CLF12555T-151M Equivalent & Substitute Parts

Part Overview

The CLF12555T-151M is a 150 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 1.1 A continuous current with a maximum DC resistance of 312mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a temperature range of -40°C to 125°C and is suitable for surface mount applications in nonstandard package configurations.

Key Parameters

Parameter	Value
Inductance	150 µH
Inductance Tolerance	±20%
Current Rating	1.1 A
Saturation Current (Isat)	1.8 A
DC Resistance (DCR)	312 mOhm Max
Shielding	Shielded
Core Material	Ferrite
Operating Temperature	-40°C to 125°C
Mounting Type	Surface Mount
Test Frequency	100 kHz

Substitute Part Grouping Explanation

Substitute parts for the CLF12555T-151M are selected based on the following critical parameters:

Inductance Value: All substitutes maintain 150 µH ±20% tolerance
Shielding: All substitutes are shielded configurations
Core Material: Ferrite core construction
Test Frequency: 100 kHz measurement standard
Mounting Type: Surface mount technology
Current Handling: Substitutes must support minimum 1.1 A continuous current or higher
DC Resistance: Substitutes with comparable or lower DCR values maintain circuit performance
Operating Temperature: Substitutes must cover the -40°C to 125°C range or extend it

The four qualified substitute parts meet these criteria while offering active product status and improved availability compared to the obsolete CLF12555T-151M.

Parameter Comparison

Parameter	CLF12555T-151M	VLS6045EX-151M	CDRH125/LDNP-151MC	DRA125-151-R	P1170.154NLT
Manufacturer	TDK Corporation	TDK Corporation	Sumida America Components Inc.	Eaton - Electronics Division	Pulse Electronics
Inductance	150 µH	150 µH	150 µH	150 µH	150 µH
Tolerance	±20%	±20%	±20%	±20%	±20%
Current Rating	1.1 A	700 mA	1.26 A	1.409 A	1.2 A
Saturation Current	1.8 A	900 mA	—	1.785 A	1.2 A
DC Resistance	312 mOhm Max	760 mOhm	280 mOhm Max	273 mOhm	280 mOhm Max
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded
Core Material	Ferrite	Ferrite	Ferrite	—	—
Operating Temperature	-40°C to 125°C	-40°C to 105°C	-40°C to 100°C	-40°C to 165°C	-40°C to 130°C
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	—	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Recommendation: DRA125-151-R

The DRA125-151-R from Eaton - Electronics Division is the preferred substitute. It exceeds the current rating requirement (1.409 A vs. 1.1 A), maintains comparable DC resistance (273 mOhm), and extends the operating temperature range to -40°C to 165°C. This part carries AEC-Q200 qualification and ROHS3 compliance, with active product status ensuring long-term availability.

Secondary Recommendation: CDRH125/LDNP-151MC

The CDRH125/LDNP-151MC from Sumida America Components Inc. provides a current rating of 1.26 A with superior DC resistance (280 mOhm Max). It maintains ROHS3 compliance and active product status. The operating temperature range extends to -40°C to 100°C, which covers the original specification minimum.

Alternative: P1170.154NLT

The P1170.154NLT from Pulse Electronics offers 1.2 A current rating with 280 mOhm Max DC resistance and extends the operating temperature to -40°C to 130°C. This part includes a specified self-resonant frequency of 4.6 MHz and maintains ROHS3 compliance with active product status.

Not Recommended: VLS6045EX-151M

The VLS6045EX-151M has a reduced current rating of 700 mA, which falls below the original 1.1 A specification. Additionally, the DC resistance is significantly higher at 760 mOhm, and the maximum operating temperature is limited to 105°C. This part is suitable only for applications with lower current requirements.

Frequently Asked Questions (FAQ)

Q: Can VLS6045EX-151M be used as a direct replacement for CLF12555T-151M?

A: No. The VLS6045EX-151M has a current rating of 700 mA, which is insufficient for the original 1.1 A specification. Use DRA125-151-R, CDRH125/LDNP-151MC, or P1170.154NLT instead.

Q: What is the primary difference between the substitute parts?

A: The main differences are current rating, DC resistance, and operating temperature range. DRA125-151-R offers the highest current rating (1.409 A) and widest temperature range (-40°C to 165°C). CDRH125/LDNP-151MC and P1170.154NLT provide balanced performance with lower DC resistance values.

Q: Are all substitute parts RoHS compliant?

A: Yes. All four substitute parts are ROHS3 compliant, meeting current environmental regulations.

Q: Do the substitute parts maintain the same inductance value?

A: Yes. All substitute parts maintain 150 µH inductance with ±20% tolerance, matching the original specification.

Q: What packaging format do the substitutes use?

A: All substitute parts are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

Q: Is operating temperature range a critical factor in selection?

A: Yes, if your application operates near the upper temperature limit of 125°C. DRA125-151-R extends this to 165°C, providing additional thermal margin. CDRH125/LDNP-151MC and P1170.154NLT support up to 100°C and 130°C respectively.

Q: Can I use a substitute with lower DC resistance?

A: Yes. Lower DC resistance reduces power dissipation and heat generation, which is beneficial for circuit performance. All recommended substitutes have comparable or lower DC resistance than the original part.

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