SX30A Pressure Sensor Equivalent & Substitute Parts

Part Overview

The SX30A is a 30PSI absolute pressure sensor manufactured by Honeywell Sensing and Productivity Solutions. It features a Wheatstone Bridge output with 0 mV ~ 110 mV signal range, 12V supply voltage, and ±0.5% accuracy. The device is packaged in a 4-SIP Module with through-hole mounting for board-level applications.

The SX30A is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this sensor.

Substiute Parts

SX30A

Honeywell Sensing and Productivity SolutionsIn Stock: 727SX30A Datasheet

Current PartRFQ

NSCSSNN030PAUNV

Honeywell Sensing and Productivity SolutionsIn Stock: 765NSCSSNN030PAUNV Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SX30A is determined by the following critical parameters:

Pressure Specification: The substitute must measure 30PSI (206.84kPa) absolute pressure to maintain functional equivalence in the target application.

Output Type & Signal Range: The substitute must provide Wheatstone Bridge output. The SX30A outputs 0 mV ~ 110 mV; substitutes with different output ranges require circuit-level signal conditioning adjustments.

Package & Mounting: The substitute must use 4-SIP Module packaging with through-hole mounting to ensure mechanical and electrical compatibility with existing PCB layouts.

Operating Temperature Range: The substitute must support -40°C ~ 85°C operation to match environmental specifications.

Supply Voltage Compatibility: The SX30A requires 12V supply. Substitutes with wider supply voltage ranges (such as 1.5V ~ 12V) are compatible but do not require voltage regulation changes.

Compliance & Status: The substitute must maintain RoHS compliance and be available in active production status to ensure long-term supply reliability.

Parameter Comparison

Engineering Selection Recommendations

NSCSSNN030PAUNV as Primary Substitute:

The NSCSSNN030PAUNV is the direct equivalent substitute for the obsolete SX30A. Both sensors share identical pressure specifications (30PSI absolute), output type (Wheatstone Bridge), operating temperature range (-40°C ~ 85°C), package format (4-SIP Module), and mounting configuration (through-hole).

The NSCSSNN030PAUNV is manufactured by the same supplier (Honeywell Sensing and Productivity Solutions) and maintains active product status, ensuring ongoing availability and supply chain continuity. The device is RoHS compliant and carries the same regulatory classification (EAR99, HTSUS 9026.20.4000).

Key Differences Requiring Circuit Evaluation:

The NSCSSNN030PAUNV output signal range is 0 mV ~ 74 mV, compared to the SX30A's 0 mV ~ 110 mV. This difference requires signal conditioning circuit adjustment. The substitute offers improved accuracy (±0.25% versus ±0.5%), which provides enhanced measurement precision.

The NSCSSNN030PAUNV supports a wider supply voltage range (1.5V ~ 12V) compared to the SX30A's fixed 12V requirement. This flexibility allows operation across broader power supply conditions.

The maximum pressure rating differs: NSCSSNN030PAUNV is rated to 60PSI (413.69kPa) versus SX30A's 90PSI (620.53kPa). Applications requiring overpressure protection beyond 60PSI must evaluate alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the NSCSSNN030PAUNV directly replace the SX30A without circuit modifications?

A: The NSCSSNN030PAUNV is mechanically and electrically compatible in terms of package, mounting, and pressure measurement range. However, the output signal range differs (74 mV versus 110 mV). Signal conditioning circuits must be adjusted to accommodate the lower output voltage. Direct pin-for-pin substitution without signal path recalibration will result in measurement errors.

Q: What is the impact of the different output signal ranges?

A: The SX30A provides 110 mV full-scale output, while the NSCSSNN030PAUNV provides 74 mV full-scale output. Analog-to-digital converter (ADC) input scaling and software calibration constants must be recalculated. The substitute's improved accuracy (±0.25% versus ±0.5%) partially compensates for the lower signal amplitude.

Q: Are both sensors compatible with the same PCB layout?

A: Yes. Both the SX30A and NSCSSNN030PAUNV use identical 4-SIP Module packaging with through-hole termination. PCB footprints are mechanically compatible. Signal conditioning circuit modifications are required at the analog input stage, not at the sensor mounting location.

Q: What is the significance of the maximum pressure rating difference?

A: The SX30A is rated to 90PSI maximum pressure; the NSCSSNN030PAUNV is rated to 60PSI. If the application includes transient overpressure events exceeding 60PSI, the substitute may experience sensor damage. Applications with confirmed pressure peaks below 60PSI are unaffected.

Q: Does the wider supply voltage range of the NSCSSNN030PAUNV provide any advantage?

A: The NSCSSNN030PAUNV accepts 1.5V ~ 12V supply, compared to the SX30A's fixed 12V requirement. This flexibility allows operation with lower-voltage power supplies or battery-powered systems. Existing 12V supply designs require no modification.

Q: Are both sensors RoHS compliant?

A: Yes. Both the SX30A and NSCSSNN030PAUNV are RoHS compliant and carry identical regulatory classifications (EAR99, HTSUS 9026.20.4000).

Q: What is the inventory status for each part?

A: The SX30A is obsolete with 689 pieces in current stock. The NSCSSNN030PAUNV is active production with 755 pieces in stock. Long-term availability is assured only for the NSCSSNN030PAUNV.