Equivalent & Substitute Parts for TE Connectivity 1-1879056-7

Part Overview

The TE Connectivity 1-1879056-7 is a 1.5 µF molded tantalum capacitor rated for 35 V operation in a 1411 (3528 Metric) surface mount package. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. The part operates across an industrial temperature range of -55°C to 125°C and features a general-purpose design suitable for standard electronic applications.

Substiute Parts

1-1879056-7

TE Connectivity Passive ProductIn Stock: 10441-1879056-7 Datasheet

Current PartRFQ

T491B155K035AT

KEMETIn Stock: 3654T491B155K035AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 1-1879056-7 is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 1.5 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Rated Voltage: 35 V (exact match required)
• Package / Case: 1411 (3528 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Type: Molded Tantalum (exact match required)

The KEMET T491B155K035AT meets all substitution criteria and is classified as an active product, providing long-term availability and design support advantages over the obsolete TE Connectivity part.

Parameter Comparison

Engineering Selection Recommendations

The KEMET T491B155K035AT is the direct equivalent substitute for the TE Connectivity 1-1879056-7. Selection of the KEMET part is supported by the following factors:

• Product Status: The KEMET T491B155K035AT is classified as active, ensuring continued availability and manufacturing support, whereas the TE Connectivity part is obsolete.
• Regulatory Compliance: Both parts maintain REACH Unaffected status and EAR99 ECCN classification, confirming equivalent compliance posture.
• RoHS Compliance: The KEMET T491B155K035AT is ROHS3 compliant, meeting current environmental standards.
• Electrical Equivalence: All critical electrical parameters—capacitance, tolerance, voltage rating, and operating temperature range—are identical between the two parts.
• Physical Compatibility: Identical package dimensions, height, and mounting type ensure direct board-level compatibility without layout modifications.
• ESR Performance: The KEMET part exhibits a marginally lower ESR value (5.0 Ohm versus 5.2 Ohm), representing equivalent or improved performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the KEMET T491B155K035AT be used as a direct replacement for the TE Connectivity 1-1879056-7 on existing PCBs?

A: Yes. Both parts share identical package dimensions (1411 / 3528 Metric), mounting type (surface mount), and electrical specifications. No PCB layout modifications are required.

Q: What is the significance of the ESR difference between the two parts?

A: The KEMET T491B155K035AT exhibits an ESR of 5.0 Ohm compared to the TE Connectivity part's 5.2 Ohm. This represents a minor variation within acceptable tolerances for general-purpose tantalum capacitor applications and does not preclude substitution.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts maintain identical REACH and ECCN classifications. The KEMET part additionally carries ROHS3 compliance certification, which aligns with current environmental regulations.

Q: Why is the TE Connectivity part listed as obsolete?

A: The TE Connectivity 1-1879056-7 is no longer in active production. The KEMET T491B155K035AT provides equivalent functionality with the advantage of active product status and ongoing manufacturer support.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are packaging options different between the two parts?

A: The TE Connectivity part is available in standard packaging, while the KEMET T491B155K035AT is supplied in Tape & Reel (TR) format. Both formats are compatible with standard assembly processes.