HS300 150R F Equivalent & Substitute Parts

Part Overview

The HS300 150R F is a 300-watt wirewound chassis mount resistor manufactured by Ohmite, rated at 150 ohms with ±1% tolerance. This component is designed for high-power applications requiring stable resistance performance in aluminum-housed configurations with flanged mounting. The part is currently active in production with 798 units in stock. Substitute parts become necessary when application constraints require different power ratings, packaging configurations, or when primary inventory is unavailable while maintaining identical electrical specifications.

Substiute Parts

HS300 150R F

OhmiteIn Stock: 871HS300 150R F Datasheet

Current PartRFQ

HS200 150R F

ARCOLIn Stock: 756HS200 150R F Datasheet

Parametric EquivalentRFQ

HS250 150R F

ARCOLIn Stock: 1138HS250 150R F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the HS300 150R F is determined by maintaining the following critical parameters: resistance value (150 ohms), tolerance (±1%), composition (wirewound), housing type (aluminum), mounting feature (flanges), and lead style (M6 threaded). The substitute parts HS200 150R F and HS250 150R F meet these core electrical and mechanical requirements. Substitution is valid when power rating requirements permit operation at 200W or 250W respectively, as these lower ratings represent reduced thermal dissipation capacity compared to the primary 300W specification. Both substitutes maintain identical resistance, tolerance, temperature coefficient range, and physical mounting interfaces.

Parameter Comparison

Engineering Selection Recommendations

Selection between HS300 150R F and its substitutes depends on circuit power dissipation requirements. The HS300 150R F provides maximum thermal capacity at 300W and is the primary choice for applications operating near or at this power level. The HS250 150R F offers 250W capacity and maintains ROHS3 compliance, suitable for applications with moderate power dissipation. The HS200 150R F provides 200W capacity with RoHS compliance, appropriate for lower-power applications. All three parts maintain identical electrical specifications (150 ohms, ±1% tolerance) and mechanical interfaces (M6 threaded flanged mounting on aluminum housing), ensuring direct substitution when power rating constraints are satisfied. Component selection should be based on actual circuit power dissipation to ensure thermal margin and long-term reliability.

Frequently Asked Questions (FAQ)

Q: Can HS200 150R F or HS250 150R F be used in place of HS300 150R F?

A: Yes, provided the application power dissipation does not exceed the substitute part's rating. HS250 150R F supports up to 250W; HS200 150R F supports up to 200W. Operating above these ratings will cause thermal failure.

Q: Are the physical dimensions compatible between these parts?

A: All three parts share identical height (1.646" seated maximum) and identical M6 threaded lead style. Length and width vary: HS300 is 5.028" L × 2.854" W; HS250 is 4.319" L × 1.791" W; HS200 is 4.631" L × 1.791" W. Mounting interface compatibility is maintained through flanged design.

Q: What is the difference in temperature coefficient between the main part and substitutes?

A: HS300 150R F specifies 100ppm/°C; both HS200 150R F and HS250 150R F specify ±100ppm/°C. This represents equivalent temperature stability performance.

Q: Are all parts RoHS compliant?

A: HS300 150R F and HS200 150R F are RoHS Compliant. HS250 150R F is ROHS3 Compliant, representing an updated compliance standard.

Q: What packaging differences exist?

A: HS300 150R F is supplied in Box packaging. Both HS200 150R F and HS250 150R F are supplied in Bulk packaging. This affects handling and storage but does not impact electrical or mechanical performance.