VTP210F Polymeric PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The VTP210F is a polymeric PTC resettable fuse manufactured by Littelfuse Inc. in the PolySwitch® VTP series, rated for 16V at 2.1A hold current. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part is designed for overcurrent protection in applications requiring automatic reset functionality without component replacement.

Key Parameters

Parameter	Value
Voltage - Max	16V
Current - Hold (Ih) (Max)	2.1 A
Current - Trip (It)	4.7 A
Current - Max	100 A
Time to Trip	5 s
Resistance - Initial (Ri) (Min)	18 mOhms
Resistance - Post Trip (R1) (Max)	60 mOhms
Operating Temperature	-40°C ~ 85°C
Package / Case	Strap
Type	Polymeric

Substitute Part Grouping Explanation

Substitution for the VTP210F is determined by strict equivalence across the following critical parameters:

Voltage rating: 16V maximum
Current hold (Ih): 2.1A maximum
Current trip (It): 4.7A
Time to trip: 5 seconds
Initial resistance (Ri): 18 mOhms minimum
Post-trip resistance (R1): 60 mOhms maximum
Operating temperature range: -40°C to 85°C
Package type: Strap configuration
Component type: Polymeric PTC resettable fuse

All identified substitutes maintain these electrical and mechanical specifications. Variations in physical dimensions (length and thickness) are permitted within the strap package category, as they do not affect electrical performance or circuit compatibility.

Parameter Comparison

Parameter	VTP210F	VTP210GF	VTP210LF	MF-VS210-0
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Bourns Inc.
Series	PolySwitch® VTP	PolySwitch® VTP	PolySwitch® VTP	Multifuse® MF-VS
Product Status	Obsolete	Active	Active	Active
Voltage - Max	16V	16V	16V	16V
Current - Hold (Ih) (Max)	2.1 A	2.1 A	2.1 A	2.1 A
Current - Trip (It)	4.7 A	4.7 A	4.7 A	4.7 A
Current - Max	100 A	100 A	100 A	100 A
Time to Trip	5 s	5 s	5 s	5 s
Resistance - Initial (Ri) (Min)	18 mOhms	18 mOhms	18 mOhms	18 mOhms
Resistance - Post Trip (R1) (Max)	60 mOhms	60 mOhms	60 mOhms	60 mOhms
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	Strap	Strap	Strap	Strap
Type	Polymeric	Polymeric	Polymeric	Polymeric
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agency	CSA, TUV, UL	CSA, TUV, UL	CSA, TUV, UL	cURus, TUV

Engineering Selection Recommendations

VTP210GF and VTP210LF are direct Littelfuse alternatives with active product status. Both maintain identical electrical specifications and dimensional compatibility with the obsolete VTP210F. VTP210GF features a slightly reduced length (23.10mm vs. 26.00mm) while VTP210LF preserves the original 26.00mm length. Both carry full CSA, TUV, and UL certifications.

MF-VS210-0 from Bourns Inc. provides cross-manufacturer equivalence with identical electrical performance. This part carries cURus and TUV certifications and offers the highest inventory availability (10,400 units). Physical dimensions vary slightly (22.00mm length, 5.20mm width, 0.90mm thickness) but remain within strap package specifications.

All three substitutes are ROHS3 compliant and carry REACH Unaffected status, matching the original part's regulatory compliance profile.

Frequently Asked Questions (FAQ)

Q: Can VTP210GF, VTP210LF, and MF-VS210-0 be used interchangeably with VTP210F?

A: Yes. All three parts maintain identical electrical specifications across voltage, current hold, current trip, time to trip, and resistance parameters. Physical dimension variations are permitted within strap package category specifications and do not affect circuit compatibility.

Q: What is the difference between VTP210GF and VTP210LF?

A: Both are Littelfuse PolySwitch® VTP series parts with identical electrical ratings. The primary difference is physical length: VTP210GF measures 23.10mm while VTP210LF measures 26.00mm (matching the original VTP210F). Both are active products with full certifications.

Q: Why would I select MF-VS210-0 over the Littelfuse alternatives?

A: MF-VS210-0 offers equivalent electrical performance with higher inventory availability (10,400 units). It is suitable for applications where cross-manufacturer sourcing is acceptable. Certifications differ slightly (cURus and TUV vs. CSA, TUV, and UL), so application requirements should be verified.

Q: Are there any thermal or mechanical considerations when substituting these parts?

A: All parts operate across the same temperature range (-40°C to 85°C) and use identical strap mounting. Minor physical dimension variations do not affect thermal performance or mechanical installation in standard strap-mount applications.

Q: What certifications apply to all substitute parts?

A: All substitutes carry TUV certification. VTP210GF and VTP210LF additionally carry CSA and UL certifications. MF-VS210-0 carries cURus certification. All are ROHS3 compliant and REACH Unaffected.

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