FT600-2000-2 Equivalent & Substitute Parts

Part Overview

The FT600-2000-2 is a 2A 600VAC board mount surface mount fuse manufactured by Littelfuse Inc. as part of the FT600 and Raychem series. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and new design implementations. The fast blow response time and 60A breaking capacity at rated voltage make this fuse suitable for telecom applications requiring rapid fault protection.

Substiute Parts

FT600-2000-2

Littelfuse Inc.In Stock: 3335FT600-2000-2 Datasheet

Current PartRFQ

0461002.ER

Littelfuse Inc.In Stock: 201820461002.ER Datasheet

DirectRFQ

TR2/TCP2-R

Eaton - Electronics DivisionIn Stock: 846TR2/TCP2-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FT600-2000-2 is determined by the following critical parameters:

• Current Rating: 2A (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: 2-SMD, Square End Block (exact match required)
• Voltage Rating - AC: 600 VAC minimum (equal or higher acceptable)
• Operating Temperature Range: -55°C ~ 125°C (equal or wider range acceptable)
• Approval Agencies: CSA and/or UL certification required

Two substitute parts meet these criteria with varying degrees of parameter alignment:

0461002.ER (Littelfuse Inc., Telelink® 461 series) maintains identical current rating, mounting type, and package configuration. This part is active in production and offers dual voltage capability (600 VAC / 80 VDC) with slow blow response characteristics.

TR2/TCP2-R (Eaton - Electronics Division, TCP series) maintains identical current rating, mounting type, and package configuration. This part is active in production but operates at a reduced AC voltage rating of 250 VAC, requiring application-level voltage compatibility verification.

Parameter Comparison

Engineering Selection Recommendations

0461002.ER is the primary substitute for FT600-2000-2 applications. Both parts are manufactured by Littelfuse Inc., share identical current ratings, mounting configurations, and package dimensions within tolerance. The 0461002.ER maintains the 600 VAC rating and identical operating temperature range. The transition from fast blow to slow blow response time requires circuit-level evaluation to confirm compatibility with system protection requirements. The 0461002.ER is active in production with ROHS3 compliance and CSA/UR certification.

TR2/TCP2-R is a secondary substitute option suitable only for applications where the AC voltage requirement does not exceed 250 VAC. This part is manufactured by Eaton and maintains identical current rating and surface mount package configuration. The reduced voltage rating, increased melting I²t value (30 versus 18), and higher DC cold resistance (0.075 Ohms versus 0.05 Ohms) indicate different thermal and electrical characteristics. The TR2/TCP2-R is active in production with RoHS compliance and CSA/UR certification.

Frequently Asked Questions (FAQ)

Q: Can 0461002.ER be used as a direct replacement for FT600-2000-2?

A: 0461002.ER meets the core substitution criteria: identical 2A current rating, surface mount configuration, and 2-SMD square end block package. Both parts operate across -55°C to 125°C and maintain 600 VAC AC voltage rating. The primary difference is response time (slow blow versus fast blow). Circuit protection requirements must be evaluated to confirm compatibility.

Q: What is the voltage limitation of TR2/TCP2-R?

A: TR2/TCP2-R is rated for 250 VAC maximum, compared to the 600 VAC rating of FT600-2000-2. This part is suitable only for applications where the system AC voltage does not exceed 250 VAC.

Q: Are the physical dimensions of substitute parts compatible with the original PCB footprint?

A: All three parts use 2-SMD square end block packaging. Dimensional variations exist: FT600-2000-2 measures 10.20 x 3.10 x 3.10 mm, 0461002.ER measures 10.10 x 3.12 x 3.12 mm, and TR2/TCP2-R measures 10.29 x 2.77 x 2.77 mm. These variations are within typical PCB footprint tolerances for surface mount components, but physical board layout should be confirmed.

Q: What is the difference between fast blow and slow blow response times?

A: Fast blow fuses (FT600-2000-2) interrupt circuits rapidly upon overcurrent detection, providing immediate protection. Slow blow fuses (0461002.ER) tolerate temporary current surges before interruption, suitable for circuits with inrush currents. Application requirements determine which response characteristic is appropriate.

Q: Are all substitute parts RoHS compliant?

A: Yes. FT600-2000-2 and 0461002.ER are ROHS3 compliant. TR2/TCP2-R is RoHS compliant. All three parts meet environmental compliance standards.

Q: What certifications do the substitute parts carry?

A: 0461002.ER carries CSA and UR certification. TR2/TCP2-R carries CSA and UR certification. The original FT600-2000-2 carries CSA and UL certification. Both substitute parts meet recognized safety standards for board mount fuses.