HS50 4R7 F Equivalent & Substitute Parts

Part Overview

The HS50 4R7 F is a 50-watt wirewound chassis mount resistor manufactured by Ohmite, featuring 4.7 ohms resistance with ±1% tolerance. This component is designed for applications requiring high power dissipation with stable electrical characteristics across operating conditions. The part maintains Active product status with full RoHS compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, inventory management, or component availability.

Substiute Parts

HS50 4R7 F

OhmiteIn Stock: 1066HS50 4R7 F Datasheet

Current PartRFQ

HS25 4R7 F

OhmiteIn Stock: 1150HS25 4R7 F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HS50 4R7 F is determined by strict equivalence across critical electrical parameters: resistance value (4.7 Ohms), tolerance (±1%), and composition (wirewound). The mechanical parameters—aluminum housing, flange mounting, and solder lug leads—must remain consistent to ensure form-fit-function compatibility in chassis mount applications.

The identified substitute, HS25 4R7 F, maintains electrical equivalence in resistance, tolerance, and composition. However, this substitute differs in power rating (25W versus 50W) and physical dimensions. This relationship is classified as a parametric equivalent rather than a direct drop-in replacement, as the reduced power rating restricts its application scope to circuits with lower thermal requirements.

Parameter Comparison

Engineering Selection Recommendations

Selection between HS50 4R7 F and HS25 4R7 F is determined by circuit power dissipation requirements. The HS50 4R7 F is specified for applications requiring 50-watt continuous power handling. The HS25 4R7 F is suitable only for circuits with maximum power dissipation not exceeding 25 watts.

Both components maintain Active product status and comply with RoHS regulations. The HS50 4R7 F carries RoHS Compliant certification with unlimited moisture sensitivity (MSL 1). The HS25 4R7 F carries ROHS3 Compliant certification. Physical dimensions differ significantly; the HS25 4R7 F occupies reduced board space due to smaller length and width dimensions, though seated height remains identical.

Frequently Asked Questions (FAQ)

Q: Can HS25 4R7 F replace HS50 4R7 F in all applications?

A: No. The HS25 4R7 F is rated for maximum 25-watt power dissipation. It is suitable only for circuits where power dissipation does not exceed 25 watts. Applications requiring 50-watt capability must use the HS50 4R7 F.

Q: Are the electrical characteristics identical between these parts?

A: Resistance (4.7 Ohms) and tolerance (±1%) are identical. Temperature coefficient specifications differ slightly: HS50 4R7 F is 100ppm/°C; HS25 4R7 F is ±100ppm/°C. Both are wirewound composition with aluminum housing.

Q: Do physical dimensions affect substitution?

A: Yes. The HS50 4R7 F measures 1.933" L × 1.102" W × 0.583" H (seated). The HS25 4R7 F measures 1.075" L × 0.559" W × 0.583" H (seated). Verify board layout and thermal management requirements before substitution.

Q: Are both parts RoHS compliant?

A: Yes. HS50 4R7 F is RoHS Compliant. HS25 4R7 F is ROHS3 Compliant. Both meet RoHS requirements for new designs.

Q: What is the primary difference between these parts?

A: Power rating is the primary differentiator. HS50 4R7 F handles 50 watts; HS25 4R7 F handles 25 watts. Physical size is secondary; the 25-watt version is more compact.