1206HS-331EJTS Equivalent & Substitute Parts

Part Overview

The 1206HS-331EJTS is a 330 nH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components. This surface mount component is rated for 590 mA continuous current with a DC resistance of 620 mOhm and operates across the temperature range of -40°C to 125°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

1206HS-331EJTS

Delta Electronics/ComponentsIn Stock: 11721206HS-331EJTS Datasheet

Current PartRFQ

LQH31MNR33K03L

Murata ElectronicsIn Stock: 748LQH31MNR33K03L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1206HS-331EJTS is evaluated based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 nH (exact match required)
• Package / Case: 1206 (3216 Metric) surface mount form factor
• Mounting Type: Surface Mount
• Shielding configuration: Unshielded

Secondary Compatibility Factors:

• Current Rating: Substitute must support minimum 590 mA continuous current
• DC Resistance: Substitute DCR must not exceed 620 mOhm to maintain circuit performance
• Operating Temperature Range: Substitute must cover -40°C to 125°C minimum
• Regulatory Compliance: RoHS3 and REACH status alignment

The LQH31MNR33K03L from Murata Electronics matches the primary criteria of inductance value, package form factor, and surface mount configuration. However, the substitute exhibits reduced current rating (230 mA versus 590 mA) and lower DC resistance (450 mOhm versus 620 mOhm), with a narrower operating temperature range (-40°C to 85°C versus -40°C to 125°C).

Parameter Comparison

Engineering Selection Recommendations

The LQH31MNR33K03L is available as an active product from Murata Electronics and maintains ROHS3 compliance and unlimited moisture sensitivity rating, supporting long-term procurement viability. Both components share identical inductance values, package dimensions, and surface mount configuration.

Selection of the LQH31MNR33K03L requires circuit-level evaluation of the following deviations:

Current Rating Limitation: The substitute supports 230 mA maximum continuous current compared to 590 mA for the original part. Applications requiring current levels above 230 mA cannot use this substitute without thermal and performance degradation.

DC Resistance Difference: The substitute exhibits 450 mOhm DCR versus 620 mOhm for the original. This lower resistance reduces power dissipation and heat generation, which may be beneficial in power-sensitive applications but represents a circuit parameter change.

Operating Temperature Range: The substitute operates to 85°C maximum versus 125°C for the original. Applications requiring operation above 85°C cannot use this substitute.

Tolerance Specification: The substitute carries ±10% inductance tolerance compared to ±5% for the original, resulting in wider inductance variation across production batches.

Core Material: The substitute uses ferrite core material versus ceramic for the original, affecting frequency response characteristics and Q factor performance.

Frequently Asked Questions (FAQ)

Q: Can the LQH31MNR33K03L directly replace the 1206HS-331EJTS in all applications?

A: Direct replacement is limited to applications where circuit current requirements do not exceed 230 mA and maximum operating temperature does not exceed 85°C. The inductance value and package form factor are identical, but electrical performance parameters differ significantly.

Q: What is the impact of the current rating difference between these parts?

A: The 1206HS-331EJTS supports 590 mA continuous current, while the LQH31MNR33K03L supports 230 mA. Exceeding the substitute's current rating causes inductor saturation, increased DCR, and potential thermal failure. Current derating analysis is required before substitution.

Q: How does the DC resistance difference affect circuit performance?

A: The substitute's 450 mOhm DCR is lower than the original's 620 mOhm. In circuits where DCR is a critical parameter (such as current sensing or impedance matching networks), this difference alters circuit behavior and must be evaluated against design specifications.

Q: Are both parts suitable for high-temperature applications?

A: The 1206HS-331EJTS operates to 125°C, supporting high-temperature environments. The LQH31MNR33K03L is limited to 85°C maximum. Applications requiring operation above 85°C must use the original part or identify alternative substitutes with higher temperature ratings.

Q: What is the significance of the tolerance difference?

A: The original part specifies ±5% inductance tolerance, while the substitute specifies ±10%. In precision circuits where inductance tolerance is critical (such as RF matching networks or tuned filters), the wider tolerance of the substitute may cause circuit performance variation.

Q: Are both parts RoHS compliant?

A: Both the 1206HS-331EJTS and LQH31MNR33K03L are ROHS3 compliant and REACH unaffected, supporting regulatory requirements for restricted substance elimination.

Q: What packaging options are available for the substitute?

A: The LQH31MNR33K03L is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. Verify packaging compatibility with your procurement and assembly requirements.