Equivalent & Substitute Parts for TR/PCB-2-1/2

Part Overview

The TR/PCB-2-1/2 is a 2.5 A board mount fuse rated for 250 V AC and 450 V DC operation, manufactured by Eaton - Electronics Division under the PC-Tron® series. This through-hole radial fuse features fast-blow response characteristics and is designed for printed circuit board integration in applications requiring reliable overcurrent protection.

The TR/PCB-2-1/2 carries an obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for legacy systems utilizing this component.

Substiute Parts

TR/PCB-2-1/2

Eaton - Electronics DivisionIn Stock: 1088TR/PCB-2-1/2 Datasheet

Current PartRFQ

TR/PCB-2-1/2-R

Eaton - Electronics DivisionIn Stock: 2242TR/PCB-2-1/2-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TR/PCB-2-1/2 is determined by strict equivalence across all electrical and mechanical parameters. The following criteria establish valid substitution:

Electrical Parameters (Must Match Exactly):

• Current Rating: 2.5 A
• Voltage Rating - AC: 250 V
• Voltage Rating - DC: 450 V
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 50 A AC, 5.9 kA DC
• Melting I²t: 0.3

Mechanical Parameters (Must Match Exactly):

• Mounting Type: Through Hole
• Fuse Type: Board Mount (Cartridge Style Excluded)
• Package / Case: Radial, Box
• Size / Dimension: 0.350" L x 0.184" W x 0.345" H (8.89 mm x 4.67 mm x 8.76 mm)

Certification (Must Match Exactly):

• Approval Agency: CSA, UL

The TR/PCB-2-1/2-R satisfies all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The TR/PCB-2-1/2-R is the direct equivalent substitute for the obsolete TR/PCB-2-1/2. Both parts are manufactured by Eaton - Electronics Division and share identical electrical specifications, mechanical dimensions, and certification approvals (CSA, UL).

The primary distinction between the main part and its substitute is product status and regulatory compliance. The TR/PCB-2-1/2-R maintains active product status, ensuring continued availability and supply chain support. Additionally, the TR/PCB-2-1/2-R achieves ROHS3 compliance, whereas the original TR/PCB-2-1/2 is RoHS non-compliant. This compliance improvement aligns with current environmental and regulatory standards without altering functional performance.

Packaging differs between the two parts: the main part is supplied in box packaging, while the substitute is available in cut tape (CT) format. This packaging variation does not affect electrical or mechanical compatibility and accommodates different assembly and procurement workflows.

Frequently Asked Questions (FAQ)

Q: Can the TR/PCB-2-1/2-R be used as a direct replacement for the TR/PCB-2-1/2?

A: Yes. The TR/PCB-2-1/2-R is a direct equivalent substitute. All electrical parameters (current rating, voltage ratings, response time, breaking capacity, and melting I²t), mechanical parameters (mounting type, fuse type, package case, and physical dimensions), and certifications (CSA, UL) are identical between the two parts.

Q: What is the difference between the two parts?

A: The TR/PCB-2-1/2-R differs from the TR/PCB-2-1/2 in three non-functional aspects: product status (active versus obsolete), RoHS compliance (ROHS3 compliant versus non-compliant), and packaging format (cut tape versus box). These differences do not affect electrical performance or mechanical compatibility.

Q: Does the packaging difference affect compatibility?

A: No. The packaging difference (cut tape versus box) is a supply and handling consideration only. Both packaging formats contain the same component with identical electrical and mechanical specifications. The choice between packaging formats depends on assembly requirements and procurement preferences.

Q: Are both parts certified by the same agencies?

A: Yes. Both the TR/PCB-2-1/2 and TR/PCB-2-1/2-R carry identical approval certifications from CSA and UL, confirming compliance with the same safety and performance standards.

Q: Why should I select the TR/PCB-2-1/2-R over the original part?

A: The TR/PCB-2-1/2 is obsolete, making the TR/PCB-2-1/2-R the appropriate choice for new designs, production continuity, and future availability. The substitute part maintains active product status and offers improved RoHS3 compliance while preserving all functional characteristics of the original component.