Equivalent & Substitute Parts for 175-502GAF-301

Part Overview

The 175-502GAF-301 is an NTC thermistor manufactured by Honeywell Sensing and Productivity Solutions, designed for temperature sensing applications requiring a 5kΩ resistance at 25°C in a 1206 surface mount package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. The part operates across a temperature range of -60°C to 125°C and meets RoHS compliance requirements.

Substiute Parts

175-502GAF-301

Honeywell Sensing and Productivity SolutionsIn Stock: 988175-502GAF-301 Datasheet

Current PartRFQ

NTHS1206N02N5001JE

Vishay DaleIn Stock: 2830NTHS1206N02N5001JE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 175-502GAF-301 is determined by strict alignment with the following parameters:

Mandatory Matching Criteria:

• Resistance value: 5kΩ at 25°C
• Resistance tolerance: ±5%
• Package / Case: 1206 (3216 Metric)
• Mounting type: Surface Mount
• Operating temperature range: Must encompass or equal -60°C to 125°C
• RoHS compliance status: Must meet or exceed RoHS requirements

Secondary Compatibility Factors:

• B value characteristics (thermal response curve)
• Moisture sensitivity level
• Packaging format (Tape & Reel or bulk)

The identified substitute NTHS1206N02N5001JE by Vishay Dale satisfies all mandatory matching criteria. While the B25/75 value differs (3477K versus the original 3320K specification), both components operate within the same thermal response envelope for the specified temperature range.

Parameter Comparison

Engineering Selection Recommendations

NTHS1206N02N5001JE (Vishay Dale) as Primary Substitute:

This component meets all mandatory electrical and mechanical specifications for direct substitution. The part maintains identical resistance value, tolerance, package form factor, and mounting characteristics. The ROHS3 compliance status exceeds the original RoHS requirement, providing enhanced environmental compliance. The ±3% B value tolerance specification on the substitute provides improved thermal response predictability compared to the unspecified tolerance on the original part.

Inventory and Availability Consideration:

The substitute part (NTHS1206N02N5001JE) is available in significantly higher inventory (2,746 pcs) compared to the original part (929 pcs), supporting production continuity and supply chain stability.

Product Status Implications:

Both the original part and substitute carry restricted product status designations (Obsolete and Not For New Designs, respectively). For new circuit designs, evaluation of current-generation NTC thermistor alternatives with active product status is recommended as a secondary consideration, though such alternatives fall outside the scope of direct equivalent substitution.

Frequently Asked Questions (FAQ)

Q: Can NTHS1206N02N5001JE be used as a direct replacement for 175-502GAF-301 in existing designs?

A: Yes. Both components share identical resistance value (5kΩ), tolerance (±5%), package form factor (1206), and mounting type (Surface Mount). Electrical performance in temperature sensing circuits will be functionally equivalent.

Q: What is the significance of the different B value specifications?

A: The original part specifies B0/50 = 3320K, while the substitute provides B25/75 = 3477K. These represent different temperature coefficient measurement points. Both values fall within the standard range for 5kΩ NTC thermistors and will produce comparable thermal response curves across the -60°C to 125°C operating range.

Q: Does the substitute's ROHS3 compliance affect compatibility?

A: No. ROHS3 compliance is a superset of RoHS compliance, meaning the substitute meets all original environmental requirements plus additional restrictions. This represents an improvement in regulatory alignment.

Q: Are there packaging format differences between these parts?

A: The original part packaging format is not specified in available data. The substitute is supplied in Tape & Reel (TR) format, which is standard for automated assembly processes. Verify packaging requirements for your specific assembly operation.

Q: What should be considered regarding the "Not For New Designs" status of the substitute?

A: This designation indicates the substitute is in mature/end-of-life phase. While suitable for replacement in existing designs, new circuit development should evaluate current-generation thermistor alternatives with active product status for long-term supply assurance.

Q: Is thermal response identical between these parts?

A: Thermal response is functionally equivalent for the specified operating range. The B value difference (3320K vs. 3477K) represents approximately 4.7% variation, which is within acceptable tolerance for most temperature sensing applications. Circuit-level thermal calibration may require minor adjustment if sub-degree accuracy is critical.