RL895-333K Equivalent & Substitute Parts

Part Overview

The RL895-333K is a 33 mH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 48 mA maximum current with 64.2Ohm DC resistance. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The RL895 series represents through-hole radial mounting inductors suitable for general-purpose filtering and energy storage applications in electronic circuits.

Substiute Parts

RL895-333K

Bourns Inc.In Stock: 1178RL895-333K Datasheet

Current PartRFQ

RL622-333K-RC

Bourns Inc.In Stock: 3275RL622-333K-RC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RL895-333K is determined by the following critical parameters:

• Inductance Value: Must be 33 mH with ±10% tolerance
• Core Type: Ferrite drum core construction
• Shielding Configuration: Unshielded design
• Mounting Interface: Through-hole radial mounting
• Current Handling: Minimum 48 mA rating required
• DC Resistance: Maximum 64.2Ohm acceptable for circuit performance

The RL622-333K-RC qualifies as a substitute based on matching inductance, core material, shielding type, and mounting configuration. However, differences in current rating, DC resistance, and operating temperature range must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The RL622-333K-RC is an active product with ROHS3 compliance, providing regulatory advantage over the obsolete RL895-333K. The substitute maintains identical inductance and tolerance specifications with ferrite core construction and unshielded configuration.

Circuit designers must account for the following differences:

• Current rating reduced from 48 mA to 30 mA in the substitute
• DC resistance increased from 64.2Ohm to 70Ohm maximum
• Operating temperature range expanded to -55°C ~ 105°C in the substitute
• Packaging dimensions differ slightly between series

Selection of the RL622-333K-RC is appropriate for applications where the 30 mA current rating and 70Ohm resistance are within design tolerances. Applications requiring the full 48 mA rating or lower resistance characteristics may require alternative component evaluation.

Frequently Asked Questions (FAQ)

Q: Can the RL622-333K-RC directly replace the RL895-333K in existing designs?

A: Direct replacement is possible only if the circuit operates at or below 30 mA and tolerates the increased 70Ohm DC resistance. The matching inductance value and core type support functional equivalence within these electrical constraints.

Q: What are the physical dimension differences between these parts?

A: The RL895-333K measures 0.307" diameter (7.80mm) with 0.374" height (9.50mm). The RL622-333K-RC measures 0.335" diameter (8.50mm) with 0.433" height (11.00mm). PCB layout verification is required before substitution.

Q: Does the RL622-333K-RC meet RoHS requirements?

A: Yes, the RL622-333K-RC is ROHS3 compliant, whereas the RL895-333K is RoHS non-compliant. This represents a regulatory advantage for new product designs.

Q: How do the operating temperature ranges compare?

A: The RL895-333K operates from -30°C to 100°C. The RL622-333K-RC extends this range to -55°C to 105°C, providing broader environmental capability.

Q: What is the impact of increased DC resistance on circuit performance?

A: The 5.8Ohm increase in maximum DC resistance (from 64.2Ohm to 70Ohm) affects power dissipation and voltage drop across the inductor. Circuit analysis is required to confirm acceptable performance at the application's operating current.