EP1WS100RJ Equivalent & Substitute Parts

Part Overview

The EP1WS100RJ is a 100 Ohm, 1W axial wirewound resistor manufactured by TE Connectivity Passive Product. This through-hole component features flame retardant coating and pulse withstanding capability, designed for applications requiring reliable power dissipation in compact form factors. The part is currently Active in product status with 1057 pieces available in inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits component interchange.

Substiute Parts

EP1WS100RJ

TE Connectivity Passive ProductIn Stock: 1074EP1WS100RJ Datasheet

Current PartRFQ

KNP100JR-52-100R

YAGEOIn Stock: 9072KNP100JR-52-100R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EP1WS100RJ is determined by the following critical parameters:

Electrical Parameters:

• Resistance value: 100 Ohms
• Tolerance: ±5%
• Power rating: 1W
• Composition: Wirewound

Mechanical Parameters:

• Package type: Axial
• Number of terminations: 2
• Through-hole configuration

Compliance Parameters:

• RoHS3 compliance
• REACH unaffected status
• ECCN classification: EAR99

The substitute part KNP100JR-52-100R meets all critical electrical and mechanical requirements. Both parts share identical resistance, tolerance, power rating, and wirewound composition. Both are axial through-hole components with two terminations and maintain equivalent RoHS3 and REACH compliance. Physical dimensions differ slightly, and operating temperature ranges vary, but these differences do not prevent functional substitution in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Both the EP1WS100RJ and KNP100JR-52-100R are Active products with full RoHS3 compliance and REACH unaffected status, ensuring regulatory compliance for current and future applications. The electrical specifications are identical across both parts: 100 Ohm resistance, ±5% tolerance, and 1W power rating in wirewound composition.

The KNP100JR-52-100R offers an extended operating temperature range (-40°C ~ 200°C) compared to the EP1WS100RJ (-55°C ~ 155°C), providing broader thermal capability for high-temperature applications. However, the EP1WS100RJ includes pulse withstanding as an explicit feature, which may be critical for applications subject to transient overvoltage conditions.

Physical dimensions differ between the two parts. The EP1WS100RJ is more compact (3.50mm diameter, 10.00mm length) while the KNP100JR-52-100R is larger (4.60mm diameter, 11.50mm length). PCB layout and mechanical clearance requirements must be evaluated for each application.

Both parts are supplied in Cut Tape packaging and maintain equivalent inventory availability. Selection between these parts should be based on specific application requirements regarding temperature range, pulse withstanding capability, and available PCB space.

Frequently Asked Questions (FAQ)

Q: Can the KNP100JR-52-100R directly replace the EP1WS100RJ in all applications?

A: The KNP100JR-52-100R is electrically equivalent with identical resistance, tolerance, and power rating. However, physical dimensions differ. The substitute part is larger in both diameter and length. PCB layout compatibility and mechanical clearance must be confirmed before substitution. The EP1WS100RJ includes pulse withstanding as a specified feature; applications requiring this capability should retain the original part.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Physical dimensions—the KNP100JR-52-100R is larger; (2) Operating temperature range—the KNP100JR-52-100R extends to 200°C maximum versus 155°C for the EP1WS100RJ; (3) Pulse withstanding—specified for the EP1WS100RJ but not listed for the KNP100JR-52-100R; (4) Temperature coefficient—specified for the EP1WS100RJ (±300ppm/°C) but not provided for the KNP100JR-52-100R.

Q: Are both parts RoHS3 compliant?

A: Yes, both the EP1WS100RJ and KNP100JR-52-100R are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which part should be selected for high-temperature applications?

A: The KNP100JR-52-100R supports operating temperatures up to 200°C, compared to 155°C for the EP1WS100RJ. For applications requiring operation above 155°C, the KNP100JR-52-100R is the appropriate selection.

Q: Does the size difference affect electrical performance?

A: No. The larger physical dimensions of the KNP100JR-52-100R do not affect electrical performance. Both parts deliver identical resistance, tolerance, and power dissipation characteristics. Size differences are relevant only for PCB layout and mechanical integration.

Q: What is the significance of pulse withstanding in the EP1WS100RJ?

A: Pulse withstanding indicates the component can tolerate transient overvoltage events without failure. This feature is specified for the EP1WS100RJ but not documented for the KNP100JR-52-100R. Applications subject to voltage spikes or transient conditions should retain the EP1WS100RJ unless the substitute part is confirmed suitable through application-specific analysis.