1210HS-821EMFS Equivalent & Substitute Parts

Part Overview

The 1210HS-821EMFS is an 820 nH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components. This surface mount component is rated for 450 mA continuous current with a DC resistance of 250 mOhm and operates across the temperature range of -40°C to 85°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

1210HS-821EMFS

Delta Electronics/ComponentsIn Stock: 11371210HS-821EMFS Datasheet

Current PartRFQ

NLV32T-R82J-EF

TDK CorporationIn Stock: 1973NLV32T-R82J-EF Datasheet

DirectRFQ

NLV32T-R82J-EFD

TDK CorporationIn Stock: 3144NLV32T-R82J-EFD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1210HS-821EMFS is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Inductance value: 820 nH (exact match required)
• Current rating: 450 mA minimum (equal or higher acceptable)
• Package / Case: 1210 (3225 Metric) (exact match required for PCB layout compatibility)
• Core material: Ferrite (maintains electromagnetic performance characteristics)
• Shielding: Unshielded (maintains EMI profile)
• Mounting type: Surface Mount (maintains assembly process compatibility)

Mechanical Compatibility Requirements:

• Physical dimensions must accommodate 1210 footprint specifications
• Height seated maximum: 0.094" (2.40 mm) or less (ensures clearance compatibility)

Regulatory & Compliance Requirements:

• RoHS3 compliance (mandatory for current production standards)
• Moisture Sensitivity Level 1 (unlimited shelf life, no special handling required)

The substitute parts NLV32T-R82J-EF and NLV32T-R82J-EFD, both manufactured by TDK Corporation, satisfy all electrical and mechanical compatibility criteria. Both parts are active products with enhanced operating temperature ranges and tighter inductance tolerances compared to the obsolete 1210HS-821EMFS.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: NLV32T-R82J-EFD

The NLV32T-R82J-EFD is the preferred substitute for the obsolete 1210HS-821EMFS. This part maintains all critical electrical and mechanical parameters required for direct replacement. The TDK NLV32T-R82J-EFD offers the following advantages:

• Active product status ensures long-term availability and supply chain continuity
• AEC-Q200 automotive qualification rating provides enhanced reliability documentation
• Extended operating temperature range (-40°C to 105°C) exceeds the original specification
• Tighter inductance tolerance (±5% versus ±20%) improves circuit performance consistency
• RoHS3 compliance and MSL 1 rating maintain regulatory and handling requirements
• Tape & Reel packaging supports automated assembly processes

Secondary Substitute: NLV32T-R82J-EF

The NLV32T-R82J-EF serves as an alternative substitute with identical electrical specifications to the NLV32T-R82J-EFD. This part is suitable for applications where AEC-Q200 qualification is not required. Both TDK alternatives provide equivalent functional performance for the 820 nH inductance requirement at 450 mA current rating.

Design Consideration:

The substitute parts exhibit higher DC resistance (650 mOhm maximum) compared to the original part (250 mOhm). Circuit designs dependent on the lower DCR specification of the 1210HS-821EMFS require thermal and power dissipation analysis to confirm compatibility with the substitute parts.

Frequently Asked Questions (FAQ)

Q: Can NLV32T-R82J-EF and NLV32T-R82J-EFD be used interchangeably with the 1210HS-821EMFS?

A: Both TDK parts are electrically and mechanically compatible with the 1210HS-821EMFS for the 820 nH inductance and 450 mA current rating. The primary difference is that NLV32T-R82J-EFD includes AEC-Q200 automotive qualification. Selection between the two depends on application requirements for automotive-grade certification.

Q: What is the impact of the higher DC resistance in the substitute parts?

A: The substitute parts specify 650 mOhm maximum DCR compared to 250 mOhm for the original part. This difference affects power dissipation and thermal performance. Applications sensitive to inductor losses require thermal analysis to confirm the substitute parts operate within acceptable temperature limits.

Q: Are the physical dimensions of the substitute parts compatible with the original PCB layout?

A: The substitute parts are smaller (3.20mm x 2.50mm) than the original (3.50mm x 2.80mm) but maintain the same 1210 package classification and identical maximum seated height (2.40 mm). The smaller footprint provides additional PCB layout flexibility and is compatible with existing 1210 land patterns.

Q: Do the substitute parts meet current regulatory requirements?

A: Both NLV32T-R82J-EF and NLV32T-R82J-EFD are RoHS3 compliant and carry MSL 1 rating, meeting current production and environmental standards. The NLV32T-R82J-EFD additionally carries AEC-Q200 qualification for automotive applications.

Q: What is the difference between the NLV-EF and NLV-EFD series designations?

A: Both parts are from TDK's NLV series of unshielded wirewound inductors. The NLV32T-R82J-EFD variant includes AEC-Q200 automotive qualification, while the NLV32T-R82J-EF does not. Electrical and mechanical specifications are identical between the two variants.

Q: How does the inductance tolerance affect circuit performance?

A: The substitute parts offer ±5% inductance tolerance compared to ±20% for the original part. This tighter tolerance reduces circuit performance variation and improves consistency across production batches, particularly beneficial for high-frequency filtering and impedance matching applications.

Q: Are the substitute parts available in the same packaging format?

A: Both substitute parts are supplied in Tape & Reel (TR) packaging, which is standard for automated assembly processes. The original part packaging format was not specified in the available data.