Equivalent & Substitute Parts for RUE160

Part Overview

The RUE160 is a polymeric PTC resettable fuse rated for 30V and 1.6A hold current, manufactured by Littelfuse Inc. in the PolySwitch® series. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement. The RUE160 functions as a thermal protection device in through-hole radial disc configuration, suitable for applications requiring automatic circuit protection with reset capability.

Key Parameters

Parameter	Value
Voltage - Max	30V
Current - Hold (Ih) (Max)	1.6 A
Current - Trip (It)	3.2 A
Time to Trip	8 s
Resistance - Initial (Ri) (Min)	30 mOhms
Resistance - Post Trip (R1) (Max)	110 mOhms
Operating Temperature	-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)
Height - Seated (Max)	0.598" (15.20mm)
Lead Spacing	0.201" (5.10mm)

Substitute Part Grouping Explanation

Substitution eligibility for the RUE160 is determined by strict equivalence across the following critical parameters:

Voltage rating: 30V maximum
Hold current (Ih): 1.6A maximum
Trip current (It): 3.2A
Time to trip: 8 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 with 0.598" seated height

Substitute parts are classified into two categories: direct manufacturer equivalents (same electrical and mechanical specifications) and parametric equivalents (matching all critical electrical parameters with minor dimensional or resistance tolerance variations). Parts from different manufacturers meeting these criteria are considered functionally interchangeable for circuit protection applications.

Parameter Comparison

Part Number	Manufacturer	Voltage (Max)	Ih (Max)	It	Ri (Min)	R1 (Max)	Size (mm)	Lead Spacing	Product Status
RUE160	Littelfuse Inc.	30V	1.6 A	3.2 A	30 mOhms	110 mOhms	8.90 x 3.00	5.10"	Obsolete
RUEF160	Littelfuse	30V	1.6 A	3.2 A	30 mOhms	110 mOhms	8.90 x 3.00	5.05"	Active
RUEF160S	Littelfuse Inc.	30V	1.6 A	3.2 A	30 mOhms	110 mOhms	8.90 x 3.00	5.05"	Active
30R160UU	Littelfuse Inc.	30V	1.6 A	3.2 A	30 mOhms	110 mOhms	8.90 x 3.00	5.10"	Active
0ZRB0160FF1E	Bel Fuse Inc.	30V	1.6 A	3.2 A	30 mOhms	110 mOhms	8.90 x 3.00	5.10"	Active
FRU160-30F	RFE/Fuzetec	30V	1.6 A	3.2 A	30 mOhms	110 mOhms	8.90 x 3.00	5.10"	Active
MF-R160	Bourns Inc.	30V	1.6 A	3.2 A	55 mOhms	150 mOhms	10.20 x 3.00	5.10"	Active
PTR030V0160-BK	Eaton - Electronics Division	30V	1.6 A	3.2 A	30 mOhms	110 mOhms	8.90 x 3.00	5.00"	Active
PTR030V0160-BK1	Eaton - Electronics Division	30V	1.6 A	3.2 A	30 mOhms	110 mOhms	8.90 x 3.00	5.00"	Active
PFRA.160	SCHURTER Inc.	30V	1.6 A	3.2 A	55 mOhms	150 mOhms	10.20 x 3.00	5.10"	Active

Engineering Selection Recommendations

For applications currently using the obsolete RUE160, the following selection criteria apply based on product status and compliance:

Primary Recommendation: RUEF160 or RUEF160S (Littelfuse) provide direct electrical equivalence with identical resistance specifications and active product status. Both parts maintain the same voltage, hold current, and trip characteristics as the original RUE160. RUEF160S offers bulk packaging availability.

Alternative from Same Manufacturer: 30R160UU (Littelfuse POLY-FUSE® series) matches all critical electrical parameters and physical dimensions with active status and ROHS3 compliance.

Cross-Manufacturer Equivalents: PTR030V0160-BK and PTR030V0160-BK1 (Eaton) provide electrical equivalence with RoHS compliance. FRU160-30F (RFE/Fuzetec) offers equivalent performance with ROHS3 compliance and cUL/TUV/UL certifications. 0ZRB0160FF1E (Bel Fuse) includes AEC-Q200 automotive qualification.

Parametric Alternatives with Dimensional Variation: MF-R160 (Bourns Multifuse®) and PFRA.160 (SCHURTER) maintain electrical equivalence but feature larger disc diameter (10.20mm vs 8.90mm) and higher resistance tolerances. These are suitable only where PCB layout accommodates the increased physical footprint.

Frequently Asked Questions (FAQ)

Q: Can RUEF160 directly replace RUE160 in existing designs? A: Yes. RUEF160 maintains identical electrical specifications (30V, 1.6A hold, 3.2A trip, 8s response time) and physical dimensions as RUE160. The primary difference is product status change from obsolete to active, with improved RoHS3 compliance.

Q: What is the difference between RUEF160 and RUEF160S? A: Both parts are electrically and mechanically identical. The difference is packaging: RUEF160 is supplied in bag format, while RUEF160S is supplied in bulk. Selection depends on procurement and assembly requirements.

Q: Are MF-R160 and PFRA.160 suitable substitutes? A: These parts match all critical electrical parameters but feature larger physical dimensions (10.20mm diameter vs 8.90mm). They are functionally equivalent for circuit protection but require PCB layout verification due to increased footprint. Resistance tolerances are also wider (55 mOhms initial, 150 mOhms post-trip vs 30/110 mOhms).

Q: What certifications should I verify for my application? A: Certification requirements depend on end-use. For automotive applications, 0ZRB0160FF1E includes AEC-Q200 qualification. For general industrial use, all listed substitutes carry cURus, TUV, or UL approvals. Verify specific regulatory requirements for your target market.

Q: Does lead spacing variation affect PCB compatibility? A: Lead spacing ranges from 5.00" to 5.10" across substitute parts. Most PCB designs accommodate this 0.10" tolerance range. However, verify your specific PCB footprint design before final part selection, particularly for high-density layouts.

Q: Are there inventory considerations for part selection? A: Yes. RUEF160 (3112 pcs), 30R160UU (3109 pcs), and MF-R160 (8400 pcs) show highest inventory availability. Availability should be confirmed with your component supplier for production scheduling.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message