RT0805FRE0721RL Equivalent & Substitute Parts

Part Overview

The RT0805FRE0721RL is a 21 Ohm ±1% thin film chip resistor in 0805 (2012 Metric) package manufactured by YAGEO. This surface mount device is rated for 0.125W (1/8W) power dissipation with an operating temperature range of -55°C to 155°C. The component is ROHS3 compliant and carries MSL Level 1 (Unlimited) moisture sensitivity rating. As an active product with current inventory availability, equivalent and substitute parts may be required for supply chain optimization, design flexibility, or performance enhancement in specific applications.

Substiute Parts

RT0805FRE0721RL

YAGEOIn Stock: 719RT0805FRE0721RL Datasheet

Current PartRFQ

5-1625868-8

TE Connectivity Passive ProductIn Stock: 33035-1625868-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT0805FRE0721RL is determined by the following critical parameters:

• Resistance Value: Must be 21 Ohms
• Package / Case: Must be 0805 (2012 Metric) for mechanical and electrical compatibility
• Composition: Thin film construction ensures consistent performance characteristics
• Operating Temperature Range: Must support -55°C ~ 155°C minimum
• RoHS Compliance: ROHS3 compliance required for regulatory alignment
• Moisture Sensitivity Level: MSL 1 (Unlimited) acceptable

The substitute part 5-1625868-8 (TE Connectivity Passive Product) meets all mandatory substitution criteria. While this part offers enhanced tolerance (±0.1% vs ±1%) and higher power rating (0.25W vs 0.125W), these represent performance improvements rather than deviations from the core electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the RT0805FRE0721RL and 5-1625868-8 are active products with ROHS3 compliance and MSL Level 1 ratings, confirming regulatory and environmental suitability for equivalent application. The substitute part 5-1625868-8 provides tighter tolerance specification (±0.1% vs ±1%) and higher power dissipation capability (0.25W vs 0.125W) while maintaining identical package geometry and operating temperature range. Selection between these parts should be based on application-specific requirements for tolerance precision and thermal headroom. Both components are suitable for direct substitution in circuits where the RT0805FRE0721RL is currently specified.

Frequently Asked Questions (FAQ)

Q: Can 5-1625868-8 be used as a direct replacement for RT0805FRE0721RL?

A: Yes. Both parts share identical resistance value (21 Ohms), package type (0805), composition (thin film), operating temperature range (-55°C ~ 155°C), and regulatory compliance (ROHS3, MSL 1). The substitute part meets or exceeds all electrical and mechanical requirements.

Q: What are the differences between these two parts?

A: The primary differences are tolerance (±0.1% vs ±1%), power rating (0.25W vs 0.125W), temperature coefficient (±25ppm/°C vs ±50ppm/°C), and maximum seated height (0.026" vs 0.024"). These represent performance enhancements in the substitute part.

Q: Will the substitute part fit in the same PCB footprint?

A: Yes. Both parts use the 0805 (2012 Metric) package with identical length and width dimensions (0.079" x 0.049" / 2.00mm x 1.25mm). The maximum seated height difference (0.002" / 0.05mm) is negligible for standard PCB assembly.

Q: Are both parts currently available?

A: Yes. RT0805FRE0721RL has 680 pieces in stock, and 5-1625868-8 has 3243 pieces in stock as new original inventory.

Q: What does the tolerance difference mean for circuit performance?

A: Tolerance specifies the maximum deviation from the nominal 21 Ohm value. The ±0.1% tolerance of 5-1625868-8 provides tighter resistance accuracy compared to the ±1% tolerance of RT0805FRE0721RL, beneficial for precision analog circuits or applications requiring strict impedance control.