Bourns 5800-681 680µH Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5800-681 is a 680 µH unshielded drum core wirewound inductor rated for 300 mA with a maximum DC resistance of 1.7 Ohm. This component operates across the temperature range of -55°C to 105°C and is mounted through-hole in an axial package configuration. The part is currently listed as obsolete, making identification of suitable equivalent and substitute components essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Inductance	680 µH
Current Rating	300 mA
DC Resistance (Max)	1.7 Ohm
Tolerance	±10%
Core Material	Ferrite
Shielding	Unshielded
Mounting Type	Through Hole
Package	Axial
Operating Temperature	-55°C to 105°C
Size	0.275" Dia x 0.700" L (6.99mm x 17.78mm)

Substitute Part Grouping Explanation

Substitution for the Bourns 5800-681 is determined by strict alignment of electrical and mechanical parameters. The critical substitution criteria are:

Inductance Value: Must be 680 µH
Current Rating: Must support minimum 300 mA operation
DC Resistance: Must not exceed 1.7 Ohm maximum
Core Material: Ferrite core construction
Shielding: Unshielded configuration
Mounting: Through-hole axial package
Temperature Range: Must cover -55°C to 105°C minimum

Two substitute parts meet these criteria with varying degrees of parameter alignment:

Direct Equivalent (5800-681-RC): Identical electrical specifications with improved product status and compliance.

Similar Substitute (2474-35L): Matches core inductance and mounting but presents variations in current rating, DC resistance, and tolerance that require engineering evaluation for specific circuit applications.

Parameter Comparison

Parameter	5800-681 (Main)	5800-681-RC (Direct)	2474-35L (Similar)
Manufacturer	Bourns Inc.	Bourns Inc.	API Delevan Inc.
Inductance	680 µH	680 µH	680 µH
Tolerance	±10%	±10%	±15%
Current Rating	300 mA	300 mA	490 mA
Current - Saturation	400 mA	400 mA	250 mA
DC Resistance (Max)	1.7 Ohm	1.7 Ohm	1.5 Ohm
Core Type	Drum Core, Wirewound	Drum Core, Wirewound	Molded
Shielding	Unshielded	Unshielded	Unshielded
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 125°C
Size	0.275" Dia x 0.700" L	0.275" Dia x 0.700" L	0.240" Dia x 0.740" L
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	Non-compliant
Packaging	Bulk	Tray	Bulk

Engineering Selection Recommendations

5800-681-RC (Direct Equivalent - Preferred)

The Bourns 5800-681-RC is the primary substitute for the obsolete 5800-681. This part maintains identical electrical specifications including 680 µH inductance, 300 mA current rating, and 1.7 Ohm maximum DC resistance. The 5800-681-RC is currently in active production status with ROHS3 compliance certification, providing regulatory alignment for new designs and manufacturing continuity. Physical dimensions and mounting configuration are identical, enabling direct board-level substitution without layout modification.

2474-35L (Similar Substitute - Conditional)

The API Delevan 2474-35L provides an alternative 680 µH unshielded axial inductor with enhanced current handling capability (490 mA rating) and lower DC resistance (1.5 Ohm maximum). However, this part introduces the following parameter variations: wider inductance tolerance (±15% versus ±10%), lower saturation current (250 mA versus 400 mA), and slightly different physical dimensions (0.240" Dia x 0.740" L). The extended operating temperature range (-55°C to 125°C) exceeds the original specification. Selection of this part requires circuit-level analysis to confirm compatibility with the application's current and saturation requirements.

Frequently Asked Questions (FAQ)

Q: Can the 5800-681-RC be used as a direct replacement for the 5800-681?

A: Yes. The 5800-681-RC maintains identical electrical and mechanical specifications. The primary advantage is active production status and ROHS3 compliance. Physical dimensions and mounting are unchanged, allowing direct substitution on existing PCB layouts.

Q: What are the key differences between the 5800-681-RC and 2474-35L?

A: Both parts share the same 680 µH inductance value and unshielded axial configuration. The 5800-681-RC is a direct Bourns equivalent with ±10% tolerance and 300 mA rating. The 2474-35L is a different manufacturer design with ±15% tolerance, higher current rating (490 mA), lower DC resistance (1.5 Ohm), and lower saturation current (250 mA). The 2474-35L also has slightly different physical dimensions.

Q: Is the 2474-35L compatible with circuits designed for the 5800-681?

A: Electrical compatibility depends on circuit requirements. The 2474-35L's lower saturation current (250 mA) may limit performance in applications where the original 400 mA saturation specification is critical. The wider inductance tolerance (±15%) may affect frequency-dependent circuit behavior. Physical dimensions differ slightly, requiring PCB layout verification before implementation.

Q: What compliance certifications apply to each part?

A: The 5800-681-RC carries ROHS3 compliance certification. Both the original 5800-681 and the 2474-35L are RoHS non-compliant. All three parts are REACH unaffected and classified under ECCN EAR99.

Q: Are there packaging considerations for these substitutes?

A: The 5800-681-RC is supplied in tray packaging, while both the 5800-681 and 2474-35L are supplied in bulk packaging. Packaging format may affect procurement, handling, and inventory management workflows.

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