WRF1JT110R Equivalent & Substitute Parts

Part Overview

The WRF1JT110R is a 110 Ohms ±5% 1W axial wirewound resistor manufactured by Stackpole Electronics Inc. This component is classified as Obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part features flame-proof and moisture-resistant construction with a safety rating, suitable for applications requiring reliable through-hole resistor performance in harsh environments.

Substiute Parts

WRF1JT110R

Stackpole Electronics IncIn Stock: 855WRF1JT110R Datasheet

Current PartRFQ

WW1JT110R

Stackpole Electronics IncIn Stock: 1005WW1JT110R Datasheet

MFR RecommendedRFQ

FKN2WSJT-73-100R

YAGEOIn Stock: 729FKN2WSJT-73-100R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the WRF1JT110R is determined by the following critical parameters:

• Resistance value: 110 Ohms or equivalent
• Tolerance: ±5%
• Power rating: Minimum 1W
• Composition: Wirewound
• Package: Axial through-hole
• Compliance: ROHS3 Compliant

Two substitute parts meet these criteria with varying degrees of parameter alignment:

WW1JT110R (Stackpole Electronics Inc) – Direct resistance and tolerance match with identical 1W power rating. Active product status. Smaller physical dimensions and improved temperature coefficient performance.

FKN2WSJT-73-100R (YAGEO) – Resistance value of 100 Ohms (9% lower than primary part) with 2W power rating (100% higher capacity). Maintains ±5% tolerance and axial wirewound construction. Active product status.

Parameter Comparison

Engineering Selection Recommendations

WW1JT110R is the primary substitute for WRF1JT110R. Both parts share identical electrical specifications (110 Ohms, ±5%, 1W) and are manufactured by the same supplier. WW1JT110R holds Active product status, ensuring long-term availability and supply chain stability. The extended operating temperature range (-55°C ~ 350°C) provides additional thermal margin compared to the original part. Both parts maintain ROHS3 compliance and equivalent safety certifications.

FKN2WSJT-73-100R serves as an alternative substitute when circuit design permits a 100 Ohm resistance value. The 2W power rating provides increased thermal headroom in applications with higher dissipation margins. This part is manufactured by YAGEO and maintains Active status with ROHS3 compliance. The operating temperature range (-40°C ~ 155°C) is narrower than the primary part, requiring thermal environment verification.

Frequently Asked Questions (FAQ)

Q: Can WW1JT110R directly replace WRF1JT110R without circuit modification?

A: Yes. WW1JT110R matches the primary electrical parameters (110 Ohms, ±5%, 1W) and package type (Axial). Both are wirewound resistors with identical resistance and tolerance specifications. The smaller physical dimensions of WW1JT110R may require PCB layout adjustment but do not affect electrical performance.

Q: Is FKN2WSJT-73-100R suitable as a substitute?

A: FKN2WSJT-73-100R can substitute WRF1JT110R only if the circuit design tolerates a 100 Ohm resistance value (9% deviation from 110 Ohms). The 2W power rating is compatible with 1W applications. Circuit analysis is required to confirm acceptable performance at the lower resistance value.

Q: What are the packaging differences between substitute parts?

A: WRF1JT110R is supplied in bulk packaging. WW1JT110R is supplied in Tape & Reel (TR) format for automated assembly. FKN2WSJT-73-100R is supplied in Cut Tape (CT) format. Packaging selection depends on production volume and assembly equipment compatibility.

Q: Are all substitute parts RoHS compliant?

A: Yes. WW1JT110R and FKN2WSJT-73-100R both maintain ROHS3 compliance, matching the environmental and regulatory status of WRF1JT110R.

Q: What is the temperature performance difference between substitutes?

A: WW1JT110R operates across -55°C ~ 350°C, providing the widest thermal range. WRF1JT110R operates -55°C ~ 200°C. FKN2WSJT-73-100R operates -40°C ~ 155°C with the most restricted range. Application thermal requirements determine the appropriate selection.