PICOASMDC075S-2 Equivalent & Substitute Parts

Part Overview

The PICOASMDC075S-2 is a Polymeric PTC Resettable Fuse manufactured by Littelfuse Inc. as part of the PolySwitch® picoASMDC series. This surface mount component is designed for overcurrent protection in electronic circuits with a maximum voltage rating of 6V and a hold current of 750 mA. The device operates across a temperature range of -40°C to 85°C and carries AEC-Q200 automotive qualification. Substitute parts are identified to support component availability, inventory management, and design flexibility while maintaining equivalent electrical and mechanical performance.

Key Parameters

Parameter	Value
Voltage - Max	6V
Current - Hold (Ih) (Max)	750 mA
Current - Trip (It)	1.5 A
Current - Max	40 A
Time to Trip	200 ms
Resistance - Initial (Ri) (Min)	100 mOhms
Resistance - Post Trip (R1) (Max)	350 mOhms
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	0805 (2012 Metric), Concave
Size / Dimension	0.083" L x 0.055" W (2.10mm x 1.40mm)
Thickness (Max)	0.037" (0.93mm)
Type	Polymeric
Ratings	AEC-Q200
Product Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the PICOASMDC075S-2 are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are defined by the following key parameters:

Voltage Rating: Maximum voltage must equal 6V
Current - Hold (Ih): Maximum hold current must equal 750 mA
Current - Trip (It): Trip current must equal 1.5 A
Current - Max: Maximum current must equal 40 A
Time to Trip: Response time must equal 200 ms
Resistance - Initial (Ri): Minimum initial resistance must equal 100 mOhms
Resistance - Post Trip (R1): Maximum post-trip resistance must equal 350 mOhms
Operating Temperature Range: Must support -40°C to 85°C
Package / Case: Must be 0805 (2012 Metric), Concave
Mounting Type: Must be Surface Mount
Type: Must be Polymeric PTC Resettable Fuse
Ratings: Must include AEC-Q200 qualification

All substitute parts listed maintain identical electrical performance characteristics and physical form factor compatibility with the main part number.

Parameter Comparison

Parameter	PICOASMDC075S-2	RF5054-000
Manufacturer	Littelfuse Inc.	Littelfuse Inc.
Series	PolySwitch® picoASMDC	PolySwitch® picoASMDC
Type	Polymeric	Polymeric
Voltage - Max	6V	6V
Current - Hold (Ih) (Max)	750 mA	750 mA
Current - Trip (It)	1.5 A	1.5 A
Current - Max	40 A	40 A
Time to Trip	200 ms	200 ms
Resistance - Initial (Ri) (Min)	100 mOhms	100 mOhms
Resistance - Post Trip (R1) (Max)	350 mOhms	350 mOhms
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Ratings	AEC-Q200	AEC-Q200
Mounting Type	Surface Mount	Surface Mount
Package / Case	0805 (2012 Metric), Concave	0805 (2012 Metric), Concave
Size / Dimension	0.083" L x 0.055" W (2.10mm x 1.40mm)	0.083" L x 0.055" W (2.10mm x 1.40mm)
Thickness (Max)	0.037" (0.93mm)	0.037" (0.93mm)
Product Status	Active	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Packaging	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Both PICOASMDC075S-2 and RF5054-000 are active products manufactured by Littelfuse Inc. with identical electrical specifications and physical dimensions. Selection between these parts is based on availability and supply chain requirements rather than technical performance differences.

The PICOASMDC075S-2 carries AEC-Q200 automotive qualification and is suitable for applications requiring automotive-grade reliability. The RF5054-000 maintains the same AEC-Q200 rating and equivalent performance characteristics.

Both components are classified as Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

The 0805 (2012 Metric) surface mount package with concave profile is compatible with standard pick-and-place assembly equipment and reflow soldering processes.

Frequently Asked Questions (FAQ)

Q: Can RF5054-000 be used as a direct replacement for PICOASMDC075S-2?

A: Yes. Both parts are manufactured by Littelfuse Inc., belong to the PolySwitch® picoASMDC series, and share identical electrical parameters including voltage rating (6V), hold current (750 mA), trip current (1.5 A), and operating temperature range (-40°C to 85°C). Physical dimensions and package specifications are also identical.

Q: Are there any differences in the 0805 package between these parts?

A: No. Both parts use the 0805 (2012 Metric) surface mount package with concave profile. Dimensions are 0.083" L x 0.055" W (2.10mm x 1.40mm) with a maximum thickness of 0.037" (0.93mm).

Q: Do both parts meet automotive qualification standards?

A: Yes. Both PICOASMDC075S-2 and RF5054-000 carry AEC-Q200 ratings, qualifying them for automotive applications.

Q: What is the significance of the 750 mA hold current specification?

A: The 750 mA hold current (Ih) is the maximum continuous current the device can carry without tripping. Currents exceeding 1.5 A (the trip current) will cause the device to transition to a high-resistance state within 200 milliseconds.

Q: Are special handling procedures required for these components?

A: No. Both parts are classified as Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity precautions are necessary during storage, handling, or assembly.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts are surface mount components with identical footprints and are compatible with standard reflow soldering processes and automated assembly equipment.

Q: What is the initial resistance specification?

A: The minimum initial resistance (Ri) is 100 mOhms for both parts. After a trip event, the post-trip resistance (R1) increases to a maximum of 350 mOhms, providing overcurrent protection by limiting current flow.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message