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T322E476K025AS Equivalent & Substitute Parts
Part Overview
The T322E476K025AS is a 47 µF molded tantalum capacitor manufactured by KEMET, rated for 25 V operation with axial through-hole mounting. This component is classified as Active product status and is designed for general-purpose applications requiring reliable energy storage and filtering in electronic circuits. The part is currently available with 1093 units in stock.
Substitute parts become necessary when the primary part number reaches end-of-life status, experiences supply constraints, or when design requirements mandate compliance with specific regulatory standards such as RoHS3. The substitute part T322E476K025AT provides functional equivalence while offering enhanced compliance characteristics.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Capacitance | 47 | µF |
| Voltage - Rated | 25 | V |
| Tolerance | ±10 | % |
| Type | Molded Tantalum | — |
| ESR (Equivalent Series Resistance) | 1 | Ohm |
| Operating Temperature Range | -55 to 125 | °C |
| Mounting Type | Through Hole | — |
| Package / Case | Axial | — |
| Size / Dimension | 0.280" Dia x 0.530" L (7.11mm x 13.46mm) | — |
| Series | T322 | — |
| Features | General Purpose | — |
Substitute Part Grouping Explanation
The T322E476K025AT qualifies as a direct substitute for the T322E476K025AS based on strict electrical and mechanical parameter equivalence. Both parts share identical specifications across all critical substitution criteria:
Electrical Parameters (Identical):
- Capacitance: 47 µF
- Voltage Rating: 25 V
- Tolerance: ±10%
- ESR: 1 Ohm
- Operating Temperature Range: -55°C to 125°C
Mechanical Parameters (Identical):
- Mounting Type: Through Hole
- Package Type: Axial
- Physical Dimensions: 0.280" Dia x 0.530" L (7.11mm x 13.46mm)
- Manufacturer Size Code: E
Functional Classification (Identical):
- Type: Molded Tantalum
- Series: T322
- Features: General Purpose
- Product Status: Active
The substitution is valid because both parts maintain identical form factor, fit, and functional performance characteristics. The primary distinction between these parts is regulatory compliance status, not electrical or mechanical performance.
Parameter Comparison
| Parameter | T322E476K025AS (Main) | T322E476K025AT (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | KEMET | KEMET | Identical |
| Series | T322 | T322 | Identical |
| Capacitance | 47 µF | 47 µF | Identical |
| Tolerance | ±10% | ±10% | Identical |
| Voltage - Rated | 25 V | 25 V | Identical |
| Type | Molded | Molded | Identical |
| ESR | 1 Ohm | 1 Ohm | Identical |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | Identical |
| Mounting Type | Through Hole | Through Hole | Identical |
| Package / Case | Axial | Axial | Identical |
| Size / Dimension | 0.280" Dia x 0.530" L (7.11mm x 13.46mm) | 0.280" Dia x 0.530" L (7.11mm x 13.46mm) | Identical |
| Manufacturer Size Code | E | E | Identical |
| Features | General Purpose | General Purpose | Identical |
| Product Status | Active | Active | Identical |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | Different |
| REACH Status | REACH Unaffected | REACH Unaffected | Identical |
| ECCN | EAR99 | EAR99 | Identical |
Engineering Selection Recommendations
Primary Part (T322E476K025AS): The T322E476K025AS remains suitable for applications where RoHS compliance is not a regulatory requirement. This part is Active status with confirmed inventory availability of 1093 units. Selection of this part is appropriate for legacy systems, non-regulated markets, or applications where RoHS3 compliance is not mandated.
Substitute Part (T322E476K025AT): The T322E476K025AT is the preferred selection for new designs, regulated markets, and applications subject to RoHS3 compliance requirements. This part maintains identical electrical and mechanical specifications while providing ROHS3 Compliant certification. Current inventory availability is 781 units. This part is recommended for all applications where regulatory compliance with RoHS3 standards is required or anticipated.
Selection Criteria:
- If RoHS3 compliance is required: Select T322E476K025AT
- If RoHS compliance is not required and cost optimization is prioritized: Select T322E476K025AS
- Both parts are electrically and mechanically interchangeable with no circuit redesign required
- Both parts maintain identical form factor and PCB footprint compatibility
Frequently Asked Questions (FAQ)
Q: Are T322E476K025AS and T322E476K025AT electrically identical?
A: Yes. Both parts share identical electrical specifications: 47 µF capacitance, 25 V rating, ±10% tolerance, 1 Ohm ESR, and -55°C to 125°C operating temperature range. No circuit performance differences exist between these parts.
Q: Can T322E476K025AT be used as a direct replacement for T322E476K025AS?
A: Yes. The T322E476K025AT is a direct substitute. Both parts feature identical axial through-hole mounting, identical physical dimensions (0.280" Dia x 0.530" L), and identical PCB footprint requirements. No board layout modifications are necessary.
Q: What is the primary difference between these two part numbers?
A: The primary difference is regulatory compliance status. T322E476K025AT is ROHS3 Compliant, while T322E476K025AS is RoHS non-compliant. All electrical and mechanical parameters are identical.
Q: Which part should be selected for new product designs?
A: T322E476K025AT is the appropriate selection for new designs, particularly for applications subject to RoHS3 regulatory requirements or for markets where RoHS3 compliance is standard practice.
Q: Are there any temperature performance differences between these parts?
A: No. Both parts operate across the identical temperature range of -55°C to 125°C with identical ESR characteristics across this range.
Q: Can these parts be used interchangeably on existing PCBs?
A: Yes. Both parts are mechanically and electrically interchangeable. No PCB modifications, rework, or design changes are required for substitution.
Q: What is the inventory status for each part?
A: T322E476K025AS has 1093 units in stock. T322E476K025AT has 781 units in stock. Both parts are currently available.
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