FPA2K 5R K Equivalent & Substitute Parts

Part Overview

The FPA2K 5R K is a 2000W thick film chassis mount resistor manufactured by Ohmite, rated at 5 Ohms with ±10% tolerance. This component is designed for high-power applications requiring robust thermal dissipation and mechanical stability through flanged mounting. The part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility exist within the same product family, enabling component sourcing flexibility while maintaining circuit performance requirements.

Substiute Parts

FPA2K 5R K

OhmiteIn Stock: 687FPA2K 5R K Datasheet

Current PartRFQ

TAP600K5R0E

OhmiteIn Stock: 871TAP600K5R0E Datasheet

Parametric EquivalentRFQ

TAP800K5R0E

OhmiteIn Stock: 1184TAP800K5R0E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FPA2K 5R K are identified based on strict electrical and mechanical parameter alignment. The substitution criteria are:

Electrical Parameters (Must Match):

• Resistance value: 5 Ohms
• Tolerance: ±10%
• Composition: Thick Film
• Temperature Coefficient: ±150ppm/°C
• Operating Temperature Range: -55°C ~ 150°C

Mechanical Parameters (Must Match):

• Mounting Feature: Flanges
• Lead Style: M5 Threaded
• Size / Dimension: 2.559" L x 2.362" W (65.00mm x 60.00mm)
• Height - Seated (Max): 1.280" (32.50mm)

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The identified substitutes differ only in power rating, which is a derating consideration. TAP600K5R0E and TAP800K5R0E are lower-power variants within the same mechanical and electrical family, suitable for applications with reduced thermal load requirements.

Parameter Comparison

Engineering Selection Recommendations

All three components—FPA2K 5R K, TAP600K5R0E, and TAP800K5R0E—maintain Active product status and full ROHS3 compliance with REACH Unaffected designation. Selection between these parts is determined by circuit power dissipation requirements:

FPA2K 5R K (2000W): Primary selection for applications requiring full 2000W continuous power dissipation at 5 Ohms resistance.

TAP800K5R0E (800W): Suitable for applications with power dissipation up to 800W. Identical electrical and mechanical specifications enable direct substitution in circuits with reduced thermal load.

TAP600K5R0E (600W): Suitable for applications with power dissipation up to 600W. Identical electrical and mechanical specifications enable direct substitution in circuits with further reduced thermal load.

All parts share identical resistance, tolerance, temperature coefficient, operating temperature range, mounting configuration, and physical dimensions. Substitution is valid only when the application's actual power dissipation does not exceed the substitute part's power rating.

Frequently Asked Questions (FAQ)

Q: Can TAP800K5R0E or TAP600K5R0E be used as direct replacements for FPA2K 5R K?

A: Direct replacement is valid only if the circuit's actual power dissipation does not exceed the substitute part's power rating. Both substitute parts share identical electrical specifications (5 Ohms, ±10%, ±150ppm/°C, -55°C ~ 150°C) and mechanical configuration (M5 threaded flanges, 65mm x 60mm x 32.5mm). If the application requires 2000W dissipation, only FPA2K 5R K is suitable.

Q: Are the physical dimensions identical across all three parts?

A: Yes. FPA2K 5R K, TAP800K5R0E, and TAP600K5R0E all measure 2.559" L x 2.362" W (65.00mm x 60.00mm) with a maximum seated height of 1.280" (32.50mm). All use M5 threaded leads and flanged mounting.

Q: What is the only difference between these three resistors?

A: Power rating is the sole difference. FPA2K 5R K is rated 2000W, TAP800K5R0E is rated 800W, and TAP600K5R0E is rated 600W. All other electrical and mechanical parameters are identical.

Q: Are all three parts ROHS3 compliant?

A: Yes. FPA2K 5R K, TAP800K5R0E, and TAP600K5R0E are all ROHS3 compliant with REACH Unaffected status.

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

A: All three parts have a temperature coefficient of ±150ppm/°C with an operating temperature range of -55°C to 150°C.

Q: Can I use a lower-power substitute if my circuit only dissipates 500W?

A: Yes. If actual circuit power dissipation is 500W, TAP600K5R0E (600W rating) is suitable. Both TAP600K5R0E and TAP800K5R0E are valid selections for applications with power dissipation below their respective ratings.