SCC30DD4 Equivalent & Substitute Parts Reference

Part Overview

The SCC30DD4 is a differential pressure sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for board mount applications requiring 30PSI (206.84kPa) differential pressure measurement. This component features a Wheatstone Bridge output with dual 60 mV ~ 150 mV signal range and operates across -40°C to 85°C. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring similar performance characteristics.

Substiute Parts

SCC30DD4

Honeywell Sensing and Productivity SolutionsIn Stock: 914SCC30DD4 Datasheet

Current PartRFQ

NSCDRRN030PDUNV

Honeywell Sensing and Productivity SolutionsIn Stock: 1109NSCDRRN030PDUNV Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCC30DD4 is determined by the following critical parameters:

Pressure Specification Match: Operating pressure of ±30PSI (±206.84kPa) differential with maximum pressure rating of ±60PSI (±413.69kPa) establishes the primary functional requirement.

Output Characteristics: Wheatstone Bridge output topology with voltage output in the 0 mV ~ 207 mV range (5V supply) is functionally compatible with the original 60 mV ~ 150 mV output, as both represent ratiometric bridge outputs suitable for signal conditioning circuits.

Environmental Compliance: Operating temperature range of -40°C ~ 85°C and RoHS compliance status must be maintained.

Mechanical Interface: Through-hole mounting with PC pin termination and dual port configuration ensures PCB integration compatibility.

Package Consideration: While the substitute part uses an 8-DIP package versus the original 6-DIP, both are through-hole DIP modules compatible with standard PCB footprints designed for pressure sensor modules.

The NSCDRRN030PDUNV qualifies as a direct substitute based on matching pressure range, output topology, temperature range, compliance certifications, and mounting methodology.

Parameter Comparison

Engineering Selection Recommendations

The NSCDRRN030PDUNV serves as a functional equivalent for the obsolete SCC30DD4 based on the following engineering criteria:

Pressure Performance: Both sensors operate at identical differential pressure specifications (30PSI nominal, 60PSI maximum), ensuring compatibility with system pressure requirements.

Output Compatibility: Wheatstone Bridge topology is preserved in the substitute part. While output voltage ranges differ (60-150 mV versus 0-207 mV), both represent ratiometric outputs suitable for standard instrumentation amplifier conditioning circuits. The substitute's wider output range and improved ±0.25% accuracy provide enhanced signal resolution.

Environmental Certification: Both parts maintain RoHS compliance and identical operating temperature range (-40°C ~ 85°C), satisfying regulatory and thermal requirements.

Mechanical Integration: Through-hole PC pin termination is identical. However, two mechanical considerations require attention: (1) Package change from 6-DIP to 8-DIP requires PCB footprint verification; (2) Port tube diameter reduction from 0.09" to 0.08" and port style change from barbless to barbed necessitate tubing adapter evaluation.

Product Status: Both components are classified as obsolete. For new designs, evaluation of current-generation Honeywell pressure sensor offerings is recommended to ensure long-term supply availability.

Frequently Asked Questions (FAQ)

Q: Can the NSCDRRN030PDUNV directly replace the SCC30DD4 without circuit modifications?

A: The substitute part maintains Wheatstone Bridge output topology and identical operating temperature range. However, circuit modifications may be necessary due to: (1) different output voltage range requiring signal conditioning adjustment; (2) 8-DIP package versus 6-DIP requiring PCB footprint redesign; (3) port tube diameter and style differences requiring mechanical adapter evaluation.

Q: What is the significance of the port tube diameter difference (0.09" versus 0.08")?

A: The 0.01" (0.25mm) diameter reduction affects tubing compatibility. The original 0.09" barbless ports require different tubing than the 0.08" barbed ports on the substitute. Tubing adapters or replacement tubing assemblies must be specified to maintain pressure line integrity.

Q: Does the improved accuracy of the NSCDRRN030PDUNV (±0.25% versus ±0.5%) affect system calibration?

A: Improved accuracy does not create incompatibility. The substitute part's tighter tolerance provides better measurement precision. Existing system calibration procedures may require adjustment to leverage this improved accuracy, but the substitute remains functionally compatible.

Q: Are there pin-to-pin compatibility considerations between the 6-DIP and 8-DIP packages?

A: No direct pin-to-pin compatibility exists due to different package formats. PCB redesign is required to accommodate the 8-DIP footprint. Pin function mapping between the two packages must be verified against manufacturer datasheets before implementation.

Q: What supply voltage should be used with the NSCDRRN030PDUNV?

A: The substitute part operates across 1.5V ~ 12V supply range. The original SCC30DD4 does not specify supply voltage. Selection within the 1.5V ~ 12V range depends on system power architecture and signal conditioning requirements.

Q: Are both parts suitable for new product designs?

A: Both the SCC30DD4 and NSCDRRN030PDUNV are classified as obsolete. For new designs, current-generation Honeywell pressure sensor products should be evaluated to ensure long-term manufacturing availability and supply chain continuity.