TX1089 Pulse Transformer Equivalent & Substitute Parts

Part Overview

The TX1089 is a Pulse Electronics pulse transformer designed for transmitter and receiver applications with a 1CT:1:26CT turns ratio configuration. This component features surface mount packaging and operates across the -40°C to 85°C temperature range. The TX1089 is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity. Substitute parts must maintain compatible mechanical dimensions, electrical characteristics, and mounting specifications to ensure direct replacement capability.

Substiute Parts

TX1089

Pulse ElectronicsIn Stock: 1218TX1089 Datasheet

Current PartRFQ

TX1089NL

Pulse ElectronicsIn Stock: 2068TX1089NL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute identification for the TX1089 is based on the following critical parameters that determine functional and mechanical compatibility:

Primary Substitution Criteria:

• Manufacturer: Pulse Electronics (same manufacturer ensures design compatibility)
• Mounting Type: Surface Mount (maintains PCB assembly compatibility)
• Physical Dimensions: 0.505" L x 0.280" W x 0.245" H maximum (ensures footprint compatibility)
• Operating Temperature Range: -40°C ~ 85°C (maintains thermal performance envelope)
• Moisture Sensitivity Level: MSL 3 (168 Hours) (ensures handling and storage compatibility)

The TX1089NL qualifies as a direct substitute based on identical physical dimensions, matching operating temperature range, equivalent MSL rating, and identical mounting type. Both components are manufactured by Pulse Electronics and share the same footprint specifications, enabling direct PCB replacement without layout modifications.

Parameter Comparison

Engineering Selection Recommendations

The TX1089NL is identified as the direct substitute for the TX1089 based on mechanical and thermal compatibility. The TX1089NL offers the following advantages:

Product Status: The TX1089NL maintains active product status with Pulse Electronics, ensuring continued availability and supply chain support compared to the obsolete TX1089.

Compliance Improvement: The TX1089NL achieves ROHS3 compliance, providing enhanced environmental and regulatory alignment for new designs and production runs. The TX1089 is RoHS non-compliant, which may present restrictions in certain markets and applications.

Physical Compatibility: Both components share identical footprint dimensions (0.505" L x 0.280" W) and maximum seated height (0.245"), enabling direct PCB replacement without layout modifications or re-qualification.

Thermal Performance: Matching operating temperature ranges (-40°C ~ 85°C) ensure equivalent thermal performance in target applications.

Handling Requirements: Both components maintain MSL 3 (168 Hours) moisture sensitivity levels, requiring identical storage and handling protocols.

Frequently Asked Questions (FAQ)

Q: Can the TX1089NL directly replace the TX1089 on existing PCBs?

A: Yes. The TX1089NL shares identical physical dimensions (0.505" L x 0.280" W x 0.245" H maximum) and mounting type (surface mount), enabling direct PCB replacement without layout modifications.

Q: What are the key differences between TX1089 and TX1089NL?

A: The primary differences are product status (TX1089 is obsolete; TX1089NL is active) and RoHS compliance (TX1089 is non-compliant; TX1089NL is ROHS3 compliant). Both components maintain identical physical dimensions, operating temperature ranges, and moisture sensitivity levels.

Q: Are the electrical characteristics identical between these components?

A: The turns ratio configurations differ between the two parts. The TX1089 features 1CT:1:26CT transmitter and receiver configuration, while the TX1089NL features 1CT:1CT configuration for both transmitter and receiver. Electrical performance must be evaluated against specific application requirements.

Q: What is the moisture sensitivity level, and why does it matter?

A: Both components carry MSL 3 (168 Hours) rating, indicating they require controlled storage conditions and have a 168-hour floor life after moisture exposure. This specification determines handling, storage, and assembly protocols to prevent component degradation.

Q: Is the TX1089NL suitable for new designs?

A: The TX1089NL is classified as active product status with ROHS3 compliance, making it suitable for new designs requiring current component availability and environmental regulatory alignment.