hole), and operating temperature range. The 12V supply requirement is met by both components. Existing PCB layouts and connector assignments remain compatible.

Q: What is the significance of the output range difference (150 mV versus 172.5 mV)?

A: The NSCSSNN100PDUNV provides 15% higher output sensitivity at the same 5V supply voltage. This means the same pressure differential produces a proportionally larger output signal. Analog-to-digital converters and signal conditioning circuits will function correctly; however, the increased sensitivity may improve measurement resolution in systems with fixed-range signal processing.

Q: Why does the NSCSSNN100PDUNV have a ±100PSI operating range while the SX100D specifies 100PSI?

A: The NSCSSNN100PDUNV uses bidirectional pressure measurement (±100PSI), meaning it can measure pressure differentials in both directions. For unidirectional applications requiring only positive pressure measurement up to 100PSI, the substitute operates within the required specification. The maximum pressure rating (±250PSI) also provides additional safety margin.

Q: Are there any termination style differences between these components?

A: The SX100D termination style is not specified in the available data. The NSCSSNN100PDUNV uses PC Pin termination, which is standard for 4-SIP module through-hole components. Verify PCB pad configuration compatibility with your existing design.

Q: What is the TruStability® NSC series designation for the NSCSSNN100PDUNV?

A: TruStability® NSC is Honeywell's product series designation for this substitute component. This series classification indicates the component belongs to Honeywell's current-generation differential pressure sensor line, confirming active manufacturing and long-term availability.

Q: Is the NSCSSNN100PDUNV available in the same packaging as the SX100D?

A: Both components use 4-SIP module packaging suitable for through-hole mounting. The SX100D supplier device package is listed as "Button," while the NSCSSNN100PDUNV is supplied in standard "4-SIP" format. Both are compatible with identical PCB footprints and mounting procedures.

Q: What supply voltage should be used with the NSCSSNN100PDUNV?

A: The NSCSSNN100PDUNV operates across 1.5V to 12V. For direct replacement of the SX100D, use the existing 12V supply. The wider voltage range allows flexibility for future designs or applications with different power budgets.