16R160BPR Polymeric PTC Resettable Fuse - Equivalent & Substitute Parts

Part Overview

The 16R160BPR is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., part of the POLY-FUSE® and USBR series. This component is rated for 16V maximum voltage with a 1.6A hold current and 3.2A trip current, designed for through-hole radial mounting in disc configuration. The part is currently classified as obsolete, making identification of active equivalent components essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Max	16V
Current - Hold (Ih) (Max)	1.6 A
Current - Trip (It)	3.2 A
Current - Max	40 A
Time to Trip	9 s
Resistance - Initial (Ri) (Min)	30 mOhms
Resistance - Post Trip (R1) (Max)	110 mOhms
Operating Temperature Range	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.350" L x 0.118" W (8.90mm x 3.00mm)
Lead Spacing	0.201" (5.10mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 16R160BPR is determined by strict equivalence across the following critical parameters:

Voltage rating: 16V maximum
Hold current (Ih): 1.6A maximum
Trip current (It): 3.2A
Time to trip: 9 seconds
Initial resistance (Ri): 30 mOhms minimum
Post-trip resistance (R1): 110 mOhms maximum
Operating temperature range: -40°C to 85°C
Mounting configuration: Through-hole radial disc
Physical dimensions: 0.350" L x 0.118" W
RoHS3 compliance

The RUSBF160-2 meets all these electrical and mechanical parameters, establishing it as a direct functional equivalent despite differences in packaging format and lead spacing tolerance.

Parameter Comparison

Parameter	16R160BPR	RUSBF160-2	Match Status
Manufacturer	Littelfuse Inc.	Littelfuse	Same
Voltage - Max	16V	16V	Equivalent
Current - Hold (Ih) (Max)	1.6 A	1.6 A	Equivalent
Current - Trip (It)	3.2 A	3.2 A	Equivalent
Current - Max	40 A	40 A	Equivalent
Time to Trip	9 s	9 s	Equivalent
Resistance - Initial (Ri) (Min)	30 mOhms	30 mOhms	Equivalent
Resistance - Post Trip (R1) (Max)	110 mOhms	110 mOhms	Equivalent
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	Radial, Disc	Radial, Disc	Equivalent
Size / Dimension	0.350" L x 0.118" W (8.90mm x 3.00mm)	0.350" L x 0.118" W (8.90mm x 3.00mm)	Equivalent
Lead Spacing	0.201" (5.10mm)	0.199" (5.05mm)	Within tolerance
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Obsolete	Active	Substitute is active

Engineering Selection Recommendations

The RUSBF160-2 is the manufacturer-recommended substitute for the obsolete 16R160BPR. Both components are manufactured by Littelfuse and share identical electrical characteristics across all critical parameters. The RUSBF160-2 carries active product status, ensuring continued availability and support.

Compliance certifications differ between the two parts: the 16R160BPR holds cURus and TUV approvals, while the RUSBF160-2 holds CSA, TUV, and UL approvals. The RUSBF160-2 additionally carries REACH Unaffected status. Both parts maintain ROHS3 compliance.

Lead spacing tolerance variation (0.201" versus 0.199") is within acceptable mechanical tolerance for through-hole radial disc mounting and does not affect functional compatibility or PCB layout requirements.

Frequently Asked Questions (FAQ)

Q: Can RUSBF160-2 be used as a direct replacement for 16R160BPR in existing designs?

A: Yes. The RUSBF160-2 meets all electrical specifications and physical mounting requirements of the 16R160BPR. Lead spacing tolerance variation of 0.002" is within acceptable limits for through-hole radial mounting.

Q: What is the primary reason for substitution?

A: The 16R160BPR is classified as obsolete. The RUSBF160-2 is the active equivalent from the same manufacturer with identical electrical performance.

Q: Are there packaging differences between these parts?

A: The 16R160BPR is supplied in standard packaging, while the RUSBF160-2 is supplied in Tape & Reel (TR) format. This affects procurement and handling but does not impact electrical or mechanical function.

Q: Do certification differences affect compatibility?

A: No. Both parts are RoHS3 compliant. The RUSBF160-2 carries additional certifications (CSA, UL) and REACH status, which may be beneficial for certain regulatory requirements but do not restrict its use in applications originally designed for the 16R160BPR.

Q: Are the thermal and electrical operating ranges identical?

A: Yes. Both parts operate across -40°C to 85°C and share identical voltage, current, resistance, and trip time specifications.

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