PT12130SL Equivalent & Substitute Parts

Part Overview

The PT12130SL is a 4.7 mH unshielded wirewound inductor manufactured by Bourns Inc., rated for 50 mA maximum current with 18 Ohm maximum DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The PT121 series designation identifies this as a through-hole radial inductor suitable for general-purpose RF and filtering applications.

Key Parameters

Parameter	Value
Inductance	4.7 mH
Inductance Tolerance	±10%
Current Rating	50 mA
DC Resistance (Max)	18 Ohm
Q Factor @ 252 kHz	90
Self-Resonant Frequency	600 kHz
Operating Temperature Range	-20°C to 80°C
Shielding	Unshielded
Mounting Type	Through Hole
Package Type	Radial, Vertical Cylinder

Substitute Part Grouping Explanation

Substitution eligibility for the PT12130SL is determined by strict equivalence across the following critical parameters:

Inductance value: 4.7 mH with ±10% tolerance
Current rating: 50 mA minimum
DC resistance: 18 Ohm maximum
Q factor: 90 @ 252 kHz
Self-resonant frequency: 600 kHz
Operating temperature range: -20°C to 80°C minimum
Mounting configuration: Through-hole radial, vertical cylinder package
Shielding classification: Unshielded

The substitute parts 4564-472K and 4564R-472K from API Delevan Inc. meet all electrical and mechanical parameters required for direct substitution. Both parts are classified as active products, ensuring continued availability and supply chain stability compared to the obsolete PT12130SL.

Parameter Comparison

Parameter	PT12130SL (Bourns)	4564-472K (API Delevan)	4564R-472K (API Delevan)
Inductance	4.7 mH	4.7 mH	4.7 mH
Inductance Tolerance	±10%	±10%	±10%
Current Rating (Amps)	50 mA	50 mA	50 mA
DC Resistance (Max)	18 Ohm	18 Ohm	18 Ohm
Q @ 252 kHz	90	90	90
Self-Resonant Frequency	600 kHz	600 kHz	600 kHz
Operating Temperature	-20°C to 80°C	-20°C to 80°C	-20°C to 80°C
Shielding	Unshielded	Unshielded	Unshielded
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Vertical Cylinder	Radial, Vertical Cylinder	Radial, Vertical Cylinder
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both 4564-472K and 4564R-472K are electrically and mechanically equivalent to the PT12130SL and satisfy all functional requirements for direct substitution. The primary differentiation between the two API Delevan alternatives is regulatory compliance:

4564R-472K is the preferred substitute for applications requiring ROHS3 compliance, matching the original PT12130SL certification status. This part maintains full electrical equivalence while ensuring regulatory alignment for new designs and procurement cycles.

4564-472K is functionally equivalent but carries RoHS non-compliant status. Selection of this part should be limited to legacy systems or applications where RoHS compliance is not a requirement.

Both substitute parts are currently active products with confirmed inventory availability, providing supply chain continuity for the obsolete PT12130SL.

Frequently Asked Questions (FAQ)

Q: Can 4564-472K and 4564R-472K be used interchangeably with PT12130SL?

A: Both parts meet identical electrical specifications (4.7 mH inductance, 50 mA current rating, 18 Ohm DC resistance, 90 Q @ 252 kHz, 600 kHz self-resonant frequency) and share the same through-hole radial package configuration. Electrical substitution is direct. RoHS compliance status differs between the two alternatives.

Q: What are the physical dimension differences between PT12130SL and the substitute parts?

A: PT12130SL has a diameter of 0.400" (10.15 mm) and seated height of 0.500" (12.70 mm). Both 4564-472K and 4564R-472K have a diameter of 0.340" (8.64 mm) and seated height of 0.433" (11.00 mm). The substitute parts are physically smaller, which may affect PCB layout and mechanical clearance considerations.

Q: Why is PT12130SL classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Bourns Inc. The active substitute parts from API Delevan Inc. provide equivalent electrical performance and ensure continued design support.

Q: Which substitute part should be selected for new designs?

A: Selection depends on regulatory requirements. For designs requiring ROHS3 compliance, use 4564R-472K. For applications without RoHS requirements, either part is acceptable based on availability and cost considerations.

Q: Are there any core material differences between PT12130SL and the substitutes?

A: PT12130SL core material is not specified in available documentation. Both 4564-472K and 4564R-472K use ferrite cores. Despite this difference, both parts deliver identical electrical performance across all specified parameters.

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