WW1FT75R0 Equivalent & Substitute Parts

Part Overview

The WW1FT75R0 is a 75 Ohm, 1% tolerance, 1W axial wirewound through-hole resistor manufactured by Stackpole Electronics Inc. This component is designed for applications requiring precision resistance with moisture resistance characteristics and operates across a wide temperature range from -55°C to 350°C. The part maintains Active product status with 696 units currently in stock. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and design alternatives when the primary part becomes unavailable or when specific packaging or sourcing requirements necessitate component substitution.

Substiute Parts

WW1FT75R0

Stackpole Electronics IncIn Stock: 739WW1FT75R0 Datasheet

Current PartRFQ

41F75RE

OhmiteIn Stock: 125941F75RE Datasheet

MFR RecommendedRFQ

RS01A75R00FE70

Vishay DaleIn Stock: 1906RS01A75R00FE70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WW1FT75R0 are qualified based on the following electrical and mechanical parameters:

• Resistance value: 75 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 1W (exact match required)
• Composition: Wirewound (exact match required)
• Package/Case: Axial (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Number of terminations: 2 (exact match required)
• RoHS compliance: ROHS3 Compliant (minimum requirement)

Substitute parts may vary in physical dimensions, operating temperature range, packaging format (Tape & Reel vs. Bulk vs. Cut Tape), and specific features such as moisture resistance. These variations do not affect electrical equivalency when the core parameters listed above are identical.

Parameter Comparison

Engineering Selection Recommendations

All three parts—WW1FT75R0, 41F75RE, and RS01A75R00FE70—are electrically equivalent 75 Ohm, 1% tolerance, 1W wirewound axial resistors with identical temperature coefficients and full RoHS3 compliance. Selection between these parts should be based on:

• Packaging format requirements: Tape & Reel for automated assembly, Bulk for manual assembly, or Cut Tape for mixed-volume applications
• Physical dimensions: The WW1FT75R0 and RS01A75R00FE70 have smaller diameters compared to the 41F75RE, which may be relevant for space-constrained PCB layouts
• Feature requirements: The WW1FT75R0 and RS01A75R00FE70 include moisture resistance; the 41F75RE does not specify this feature
• Operating temperature range: The WW1FT75R0 supports -55°C to 350°C; the RS01A75R00FE70 supports -65°C to 250°C; the 41F75RE does not specify an operating temperature range
• Inventory availability: All three parts maintain active stock status

Frequently Asked Questions (FAQ)

Q: Can the 41F75RE be used as a direct replacement for the WW1FT75R0?

A: Yes, electrically. Both parts share identical resistance (75 Ohms), tolerance (±1%), power rating (1W), composition (wirewound), package type (axial), and temperature coefficient (±20ppm/°C). Physical dimensions differ, and the 41F75RE does not specify moisture resistance. PCB layout compatibility must be verified based on available space.

Q: What is the difference between the packaging formats?

A: Tape & Reel (TR) packaging is optimized for automated pick-and-place assembly. Bulk packaging is suitable for manual assembly or small-quantity applications. Cut Tape (CT) packaging provides a middle ground for mixed-volume production. All three formats contain electrically identical components.

Q: Are there operating temperature limitations when substituting parts?

A: The WW1FT75R0 operates from -55°C to 350°C. The RS01A75R00FE70 operates from -65°C to 250°C. The 41F75RE does not specify an operating temperature range. If your application requires operation above 250°C or below -65°C, verify that the selected substitute meets your temperature requirements.

Q: Does moisture resistance affect substitution eligibility?

A: Moisture resistance is a feature, not a substitution criterion. The WW1FT75R0 and RS01A75R00FE70 include moisture resistance; the 41F75RE does not. If your application requires moisture resistance, select either the WW1FT75R0 or RS01A75R00FE70.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts—WW1FT75R0, 41F75RE, and RS01A75R00FE70—are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.