PM1608-2R2M-RC Equivalent & Substitute Parts

Part Overview

The PM1608-2R2M-RC is a 2.2 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., designed for surface mount applications. This component is rated for 2.4 A continuous current with a maximum DC resistance of 70 mOhm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and is ROHS3 compliant, making it suitable for modern electronic assemblies requiring reliable inductance in compact form factors.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or inventory limitations. The SDR6603-2R2M series provides electrical and mechanical equivalence while maintaining identical performance specifications.

Key Parameters

Parameter	Value
Inductance	2.2 µH
Tolerance	±20%
Current Rating	2.4 A
Current - Saturation (Isat)	2.3 A
DC Resistance (DCR)	70 mOhm Max
Core Material	Ferrite
Shielding	Unshielded
Q @ Frequency	18 @ 7.96 MHz
Self Resonant Frequency	90 MHz
Operating Temperature Range	-40°C to 125°C
Mounting Type	Surface Mount
Package Type	Nonstandard
Physical Dimensions	0.260" L x 0.175" W (6.60 mm x 4.45 mm)
Height - Seated (Max)	0.115" (2.92 mm)
Packaging Format	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

The SDR6603-2R2M qualifies as a direct substitute for the PM1608-2R2M-RC based on strict electrical and mechanical parameter equivalence. Both components share identical specifications across all critical selection criteria:

Electrical parameters match completely: 2.2 µH inductance with ±20% tolerance, 2.4 A current rating, 2.3 A saturation current, and 70 mOhm maximum DC resistance. Both employ ferrite drum core construction with unshielded configuration and deliver identical Q factor performance at 7.96 MHz with 90 MHz self-resonant frequency.

Mechanical compatibility is confirmed through identical physical dimensions (0.260" L x 0.175" W / 6.60 mm x 4.45 mm) and seated height (0.115" / 2.92 mm). Both components utilize surface mount technology in nonstandard package format with Tape & Reel packaging.

Environmental and compliance specifications are equivalent: both operate across -40°C to 125°C temperature range, maintain ROHS3 compliance, carry MSL 1 rating, and are REACH unaffected. Both manufacturers are Bourns Inc., ensuring consistent quality and reliability standards.

Parameter Comparison

Parameter	PM1608-2R2M-RC	SDR6603-2R2M
Manufacturer	Bourns Inc.	Bourns Inc.
Inductance	2.2 µH	2.2 µH
Tolerance	±20%	±20%
Current Rating (Amps)	2.4 A	2.4 A
Current - Saturation (Isat)	2.3 A	2.3 A
DC Resistance (DCR)	70 mOhm Max	70 mOhm Max
Core Material	Ferrite	Ferrite
Shielding	Unshielded	Unshielded
Q @ Frequency	18 @ 7.96 MHz	18 @ 7.96 MHz
Self Resonant Frequency	90 MHz	90 MHz
Operating Temperature Range	-40°C to 125°C	-40°C to 125°C
Mounting Type	Surface Mount	Surface Mount
Package Type	Nonstandard	Nonstandard
Physical Dimensions	0.260" L x 0.175" W (6.60 mm x 4.45 mm)	0.260" L x 0.175" W (6.60 mm x 4.45 mm)
Height - Seated (Max)	0.115" (2.92 mm)	0.115" (2.92 mm)
Packaging Format	Tape & Reel (TR)	Tape & Reel (TR)
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both the PM1608-2R2M-RC and SDR6603-2R2M maintain Active product status from Bourns Inc., confirming ongoing manufacturer support and availability. Selection between these components should be based on supply chain considerations and inventory availability rather than technical performance differences.

ROHS3 compliance and REACH unaffected status are equivalent across both parts, ensuring regulatory compatibility for applications subject to environmental restrictions. MSL 1 rating on both components eliminates moisture sensitivity concerns during storage and handling.

The SDR6603-2R2M series offers 1452 pieces in current inventory compared to 1116 pieces for the PM1608-2R2M-RC, providing additional supply security for high-volume production requirements.

Frequently Asked Questions (FAQ)

Q: Can the SDR6603-2R2M replace the PM1608-2R2M-RC in existing designs?

A: Yes. Both components are electrically and mechanically identical across all specified parameters. Direct substitution is possible without circuit redesign or PCB layout modification.

Q: Are there differences in inductance frequency testing between these parts?

A: The PM1608-2R2M-RC specifies inductance frequency testing at 7.96 MHz, while the SDR6603-2R2M specifies testing at 100 kHz. Both components deliver identical inductance values of 2.2 µH and equivalent Q factor performance at 7.96 MHz, confirming functional equivalence.

Q: Do both parts meet the same environmental compliance standards?

A: Yes. Both the PM1608-2R2M-RC and SDR6603-2R2M are ROHS3 compliant, REACH unaffected, and carry MSL 1 rating. Environmental and regulatory requirements are identical.

Q: What is the significance of the nonstandard package type?

A: Both components utilize nonstandard package configuration, indicating they do not conform to standard IPC package designations. Physical dimensions and mounting characteristics are identical, ensuring PCB footprint compatibility.

Q: Are there any current rating or thermal differences?

A: No. Both parts maintain 2.4 A continuous current rating, 2.3 A saturation current, and operate across -40°C to 125°C temperature range. Thermal and electrical performance characteristics are equivalent.

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