SX100A Pressure Sensor Equivalent & Substitute Parts

Part Overview

The SX100A is a board-mount absolute pressure sensor manufactured by Honeywell Sensing and Productivity Solutions. It measures 100 PSI (689.48 kPa) with a Wheatstone Bridge output of 0 mV to 150 mV at 5V supply. The device is packaged in a 4-SIP Module with through-hole mounting and operates across -40°C to 85°C. The SX100A is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

SX100A

Honeywell Sensing and Productivity SolutionsIn Stock: 1046SX100A Datasheet

Current PartRFQ

NSCSSNN100PAUNV

Honeywell Sensing and Productivity SolutionsIn Stock: 1616NSCSSNN100PAUNV Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SX100A is based on the following critical parameters that must remain compatible:

Pressure Measurement Capability: The substitute must measure 100 PSI absolute pressure as the primary operating point.

Output Interface: The Wheatstone Bridge output type must be maintained to ensure signal conditioning compatibility with existing circuit designs.

Package and Mounting: The 4-SIP Module package with through-hole mounting must be preserved for PCB layout compatibility.

Operating Environment: Temperature range of -40°C to 85°C must be supported.

Supply Voltage Compatibility: The substitute must operate within the system's 12V supply specification or provide a compatible voltage range.

The NSCSSNN100PAUNV meets these substitution criteria while offering enhanced specifications in accuracy and maximum pressure rating.

Parameter Comparison

Engineering Selection Recommendations

The NSCSSNN100PAUNV is the direct substitute for the obsolete SX100A based on the following engineering criteria:

Product Status: The SX100A is obsolete, while the NSCSSNN100PAUNV is active and currently manufactured. This ensures long-term availability and supply chain continuity.

Regulatory Compliance: Both parts maintain RoHS compliance and REACH unaffected status, satisfying environmental and regulatory requirements without modification.

Functional Compatibility: Both sensors operate as absolute pressure transducers with Wheatstone Bridge output at the same 100 PSI operating pressure point and identical temperature range. The 4-SIP Module package and through-hole mounting are identical, enabling direct PCB replacement.

Enhanced Specifications: The NSCSSNN100PAUNV provides improved accuracy (±0.25% versus ±0.5%) and extended maximum pressure rating (250 PSI versus 150 PSI), offering greater design margin and measurement precision.

Output Signal Consideration: The NSCSSNN100PAUNV output range is 0 mV to 63 mV versus the SX100A's 0 mV to 150 mV. Signal conditioning circuits must be evaluated to confirm compatibility with the reduced output span. The substitute's wider supply voltage range (1.5V to 12V) provides additional flexibility for power management.

Frequently Asked Questions (FAQ)

Q: Can the NSCSSNN100PAUNV directly replace the SX100A without PCB modifications?

A: The NSCSSNN100PAUNV uses identical 4-SIP Module packaging and through-hole mounting, allowing direct physical replacement on the PCB. However, the output signal range differs (63 mV versus 150 mV), requiring verification that signal conditioning and analog-to-digital conversion circuits can accommodate the reduced output span.

Q: What is the primary difference between these two sensors?

A: Both measure 100 PSI absolute pressure with Wheatstone Bridge output and identical operating temperature range. The key differences are: the NSCSSNN100PAUNV offers superior accuracy (±0.25% versus ±0.5%), higher maximum pressure rating (250 PSI versus 150 PSI), lower output signal range (63 mV versus 150 mV), and wider supply voltage compatibility (1.5V to 12V versus 12V fixed).

Q: Is the NSCSSNN100PAUNV available in the same packaging as the SX100A?

A: Yes. Both parts use 4-SIP Module packaging with through-hole mounting. The NSCSSNN100PAUNV is supplied in bulk packaging, while the SX100A was supplied in button packaging. The electrical and mechanical interfaces are identical.

Q: Will the NSCSSNN100PAUNV work with existing 12V power supplies?

A: Yes. The NSCSSNN100PAUNV operates across 1.5V to 12V, fully encompassing the SX100A's 12V requirement. No power supply modifications are necessary.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are RoHS compliant and REACH unaffected. Regulatory status is equivalent, and no additional compliance documentation is required for substitution.

Q: What should be verified before implementing the NSCSSNN100PAUNV as a substitute?

A: Verify that signal conditioning circuits can process the NSCSSNN100PAUNV's 0 mV to 63 mV output range. Confirm that analog-to-digital converter input ranges and software calibration factors are compatible with the reduced output span. Validate that the improved accuracy (±0.25%) meets or exceeds system requirements.