HS250 R68 F Equivalent & Substitute Parts

Part Overview

The HS250 R68 F is a 250-watt wirewound chassis mount resistor manufactured by Ohmite, rated at 680 mOhms with ±1% tolerance. This component is designed for high-power applications requiring pulse withstanding capability and thermal stability. The part is currently in active production status with RoHS compliance certification. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility can be maintained within the allowed parameter ranges for this resistor category.

Substiute Parts

HS250 R68 F

OhmiteIn Stock: 739HS250 R68 F Datasheet

Current PartRFQ

HS200 R68 F

ARCOLIn Stock: 750HS200 R68 F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HS250 R68 F is determined by the following critical parameters:

Electrical Parameters (Must Match):

• Resistance value: 680 mOhms
• Tolerance: ±1%
• Composition: Wirewound

Mechanical Parameters (Must Match):

• Housing type: Aluminum
• Mounting feature: Flanges
• Lead style: M6 Threaded

Compliance Parameters (Must Match):

• RoHS Status: Compliant

Allowable Variation:

• Power rating may be lower than the main part (250W) provided the substitute meets minimum circuit requirements
• Temperature coefficient tolerance: ±100 ppm/°C is acceptable
• Physical dimensions may vary within standard chassis mount resistor envelope

The HS200 R68 F qualifies as a parametric equivalent because it maintains identical electrical specifications (680 mOhms, ±1% tolerance, wirewound construction), identical mechanical mounting characteristics (aluminum housing, flanges, M6 threaded leads), and equivalent compliance certifications (RoHS compliant). The reduced power rating (200W versus 250W) represents a functional limitation that must be evaluated against circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

HS250 R68 F (Primary Selection): Select the HS250 R68 F when circuit design requires the full 250-watt power dissipation capacity. This part is in active production status with confirmed RoHS compliance and unlimited moisture sensitivity rating, suitable for industrial and high-reliability applications.

HS200 R68 F (Substitute Selection): The HS200 R68 F may be selected as a substitute when circuit analysis confirms that maximum power dissipation does not exceed 200 watts. This part maintains identical electrical specifications, mechanical mounting compatibility, and compliance certifications. Both parts are in active production status. The substitute is available in bulk packaging, which may affect procurement logistics compared to the main part's box packaging.

Selection between these parts must be based on verified circuit power requirements and thermal management design parameters specific to the application.

Frequently Asked Questions (FAQ)

Q: Can HS200 R68 F replace HS250 R68 F in any application?

A: The HS200 R68 F is electrically and mechanically compatible with the HS250 R68 F only when circuit power dissipation does not exceed 200 watts. The reduced power rating is the limiting factor for substitution eligibility.

Q: Are the physical dimensions compatible between these parts?

A: Both parts feature M6 threaded leads and aluminum flanged housings. The HS250 R68 F measures 4.319" L × 2.854" W × 1.646" H (seated). The HS200 R68 F measures 4.631" L × 1.791" W × 1.646" H (seated). Height is identical; length and width differ. Mechanical mounting compatibility must be confirmed for the specific application.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the HS250 R68 F and HS200 R68 F are RoHS compliant, carry MSL rating 1 (unlimited), and share identical ECCN (EAR99) and HTSUS (8533.29.0000) classifications.

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

A: The HS250 R68 F is supplied in box packaging. The HS200 R68 F is supplied in bulk packaging. Packaging format may affect inventory management and procurement procedures.

Q: Are the temperature coefficients identical?

A: The HS250 R68 F specifies 100 ppm/°C. The HS200 R68 F specifies ±100 ppm/°C. Both values fall within equivalent thermal stability ranges for this resistor category and do not affect substitution eligibility.