TCFGP0J685M8R Equivalent & Substitute Parts

Part Overview

The TCFGP0J685M8R is a 6.8 µF molded tantalum capacitor manufactured by Rohm Semiconductor, rated for 6.3 V operation in a 0805 (2012 Metric) surface mount package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part features fail-safe design with built-in fuse protection and operates across the industrial temperature range of -55°C to 125°C.

Substiute Parts

TCFGP0J685M8R

Rohm SemiconductorIn Stock: 735TCFGP0J685M8R Datasheet

Current PartRFQ

TAJR685K006RNJ

KYOCERA AVXIn Stock: 710TAJR685K006RNJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TCFGP0J685M8R is determined by the following critical parameters:

• Capacitance value: 6.8 µF (exact match required)
• Voltage rating: 6.3 V (minimum requirement; higher ratings acceptable)
• Package / Case: 0805 (2012 Metric) (physical compatibility mandatory)
• Mounting type: Surface Mount (assembly process compatibility)
• Operating temperature range: -55°C ~ 125°C (minimum requirement)
• RoHS3 compliance and MSL 1 rating (regulatory and handling compatibility)

The TAJR685K006RNJ from KYOCERA AVX meets all substitution criteria. While it features improved tolerance (±10% versus ±20%) and specified ESR of 7 Ohm, these represent performance enhancements rather than deviations from the original specification.

Parameter Comparison

Engineering Selection Recommendations

The TAJR685K006RNJ is a direct functional substitute for the TCFGP0J685M8R. Both components satisfy identical electrical specifications (6.8 µF, 6.3 V, 0805 package) and environmental compliance requirements (ROHS3, MSL 1). The substitute part carries active product status, ensuring long-term availability and supply chain stability compared to the obsolete original part.

Physical dimensions show minor variation within acceptable tolerances for 0805 package class components. Maximum seated height remains identical at 0.047" (1.20mm), confirming PCB assembly compatibility. The improved tolerance specification (±10%) of the substitute represents a performance enhancement without introducing incompatibility.

Frequently Asked Questions (FAQ)

Q: Can TAJR685K006RNJ be used as a direct replacement for TCFGP0J685M8R in existing designs?

A: Yes. Both parts share identical capacitance (6.8 µF), voltage rating (6.3 V), package (0805), and operating temperature range (-55°C ~ 125°C). Physical dimensions and maximum height are compatible with standard 0805 PCB layouts.

Q: What is the significance of the tolerance difference (±20% vs ±10%)?

A: The substitute part features tighter tolerance, which represents improved performance. Designs specified for ±20% tolerance will operate within specification with the ±10% substitute part.

Q: Are there any assembly or handling differences between these parts?

A: Both parts are surface mount components with identical MSL 1 (Unlimited) moisture sensitivity ratings. Standard SMT assembly and storage procedures apply to both.

Q: Why is the original part listed as obsolete?

A: Product obsolescence reflects manufacturer discontinuation. The TAJR685K006RNJ, maintained in active production status, provides equivalent functionality with continued availability.

Q: Do dimensional variations affect PCB layout compatibility?

A: Dimensional variations (0.079" vs 0.081" length; 0.049" vs 0.051" width) fall within standard 0805 package tolerances. Maximum seated height is identical (0.047"), ensuring compatibility with existing PCB designs and assembly processes.