1210-822K Equivalent & Substitute Parts Reference

Part Overview

The 1210-822K is a fixed unshielded inductor manufactured by API Delevan Inc., rated at 8.2 µH inductance with a maximum current rating of 305 mA and 2Ohm maximum DC resistance. This surface mount component operates across the temperature range of -55°C to 125°C and is classified as Active product status. Substitute parts are identified when equivalent electrical parameters and mechanical compatibility exist, enabling procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Inductance	8.2	µH
Inductance Tolerance	±10%	-
Current Rating	305	mA
DC Resistance (Max)	2	Ohm
Shielding	Unshielded	-
Core Material	Ferrite	-
Operating Temperature Range	-55°C to 125°C	-
Mounting Type	Surface Mount	-
Package / Case	1210 (3225 Metric)	-

Substitute Part Grouping Explanation

Substitution eligibility for the 1210-822K is determined by the following critical parameters:

Electrical Equivalence Criteria:

Inductance value: 8.2 µH (±10% tolerance)
DC Resistance: 2Ohm maximum
Shielding configuration: Unshielded
Core material: Ferrite

Mechanical Compatibility Criteria:

Mounting type: Surface Mount
Package classification: 1210 (3225 Metric) or equivalent footprint dimensions
Physical dimensions compatible with 1210 land pattern

Performance Criteria:

Operating temperature range must encompass or match the specified range
Q factor and self-resonant frequency characteristics must be within acceptable industrial tolerances

The substitute part CM322522-8R2KL meets the electrical and mechanical criteria for substitution. However, the current rating differential (140 mA versus 305 mA) and operating temperature lower bound (-40°C versus -55°C) represent functional limitations that must be evaluated against specific application requirements.

Parameter Comparison

Parameter	1210-822K (API Delevan)	CM322522-8R2KL (Bourns)	Match Status
Inductance	8.2 µH	8.2 µH	Equivalent
Inductance Tolerance	±10%	±10%	Equivalent
Current Rating (Amps)	305 mA	140 mA	Substitute Limited
DC Resistance (Max)	2 Ohm	2 Ohm	Equivalent
Shielding	Unshielded	Unshielded	Equivalent
Core Material	Ferrite	Ferrite	Equivalent
Q @ Frequency	30 @ 7.9 MHz	30 @ 7.96 MHz	Equivalent
Self Resonant Frequency	35 MHz	40 MHz	Compatible
Operating Temperature Range	-55°C to 125°C	-40°C to 125°C	Substitute Limited
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	1210 (3225 Metric)	Nonstandard	Footprint Compatible
Size / Dimension	0.128" L x 0.095" W (3.25mm x 2.42mm)	0.126" L x 0.098" W (3.20mm x 2.50mm)	Compatible
Height - Seated (Max)	0.101" (2.57mm)	0.087" (2.20mm)	Compatible
RoHS Status	RoHS Non-Compliant	ROHS3 Compliant	Upgrade Available

Engineering Selection Recommendations

Primary Part (1210-822K): The 1210-822K remains the specified component for applications requiring the full 305 mA current rating and extended low-temperature operation to -55°C. This part is Active status and suitable for standard procurement. RoHS non-compliance status must be verified against end-product regulatory requirements.

Substitute Part (CM322522-8R2KL): The CM322522-8R2KL is substitutable for applications where current requirements do not exceed 140 mA and minimum operating temperature does not fall below -40°C. This Bourns component offers ROHS3 compliance, providing regulatory advantage for products subject to RoHS directives. Physical dimensions are compatible with 1210 land patterns, though the package is classified as nonstandard. Both parts share equivalent inductance, tolerance, DC resistance, and Q factor characteristics at test frequency.

Compliance Consideration: Selection between these parts should account for RoHS compliance requirements. The 1210-822K is RoHS non-compliant, while CM322522-8R2KL is ROHS3 compliant. Both parts are REACH unaffected and classified under ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can CM322522-8R2KL replace 1210-822K in all applications?

A: No. The CM322522-8R2KL is suitable only for applications where circuit current does not exceed 140 mA and minimum operating temperature remains above -40°C. The 1210-822K supports 305 mA and operates to -55°C. Verify application current requirements and temperature specifications before substitution.

Q: Are the physical dimensions compatible?

A: Yes. The CM322522-8R2KL dimensions (3.20mm x 2.50mm x 2.20mm) are compatible with 1210 (3225 Metric) land patterns. The height difference (2.20mm versus 2.57mm) is within acceptable assembly tolerances for surface mount placement.

Q: What is the difference between the package classifications?

A: The 1210-822K uses the standard 1210 (3225 Metric) package designation. The CM322522-8R2KL is classified as nonstandard package but maintains footprint compatibility with 1210 land patterns. Both are surface mount components suitable for automated assembly.

Q: How do the electrical characteristics compare?

A: Both inductors provide 8.2 µH inductance with ±10% tolerance and 2Ohm maximum DC resistance. Q factor is equivalent at 30 @ test frequency (7.9 MHz and 7.96 MHz respectively). Self-resonant frequency differs slightly (35 MHz versus 40 MHz), which is within acceptable industrial variation for ferrite core inductors.

Q: What is the RoHS compliance impact?

A: The 1210-822K is RoHS non-compliant, while CM322522-8R2KL is ROHS3 compliant. For products subject to RoHS directives, the Bourns component provides regulatory compliance. Verify end-product RoHS requirements to determine if compliance is mandatory.

Q: Can I use CM322522-8R2KL in a -55°C environment?

A: No. The CM322522-8R2KL operating temperature range is -40°C to 125°C. Applications requiring operation at -55°C must use the 1210-822K or equivalent component rated to that temperature.

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