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T496C685K020AS Equivalent & Substitute Parts
Part Overview
The T496C685K020AS is a 6.8 µF molded tantalum capacitor rated for 20 V operation in a 2312 (6032 Metric) surface mount package. This component is classified as obsolete, indicating it has been discontinued by the manufacturer. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this capacitor specification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 6.8 µF |
| Tolerance | ±10% |
| Voltage - Rated | 20 V |
| Type | Molded |
| Mounting Type | Surface Mount |
| Package / Case | 2312 (6032 Metric) |
| Size / Dimension | 0.236" L x 0.126" W (6.00mm x 3.20mm) |
| Height - Seated (Max) | 0.110" (2.80mm) |
| Operating Temperature | -55°C ~ 125°C |
| Features | Fail Safe with Built-in Fuse |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the T496C685K020AS is determined by strict equivalence across the following critical parameters:
Electrical Parameters:
- Capacitance: 6.8 µF (exact match required)
- Tolerance: ±10% (exact match required)
- Voltage Rating: 20 V (exact match required)
Mechanical Parameters:
- Package / Case: 2312 (6032 Metric) (exact match required)
- Mounting Type: Surface Mount (exact match required)
- Physical Dimensions: 0.236" L x 0.126" W, 0.110" Max Height (exact match required)
Environmental Parameters:
- Operating Temperature Range: -55°C ~ 125°C (exact match required)
- Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
Functional Parameters:
- Type: Molded Tantalum (exact match required)
- Features: Fail Safe with Built-in Fuse (exact match required)
The T496C685K020AT meets all substitution criteria and is classified as an active product with enhanced specifications including documented ESR and lifetime ratings.
Parameter Comparison
| Parameter | T496C685K020AS (Main Part) | T496C685K020AT (Substitute) |
|---|---|---|
| Manufacturer | KEMET | KEMET |
| Series | T496 | T496 |
| Capacitance | 6.8 µF | 6.8 µF |
| Tolerance | ±10% | ±10% |
| Voltage - Rated | 20 V | 20 V |
| Type | Molded | Molded |
| ESR (Equivalent Series Resistance) | Not specified | 2 Ohm |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Lifetime @ Temp. | Not specified | 2000 Hrs @ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 2312 (6032 Metric) | 2312 (6032 Metric) |
| Size / Dimension | 0.236" L x 0.126" W (6.00mm x 3.20mm) | 0.236" L x 0.126" W (6.00mm x 3.20mm) |
| Height - Seated (Max) | 0.110" (2.80mm) | 0.110" (2.80mm) |
| Manufacturer Size Code | C | C |
| Features | Fail Safe with Built-in Fuse | Fail Safe with Built-in Fuse |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8532.21.0050 | 8532.21.0050 |
Engineering Selection Recommendations
The T496C685K020AT is the direct substitute for the obsolete T496C685K020AS. Both components share identical electrical, mechanical, and environmental specifications, ensuring functional equivalence in circuit applications.
Product Status Consideration: The T496C685K020AS is obsolete and no longer manufactured. The T496C685K020AT is an active product with current manufacturing support and documented availability.
Compliance Advantage: The T496C685K020AT achieves ROHS3 compliance, whereas the T496C685K020AS is RoHS non-compliant. This distinction is significant for applications subject to regulatory requirements or customer specifications mandating RoHS compliance.
Performance Documentation: The T496C685K020AT provides specified ESR (2 Ohm) and lifetime rating (2000 Hrs @ 85°C), whereas the T496C685K020AS does not include these parameters in its documentation. This additional specification data supports design validation and reliability analysis.
Packaging Availability: The T496C685K020AT is available in Tape & Reel (TR) packaging, supporting automated assembly processes. Packaging format should be confirmed against production requirements.
Frequently Asked Questions (FAQ)
Q: Are the T496C685K020AS and T496C685K020AT electrically identical?
A: Yes. Both components have identical capacitance (6.8 µF), tolerance (±10%), and voltage rating (20 V). They operate across the same temperature range (-55°C ~ 125°C) and share the same fail-safe fuse feature.
Q: Can the T496C685K020AT be used as a direct replacement in existing designs?
A: Yes. The T496C685K020AT is mechanically and electrically equivalent to the T496C685K020AS. Both use the 2312 (6032 Metric) package with identical physical dimensions and surface mount configuration.
Q: What is the difference between the two part numbers?
A: The primary differences are product status and compliance. The T496C685K020AS is obsolete and RoHS non-compliant. The T496C685K020AT is an active product with ROHS3 compliance and documented ESR and lifetime specifications.
Q: Does the packaging format affect compatibility?
A: Packaging format (bulk versus Tape & Reel) does not affect electrical or mechanical compatibility. The T496C685K020AT is supplied in Tape & Reel format, which is standard for automated assembly. Confirm packaging requirements with your procurement or manufacturing process.
Q: Are there any thermal or reliability differences?
A: Both components operate across -55°C ~ 125°C. The T496C685K020AT provides a specified lifetime rating of 2000 Hrs @ 85°C. The T496C685K020AS does not include lifetime specification data.
Q: Is the T496C685K020AT the only substitute available?
A: Based on the provided substitute list, the T496C685K020AT is the identified equivalent part for the T496C685K020AS.
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