S0603-47NJ3B Equivalent & Substitute Parts

Part Overview

The S0603-47NJ3B is a 47 nH unshielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications in the 0603 (1608 Metric) package. This active product is rated for 600 mA continuous current with a maximum DC resistance of 310 mOhm and operates across a temperature range of -55°C to 125°C. Substitute parts are identified when equivalent electrical and mechanical parameters can support the same functional requirements in high-frequency circuit applications.

Key Parameters

Parameter	Specification
Inductance	47 nH
Inductance Tolerance	±5%
Current Rating	600 mA
DC Resistance (DCR)	310 mOhm Max
Q Factor @ Frequency	35 @ 200 MHz
Self Resonant Frequency	2 GHz
Operating Temperature Range	-55°C to 125°C
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount
Core Material	Alumina
Shielding	Unshielded

Substitute Part Grouping Explanation

Substitution of the S0603-47NJ3B is determined by strict equivalence in the following critical parameters:

Mandatory Equivalence Parameters:

Inductance value: 47 nH
Inductance tolerance: ±5%
Current rating: 600 mA minimum
Package / Case: 0603 (1608 Metric)
Core type: Drum core, wirewound with alumina material
Shielding configuration: Unshielded
Mounting type: Surface mount

Allowable Parameter Variations:

DC resistance: Substitute parts with DCR ≤ 310 mOhm are acceptable
Self-resonant frequency: Parts rated ≥ 2 GHz are acceptable
Operating temperature: Parts supporting the full -55°C to 125°C range or extended ranges are acceptable
Q factor: Equivalent or superior values at specified frequencies are acceptable
RoHS and REACH compliance status may differ from the original part

The identified substitute parts CW160808-47NJ and PM0603-47NJ-RC meet all mandatory equivalence parameters.

Parameter Comparison

Parameter	S0603-47NJ3B (API Delevan)	CW160808-47NJ (Bourns)	PM0603-47NJ-RC (Bourns)
Manufacturer	API Delevan Inc.	Bourns Inc.	Bourns Inc.
Inductance	47 nH	47 nH	47 nH
Inductance Tolerance	±5%	±5%	±5%
Current Rating	600 mA	600 mA	600 mA
DC Resistance	310 mOhm Max	280 mOhm	280 mOhm
Q @ Frequency	35 @ 200 MHz	35 @ 250 MHz	35 @ 250 MHz
Self Resonant Frequency	2 GHz	2.1 GHz	2.1 GHz
Operating Temperature Range	-55°C to 125°C	-40°C to 125°C	-40°C to 125°C
Package / Case	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)
Physical Dimensions (L x W)	0.062" x 0.035" (1.58mm x 0.89mm)	0.065" x 0.041" (1.65mm x 1.05mm)	0.065" x 0.041" (1.65mm x 1.05mm)
Height - Seated (Max)	0.040" (1.02mm)	0.047" (1.20mm)	0.047" (1.20mm)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Format	Not specified	Tape & Reel	Tape & Reel

Engineering Selection Recommendations

Both CW160808-47NJ and PM0603-47NJ-RC are electrically and mechanically equivalent to the S0603-47NJ3B for 47 nH inductance applications at 600 mA current ratings in 0603 surface mount packages. The substitute parts offer improved DC resistance specifications (280 mOhm versus 310 mOhm) and ROHS3 compliance status.

Physical dimensions differ slightly between the original and substitute parts. The S0603-47NJ3B measures 0.062" × 0.035" with a maximum seated height of 0.040", while both Bourns substitutes measure 0.065" × 0.041" with a maximum seated height of 0.047". PCB layout and clearance verification is required when substituting between these dimensions.

The substitute parts are rated for -40°C to 125°C operation, which covers the upper portion of the S0603-47NJ3B temperature range (-55°C to 125°C). Application requirements below -40°C require the original S0603-47NJ3B.

Frequently Asked Questions (FAQ)

Q: Can CW160808-47NJ and PM0603-47NJ-RC be used interchangeably with S0603-47NJ3B?

A: Both substitute parts meet the electrical requirements for 47 nH inductance, 600 mA current, and ±5% tolerance specifications. Physical dimensions and operating temperature ranges differ and must be validated for your specific PCB layout and thermal environment.

Q: What is the difference between CW160808-47NJ and PM0603-47NJ-RC?

A: Both parts are manufactured by Bourns Inc. with identical electrical specifications and physical dimensions. The primary difference is the series designation (CW160808 versus PM0603) and base product number, which represent different product lines within Bourns' inductor portfolio. Electrical and mechanical performance are equivalent.

Q: Why does the substitute part have lower DC resistance?

A: The substitute parts (CW160808-47NJ and PM0603-47NJ-RC) specify 280 mOhm DC resistance compared to the 310 mOhm maximum of S0603-47NJ3B. Lower DC resistance is beneficial for power loss reduction and thermal performance in high-current applications and does not compromise compatibility.

Q: Are the physical dimension differences significant?

A: The substitute parts are slightly larger (0.065" × 0.041" versus 0.062" × 0.035") with greater seated height (0.047" versus 0.040"). These differences may impact PCB routing density and clearance to adjacent components. Verify PCB footprint compatibility before substitution.

Q: What is the temperature operating range consideration?

A: The S0603-47NJ3B is rated -55°C to 125°C, while both substitute parts are rated -40°C to 125°C. If your application requires operation below -40°C, the original S0603-47NJ3B is required. For applications within -40°C to 125°C, the substitute parts are suitable.

Q: Are there RoHS compliance implications?

A: The S0603-47NJ3B is RoHS non-compliant, while both substitute parts are ROHS3 compliant. If your design or regulatory requirements mandate RoHS compliance, the substitute parts (CW160808-47NJ or PM0603-47NJ-RC) satisfy this requirement.

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