MF72-008D7 Equivalent & Substitute Parts

Part Overview

The MF72-008D7 is an inrush current limiter manufactured by Cantherm, designed for thermal management in power supply circuits and electronic equipment startup protection. This thermistor operates at 8 Ohms resistance with ±20% tolerance and supports a steady-state maximum current of 1 A. The component features a 9.00mm diameter form factor with 5.00mm lead spacing, suitable for through-hole PCB mounting applications.

The MF72-008D7 maintains Active product status with full ROHS3 compliance and REACH unaffected classification. Substitute parts are identified to address inventory availability, packaging format requirements, or enhanced current-handling specifications while maintaining core electrical and mechanical compatibility.

Substiute Parts

MF72-008D7

CanthermIn Stock: 987MF72-008D7 Datasheet

Current PartRFQ

B57153S0809M000

EPCOS - TDK ElectronicsIn Stock: 884B57153S0809M000 Datasheet

SimilarRFQ

B57153S0809M051

EPCOS - TDK ElectronicsIn Stock: 6829B57153S0809M051 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MF72-008D7 are qualified based on the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Resistance value: 8 Ohms (exact match required)
• Tolerance: ±20% (exact match required)
• Steady-state current rating: minimum 1 A (equal or greater acceptable)
• Resistance at operating current: lower values indicate improved thermal performance

Mechanical Compatibility Criteria:

• Lead spacing: 5.00mm (exact match required for PCB footprint)
• Diameter: acceptable range includes 8.50mm to 9.00mm (minor dimensional variation within assembly tolerance)

Regulatory Compliance Criteria:

• RoHS3 compliance required
• REACH status: unaffected preferred; affected acceptable with supply chain verification

The identified substitutes (B57153S0809M000 and B57153S0809M051) meet all electrical requirements and maintain lead spacing compatibility. Both are manufactured by EPCOS - TDK Electronics and carry Active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: B57153S0809M000

This part is the preferred substitute for the MF72-008D7. It maintains identical electrical specifications (8 Ohms, ±20% tolerance) and lead spacing (5.00mm), ensuring direct PCB compatibility. The enhanced steady-state current rating of 2.2 A exceeds the original 1 A specification, providing improved thermal margin in inrush current limiting applications. The lower resistance at operating current (279 mOhms versus 539 mOhms) indicates superior thermal performance characteristics. Both parts carry Active product status, ROHS3 compliance, and REACH unaffected classification, ensuring regulatory alignment and supply chain continuity.

Secondary Substitute: B57153S0809M051

This part provides identical electrical and mechanical specifications to B57153S0809M000, with the distinction of Cut Tape (CT) packaging format versus Bulk packaging. The CT format accommodates automated assembly processes and tape-and-reel handling. This substitute carries REACH affected status, requiring supply chain verification in regulated markets. Selection of this part is appropriate when packaging format requirements or inventory availability necessitate the alternative.

Dimensional Consideration:

The substitute parts feature an 8.50mm diameter compared to the original 9.00mm. This 0.50mm reduction falls within standard PCB assembly tolerances and does not affect electrical performance or thermal characteristics. PCB footprint verification is recommended for applications with tight mechanical constraints.

Frequently Asked Questions (FAQ)

Q: Can B57153S0809M000 or B57153S0809M051 be used as direct replacements for MF72-008D7?

A: Yes. Both substitute parts maintain the critical electrical parameters: 8 Ohms resistance, ±20% tolerance, and 5.00mm lead spacing. The enhanced current rating (2.2 A versus 1 A) and improved thermal performance (279 mOhms versus 539 mOhms at operating current) make these substitutes functionally superior for inrush current limiting applications.

Q: What is the significance of the lower resistance at operating current in the substitute parts?

A: The resistance value at operating current (279 mOhms for substitutes versus 539 mOhms for the original) indicates thermal behavior during steady-state operation. Lower resistance at operating current reflects improved thermal stability and reduced power dissipation, beneficial for extended operating cycles.

Q: Does the 8.50mm diameter of substitute parts affect PCB compatibility?

A: The 0.50mm diameter reduction is within standard PCB assembly tolerances. Lead spacing remains identical at 5.00mm, ensuring footprint compatibility. Physical clearance verification is recommended only for applications with constrained board layout or mechanical enclosure requirements.

Q: What is the difference between B57153S0809M000 (Bulk) and B57153S0809M051 (Cut Tape)?

A: Both parts are electrically and mechanically identical. The packaging difference addresses supply chain and assembly process requirements. Bulk packaging suits manual assembly and stock management; Cut Tape (CT) packaging accommodates automated pick-and-place equipment and tape-and-reel handling.

Q: Are there regulatory compliance differences between the substitute parts?

A: Both substitutes maintain ROHS3 compliance. B57153S0809M000 carries REACH unaffected status, identical to the original MF72-008D7. B57153S0809M051 carries REACH affected status, requiring supply chain verification in regulated markets or applications with strict material composition requirements.

Q: Can the MF72-008D7 be substituted with either EPCOS part interchangeably?

A: Yes, both EPCOS parts are interchangeable from an electrical and mechanical standpoint. Selection between them depends on packaging requirements (Bulk versus Cut Tape) and regulatory compliance needs (REACH unaffected preferred for unrestricted supply chain).