HS50 250R F Equivalent & Substitute Parts

Part Overview

The HS50 250R F is a 250 Ohms ±1% 50W wirewound chassis mount resistor manufactured by Ohmite in the ARCOL HS series. This component is designed for applications requiring precision power dissipation with aluminum housing and flanged mounting. The part maintains Active product status with full RoHS3 compliance and REACH unaffected certification. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application-specific requirements where alternative electrical or mechanical characteristics may be acceptable.

Substiute Parts

HS50 250R F

OhmiteIn Stock: 1160HS50 250R F Datasheet

Current PartRFQ

850NF250E

OhmiteIn Stock: 996850NF250E Datasheet

Parametric EquivalentRFQ

HS25 250R F

OhmiteIn Stock: 789HS25 250R F Datasheet

Parametric EquivalentRFQ

HS50 250R F

ARCOLIn Stock: 1155HS50 250R F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HS50 250R F is determined by matching core electrical parameters: resistance value (250 Ohms), tolerance (±1%), and composition (wirewound). The following substitute parts meet these criteria:

850NF250E (Ohmite Metal-Mite®89 Series): Matches resistance, tolerance, and power rating. Differs in temperature coefficient (±20ppm/°C vs. ±100ppm/°C) and physical dimensions. Suitable where lower temperature coefficient performance is required.

HS25 250R F (Ohmite ARCOL HS Series): Matches resistance, tolerance, and series family. Differs in power rating (25W vs. 50W). Suitable for lower power dissipation applications within the same product line.

HS50 250R F (ARCOL Manufacturer Variant): Identical electrical specifications and power rating. Differs in manufacturer designation (ARCOL vs. Ohmite) and physical dimensions. Suitable as direct functional equivalent with pulse withstanding capability.

Parameter Comparison

Engineering Selection Recommendations

850NF250E Selection: Choose this substitute when thermal stability is critical. The ±20ppm/°C temperature coefficient provides superior performance compared to the ±100ppm/°C specification of the primary part. Both parts maintain 50W power rating and identical resistance/tolerance. Verify RoHS compliance requirements for your application, as this part's RoHS status is not specified.

HS25 250R F Selection: Select this substitute only when application power dissipation requirements do not exceed 25W. This part shares the same ARCOL HS series family, RoHS3 compliance, and identical electrical specifications. Physical dimensions are reduced compared to the 50W variant.

HS50 250R F (ARCOL) Selection: This variant is functionally equivalent with identical 50W power rating and electrical specifications. The ARCOL manufacturer designation and pulse withstanding feature provide additional capability. RoHS compliance is confirmed. Physical dimensions differ slightly (49.10mm x 28.00mm vs. 49.10mm x 14.20mm width).

Frequently Asked Questions (FAQ)

Q: Can HS25 250R F replace HS50 250R F in all applications? A: No. The HS25 250R F is rated for 25W maximum power dissipation. Use this substitute only when your circuit dissipates 25W or less. Exceeding this rating will cause component failure.

Q: What is the primary difference between 850NF250E and HS50 250R F? A: Both parts deliver 50W at 250 Ohms ±1%. The 850NF250E features a superior temperature coefficient of ±20ppm/°C compared to ±100ppm/°C in the HS50 250R F. Physical dimensions also differ. Select 850NF250E for applications requiring tighter temperature stability.

Q: Are all substitute parts RoHS compliant? A: HS50 250R F (Ohmite) and HS25 250R F are RoHS3 compliant. HS50 250R F (ARCOL) is RoHS compliant. The 850NF250E RoHS status is not specified in available documentation.

Q: Do substitute parts use the same mounting configuration? A: All substitute parts feature aluminum housing with flanged mounting and solder lugs. Physical dimensions vary. Verify mounting hole spacing and clearance requirements for your specific PCB layout before substitution.

Q: Which substitute offers the best thermal performance? A: The 850NF250E Metal-Mite®89 series provides the lowest temperature coefficient at ±20ppm/°C, compared to ±100ppm/°C for both ARCOL HS variants. Select this part for applications requiring minimal resistance drift across operating temperature ranges.