CLF10040T-151M Equivalent & Substitute Parts

Part Overview

The CLF10040T-151M is a 150 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 800 mA continuous current with a maximum DC resistance of 456 mOhm. This surface mount component operates across the temperature range of -40°C to 105°C and is designed for applications requiring fixed inductance in compact form factors.

The CLF10040T-151M is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductance value and current rating.

Key Parameters

Parameter	CLF10040T-151M
Inductance	150 µH
Inductance Tolerance	±20%
Current Rating	800 mA
Current - Saturation (Isat)	1 A
DC Resistance (DCR)	456 mOhm Max
Shielding	Shielded
Core Material	Ferrite
Type	Drum Core, Wirewound
Mounting Type	Surface Mount
Operating Temperature	-40°C to 105°C
Inductance Test Frequency	100 kHz
Size	10.00 mm L x 9.70 mm W x 4.10 mm H
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the CLF10040T-151M are qualified based on the following core electrical and mechanical parameters:

Primary Substitution Criteria:

Inductance value: 150 µH (exact match required)
Inductance tolerance: ±20% or tighter
Core material: Ferrite
Shielding: Shielded configuration
Mounting type: Surface mount
Inductance test frequency: 100 kHz

Secondary Compatibility Parameters:

Current rating: 700 mA minimum (CLF10040T-151M rated 800 mA)
DC resistance: Comparable to original specification
Operating temperature range: Minimum -40°C to 105°C coverage
Saturation current: Adequate margin above rated current
Package form factor: Nonstandard surface mount compatible with original footprint

Substitute parts are grouped into two categories: direct equivalents from active product lines with matching electrical characteristics, and compatible alternatives with enhanced performance specifications or extended temperature ratings.

Parameter Comparison

Parameter	CLF10040T-151M	VLS6045EX-151M	ASPI-104S-151M-T	BPSC00101140151M00	BPSC00101140151T00	CDRH104RT125NP-151MC	CDRR105NP-151MC	DRA124-151-R	SRU1038-151Y
Inductance	150 µH	150 µH	150 µH	150 µH	150 µH	150 µH	150 µH	150 µH	150 µH
Inductance Tolerance	±20%	±20%	±20%	±20%	±30%	±20%	±20%	±20%	±30%
Current Rating (mA)	800	700	850	—	—	860	930	967	900
Saturation Current (Isat)	1 A	900 mA	1.15 A	960 mA	960 mA	1 A	670 mA	1.621 A	800 mA
DC Resistance (mOhm Max)	456	760	506	506	506	448	425	454	358
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded	Shielded	Shielded	Shielded	Shielded
Core Material	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	—	Ferrite
Type	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	—	—	—	Drum Core, Wirewound	Wirewound	Drum Core, Wirewound
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature Range	-40°C to 105°C	-40°C to 105°C	-40°C to 85°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 165°C	-40°C to 125°C
Inductance Test Frequency	100 kHz	100 kHz	100 kHz	100 kHz	100 kHz	100 kHz	1 kHz	100 kHz	100 kHz
Size (mm)	10.00 x 9.70 x 4.10	6.00 x 6.00 x 4.50	10.10 x 10.00 x 4.00	10.50 x 10.30 x 4.00	10.50 x 10.30 x 4.00	10.20 x 10.00 x 4.00	10.40 x 10.40 x 4.80	12.50 x 12.50 x 4.50	10.00 x 10.00 x 4.10
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	—	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

ASPI-104S-151M-T (Abracon LLC) and CDRH104RT125NP-151MC (Sumida America Components Inc.) are the preferred substitutes. Both maintain the 150 µH inductance specification with ±20% tolerance, provide current ratings exceeding the original 800 mA specification (850 mA and 860 mA respectively), and operate across the required temperature range. CDRH104RT125NP-151MC carries AEC-Q200 qualification, suitable for automotive applications. Both are active products with established supply availability.

Secondary Substitutes (Extended Performance):

DRA124-151-R (Eaton - Electronics Division) offers the highest current rating (967 mA) and extended operating temperature range to 165°C, with AEC-Q200 qualification. SRU1038-151Y (Bourns Inc.) provides the lowest DC resistance (358 mOhm) and highest saturation current margin, with active product status and established inventory.

