M39003/01-5213 Equivalent & Substitute Parts

Part Overview

The M39003/01-5213 is a 39 µF hermetically sealed tantalum capacitor rated at 10 V, manufactured by Vishay Sprague to military specification MIL-PRF-39003/1. This component is designed for high-reliability applications requiring axial through-hole mounting. The part is currently active in production with 1001 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this military-grade capacitor category.

Substiute Parts

M39003/01-5213

Vishay SpragueIn Stock: 1064M39003/01-5213 Datasheet

Current PartRFQ

M39003/01-2259

KEMETIn Stock: 1279M39003/01-2259 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the M39003/01-5213 is determined by the following critical parameters:

• Capacitance Value: Must be 39 µF
• Voltage Rating: Must be 10 V or higher
• Type: Must be hermetically sealed tantalum capacitor
• Mounting: Must be through-hole axial configuration
• Military Specification Compliance: Must conform to MIL-PRF-39003/1
• Operating Temperature Range: Must support -55°C to 125°C
• Manufacturer Size Code: Must be Size B to ensure mechanical compatibility

The M39003/01-2259 manufactured by KEMET meets these substitution criteria. While tolerance differs (±10% versus ±5%), the capacitance value, voltage rating, hermetic sealing, axial package, military specification, temperature range, and physical size code remain equivalent. The ESR specification of 2.1 Ohm for the KEMET part provides additional performance data not available for the primary part.

Parameter Comparison

Engineering Selection Recommendations

Both the M39003/01-5213 and M39003/01-2259 are active military-grade components compliant with MIL-PRF-39003/1 specification. Selection between these parts should be based on the following factors:

M39003/01-5213 (Vishay Sprague) is appropriate when tighter capacitance tolerance (±5%) is required for circuit performance. This part offers a more compact axial length of 12.04 mm.

M39003/01-2259 (KEMET) is appropriate when ESR specification is a design requirement, as this parameter is explicitly defined at 2.1 Ohm. The slightly longer axial length of 15.49 mm must be accommodated in board layout. The ±10% tolerance is acceptable for applications where capacitance variation within this range does not degrade circuit function.

Both parts share identical voltage rating, operating temperature range, hermetic sealing, and military specification compliance. Neither part is RoHS compliant; both are REACH affected. Component availability should be verified at time of procurement, as inventory levels may vary.

Frequently Asked Questions (FAQ)

Q: Can M39003/01-2259 be used as a direct replacement for M39003/01-5213?

A: Yes, within the constraints of tolerance and physical dimensions. The capacitance value, voltage rating, hermetic sealing, axial package, military specification, and operating temperature range are identical. The tolerance difference (±10% versus ±5%) and axial length difference (15.49 mm versus 12.04 mm) must be evaluated against circuit requirements and board layout constraints.

Q: What is the significance of the tolerance difference between these parts?

A: The M39003/01-5213 specifies ±5% tolerance, meaning capacitance will be between 37.05 µF and 40.95 µF. The M39003/01-2259 specifies ±10% tolerance, meaning capacitance will be between 35.1 µF and 42.9 µF. Applications sensitive to capacitance variation should use the tighter tolerance part.

Q: Are there physical space considerations when substituting these parts?

A: Yes. The M39003/01-5213 measures 0.474" (12.04 mm) in axial length, while the M39003/01-2259 measures 0.610" (15.49 mm). Board layout must accommodate the longer dimension of the KEMET part. Both parts share identical 0.185" (4.70mm) diameter.

Q: What does ESR mean, and why is it specified for one part but not the other?

A: ESR (Equivalent Series Resistance) represents the internal resistance of the capacitor at operating frequency. The M39003/01-2259 specifies 2.1 Ohm ESR. This parameter affects ripple current handling and heat dissipation. If ESR is critical to circuit design, the KEMET part with specified ESR should be selected.

Q: Are both parts compliant with current environmental regulations?

A: Both parts are RoHS non-compliant and REACH affected. Applications subject to RoHS or REACH restrictions cannot use either of these military-specification tantalum capacitors. Compliance status must be verified against applicable regulations for the end application.

Q: What is the failure rate difference between these parts?

A: The M39003/01-5213 specifies failure rate P (0.1%), while the M39003/01-2259 specifies failure rate M (1%). Lower failure rate indicates higher reliability. Applications requiring maximum reliability should prioritize the Vishay Sprague part.