MC34901SEFR2 Equivalent & Substitute Parts

Part Overview

The MC34901SEFR2 is a 1/1 CANbus transceiver IC manufactured by NXP USA Inc., housed in an 8-SOIC surface mount package. This component is classified as obsolete, indicating it has been discontinued and is no longer in active production. Due to its obsolete status, sourcing new units from primary channels is limited, making identification of functionally equivalent substitute parts essential for ongoing system support, maintenance, and new design implementations requiring CANbus interface capability.

Substiute Parts

MC34901SEFR2

NXP USA Inc.In Stock: 3327MC34901SEFR2 Datasheet

Current PartRFQ

TJA1051T/3,118

NXP USA Inc.In Stock: 43321TJA1051T/3,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MC34901SEFR2 is determined by strict alignment of the following critical parameters:

• Protocol Compatibility: Both parts must support CANbus communication protocol
• Driver/Receiver Configuration: Both parts must provide 1/1 driver/receiver configuration
• Supply Voltage Range: Both parts must operate within 4.5V ~ 5.5V supply voltage specification
• Package Compatibility: Both parts must use 8-SOIC surface mount package with identical physical dimensions (0.154", 3.90mm Width)
• Mounting Type: Both parts must be surface mount technology
• Manufacturer: NXP USA Inc. maintains consistent design standards across its CANbus transceiver product line

The TJA1051T/3,118 meets all substitution criteria as an active product offering from the same manufacturer, providing direct functional replacement capability while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The TJA1051T/3,118 is the designated manufacturer-recommended substitute for the obsolete MC34901SEFR2. Selection of this active product is supported by the following engineering factors:

• Product Status: The TJA1051T/3,118 maintains active production status, ensuring long-term availability and supply chain continuity
• Compliance Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for electronic component use
• Electrical Compatibility: Identical supply voltage range (4.5V ~ 5.5V) and CANbus protocol support ensure direct functional replacement without circuit modification
• Package Compatibility: Identical 8-SOIC package dimensions enable direct PCB footprint compatibility and drop-in replacement capability
• Thermal Performance: Extended operating temperature range (-40°C ~ 150°C) of the substitute part provides enhanced thermal margin compared to the original part (-40°C ~ 125°C)
• Moisture Handling: Improved MSL rating (1 vs. 3) reduces moisture sensitivity risk during storage and handling

Frequently Asked Questions (FAQ)

Q: Can the TJA1051T/3,118 be used as a direct replacement for MC34901SEFR2 without PCB modifications?

A: Yes. Both parts use identical 8-SOIC package dimensions and pinout configuration, enabling direct PCB footprint compatibility and drop-in replacement without circuit board redesign.

Q: What is the primary reason for substitution?

A: The MC34901SEFR2 is classified as obsolete and no longer in active production. The TJA1051T/3,118 is the manufacturer-recommended active alternative providing equivalent functionality.

Q: Are there electrical differences between these parts?

A: Both parts operate within the same 4.5V ~ 5.5V supply voltage range and support identical CANbus 1/1 transceiver configuration. The TJA1051T/3,118 provides an extended operating temperature range (-40°C ~ 150°C vs. -40°C ~ 125°C).

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for electronic component applications.

Q: What is the significance of the MSL rating difference?

A: The TJA1051T/3,118 has an MSL rating of 1 (unlimited moisture exposure), compared to the MC34901SEFR2 MSL rating of 3 (168 hours). This indicates improved moisture resistance and reduced handling constraints for the substitute part.

Q: Is the TJA1051T/3,118 available in the same packaging options?

A: The TJA1051T/3,118 is available in Cut Tape (CT) and Digi-Reel® packaging formats, with inventory of 43,295 pieces in stock, ensuring reliable supply availability.