WW3FT2K70 Equivalent & Substitute Parts

Part Overview

The WW3FT2K70 is a 2.7 kOhms ±1% 3W axial wirewound resistor manufactured by Stackpole Electronics Inc. This through-hole component features moisture-resistant construction and is designed for applications requiring precision resistance values with high power dissipation capability. The part maintains Active product status with 1149 units in current inventory. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range for this resistor category.

Substiute Parts

WW3FT2K70

Stackpole Electronics IncIn Stock: 1250WW3FT2K70 Datasheet

Current PartRFQ

RS02B2K700FE70

Vishay DaleIn Stock: 2459RS02B2K700FE70 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WW3FT2K70 is determined by strict equivalence across the following critical parameters:

• Resistance value: 2.7 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 3W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Physical dimensions: 0.187" Dia x 0.560" L (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Moisture resistance feature (required)
• RoHS3 compliance (required)

The RS02B2K700FE70 manufactured by Vishay Dale meets all substitution criteria. Packaging format differs (Cut Tape vs. Tape & Reel), which does not affect electrical or mechanical compatibility. Operating temperature range variation is permitted as a non-critical parameter for substitution purposes.

Parameter Comparison

Engineering Selection Recommendations

Both the WW3FT2K70 and RS02B2K700FE70 maintain Active product status and ROHS3 compliance. The RS02B2K700FE70 is available in higher inventory quantity (2419 units vs. 1149 units). Selection between these parts should be based on packaging requirements and supply chain availability. The Cut Tape format of the RS02B2K700FE70 may require different handling procedures compared to the Tape & Reel format of the primary part. Both components satisfy identical electrical and mechanical specifications for direct circuit board substitution.

Frequently Asked Questions (FAQ)

Q: Can RS02B2K700FE70 be used as a direct replacement for WW3FT2K70?

A: Yes. Both parts are electrically and mechanically equivalent across all critical parameters: 2.7 kOhms resistance, ±1% tolerance, 3W power rating, wirewound composition, axial package, and identical physical dimensions.

Q: Does the packaging format difference affect compatibility?

A: No. The difference between Tape & Reel and Cut Tape formats affects only handling and dispensing procedures during assembly. Electrical and mechanical performance on the circuit board are identical.

Q: Are there operating temperature limitations when substituting?

A: The RS02B2K700FE70 operates across -65°C to 250°C, while the WW3FT2K70 operates across -55°C to 350°C. For applications requiring operation above 250°C or below -65°C, the WW3FT2K70 is required. For standard operating ranges, both parts are compatible.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the WW3FT2K70 and RS02B2K700FE70 are ROHS3 compliant and REACH unaffected, with identical ECCN and HTSUS classifications.

Q: What determines substitution eligibility for this resistor category?

A: Substitution requires exact equivalence in resistance value, tolerance, power rating, composition type, package style, physical dimensions, temperature coefficient, and moisture resistance features. Operating temperature range and packaging format are non-critical parameters for substitution purposes.