M39003/01-3003 Equivalent & Substitute Parts

Part Overview

The M39003/01-3003 is a 2.2 µF hermetically sealed tantalum capacitor rated for 20 V, manufactured by Vishay Sprague under military specification MIL-PRF-39003/1. This component is designed for high-reliability applications requiring axial through-hole mounting. The part is currently active with 822 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, manufacturing discontinuation, or design flexibility within military and industrial specifications.

Substiute Parts

M39003/01-3003

Vishay SpragueIn Stock: 914M39003/01-3003 Datasheet

Current PartRFQ

M39003/01-6073

Vishay SpragueIn Stock: 1138M39003/01-6073 Datasheet

DirectRFQ

M39003/01-2763

KEMETIn Stock: 926M39003/01-2763 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M39003/01-3003 is determined by the following critical parameters:

• Capacitance: 2.2 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating: 20 V (exact match required)
• Type: Hermetically Sealed (exact match required)
• Operating Temperature: -55°C ~ 125°C (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package: Axial (exact match required)
• Qualification: MIL-PRF-39003/1 (exact match required)

The identified substitute parts M39003/01-6073 (Vishay Sprague) and M39003/01-2763 (KEMET) meet all critical electrical and mechanical parameters. Variations in ESR, failure rate classification, and physical length do not preclude substitution when these parameters are not design-limiting factors.

Parameter Comparison

Engineering Selection Recommendations

All three parts are qualified to MIL-PRF-39003/1 and maintain active product status. Selection between M39003/01-3003, M39003/01-6073, and M39003/01-2763 is based on the following factors:

M39003/01-3003 (Primary): Offers the lowest failure rate classification (S, 0.001%) and represents the original specification. Use when failure rate performance is a design requirement.

M39003/01-6073 (Vishay Sprague Alternative): Maintains identical physical dimensions and electrical parameters to the primary part. Suitable for direct substitution when Vishay Sprague sourcing is preferred and failure rate B (0.1%) is acceptable.

M39003/01-2763 (KEMET Alternative): Meets all electrical specifications and MIL-PRF-39003/1 qualification. Physical length is 0.422" (10.72mm) versus 0.286" (7.26mm) for the primary part. This dimensional difference requires verification of available board space. ESR is specified at 7 Ohm. Failure rate R (0.01%) is intermediate between the primary and M39003/01-6073.

All parts are RoHS non-compliant and REACH-affected, consistent with military tantalum capacitor specifications.

Frequently Asked Questions (FAQ)

Q: Can M39003/01-2763 be used in place of M39003/01-3003 if board space is limited?

A: No. The M39003/01-2763 has a physical length of 0.422" (10.72mm) compared to 0.286" (7.26mm) for M39003/01-3003. Physical clearance must be verified before substitution.

Q: What is the significance of the different failure rate classifications?

A: Failure rate classifications (S, B, R) reflect the expected defect rate per 1,000 hours of operation under specified conditions. M39003/01-3003 (S, 0.001%) has the lowest failure rate, followed by M39003/01-2763 (R, 0.01%), then M39003/01-6073 (B, 0.1%). Selection depends on application reliability requirements.

Q: Are all three parts interchangeable from an electrical standpoint?

A: Yes. All three parts share identical capacitance (2.2 µF), tolerance (±10%), voltage rating (20 V), temperature range (-55°C ~ 125°C), and hermetically sealed construction. Electrical performance is equivalent.

Q: Does the 7 Ohm ESR specification on M39003/01-2763 affect compatibility?

A: ESR affects ripple current handling and heat dissipation characteristics. If ESR is not specified as a design constraint, the 7 Ohm value does not preclude substitution. Verify ESR requirements in the circuit design before selection.

Q: Are all parts MIL-PRF-39003/1 qualified?

A: Yes. All three parts are qualified to MIL-PRF-39003/1 and CSR13 series specifications, confirming military-grade reliability and performance standards.