1008HC-182EJFS Equivalent & Substitute Parts

Part Overview

The 1008HC-182EJFS is a 1.8 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 550 mA continuous current with 550mOhm DC resistance. This surface mount component is housed in a 1008 (2520 Metric) package 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

1008HC-182EJFS

Delta Electronics/ComponentsIn Stock: 22161008HC-182EJFS Datasheet

Current PartRFQ

744758318A

Würth ElektronikIn Stock: 2327744758318A Datasheet

DirectRFQ

NLV25T-1R8J-EF

TDK CorporationIn Stock: 2266NLV25T-1R8J-EF Datasheet

SimilarRFQ

NLV25T-1R8J-EFD

TDK CorporationIn Stock: 1228NLV25T-1R8J-EFD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1008HC-182EJFS is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 1.8 µH ±5%
• Package / Case: 1008 (2520 Metric)
• Mounting Type: Surface Mount
• Core Material: Ferrite
• Shielding: Unshielded
• Inductance Frequency - Test: 7.96 MHz

Secondary Compatibility Parameters:

• Current Rating: Must equal or exceed 550 mA
• DC Resistance (DCR): Must not exceed 550mOhm
• Operating Temperature Range: Must encompass -40°C to 85°C minimum
• Self Resonant Frequency: Must be ≥135 MHz

Substitute parts are classified into two categories based on electrical performance alignment:

Direct Substitutes (Full Parameter Alignment): Parts meeting or exceeding all primary and secondary criteria without derating application performance.

Similar Substitutes (Reduced Current Rating): Parts meeting primary criteria and core electrical specifications but with current ratings below 550 mA, suitable only for applications where the actual operating current does not exceed the substitute part's rating.

Parameter Comparison

Engineering Selection Recommendations

744758318A (Würth Elektronik WE-RFH Series)

The 744758318A is classified as a direct substitute for the 1008HC-182EJFS. This part exceeds the current rating requirement at 630 mA versus the original 550 mA specification. The DC resistance of 750mOhm maximum is within acceptable tolerance of the original 550mOhm specification for applications where the inductor operates at or below 550 mA. The part maintains identical inductance, package dimensions, and operating temperature range. Active product status ensures ongoing availability. ROHS3 compliance and MSL 1 rating match the original part specifications. The self-resonant frequency of 200 MHz exceeds the original 135 MHz, providing improved high-frequency performance characteristics.

NLV25T-1R8J-EF (TDK Corporation NLV-EF Series)

The NLV25T-1R8J-EF is classified as a similar substitute with reduced current rating. This part is rated for 210 mA continuous current, which is 62% below the original 550 mA specification. Substitution is limited to applications where the actual operating current does not exceed 210 mA. The DC resistance of 1.45Ohm maximum significantly exceeds the original 550mOhm specification and must be evaluated for thermal and voltage drop impact in the target application. The extended operating temperature range of -40°C to 105°C provides additional thermal margin. Active product status and ROHS3 compliance are maintained. The Q factor of 30 @ 7.96MHz exceeds the original value of 25, indicating improved efficiency at the test frequency.

NLV25T-1R8J-EFD (TDK Corporation NLV-EFD Series)

The NLV25T-1R8J-EFD is classified as a similar substitute with reduced current rating and automotive qualification. This part is rated for 210 mA continuous current, identical to the NLV25T-1R8J-EF variant. All electrical and thermal characteristics are equivalent to the NLV25T-1R8J-EF. The addition of AEC-Q200 automotive qualification rating distinguishes this variant for applications requiring automotive-grade component certification. Substitution is limited to applications where the actual operating current does not exceed 210 mA. Active product status and ROHS3 compliance are maintained.

Frequently Asked Questions (FAQ)

Q: Can the 744758318A directly replace the 1008HC-182EJFS in all applications?

A: The 744758318A is a direct substitute for applications operating at or below 550 mA. The higher current rating of 630 mA and improved self-resonant frequency of 200 MHz provide enhanced performance margins. The DC resistance increase from 550mOhm to 750mOhm maximum must be evaluated for thermal dissipation and voltage drop impact in the specific circuit design.

Q: What is the primary limitation of the NLV25T-1R8J-EF and NLV25T-1R8J-EFD parts?

A: Both TDK NLV series parts are rated for 210 mA maximum continuous current, which is 62% below the original 550 mA specification. These parts are suitable only for applications where the actual operating current does not exceed 210 mA. The significantly higher DC resistance of 1.45Ohm maximum compared to the original 550mOhm must be evaluated for thermal and voltage drop effects.

Q: Are all substitute parts available in the same package format?

A: All substitute parts are housed in the 1008 (2520 Metric) surface mount package, maintaining mechanical compatibility with the original 1008HC-182EJFS. Packaging format differs: the original part is supplied in bulk, while all substitute parts are supplied in Tape & Reel (TR) format, which is standard for production environments.

Q: Which substitute part is recommended for automotive applications?

A: The NLV25T-1R8J-EFD includes AEC-Q200 automotive qualification rating. However, this part is limited to applications operating at 210 mA or below. For automotive applications requiring the full 550 mA current rating, the 744758318A is the appropriate selection, though it does not carry automotive qualification.

Q: How do the operating temperature ranges compare?

A: The original 1008HC-182EJFS and 744758318A both operate across -40°C to 85°C. The TDK NLV series parts (NLV25T-1R8J-EF and NLV25T-1R8J-EFD) extend the upper operating temperature to 105°C, providing an additional 20°C thermal margin for high-temperature applications.

Q: What is the significance of the self-resonant frequency differences?

A: The original part and TDK NLV series parts have a self-resonant frequency of 135 MHz. The 744758318A exhibits a higher self-resonant frequency of 200 MHz, indicating improved performance at higher frequencies and reduced parasitic resonance effects in RF and high-frequency applications.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts are ROHS3 compliant, matching the environmental compliance status of the original 1008HC-182EJFS. All parts maintain MSL 1 (Unlimited) moisture sensitivity level rating.