RN73C2A249RBTG Equivalent & Substitute Parts

Part Overview

The RN73C2A249RBTG is a 249 Ohm thin film chip resistor manufactured by TE Connectivity Passive Product, operating at 0.1W (1/10W) power rating in a 0805 (2012 Metric) surface mount package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required for design flexibility, supply chain optimization, or packaging format preferences while maintaining functional equivalence in circuit applications.

Substiute Parts

RN73C2A249RBTG

TE Connectivity Passive ProductIn Stock: 1055RN73C2A249RBTG Datasheet

Current PartRFQ

RG2012N-2490-B-T5

SusumuIn Stock: 5536RG2012N-2490-B-T5 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN73C2A249RBTG is permissible when the following criteria are met:

Critical Matching Parameters:

• Resistance value: 249 Ohms (exact match required)
• Tolerance: ±0.1% (exact match required)
• Temperature Coefficient: ±10ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Composition: Thin Film (exact match required)

Allowable Variation Parameters:

• Power Rating: Substitute parts may have equal or higher power rating than the main part
• Packaging Format: Strip or Tape & Reel (TR) formats are interchangeable for component selection purposes
• Height - Seated (Max): Variation permitted within mechanical assembly constraints

The substitute part RG2012N-2490-B-T5 meets all critical matching parameters and provides an upgraded power rating of 0.125W (1/8W), which exceeds the main part specification of 0.1W (1/10W).

Parameter Comparison

Engineering Selection Recommendations

RN73C2A249RBTG (TE Connectivity Passive Product)

This component is suitable for applications requiring a 249 Ohm thin film resistor with 0.1% tolerance and 0.1W power dissipation. The part maintains Active product status with full RoHS3 and REACH compliance. Selection of this part is appropriate when TE Connectivity supply chain integration or existing design qualification with this manufacturer is required.

RG2012N-2490-B-T5 (Susumu) - Substitute Option

This component provides functional equivalence with identical electrical specifications (249 Ohms, ±0.1% tolerance, ±10ppm/°C temperature coefficient, -55°C ~ 155°C operating range) and mechanical compatibility (0805 package, 2.00mm x 1.25mm dimensions). The substitute part features an upgraded power rating of 0.125W (1/8W), exceeding the main part specification. The RG2012N-2490-B-T5 includes Anti-Sulfur and Automotive AEC-Q200 certifications, indicating suitability for automotive and harsh environment applications. The substitute part maintains Active product status with RoHS3 and REACH compliance. The seated height is 0.020" (0.50mm), which is lower than the main part's 0.026" (0.65mm), providing improved mechanical clearance in compact assemblies.

Frequently Asked Questions (FAQ)

Q: Can RG2012N-2490-B-T5 be used as a direct replacement for RN73C2A249RBTG?

A: Yes. Both components share identical resistance (249 Ohms), tolerance (±0.1%), temperature coefficient (±10ppm/°C), operating temperature range (-55°C ~ 155°C), package format (0805 / 2012 Metric), and physical dimensions (0.079" L x 0.049" W). The substitute part provides an upgraded power rating of 0.125W versus the main part's 0.1W, which is functionally compatible for circuit applications.

Q: What is the difference in power rating between these parts?

A: The RN73C2A249RBTG is rated at 0.1W (1/10W), while the RG2012N-2490-B-T5 is rated at 0.125W (1/8W). The substitute part has a 25% higher power dissipation capability. In applications where the main part operates within its 0.1W specification, the substitute part will operate with additional thermal margin.

Q: Are there packaging format differences?

A: The main part is supplied in Strip packaging, while the substitute part is supplied in Tape & Reel (TR) format. Both formats contain the same component and are suitable for different assembly processes. Strip format is typical for manual or small-batch assembly, while Tape & Reel format is standard for automated pick-and-place assembly.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the RN73C2A249RBTG and RG2012N-2490-B-T5 are RoHS3 compliant and REACH unaffected. The substitute part additionally carries Automotive AEC-Q200 certification and Anti-Sulfur features, which provide enhanced reliability for automotive and corrosive environment applications.

Q: What is the physical height difference?

A: The RN73C2A249RBTG has a maximum seated height of 0.026" (0.65mm), while the RG2012N-2490-B-T5 has a maximum seated height of 0.020" (0.50mm). The substitute part is 0.006" (0.15mm) lower, which may provide improved clearance in space-constrained PCB designs.

Q: Are the electrical characteristics identical?

A: Yes. Both parts have identical resistance (249 Ohms), tolerance (±0.1%), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C ~ 155°C). Electrical performance in circuit applications is equivalent.

Q: Can I use the substitute part in automotive applications?

A: The RG2012N-2490-B-T5 carries Automotive AEC-Q200 certification, making it suitable for automotive applications. The main part RN73C2A249RBTG does not carry this certification. If automotive qualification is required, the substitute part is the appropriate selection.