IMC1210ERR82K Equivalent & Substitute Parts

Part Overview

The IMC1210ERR82K is a 820 nH unshielded drum core wirewound inductor manufactured by Vishay Dale, designed for surface mount applications in the 1210 (3225 Metric) package. This component operates at 450 mA current rating with a maximum DC resistance of 670 mOhm and is actively produced. Alternative components may be required due to supply constraints, design optimization, or specific performance requirements in target applications.

Key Parameters

Parameter	Value
Inductance	820 nH
Tolerance	±10%
Current Rating	450 mA
DC Resistance (Max)	670 mOhm
Core Type	Drum Core, Wirewound
Shielding	Unshielded
Package	1210 (3225 Metric)
Operating Temperature Range	-55°C ~ 125°C
Q @ 25.2 MHz	30
Self Resonant Frequency	140 MHz
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the IMC1210ERR82K is determined by the following critical parameters:

Inductance Value: 820 nH (±10% tolerance maintained)
Current Rating: 450 mA minimum
DC Resistance: Maximum 670 mOhm (lower values acceptable)
Package Compatibility: 1210 (3225 Metric) surface mount
Core Configuration: Drum core, wirewound construction
Shielding: Unshielded
Frequency Performance: Q factor and self-resonant frequency characteristics

The Würth Elektronik part 7447640082 qualifies as a direct substitute based on matching inductance, current rating, tolerance, package dimensions, and core type. Variations in core material (ferrite vs. iron powder), DC resistance (650 mOhm vs. 670 mOhm), operating temperature range, and self-resonant frequency are within acceptable engineering parameters for equivalent functionality.

Parameter Comparison

Parameter	IMC1210ERR82K (Vishay Dale)	7447640082 (Würth Elektronik)
Inductance	820 nH	820 nH
Tolerance	±10%	±10%
Current Rating (Amps)	450 mA	450 mA
DC Resistance (Max)	670 mOhm	650 mOhm
Core Type	Drum Core, Wirewound	Drum Core, Wirewound
Core Material	Iron Powder	Ferrite
Shielding	Unshielded	Unshielded
Package / Case	1210 (3225 Metric)	1210 (3225 Metric)
Size / Dimension	0.126" L x 0.098" W (3.20mm x 2.49mm)	0.126" L x 0.098" W (3.20mm x 2.50mm)
Height - Seated (Max)	0.095" (2.41mm)	0.094" (2.40mm)
Q @ 25.2 MHz	30	30
Self Resonant Frequency	140 MHz	370 MHz
Operating Temperature	-55°C ~ 125°C	-40°C ~ 105°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both the IMC1210ERR82K and 7447640082 are active production components with ROHS3 compliance and unlimited moisture sensitivity rating. Selection between these parts should be based on:

IMC1210ERR82K (Vishay Dale) is suitable when the extended operating temperature range of -55°C to 125°C is required, or when iron powder core characteristics are specified for the application.

7447640082 (Würth Elektronik) is suitable when the lower DC resistance (650 mOhm vs. 670 mOhm) provides design margin benefits, or when the higher self-resonant frequency (370 MHz vs. 140 MHz) is advantageous for the circuit topology. The ferrite core material may offer different frequency response characteristics compared to iron powder.

Both components maintain identical inductance values, current ratings, tolerance specifications, and package dimensions, ensuring mechanical and electrical compatibility in 1210 surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can 7447640082 be used as a direct replacement for IMC1210ERR82K?

A: Yes. Both components share identical inductance (820 nH), current rating (450 mA), tolerance (±10%), package dimensions (1210/3225 Metric), and core configuration (drum core, wirewound, unshielded). DC resistance and self-resonant frequency differ slightly but remain within acceptable substitution parameters.

Q: What is the difference in core material between these parts?

A: IMC1210ERR82K uses iron powder core material, while 7447640082 uses ferrite core material. Both achieve the same inductance value and Q factor at 25.2 MHz. Core material selection affects frequency response characteristics and temperature stability behavior.

Q: Are there temperature range limitations when substituting?

A: IMC1210ERR82K operates from -55°C to 125°C, while 7447640082 operates from -40°C to 105°C. If the application requires operation below -40°C or above 105°C, the Vishay Dale part is required.

Q: How do the DC resistance values affect circuit performance?

A: 7447640082 has lower maximum DC resistance (650 mOhm vs. 670 mOhm). Lower DC resistance reduces resistive losses in the inductor, which may improve circuit efficiency. Both values are acceptable for equivalent functionality in standard applications.

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

A: Both components have Q factor of 30 at 25.2 MHz. The 7447640082 has higher self-resonant frequency (370 MHz vs. 140 MHz), making it more suitable for applications requiring operation closer to resonant frequencies.

Q: Do packaging and PCB footprint considerations differ?

A: Both parts use identical 1210 (3225 Metric) surface mount packages with nearly identical dimensions. Height differences are minimal (0.095" vs. 0.094"), presenting no practical PCB layout constraints.

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