1210HS-272EMFS Equivalent & Substitute Parts Reference

Part Overview

The 1210HS-272EMFS is a 2.7 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 320 mA continuous current with 900mOhm DC resistance. This surface mount component is housed in a 1210 (3225 Metric) package and operates across the -40°C to 85°C temperature range.

The 1210HS-272EMFS carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

1210HS-272EMFS

Delta Electronics/ComponentsIn Stock: 7811210HS-272EMFS Datasheet

Current PartRFQ

7440320027

Würth ElektronikIn Stock: 20667440320027 Datasheet

DirectRFQ

NLV32T-2R2J-EFD

TDK CorporationIn Stock: 3338NLV32T-2R2J-EFD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1210HS-272EMFS are identified based on the following critical parameters that determine functional compatibility:

Primary Matching Criteria:

• Inductance value within tolerance band
• Package/case form factor (1210/3225 Metric)
• Surface mount configuration
• Ferrite drum core construction
• Unshielded design
• Operating temperature range compatibility
• RoHS3 compliance

Secondary Compatibility Factors:

• Current rating equal to or exceeding 320 mA
• DC resistance acceptable for circuit application
• Frequency characteristics suitable for intended use

The substitute parts listed below satisfy the primary matching criteria. Variations in current rating, DC resistance, and frequency response reflect different design approaches within the same inductance and package class.

Parameter Comparison

Engineering Selection Recommendations

7440320027 (Würth Elektronik WE-LQ Series)

This substitute provides identical 2.7 µH inductance with ±20% tolerance matching the original specification. The 600 mA current rating exceeds the 320 mA requirement, providing design margin. DC resistance of 180 mOhm is significantly lower than the original 900 mOhm, resulting in reduced power dissipation. The extended operating temperature range (-40°C to 125°C) accommodates applications requiring higher thermal performance. Active product status ensures long-term availability. ROHS3 compliance and unlimited MSL rating maintain environmental and manufacturing compatibility.

NLV32T-2R2J-EFD (TDK NLV-EFD Series)

This substitute provides 2.2 µH inductance with tighter ±5% tolerance compared to the original ±20% specification. Current rating of 320 mA matches the original requirement exactly. DC resistance of 1 Ohm Max is higher than the original 900 mOhm specification. The inductor carries AEC-Q200 automotive qualification, indicating enhanced reliability screening. Operating temperature range extends to 105°C. Active product status ensures supply availability. ROHS3 compliance is maintained, though REACH status is affected (component contains substances of concern).

Both substitutes maintain identical package form factor (1210/3225 Metric), surface mount configuration, ferrite drum core construction, and unshielded design. Selection between substitutes depends on circuit requirements for current margin, DC resistance characteristics, temperature performance, and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the 7440320027 directly replace the 1210HS-272EMFS in all applications?

A: The 7440320027 maintains identical inductance value and tolerance, package form factor, and core construction. The higher current rating (600 mA vs. 320 mA) and lower DC resistance (180 mOhm vs. 900 mOhm) represent design improvements. Substitution is valid for applications where the original 320 mA rating was not a limiting constraint and where lower DC resistance is acceptable or beneficial.

Q: Why does the NLV32T-2R2J-EFD have a different inductance value (2.2 µH vs. 2.7 µH)?

A: The NLV32T-2R2J-EFD is classified as a substitute based on the same 1210 package class and ferrite drum core construction. The 2.2 µH value falls within the tolerance band of the original 2.7 µH specification when considering the ±20% tolerance range. However, this represents a nominal value difference and requires circuit-level evaluation for suitability.

Q: Are all three parts physically identical in size?

A: All three inductors use the 1210 (3225 Metric) package designation. Physical dimensions vary slightly: the main part measures 0.138" L x 0.110" W with 0.094" max height; the Würth part measures 0.126" L x 0.098" W with 0.091" max height; the TDK part measures 0.126" L x 0.098" W with 0.094" max height. These variations remain within the 1210 package class and are compatible with standard 1210 PCB footprints.

Q: What is the significance of the AEC-Q200 rating on the TDK part?

A: AEC-Q200 is an automotive industry qualification standard indicating the component has undergone enhanced reliability testing and screening. This certification is relevant for applications requiring automotive-grade component reliability but is not required for general industrial or consumer applications.

Q: How do DC resistance differences affect circuit performance?

A: DC resistance directly impacts power dissipation and voltage drop across the inductor. The 7440320027 with 180 mOhm DCR dissipates significantly less power than the original 900 mOhm specification at the same current level. The NLV32T-2R2J-EFD with 1 Ohm DCR dissipates more power. Circuit design must account for these differences in thermal management and voltage regulation.

Q: Are there any supply chain advantages to selecting one substitute over another?

A: Both substitute parts carry active product status, ensuring ongoing availability. The 7440320027 has 2024 pieces in stock inventory; the NLV32T-2R2J-EFD has 3321 pieces in stock. Both are supplied in Tape & Reel packaging suitable for automated assembly. Long-term availability is supported by active manufacturer status for both alternatives.