B2000T Equivalent & Substitute Parts

Part Overview

The B2000T is a 2A 600VAC board mount surface mount fuse manufactured by Bourns Inc. under the Telefuse™ series. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The B2000T serves telecom applications requiring reliable overcurrent protection in compact surface mount configurations.

Substiute Parts

B2000T

Bourns Inc.In Stock: 1520B2000T Datasheet

Current PartRFQ

0461002.ER

Littelfuse Inc.In Stock: 201820461002.ER Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 0461002.ER from Littelfuse Inc. qualifies as a direct substitute based on the following critical parameters:

• Current Rating: Both parts rated at 2A
• Voltage Rating - AC: Both rated at 600 VAC
• Mounting Type: Both are surface mount
• Fuse Type: Both are board mount
• Package / Case: Both use 2-SMD, Square End Block configuration
• Operating Temperature Range: Both operate -55°C ~ 125°C
• RoHS Status: Both ROHS3 Compliant
• Approval Agency: Substitute includes UR certification (matching main part requirement)

The 0461002.ER provides additional DC voltage rating (80 VDC) and enhanced breaking capacity specifications not present in the B2000T, representing a functionally compatible alternative with extended capability.

Parameter Comparison

Engineering Selection Recommendations

The 0461002.ER is the qualified substitute for the obsolete B2000T. Selection is based on:

• Active product status ensures ongoing availability and manufacturing support
• Identical current and AC voltage ratings guarantee functional equivalence in 600VAC 2A applications
• Matching package configuration (2-SMD, Square End Block) and operating temperature range enable direct board-level replacement
• UR approval certification satisfies the regulatory requirement of the original part
• ROHS3 compliance maintains environmental and regulatory alignment
• Slightly larger physical dimensions (0.398" vs 0.380" length) require PCB layout verification for space-constrained applications

Frequently Asked Questions (FAQ)

Q: Can the 0461002.ER replace the B2000T in existing designs? A: Yes. Both parts share identical current rating (2A), AC voltage rating (600VAC), mounting type (surface mount), package configuration (2-SMD, Square End Block), and operating temperature range (-55°C ~ 125°C). Physical dimensions differ slightly; verify PCB layout clearance.

Q: What is the significance of the DC voltage rating on the 0461002.ER? A: The 0461002.ER includes an 80 VDC rating not specified for the B2000T. This represents extended capability and does not restrict its use in AC-only applications.

Q: Are both parts RoHS compliant? A: Yes. Both the B2000T and 0461002.ER are ROHS3 Compliant, meeting environmental and regulatory requirements.

Q: Does the 0461002.ER have the required certifications? A: Yes. The 0461002.ER carries UR certification, matching the B2000T requirement. It additionally holds CSA certification.

Q: What packaging is available for the 0461002.ER? A: The 0461002.ER is supplied in Tape & Reel (TR) format, suitable for automated assembly processes.

Q: Are there dimensional compatibility concerns? A: The 0461002.ER is marginally larger (0.398" L x 0.123" W x 0.123" H vs 0.380" L x 0.120" W x 0.120" H). Verify PCB footprint and surrounding component clearance before implementation.