RL0809-682-R Equivalent & Substitute Parts

Part Overview

The RL0809-682-R is a 6.8 mH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This through-hole radial component is rated for 123 mA continuous current with a maximum DC resistance of 17.3 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

RL0809-682-R

Eaton - Electronics DivisionIn Stock: 924RL0809-682-R Datasheet

Current PartRFQ

RLB0913-682K

Bourns Inc.In Stock: 1202RLB0913-682K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RL0809-682-R is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 6.8 mH with ±10% tolerance
• Core type: Ferrite drum core, unshielded
• Mounting configuration: Through-hole radial, vertical cylinder orientation
• Current rating: Minimum 123 mA continuous current capability
• DC resistance: Within acceptable operating limits for the application
• Operating temperature range: Support for -40°C to 125°C minimum

Secondary Compatibility Factors:

• Package/case dimensions: Radial vertical cylinder form factor
• Moisture sensitivity level: MSL 1 or equivalent
• Self-resonant frequency characteristics within acceptable bandwidth

The RLB0913-682K from Bourns Inc. meets these substitution criteria as an active product with matching inductance, core material, shielding configuration, and mounting type.

Parameter Comparison

Engineering Selection Recommendations

The RLB0913-682K is the designated substitute for the obsolete RL0809-682-R based on the following engineering factors:

Product Status Alignment: The RLB0913-682K is an active product with full manufacturing support, addressing the obsolescence status of the original component.

Electrical Compatibility: Both inductors share identical inductance values (6.8 mH) and tolerance specifications (±10%). The RLB0913-682K provides a higher current rating (135 mA versus 123 mA), ensuring adequate performance margin. The DC resistance differential (19 Ohm versus 17.3 Ohm maximum) represents a 1.7 Ohm increase, which must be evaluated within the specific circuit application.

Mechanical Compatibility: Both components utilize identical mounting types (through-hole) and package configurations (radial, vertical cylinder). Physical dimensions differ slightly, with the RLB0913-682K measuring 0.335" diameter and 0.492" height compared to 0.311" diameter and 0.354" height for the original part. PCB layout verification is required to confirm fit within existing footprints.

Environmental Compliance: The RLB0913-682K is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements. The extended operating temperature range (-55°C to 125°C) provides additional environmental margin beyond the original specification.

Frequently Asked Questions (FAQ)

Q: Can the RLB0913-682K directly replace the RL0809-682-R without circuit modifications?

A: Both components share the same inductance value (6.8 mH) and tolerance (±10%), ferrite core material, unshielded configuration, and through-hole radial mounting. However, the 1.7 Ohm increase in DC resistance and dimensional differences require verification of circuit performance and PCB layout compatibility before implementation.

Q: What is the significance of the current rating difference between these inductors?

A: The RL0809-682-R is rated for 123 mA continuous current, while the RLB0913-682K is rated for 135 mA. The higher rating of the substitute provides a 12 mA margin above the original specification, indicating improved thermal performance and saturation characteristics for the same inductance value.

Q: How do the physical dimensions affect substitution?

A: The RLB0913-682K is larger in both diameter (0.335" versus 0.311") and height (0.492" versus 0.354"). PCB layout must accommodate these dimensional increases. Existing through-hole footprints may require adjustment or verification to ensure proper component seating and clearance.

Q: Are there compliance or certification differences between these parts?

A: The RLB0913-682K carries RoHS3 compliance and REACH unaffected status, meeting current regulatory standards. The RL0809-682-R, as an obsolete Eaton component, may not carry equivalent modern certifications. Both components are classified under ECCN EAR99 for export control purposes.

Q: What is the impact of the self-resonant frequency difference?

A: The RL0809-682-R has a self-resonant frequency of 690 kHz, while the RLB0913-682K is specified at 400 kHz. This difference reflects variations in internal construction and parasitic capacitance. Circuit applications operating near these frequency ranges require evaluation to ensure the substitute does not introduce unintended resonance effects.

Q: Can the RLB0913-682K be used in applications requiring the -40°C to 125°C temperature range?

A: Yes. The RLB0913-682K supports an extended temperature range of -55°C to 125°C, which encompasses the original -40°C to 125°C specification. The substitute provides additional margin for low-temperature operation.