1210HS-392EMFS Equivalent & Substitute Parts

Part Overview

The 1210HS-392EMFS is a 3.9 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 290 mA continuous current with 1.1Ohm DC resistance. This surface mount component is housed in a 1210 (3225 Metric) package and operates across the temperature range of -40°C to 85°C.

The 1210HS-392EMFS is classified as obsolete. Substitute components are necessary to maintain design continuity and ensure ongoing component availability for new production builds and field replacements.

Substiute Parts

1210HS-392EMFS

Delta Electronics/ComponentsIn Stock: 9291210HS-392EMFS Datasheet

Current PartRFQ

NLV32T-3R9J-EF

TDK CorporationIn Stock: 5164NLV32T-3R9J-EF Datasheet

SimilarRFQ

NLV32T-3R9J-EFD

TDK CorporationIn Stock: 1133NLV32T-3R9J-EFD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the 1210HS-392EMFS are qualified based on the following critical parameters:

Electrical Equivalence Criteria:

• Inductance value: 3.9 µH (identical)
• Package / Case: 1210 (3225 Metric) (identical)
• Core material: Ferrite, unshielded (identical)
• Mounting type: Surface Mount (identical)
• Q @ Frequency: 30 @ 7.96MHz (identical)
• Inductance Frequency Test: 7.96 MHz (identical)

Acceptable Parameter Variations:

• Current Rating: Substitute parts rated at 250 mA are acceptable for applications where the original 290 mA rating is not a hard requirement
• DC Resistance: Substitute parts with 1.3Ohm maximum are acceptable within typical circuit design tolerances
• Inductance Tolerance: Substitute parts with ±5% tolerance provide tighter specification than the original ±20%
• Operating Temperature Range: Substitute parts rated to 105°C exceed the original -40°C ~ 85°C specification
• Self Resonant Frequency: Substitute parts at 55MHz operate within acceptable frequency margins for this inductor class

The substitute parts NLV32T-3R9J-EF and NLV32T-3R9J-EFD from TDK Corporation meet all electrical and mechanical equivalence criteria.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: NLV32T-3R9J-EFD

The NLV32T-3R9J-EFD is the preferred substitute for the obsolete 1210HS-392EMFS. This component is manufactured by TDK Corporation and maintains active product status. The NLV32T-3R9J-EFD carries AEC-Q200 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components. Both substitute parts are ROHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1).

Secondary Substitute: NLV32T-3R9J-EF

The NLV32T-3R9J-EF is functionally equivalent to the primary substitute and differs only in the absence of AEC-Q200 rating. This component is suitable for non-automotive applications where automotive qualification is not required.

Substitution Considerations:

Both TDK substitutes feature tighter inductance tolerance (±5% versus ±20%), lower self-resonant frequency (55MHz versus 120MHz), and extended operating temperature range (-40°C ~ 105°C versus -40°C ~ 85°C). The current rating reduction from 290 mA to 250 mA and DC resistance increase from 1.1Ohm to 1.3Ohm maximum require circuit-level verification to confirm compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the NLV32T-3R9J-EF and NLV32T-3R9J-EFD be used interchangeably with the 1210HS-392EMFS?

A: Both TDK substitutes are electrically and mechanically equivalent to the 1210HS-392EMFS for the core inductor function. The primary differences are the reduced current rating (250 mA versus 290 mA) and increased DC resistance (1.3Ohm maximum versus 1.1Ohm). Circuit designs must be evaluated to confirm these parameter variations are acceptable for the intended application.

Q: What is the difference between NLV32T-3R9J-EF and NLV32T-3R9J-EFD?

A: Both parts are electrically identical 3.9 µH inductors in the 1210 package. The NLV32T-3R9J-EFD includes AEC-Q200 automotive qualification, while the NLV32T-3R9J-EF does not. Select the EFD variant for automotive applications requiring AEC-Q200 compliance.

Q: Are the physical dimensions compatible between the original and substitute parts?

A: The 1210HS-392EMFS measures 0.138" L x 0.110" W (3.50mm x 2.80mm) with a maximum seated height of 0.094" (2.40mm). The TDK substitutes measure 0.126" L x 0.098" W (3.20mm x 2.50mm) with the same maximum seated height of 0.094" (2.40mm). Both are 1210 (3225 Metric) package components and are compatible with standard 1210 PCB footprints.

Q: What is the impact of the lower current rating on circuit performance?

A: The substitute parts are rated for 250 mA continuous current compared to the original 290 mA rating. Applications operating at or near the original 290 mA specification require circuit analysis to confirm the substitute part operates within acceptable thermal and saturation margins.

Q: Are the substitute parts RoHS compliant?

A: Both NLV32T-3R9J-EF and NLV32T-3R9J-EFD are ROHS3 compliant. The original 1210HS-392EMFS is also ROHS3 compliant.

Q: What packaging formats are available for the substitute parts?

A: The TDK substitute parts are supplied in Tape & Reel (TR) format. The original 1210HS-392EMFS was supplied in bulk packaging. Tape & Reel format is standard for high-volume production assembly.

Q: How do the inductance tolerances compare?

A: The original 1210HS-392EMFS has ±20% inductance tolerance. Both TDK substitutes have ±5% inductance tolerance, providing tighter specification control and improved circuit performance predictability.