RR02F249RTB Equivalent & Substitute Parts

Part Overview

The RR02F249RTB is a 249 Ohms ±1% 2W through-hole resistor manufactured by TE Connectivity Passive Product. This axial metal film resistor features flame retardant coating and pulse withstanding capability, designed for applications requiring precision resistance values with enhanced safety characteristics. The part maintains Active product status with 1634 units in current inventory stock. Substitute parts are identified to provide alternative sourcing options when the primary part becomes unavailable or when supply chain optimization is required.

Substiute Parts

RR02F249RTB

TE Connectivity Passive ProductIn Stock: 1724RR02F249RTB Datasheet

Current PartRFQ

FMP200FRF52-249R

YAGEOIn Stock: 5791FMP200FRF52-249R Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RR02F249RTB is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance Value: 249 Ohms
• Tolerance: ±1%
• Power Rating: 2W
• Composition: Metal Film
• Package Type: Axial
• Number of Terminations: 2
• RoHS Compliance: ROHS3 Compliant

The substitute part FMP200FRF52-249R meets all mandatory matching parameters. Both parts are metal film axial resistors with identical resistance, tolerance, and power specifications. Both maintain ROHS3 compliance and active product status, ensuring regulatory alignment and continued availability.

Parameter Comparison

Engineering Selection Recommendations

Both the RR02F249RTB and FMP200FRF52-249R are functionally equivalent for applications requiring 249 Ohm ±1% 2W metal film axial resistors. Selection between these parts should be based on the following engineering considerations:

RR02F249RTB (TE Connectivity): Select this part when applications require extended operating temperature capability up to 235°C or when the lower temperature coefficient of ±300ppm/°C is acceptable. The smaller physical diameter (3.50mm) may provide advantages in space-constrained PCB layouts.

FMP200FRF52-249R (YAGEO): Select this part when superior temperature stability is required, as the ±100ppm/°C temperature coefficient provides tighter performance across temperature variations. Higher inventory availability (5771 units) supports rapid procurement. The operating temperature range extends to 155°C, which is suitable for standard industrial and consumer applications.

Both parts maintain ROHS3 compliance and active product status, ensuring regulatory conformance and long-term supply chain viability. Selection should account for specific application temperature requirements and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can FMP200FRF52-249R be used as a direct replacement for RR02F249RTB?

A: Yes, FMP200FRF52-249R is functionally equivalent for applications operating within the -55°C to 155°C temperature range. Both parts share identical resistance (249 Ohms), tolerance (±1%), power rating (2W), composition (metal film), and package type (axial). Physical dimensions differ slightly; verify PCB layout compatibility before substitution.

Q: What are the key differences between these two parts?

A: The primary differences are temperature coefficient (±300ppm/°C vs. ±100ppm/°C), maximum operating temperature (235°C vs. 155°C), and physical diameter (3.50mm vs. 3.90mm). The RR02F249RTB offers extended temperature range; the FMP200FRF52-249R provides superior temperature stability.

Q: Are both parts RoHS compliant?

A: Yes, both RR02F249RTB and FMP200FRF52-249R are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What is the significance of the axial package type?

A: The axial package type indicates through-hole mounting with leads extending from opposite ends of the resistor body. Both parts use this configuration, ensuring compatibility with standard through-hole PCB assembly processes.

Q: How do the physical dimensions affect component selection?

A: The RR02F249RTB measures 3.50mm diameter; the FMP200FRF52-249R measures 3.90mm diameter. Both share 9.00mm length. In space-constrained applications, the smaller diameter of the RR02F249RTB may be preferred. Verify PCB hole spacing and component clearance requirements before final selection.

Q: What does the ±1% tolerance specification mean?

A: The ±1% tolerance indicates that the actual resistance value will fall within 246.51 Ohms to 251.49 Ohms. Both parts meet this specification, ensuring precision matching in applications requiring tight resistance control.

Q: Are these parts suitable for high-frequency applications?

A: Both parts are metal film resistors with axial configuration. Frequency suitability depends on specific circuit requirements and parasitic characteristics. Consult application-specific design guidelines for high-frequency performance validation.