SDR1005-151K Equivalent & Substitute Parts

Part Overview

The SDR1005-151K is a 150 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 800 mA continuous current with a maximum DC resistance of 590mOhm. This component is classified as obsolete, making equivalent substitutes necessary for new designs and production continuity. The part operates across the industrial temperature range of -40°C to 125°C and is ROHS3 compliant with unlimited moisture sensitivity rating.

Key Parameters

Parameter	Value
Inductance	150 µH
Inductance Tolerance	±10%
Current Rating	800 mA
Current - Saturation (Isat)	1 A
DC Resistance (DCR)	590 mOhm Max
Shielding	Unshielded
Core Material	Ferrite
Mounting Type	Surface Mount
Operating Temperature	-40°C to 125°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the SDR1005-151K is determined by the following critical parameters:

Inductance value: 150 µH (exact match required)
Current rating: minimum 800 mA continuous
DC resistance: 590 mOhm or lower
Saturation current: 1 A or higher
Mounting type: Surface Mount
Shielding configuration: Unshielded
Operating temperature range: must encompass -40°C to 125°C
RoHS compliance: ROHS3 Compliant

Two substitute categories are identified:

Direct Equivalent: SDR1005-151KL (Bourns Inc.) - identical electrical specifications with active product status and tape & reel packaging availability.

Similar Equivalent: P0752.154NL and P0752.154NLT (Pulse Electronics) - meet core electrical requirements with minor parameter variations in tolerance and DC resistance, available in both bulk and tape & reel packaging.

Parameter Comparison

Parameter	SDR1005-151K (Main)	SDR1005-151KL (Direct)	P0752.154NL (Similar)	P0752.154NLT (Similar)
Manufacturer	Bourns Inc.	Bourns Inc.	Pulse Electronics	Pulse Electronics
Inductance	150 µH	150 µH	150 µH	150 µH
Inductance Tolerance	±10%	±10%	±20%	±20%
Current Rating	800 mA	800 mA	1 A	1 A
Saturation Current (Isat)	1 A	1 A	1 A	1 A
DC Resistance (DCR)	590 mOhm Max	590 mOhm Max	570 mOhm Max	570 mOhm Max
Shielding	Unshielded	Unshielded	Unshielded	Unshielded
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 130°C	-40°C to 130°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Bulk	Tape & Reel (TR)	Bulk	Tape & Reel (TR)

Engineering Selection Recommendations

SDR1005-151KL is the primary substitute for SDR1005-151K. Both parts are manufactured by Bourns Inc. with identical electrical specifications, core material (ferrite drum core), and operating temperature range. The SDR1005-151KL maintains active product status and is available in tape & reel packaging, supporting automated assembly processes. This substitution requires no circuit redesign or thermal analysis.

P0752.154NL and P0752.154NLT (Pulse Electronics) are secondary substitutes suitable when SDR1005-151KL availability is constrained. These parts meet all critical electrical requirements with the following considerations: inductance tolerance is ±20% versus ±10% for the main part, DC resistance is 570 mOhm (20 mOhm lower), and operating temperature extends to 130°C. Both Pulse Electronics parts are ROHS3 compliant and carry unlimited moisture sensitivity rating. The P0752.154NLT variant provides tape & reel packaging for production environments.

All substitute parts maintain unshielded configuration, surface mount compatibility, and ferrite-based core construction where specified.

Frequently Asked Questions (FAQ)

Q: Can SDR1005-151KL be used as a direct replacement for SDR1005-151K?

A: Yes. SDR1005-151KL is a direct equivalent with identical inductance (150 µH), current rating (800 mA), DC resistance (590 mOhm max), and operating temperature range (-40°C to 125°C). The primary difference is product status (active versus obsolete) and packaging format (tape & reel availability).

Q: What are the key differences between Bourns and Pulse Electronics substitutes?

A: SDR1005-151KL (Bourns) maintains ±10% inductance tolerance and identical DC resistance. P0752.154NL and P0752.154NLT (Pulse Electronics) feature ±20% inductance tolerance and 570 mOhm DC resistance (lower by 20 mOhm). Both Pulse parts support higher operating temperature (130°C maximum). All three substitutes meet the 800 mA minimum current requirement and 1 A saturation specification.

Q: Are packaging differences significant for substitution?

A: Packaging format affects procurement and assembly processes. SDR1005-151K and P0752.154NL are supplied in bulk. SDR1005-151KL and P0752.154NLT are supplied in tape & reel format, suitable for automated pick-and-place assembly. Electrical performance is independent of packaging format.

Q: Do all substitutes meet compliance requirements?

A: Yes. SDR1005-151K, SDR1005-151KL, P0752.154NL, and P0752.154NLT are all ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). All parts carry REACH Unaffected status and EAR99 export classification.

Q: What is the impact of ±20% inductance tolerance in Pulse Electronics parts?

A: The Pulse Electronics substitutes (P0752.154NL and P0752.154NLT) carry ±20% inductance tolerance compared to ±10% for the Bourns parts. Circuit designs must accommodate this wider tolerance band. For applications requiring tighter inductance control, SDR1005-151KL is the preferred substitute.

Q: Can these parts be used interchangeably in the same PCB footprint?

A: All substitutes are surface mount components with nonstandard package dimensions. Physical dimensions vary slightly: SDR1005-151K and SDR1005-151KL measure 0.500" L × 0.394" W × 0.197" H; P0752.154NL and P0752.154NLT measure 0.510" L × 0.370" W × 0.215" H. PCB layout verification is required to confirm footprint compatibility.

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