HS300 47R F Equivalent & Substitute Parts

Part Overview

The HS300 47R F is a 300-watt wirewound chassis mount resistor manufactured by Ohmite, rated at 47 ohms with ±1% tolerance. This component is designed for high-power applications requiring reliable thermal dissipation and mechanical stability through flanged mounting. The part is currently in active production status with full RoHS compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility can be maintained while accommodating different power ratings or packaging requirements.

Substiute Parts

HS300 47R F

OhmiteIn Stock: 1040HS300 47R F Datasheet

Current PartRFQ

HS250 47R F

OhmiteIn Stock: 1067HS250 47R F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The HS250 47R F qualifies as a parametric equivalent based on the following criteria:

• Identical resistance value: 47 Ohms
• Identical tolerance: ±1%
• Identical composition: Wirewound
• Identical housing type: Aluminum
• Identical mounting feature: Flanges
• Identical lead style: M6 Threaded
• Identical temperature coefficient specification: ±100ppm/°C
• Identical ECCN and HTSUS classifications

The primary difference is the power rating: 250W versus 300W. This substitution is valid when the application circuit operates within the 250W thermal envelope. The substitute part maintains all critical electrical and mechanical parameters required for interchangeability in compatible applications.

Parameter Comparison

Engineering Selection Recommendations

Both the HS300 47R F and HS250 47R F are active production components with current regulatory compliance. The HS300 47R F is the primary specification for applications requiring the full 300-watt thermal capacity. The HS250 47R F substitute is applicable when circuit design operates within 250-watt power dissipation limits. Both parts maintain identical electrical performance characteristics and mechanical mounting interfaces. Selection between these parts is determined solely by the maximum power dissipation requirement of the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the HS250 47R F replace the HS300 47R F in all applications?

A: The HS250 47R F is electrically and mechanically compatible with the HS300 47R F only when the application circuit dissipates 250 watts or less. If the circuit requires sustained operation above 250 watts, the HS300 47R F must be used.

Q: Are the physical dimensions compatible between these parts?

A: Both parts share identical height specifications (1.646" / 41.80mm) and identical M6 threaded lead styles. The HS250 47R F has a smaller length and width footprint (4.319" L x 1.791" W versus 5.028" L x 2.854" W), which may affect mounting hole spacing in some chassis designs.

Q: What is the difference in packaging between these parts?

A: The HS300 47R F is supplied in box packaging, while the HS250 47R F is supplied in bulk packaging. This affects order quantities and handling but does not impact electrical or mechanical performance.

Q: Do both parts meet current compliance standards?

A: Yes. The HS300 47R F carries RoHS Compliant certification, and the HS250 47R F carries ROHS3 Compliant certification. Both parts are classified as EAR99 and share the same HTSUS code (8533.29.0000).

Q: What is the temperature coefficient specification for these resistors?

A: The HS300 47R F specifies 100ppm/°C, while the HS250 47R F specifies ±100ppm/°C. Both values represent equivalent temperature stability performance for this resistor class.