SM91602L-E Equivalent & Substitute Parts

Part Overview

The SM91602L-E is a LAN Gigabit 1-channel surface mount pulse transformer manufactured by Bourns Inc. This component is designed for 1000 Base-T Ethernet applications with a 1:1 turns ratio and 350µH inductance specification. The part is classified as Obsolete, necessitating identification of active equivalent components for ongoing design requirements and production continuity. Substitute parts must maintain functional compatibility within LAN transformer applications while meeting the same mechanical and electrical constraints.

Substiute Parts

SM91602L-E

Bourns Inc.In Stock: 731SM91602L-E Datasheet

Current PartRFQ

SM91604L-E

Bourns Inc.In Stock: 889SM91604L-E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SM91602L-E is determined by the following critical parameters:

Mechanical Compatibility:

• Identical footprint dimensions (33.00mm x 19.60mm)
• Identical maximum seated height (10.50mm)
• Surface mount packaging format (Tape & Reel)

Electrical Compatibility:

• LAN transformer application category
• 1:1 turns ratio configuration
• Surface mount technology suitable for PCB integration

Compliance & Certification:

• RoHS3 compliance requirement
• MSL 1 rating (unlimited moisture sensitivity)
• REACH Unaffected status

The SM91604L-E is identified as a manufacturer-recommended substitute based on matching mechanical dimensions, packaging format, turns ratio, mounting type, and compliance certifications. Both components are manufactured by Bourns Inc. within the SM series.

Parameter Comparison

Engineering Selection Recommendations

SM91604L-E Selection Basis:

The SM91604L-E is the manufacturer-recommended substitute for the obsolete SM91602L-E. Selection is supported by the following factors:

1. Product Status: The SM91604L-E maintains Active product status, ensuring ongoing availability and manufacturing support from Bourns Inc., whereas the SM91602L-E is Obsolete.

2. Mechanical Compatibility: Both components share identical footprint dimensions (33.00mm x 19.60mm) and maximum seated height (10.50mm), enabling direct PCB layout compatibility without redesign.

3. Compliance Alignment: Both parts maintain ROHS3 compliance, MSL 1 rating, and REACH Unaffected status, satisfying regulatory and environmental requirements.

4. Packaging Consistency: Both components are supplied in Tape & Reel format, maintaining supply chain and assembly process compatibility.

5. Electrical Configuration: Both transformers feature 1:1 turns ratio and surface mount technology appropriate for LAN applications.

6. Operating Temperature: The SM91604L-E provides an extended operating temperature range (-40°C ~ 105°C) compared to the SM91602L-E (0°C ~ 85°C), offering broader thermal performance capability.

Frequently Asked Questions (FAQ)

Q: Can the SM91604L-E be used as a direct replacement for the SM91602L-E?

A: The SM91604L-E is the manufacturer-recommended substitute. Both components share identical mechanical dimensions, packaging format, turns ratio, and compliance certifications. The substitute is suitable for direct PCB layout compatibility.

Q: What is the primary difference between these two transformers?

A: The inductance specification differs significantly: SM91602L-E is rated at 350µH, while SM91604L-E is rated at 0.035µH. The SM91604L-E also provides an extended operating temperature range (-40°C ~ 105°C versus 0°C ~ 85°C).

Q: Why is the SM91602L-E classified as Obsolete?

A: The SM91602L-E is no longer in active production. The SM91604L-E is the active equivalent maintained by Bourns Inc. for ongoing design and production requirements.

Q: Are both parts available in the same packaging format?

A: Yes. Both the SM91602L-E and SM91604L-E are supplied in Tape & Reel (TR) packaging, maintaining consistency with standard surface mount assembly processes.

Q: Do both transformers meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant, carry MSL 1 rating (Unlimited), and maintain REACH Unaffected status.

Q: What is the inventory status of these parts?

A: The SM91602L-E has 688 pieces in stock (Obsolete status). The SM91604L-E has 865 pieces in stock (Active status).

Q: Are the physical dimensions identical?

A: Yes. Both transformers have identical dimensions: 1.299" L x 0.772" W (33.00mm x 19.60mm) with a maximum seated height of 0.413" (10.50mm).