Bourns 5712 150µH Toroidal Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 5712 is a 150µH unshielded toroidal inductor rated for 4.75A continuous current with a maximum DC resistance of 46mOhm. This through-hole component features an iron powder core and operates across the temperature range of -55°C to 105°C. The 5712 is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Inductance	150 µH
Inductance Tolerance	±15%
Current Rating	4.75 A
DC Resistance (Max)	46 mOhm
Core Material	Iron Powder
Shielding	Unshielded
Mounting Type	Through Hole
Package Type	Radial, Vertical (Open)
Operating Temperature Range	-55°C to 105°C
Test Frequency	1 kHz

Substitute Part Grouping Explanation

The Bourns 5712-RC serves as the direct active equivalent to the obsolete 5712. Substitution is valid based on the following matched electrical and mechanical parameters:

Inductance value: 150 µH with ±15% tolerance
Current rating: 4.75 A
DC resistance: 46 mOhm maximum
Core material: Iron powder
Shielding configuration: Unshielded
Mounting method: Through hole
Package style: Radial, vertical (open)
Operating temperature range: -55°C to 105°C
Test frequency: 1 kHz

The 5712-RC maintains electrical equivalence while offering improved compliance status and active product availability.

Parameter Comparison

Parameter	Bourns 5712 (Obsolete)	Bourns 5712-RC (Active)
Inductance	150 µH	150 µH
Inductance Tolerance	±15%	±15%
Current Rating (Amps)	4.75 A	4.75 A
DC Resistance (Max)	46 mOhm	46 mOhm
Core Material	Iron Powder	Iron Powder
Shielding	Unshielded	Unshielded
Mounting Type	Through Hole	Through Hole
Package Type	Radial, Vertical (Open)	Radial, Vertical (Open)
Operating Temperature	-55°C to 105°C	-55°C to 105°C
Test Frequency	1 kHz	1 kHz
Product Status	Obsolete	Active
RoHS Compliance	Non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The Bourns 5712-RC is the appropriate selection for applications currently using the 5712. Both parts maintain identical electrical specifications and mechanical form factors. The 5712-RC offers the advantage of active product status, ensuring continued availability and supply chain reliability. Additionally, the 5712-RC meets ROHS3 compliance requirements, whereas the original 5712 does not. For new designs or component refresh cycles, the 5712-RC provides regulatory alignment and long-term procurement viability.

Frequently Asked Questions (FAQ)

Q: Can the 5712-RC be used as a direct replacement for the 5712?

A: Yes. The 5712-RC is electrically and mechanically equivalent to the 5712 across all specified parameters, including inductance, current rating, DC resistance, core material, and package configuration.

Q: What is the primary reason to transition from the 5712 to the 5712-RC?

A: The 5712 is classified as obsolete, creating procurement risk. The 5712-RC is an active product with confirmed inventory availability. Additionally, the 5712-RC meets ROHS3 compliance standards.

Q: Are there physical dimension differences between these parts?

A: The 5712 has a case dimension of 0.875" diameter × 0.437" width (22.22mm × 11.10mm). The 5712-RC has a case dimension of 1.250" diameter × 0.625" width (31.75mm × 15.88mm). Both maintain the same radial, vertical (open) package style and through-hole mounting configuration. Physical layout verification is required for PCB compatibility.

Q: Do both parts operate across the same temperature range?

A: Yes. Both the 5712 and 5712-RC operate from -55°C to 105°C.

Q: What packaging options are available for the 5712-RC?

A: The 5712-RC is supplied in bulk packaging, whereas the original 5712 packaging format is not specified in the available data.

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