ELT-5KN134C Equivalent & Substitute Parts

Part Overview

The ELT-5KN134C is a 1 mH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 55 mA continuous current with 11.5 Ohm DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute inductors must maintain the same inductance value, tolerance, and current handling characteristics while meeting modern compliance standards.

Substiute Parts

ELT-5KN134C

Panasonic Electronic ComponentsIn Stock: 4781ELT-5KN134C Datasheet

Current PartRFQ

SDR0403-102KL

Bourns Inc.In Stock: 4296SDR0403-102KL Datasheet

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SDR0503-102KL

Bourns Inc.In Stock: 17982SDR0503-102KL Datasheet

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SDR0604-102KL

Bourns Inc.In Stock: 10532SDR0604-102KL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute inductors for the ELT-5KN134C must satisfy the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Inductance value: 1 mH (±10% tolerance)
• Shielding type: Unshielded
• Mounting type: Surface Mount
• Inductance test frequency: 1 kHz

Current and Resistance Considerations: Substitute parts must accommodate the original 55 mA current requirement. Parts with higher current ratings (90 mA, 110 mA, 120 mA) provide margin for circuit operation. DC resistance values ranging from 6.8 Ohm to 14 Ohm are acceptable within the functional envelope of the original 11.5 Ohm specification.

Compliance Requirements: All substitute parts must maintain RoHS compliance and MSL Level 1 rating to ensure compatibility with modern manufacturing and storage conditions.

Parameter Comparison

Engineering Selection Recommendations

All three Bourns substitute parts (SDR0403-102KL, SDR0503-102KL, SDR0604-102KL) meet the core electrical requirements for replacing the obsolete ELT-5KN134C. Selection among these options depends on circuit-specific requirements:

SDR0503-102KL provides the closest electrical match to the original part, with identical 11.5 Ohm DC resistance and higher current rating (110 mA). This part is recommended for direct substitution in existing designs where DC resistance is a critical parameter.

SDR0604-102KL offers the lowest DC resistance (6.8 Ohm) and highest current rating (120 mA), suitable for applications requiring minimal power dissipation or higher current headroom.

SDR0403-102KL provides a mid-range option with 14 Ohm DC resistance and 90 mA current rating, appropriate for applications with moderate current requirements.

All substitute parts carry active product status, ROHS3 compliance, and specified operating temperature ranges (-40°C ~ 125°C), ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can SDR0403-102KL, SDR0503-102KL, and SDR0604-102KL be used interchangeably with ELT-5KN134C?

A: These parts share identical inductance (1 mH) and tolerance (±10%), unshielded configuration, and surface mount packaging. Interchangeability depends on circuit sensitivity to DC resistance and current rating. SDR0503-102KL matches the original DC resistance most closely.

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

A: DC resistance affects power dissipation and voltage drop across the inductor. The original ELT-5KN134C specifies 11.5 Ohm. SDR0503-102KL maintains this value. SDR0604-102KL (6.8 Ohm) reduces dissipation; SDR0403-102KL (14 Ohm) increases it. Circuit analysis is required to determine acceptable tolerance.

Q: Are there physical size differences between the substitute parts and the original?

A: Yes. ELT-5KN134C dimensions are 5.20mm x 5.20mm x 2.00mm. Substitute parts vary: SDR0403-102KL (4.50mm x 4.00mm x 4.60mm), SDR0503-102KL (5.00mm x 4.80mm x 3.30mm), SDR0604-102KL (5.80mm x 5.80mm x 4.80mm). PCB layout verification is necessary before implementation.

Q: Do all substitute parts meet the same compliance standards as the original?

A: All substitute parts are ROHS3 compliant and carry MSL Level 1 rating, exceeding the original RoHS compliance. Operating temperature ranges (-40°C ~ 125°C) are specified for all substitutes, providing defined thermal performance.

Q: What is the difference between wirewound and drum core wirewound construction?

A: The original ELT-5KN134C uses standard wirewound construction. All substitutes use drum core wirewound construction with ferrite cores, which provides improved Q factor and self-resonant frequency characteristics while maintaining the same inductance and tolerance specifications.