RL0809-822-R Equivalent & Substitute Parts

Part Overview

The RL0809-822-R is an 8.2 mH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This through-hole radial component is rated for 106 mA continuous current with a maximum DC resistance of 23.1 Ohm and operates across the temperature range of -40°C to 125°C. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

RL0809-822-R

Eaton - Electronics DivisionIn Stock: 932RL0809-822-R Datasheet

Current PartRFQ

RLB9012-822KL

Bourns Inc.In Stock: 4992RLB9012-822KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RL0809-822-R is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Inductance value: 8.2 mH with ±10% tolerance
• Core type: Ferrite drum core, unshielded
• Mounting configuration: Through-hole radial, vertical cylinder orientation
• Package footprint compatibility: Physical dimensions must accommodate board layout constraints

Allowable Variation Parameters:

• Current rating: Substitute must equal or exceed 106 mA minimum
• DC resistance: Substitute must not exceed 23.1 Ohm maximum
• Operating temperature: Substitute must support minimum -40°C to 125°C range
• Self-resonant frequency: Substitute performance at application frequency must be verified against circuit requirements

The RLB9012-822KL meets these substitution criteria with superior current handling (180 mA versus 106 mA) and equivalent DC resistance (22.7 Ohm versus 23.1 Ohm maximum).

Parameter Comparison

Engineering Selection Recommendations

The RLB9012-822KL from Bourns Inc. is a direct functional substitute for the obsolete RL0809-822-R. Selection is supported by the following factors:

Electrical Equivalence: Both components deliver 8.2 mH inductance at ±10% tolerance with ferrite drum core construction. The RLB9012-822KL provides superior current handling capacity (180 mA versus 106 mA) and equivalent DC resistance performance (22.7 Ohm versus 23.1 Ohm maximum), ensuring no degradation in circuit performance.

Mechanical Compatibility: Both parts utilize identical through-hole radial mounting with vertical cylinder package geometry, supporting direct board layout substitution without redesign.

Environmental Performance: The RLB9012-822KL extends the lower operating temperature limit to -55°C, exceeding the original -40°C specification and providing enhanced thermal margin.

Compliance and Availability: The RLB9012-822KL is RoHS3 compliant and REACH unaffected, with active manufacturing status and substantial inventory availability (4900 pieces in stock), ensuring long-term supply continuity.

Self-Resonant Frequency Consideration: The RLB9012-822KL operates at 350 kHz self-resonant frequency compared to 670 kHz for the RL0809-822-R. Circuit operation frequency must be evaluated to confirm this parameter does not impact application performance.

Frequently Asked Questions (FAQ)

Q: Can the RLB9012-822KL directly replace the RL0809-822-R without circuit modification?

A: The RLB9012-822KL meets all critical electrical and mechanical substitution parameters. However, the difference in self-resonant frequency (350 kHz versus 670 kHz) requires verification that circuit operating frequency does not interact adversely with this characteristic. Physical dimensions differ slightly (0.354" diameter and 0.480" height versus 0.311" diameter and 0.354" height), requiring confirmation of board layout clearance.

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

A: The primary differences are: (1) Current rating—RLB9012-822KL rated for 180 mA versus 106 mA for RL0809-822-R; (2) Self-resonant frequency—350 kHz versus 670 kHz; (3) Physical size—RLB9012-822KL is larger; (4) Product status—RLB9012-822KL is active production while RL0809-822-R is obsolete. Inductance, tolerance, core material, and DC resistance are equivalent.

Q: Are there any compliance or certification differences?

A: The RLB9012-822KL carries RoHS3 compliance and REACH unaffected status. Both components share the same ECCN (EAR99) and HTSUS classification (8504.50.4000).

Q: What should be verified before implementing this substitution?

A: Confirm that (1) board layout accommodates the larger physical dimensions of the RLB9012-822KL; (2) circuit operating frequency does not create resonance issues at 350 kHz; (3) the enhanced current rating does not introduce unintended circuit behavior changes.

Q: Is the RLB9012-822KL available in the same packaging format?

A: The RLB9012-822KL is supplied in tray packaging, while the RL0809-822-R packaging format is not specified in available data. Both components are through-hole radial vertical cylinder packages suitable for standard PCB assembly processes.