PICOASMDCH020F-2 Equivalent & Substitute Parts

Part Overview

The PICOASMDCH020F-2 is a Polymeric PTC Resettable Fuse manufactured by Littelfuse Inc. in the PolySwitch® picoASMD series. This surface mount device is rated for 16V maximum voltage with a 200 mA hold current and is packaged in the 0805 (2012 Metric) form factor with concave geometry.

The PICOASMDCH020F-2 is classified as Obsolete. Identification of equivalent substitute parts is necessary to maintain design continuity and ensure component availability for ongoing production, maintenance, and repair applications.

Substiute Parts

PICOASMDCH020F-2

Littelfuse Inc.In Stock: 1016PICOASMDCH020F-2 Datasheet

Current PartRFQ

RF4929-000

Littelfuse Inc.In Stock: 958RF4929-000 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PICOASMDCH020F-2 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Voltage - Max: 16V
• Current - Hold (Ih) (Max): 200 mA
• Current - Trip (It): 700 mA
• Current - Max: 40 A
• Time to Trip: 100 ms
• Resistance - Initial (Ri) (Min): 750 mOhms
• Resistance - Post Trip (R1) (Max): 3.4 Ohms
• Operating Temperature Range: -40°C ~ 125°C

Mechanical Parameters:

• Package / Case: 0805 (2012 Metric), Concave
• Mounting Type: Surface Mount
• Device Type: Polymeric PTC Resettable Fuse

Compliance Parameters:

• RoHS Status: ROHS3 Compliant

Substitute parts must match all electrical specifications, mechanical form factor, and compliance requirements to ensure functional and physical compatibility within the original application circuit.

Parameter Comparison

Engineering Selection Recommendations

The RF4929-000 is a direct parametric equivalent to the PICOASMDCH020F-2. Both components are manufactured by Littelfuse Inc. and share identical electrical specifications, mechanical dimensions, and compliance certifications.

The primary distinction between these parts is product status and series designation. The PICOASMDCH020F-2 is classified as Obsolete, while the RF4929-000 is Active. The RF4929-000 is designated within the Automotive series with AEC-Q101 qualification, whereas the PICOASMDCH020F-2 belongs to the PolySwitch® picoASMD series.

Both components carry AEC-Q200 ratings and ROHS3 compliance. The RF4929-000 is supplied in Tape & Reel (TR) packaging format, which is standard for high-volume production environments.

For applications requiring the PICOASMDCH020F-2, the RF4929-000 provides functional and physical compatibility with no electrical parameter deviations.

Frequently Asked Questions (FAQ)

Q: Can the RF4929-000 be used as a direct replacement for the PICOASMDCH020F-2?

A: Yes. The RF4929-000 matches all electrical parameters, mechanical dimensions, and compliance requirements of the PICOASMDCH020F-2. Both components are 0805 (2012 Metric) surface mount polymeric PTC resettable fuses with identical voltage, current, and thermal specifications.

Q: What is the difference between the PICOASMDCH020F-2 and RF4929-000?

A: The PICOASMDCH020F-2 is Obsolete, while the RF4929-000 is Active. The RF4929-000 is part of the Automotive series with AEC-Q101 qualification. Electrically and mechanically, both components are equivalent.

Q: Are there packaging differences between these parts?

A: The RF4929-000 is supplied in Tape & Reel (TR) packaging. Packaging format does not affect component functionality or physical compatibility on the PCB.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the PICOASMDCH020F-2 and RF4929-000 are ROHS3 Compliant and carry AEC-Q200 ratings. Both are classified under ECCN EAR99 and HTSUS 8533.40.8070.

Q: What are the critical parameters for substitution?

A: Substitution is valid when the following parameters match: Voltage - Max (16V), Current - Hold (200 mA), Current - Trip (700 mA), Operating Temperature Range (-40°C ~ 125°C), Package / Case (0805 Concave), and Mounting Type (Surface Mount). All parameters are identical between these two components.

Q: Can the RF4929-000 be used in non-automotive applications?

A: The RF4929-000 is qualified for automotive applications but is not restricted to automotive use. The component specifications support general industrial and consumer applications within the defined electrical and thermal parameters.