Substitutes with Operational Constraints:

VLS6045EX-151M (TDK Corporation) features a significantly reduced package footprint (6.00 x 6.00 mm) but operates at 700 mA current rating, below the original 800 mA specification. This substitute is suitable only for applications where the reduced current rating is acceptable and space constraints justify the smaller form factor.

BPSC00101140151M00 and BPSC00101140151T00 (Pulse Electronics) are active products with extended temperature range to 125°C. BPSC00101140151T00 carries ±30% inductance tolerance compared to the original ±20% specification.

CDRR105NP-151MC (Sumida America Components Inc.) carries AEC-Q200 qualification and operates to 125°C but exhibits lower saturation current (670 mA) relative to the 800 mA rated current of the original part.

Compliance and Certification:

All active substitute parts comply with ROHS3 or RoHS standards. Parts carrying AEC-Q200 qualification (CDRH104RT125NP-151MC, CDRR105NP-151MC, DRA124-151-R) are suitable for automotive applications requiring automotive-grade component qualification.

Frequently Asked Questions (FAQ)

Q: Can VLS6045EX-151M replace CLF10040T-151M in all applications?

A: VLS6045EX-151M maintains the 150 µH inductance and ±20% tolerance but operates at 700 mA continuous current, below the original 800 mA rating. Substitution is valid only for applications where the circuit operates at or below 700 mA. The significantly smaller package footprint (6.00 x 6.00 mm versus 10.00 x 9.70 mm) may require PCB layout modification.

Q: What is the difference between BPSC00101140151M00 and BPSC00101140151T00?

A: Both parts are manufactured by Pulse Electronics with identical electrical performance and operating temperature range (-40°C to 125°C). The primary difference is inductance tolerance: BPSC00101140151M00 specifies ±20% tolerance, while BPSC00101140151T00 specifies ±30% tolerance. Selection depends on circuit tolerance requirements.

Q: Which substitute offers the best DC resistance performance?

A: SRU1038-151Y (Bourns Inc.) provides the lowest maximum DC resistance at 358 mOhm, compared to the original CLF10040T-151M specification of 456 mOhm. This represents approximately 21% lower resistance, reducing power dissipation in applications with continuous current flow.

Q: Are all substitute parts suitable for automotive applications?

A: Three substitute parts carry AEC-Q200 automotive qualification: CDRH104RT125NP-151MC (Sumida), CDRR105NP-151MC (Sumida), and DRA124-151-R (Eaton). Other substitutes do not carry explicit automotive qualification. Automotive application requirements should be verified against specific design standards.

Q: What is the impact of inductance test frequency differences?

A: The original CLF10040T-151M and most substitutes specify inductance measurement at 100 kHz. CDRR105NP-151MC specifies measurement at 1 kHz. Inductance values measured at different frequencies may exhibit variation due to core material frequency response characteristics. Verification of inductance performance at the application operating frequency is recommended when substituting CDRR105NP-151MC.

Q: Can DRA124-151-R be used in high-temperature applications?

A: DRA124-151-R operates across -40°C to 165°C, the widest temperature range among all substitutes. This extended range supports applications requiring operation at elevated temperatures beyond the original CLF10040T-151M specification of 105°C maximum. DRA124-151-R also carries AEC-Q200 qualification.

Q: How do saturation current specifications affect substitution decisions?

A: Saturation current (Isat) defines the current level at which inductance begins to degrade significantly. The original CLF10040T-151M specifies 1 A saturation current with 800 mA rated current, providing 200 mA margin. Substitutes with lower saturation current relative to rated current (such as CDRR105NP-151MC with 670 mA Isat versus 930 mA rated current) offer reduced margin and may exhibit inductance degradation under peak current conditions. Applications with significant current transients should prioritize substitutes with adequate saturation margin.

Q: What packaging considerations apply to substitute selection?

A: All substitute parts are surface mount components with nonstandard package dimensions. Physical dimensions vary significantly: VLS6045EX-151M measures 6.00 x 6.00 x 4.50 mm, while DRA124-151-R measures 12.50 x 12.50 x 4.50 mm. PCB layout and thermal management considerations may require modification depending on substitute selection. Verify footprint compatibility with existing PCB designs before implementation.

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