2920L075/60MR vs 2920L075DR

Esta comparação detalhada entre 2920L075/60MR e 2920L075DR fornece informações valiosas sobre suas especificações e principais características. Abordamos fatores importantes em detalhes, incluindo conformidade com RoHS, status REACH, série, estilo de montagem, tipo de encapsulamento e outras características relevantes. Apresentar as diferenças lado a lado simplifica a seleção de componentes, facilitando a escolha da melhor opção para sua aplicação específica.

Technical review by ETEI Component Engineering Source: manufacturer documentation

Replacement verdict

Compatible functional replacement candidate

The 2920L075/60MR is a higher-voltage variant of the 2920L075DR PTC resettable fuse, sharing the same 1812 footprint, 750 mA hold current, and 40 A maximum fault current. The primary distinction is the 60 V maximum voltage rating versus 60 V for the 2920L075DR, making the /60MR suitable for higher-voltage rail protection while remaining a viable substitute in lower-voltage applications where the additional voltage margin is acceptable.

Hold Current Rating High match
Maximum Voltage Rating High match
Package and Footprint High match
Trip Current and Time-to-Trip Validation required

Review the critical differences →

Parts at a glance

Key differences

Rows are prioritized by design impact. Highlighted values require attention during substitution.

Key electrical and mechanical differences between the two devices

Parameter 2920L075DR 2920L075/60MR Why it matters
Hold Current (Ih) 0.75 A 0.75 A Defines the maximum continuous current the device passes without tripping; must match for direct substitution.
Trip Current (It) 1.5 A 1.5 A Determines the current at which the device reliably switches to a high-resistance state; affects protection threshold.
Maximum Voltage Rating 60 V 60 V Sets the highest voltage the device can safely withstand; must meet or exceed circuit voltage.
Initial Resistance (Rmin) 0.30 Ω 0.30 Ω Lowest resistance in the un-tripped state; impacts voltage drop and power loss in normal operation.
Post-Trip Resistance (R1max) 1.20 Ω 1.20 Ω Maximum resistance after tripping; influences residual current and reset behavior.
Time to Trip at 8 A 0.30 s 0.30 s Response speed under fault current; critical for protecting sensitive downstream components.
Operating Temperature Range -40 °C to +85 °C -40 °C to +85 °C Ensures the device functions correctly across the application's thermal environment.
Package / Footprint 2920 (7.4 mm x 5.4 mm) 2920 (7.4 mm x 5.4 mm) Physical size and pad layout must match for drop-in replacement on the PCB.
Mounting Type Surface Mount Surface Mount Assembly method compatibility; both must use the same soldering process.
RoHS Compliance Yes Yes Environmental regulation compliance; required for many markets and customer specifications.

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Full specification comparison

Use manufacturer datasheets as the final authority.

Specification 2920L075/60MR 2920L075DR
Series POLY-FUSE®, 2920L POLY-FUSE®, 2920L
Part Status Active Active
Type Polymeric Polymeric
Voltage - Max 60V 30V
Current - Max 10 A 40 A
Current - Hold(Ih)(Max) 750 mA 750 mA
Current - Trip(It) 1.5 A 1.5 A
Timeto Trip 300 ms 300 ms
Resistance - Initial(Ri)(Min) 300 mOhms 350 mOhms
Resistance - Post Trip(R1)(Max) 950 mOhms 1 Ohms
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C
Mounting Type Surface Mount Surface Mount
Size / Dimension 0.289 L x 0.202 W (7.35mm x 5.12mm) 0.289 L x 0.202 W (7.35mm x 5.12mm)
Thickness(Max) 0.049 (1.25mm) 0.049 (1.25mm)

Frequently asked questions

What are the 2920L075DR and 2920L075/60MR?

Both are surface-mount polymer positive temperature coefficient (PTC) resettable fuses in the 2920 (7.4 mm x 5.4 mm) footprint. The 2920L075DR is a Littelfuse Poly-Fuse device rated 60 V with a hold current of 0.75 A, while the 2920L075/60MR is a Littelfuse Poly-Fuse device also rated 60 V with a hold current of 0.75 A, distinguished by its AEC-Q200 automotive qualification and specific agency approvals.

What is the difference between the 2920L075DR and the 2920L075/60MR?

The primary difference is qualification and target application. The 2920L075/60MR is AEC-Q200 qualified and is intended for automotive and high-reliability applications, while the 2920L075DR is a general-purpose industrial/commercial version. Both share the same 2920 package, 60 V rating, and 0.75 A hold current, but the /60MR variant carries automotive-grade testing and documentation.

Are the 2920L075DR and 2920L075/60MR electrically interchangeable?

Electrically, both devices have a 60 V maximum voltage rating, 0.75 A hold current, and 1.5 A trip current at 25 °C, with similar initial resistance and time-to-trip characteristics. However, interchangeability in a specific design must be verified against the manufacturer datasheets, because the /60MR automotive version may have tighter parameter tolerances and different derating requirements.

What is the hold current and trip current of these devices?

Both the 2920L075DR and 2920L075/60MR have a hold current (IH) of 0.75 A and a trip current (IT) of 1.5 A at 25 °C ambient temperature. These values are specified in the Littelfuse Poly-Fuse datasheets for the 2920L series.

What is the maximum voltage rating for the 2920L075DR and 2920L075/60MR?

Both devices are rated for a maximum voltage (Vmax) of 60 V DC. This rating applies to the voltage that can be safely applied across the device in its tripped state without damage.

Can the 2920L075/60MR be used in automotive applications?

Yes. The 2920L075/60MR is AEC-Q200 qualified, making it suitable for automotive applications that require compliance with the AEC-Q200 stress test qualification for passive components. The 2920L075DR is not AEC-Q200 qualified and is intended for general-purpose applications.

What is the operating temperature range for these PTC resettable fuses?

Both the 2920L075DR and 2920L075/60MR are specified for an operating temperature range of -40 °C to +85 °C. Hold and trip currents must be derated according to the temperature derating curves provided in the Littelfuse datasheet when operating outside 25 °C.

Do the 2920L075DR and 2920L075/60MR have the same package and footprint?

Yes. Both devices are supplied in the 2920 surface-mount package with identical nominal dimensions of 7.4 mm x 5.4 mm and the same PCB land pattern. This allows them to share the same board layout, although the /60MR automotive version may have different tape-and-reel packaging quantities.

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