PM0805-8N2M Equivalent & Substitute Parts

Part Overview

The PM0805-8N2M is an 8.2 nH unshielded drum core wirewound inductor rated for 600 mA with a maximum DC resistance of 120mOhm, packaged in 0805 (2012 Metric) surface mount format. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The primary electrical characteristics—inductance value, current rating, and package form factor—define the substitution criteria for this component category.

Substiute Parts

PM0805-8N2M

Bourns Inc.In Stock: 731PM0805-8N2M Datasheet

Current PartRFQ

PM0805-8N2M-RC

Bourns Inc.In Stock: 3339PM0805-8N2M-RC Datasheet

DirectRFQ

CW201212-8N2J

Bourns Inc.In Stock: 61175CW201212-8N2J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PM0805-8N2M is determined by the following mandatory electrical and mechanical parameters:

• Inductance Value: 8.2 nH (primary selection criterion)
• Current Rating: 600 mA minimum
• Package / Case: 0805 (2012 Metric) surface mount
• Mounting Type: Surface mount
• Shielding Configuration: Unshielded
• Component Type: Drum core wirewound inductor

The substitute parts PM0805-8N2M-RC and CW201212-8N2J meet these core requirements. Both maintain the 8.2 nH inductance, 600 mA current rating, and 0805 package specification. Variations in DC resistance, core material, tolerance, and product status are secondary parameters that do not prevent functional substitution but may affect circuit performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

PM0805-8N2M-RC is the direct manufacturer equivalent from Bourns Inc. This part maintains the same base product number (PM0805) and series designation. It is currently in active production status with ROHS3 compliance certification. The primary advantage is reduced DC resistance (60mOhm versus 120mOhm), which decreases power dissipation in the inductor. The operating temperature range is -40°C to 125°C, which is narrower than the original part but suitable for most commercial and industrial applications.

CW201212-8N2J is an alternative substitute from Bourns Inc. in the CW201212 series. This part offers tighter inductance tolerance (±5% versus ±20%), improved Q factor, and higher self-resonant frequency. It is also ROHS3 compliant and in active production. The CW201212-8N2J provides superior high-frequency performance characteristics while maintaining electrical compatibility with the original PM0805-8N2M specification.

Both substitute parts are suitable for direct replacement in new designs. Selection between PM0805-8N2M-RC and CW201212-8N2J depends on circuit requirements for tolerance, DC resistance, and frequency response characteristics.

Frequently Asked Questions (FAQ)

Q: Can PM0805-8N2M-RC be used as a direct replacement for PM0805-8N2M?

A: Yes. Both parts share identical inductance (8.2 nH), current rating (600 mA), and 0805 package specification. The PM0805-8N2M-RC is the active production equivalent and is electrically compatible for direct substitution.

Q: What is the significance of the lower DC resistance in PM0805-8N2M-RC?

A: The PM0805-8N2M-RC has 60mOhm DC resistance compared to 120mOhm in the original part. Lower DC resistance reduces resistive losses and heat generation during operation, improving circuit efficiency.

Q: How does CW201212-8N2J differ from PM0805-8N2M-RC?

A: CW201212-8N2J offers tighter inductance tolerance (±5% versus ±20%) and higher Q factor (60 @ 1GHz). Both have identical 60mOhm DC resistance and 0805 package. The CW201212-8N2J is suitable when tighter tolerance and improved frequency response are required.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both PM0805-8N2M-RC and CW201212-8N2J are ROHS3 compliant, whereas the original PM0805-8N2M is RoHS non-compliant.

Q: Does the operating temperature range difference affect substitution?

A: The substitute parts operate from -40°C to 125°C, compared to -55°C to 125°C for the original part. For applications requiring operation below -40°C, the original specification must be maintained. For standard commercial and industrial temperature ranges, the substitutes are suitable.

Q: Are the 0805 packages physically identical?

A: Yes. All three parts use the 0805 (2012 Metric) package with identical dimensions (2.10mm L x 1.50mm W) and seated height (1.50mm maximum). They are mechanically interchangeable on PCB layouts.