WW3AFTR200 Equivalent & Substitute Parts

Part Overview

The WW3AFTR200 is a 200 mOhms ±1% 3W axial wirewound resistor manufactured by Stackpole Electronics Inc. This component is designed for through-hole applications requiring precision current-sensing or low-resistance load applications. The part is Active status and widely used in industrial and power management circuits. Equivalent and substitute parts are identified when inventory constraints, packaging preferences, or supply chain requirements necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

WW3AFTR200

Stackpole Electronics IncIn Stock: 1064WW3AFTR200 Datasheet

Current PartRFQ

WW3FTR200

Stackpole Electronics IncIn Stock: 1767WW3FTR200 Datasheet

Parametric EquivalentRFQ

43FR20E

OhmiteIn Stock: 102943FR20E Datasheet

MFR RecommendedRFQ

ALSR03R2000FE12

Vishay DaleIn Stock: 1613ALSR03R2000FE12 Datasheet

MFR RecommendedRFQ

RS02BR2000FE70

Vishay DaleIn Stock: 4070RS02BR2000FE70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WW3AFTR200 is determined by strict equivalence across the following critical parameters:

• Resistance value: 200 mOhms
• Tolerance: ±1%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Termination count: 2
• RoHS compliance: ROHS3 Compliant

All identified substitute parts meet these core electrical and mechanical requirements. Packaging format (Tape & Reel, Cut Tape, or Bulk) represents a secondary consideration and does not affect electrical interchangeability. Physical dimensions may vary within acceptable tolerances for axial component mounting.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are Active status components with ROHS3 compliance certification. Selection between WW3AFTR200 and equivalent parts should be based on:

Stackpole Electronics Inc parts (WW3AFTR200, WW3FTR200): Direct manufacturer equivalents with identical electrical specifications and extended operating temperature range (-55°C ~ 350°C). Differentiation is packaging format only: Tape & Reel versus Cut Tape. WW3FTR200 offers higher current inventory (1693 Pcs).

Ohmite 43FR20E: Meets all core electrical parameters with identical temperature coefficient (±90ppm/°C). Operating temperature range not specified in documentation. Bulk packaging format.

Vishay Dale parts (ALSR03R2000FE12, RS02BR2000FE70): Both meet electrical requirements with moisture-resistant features. Operating temperature range limited to -65°C ~ 250°C, which is narrower than the primary part. RS02BR2000FE70 offers highest inventory availability (4019 Pcs) and Cut Tape packaging.

Frequently Asked Questions (FAQ)

Q: Can WW3FTR200 replace WW3AFTR200 directly? A: Yes. Both parts are manufactured by Stackpole Electronics Inc with identical electrical specifications (200 mOhms ±1%, 3W, ±90ppm/°C, -55°C ~ 350°C). The only difference is packaging format: WW3AFTR200 is supplied in Tape & Reel, while WW3FTR200 is Cut Tape. Electrical performance and mechanical fit are equivalent.

Q: What is the primary difference between Stackpole and Vishay Dale substitutes? A: Stackpole parts maintain the full operating temperature range of -55°C ~ 350°C. Vishay Dale parts (ALSR03R2000FE12 and RS02BR2000FE70) operate within -65°C ~ 250°C. For applications requiring operation above 250°C, Stackpole or Ohmite parts are required.

Q: Does packaging format affect electrical performance? A: No. Tape & Reel (TR), Cut Tape (CT), and Bulk packaging formats are supply and assembly considerations only. All formats contain identical components with identical electrical characteristics.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed parts carry ROHS3 Compliant certification and are suitable for applications with RoHS requirements.

Q: Which substitute offers the best inventory availability? A: RS02BR2000FE70 (Vishay Dale) has the highest inventory at 4019 Pcs. This part is suitable for applications operating within -65°C ~ 250°C.

Q: Can I use 43FR20E in high-temperature applications? A: The operating temperature range for 43FR20E is not specified in available documentation. For applications requiring confirmed operation above 250°C, use WW3AFTR200, WW3FTR200, or verify 43FR20E specifications with Ohmite directly.