Equivalent & Substitute Parts: MA2C19500E

Part Overview

The MA2C19500E is a general-purpose rectifier diode manufactured by Panasonic Electronic Components, rated for 35 V DC reverse voltage and 100 mA average rectified current in a DO-34 axial through-hole package. This part is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement continuity. The diode operates as a small-signal rectifier with a maximum forward voltage of 1.2 V at 100 mA and a reverse recovery time of 200 µs.

Substiute Parts

MA2C19500E

Panasonic Electronic ComponentsIn Stock: 1152MA2C19500E Datasheet

Current PartRFQ

1N4454TR

onsemiIn Stock: 164091N4454TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MA2C19500E is determined by electrical and mechanical compatibility within the small-signal rectifier diode category. The primary substitution criteria are:

Electrical Parameters:

• Voltage - DC Reverse (Vr) rating must equal or exceed 35 V
• Current - Average Rectified (Io) rating must equal or exceed 100 mA
• Forward voltage characteristics must be compatible with circuit operation
• Reverse recovery time and leakage current must not degrade circuit performance

Mechanical Parameters:

• Mounting type must be Through Hole
• Package must be axial configuration (DO-34 or equivalent DO-35)
• Physical dimensions must permit direct board-level substitution

The 1N4454TR substitute part meets these criteria with a 50 V reverse voltage rating, 200 mA current rating, and compatible DO-35 axial package. The substitute provides enhanced electrical performance margins while maintaining mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 1N4454TR is a suitable substitute for the obsolete MA2C19500E based on the following engineering criteria:

Electrical Compatibility: The 1N4454TR provides superior voltage and current ratings (50 V, 200 mA) compared to the MA2C19500E requirements (35 V, 100 mA), ensuring adequate performance margins in the application circuit. The reverse recovery time of 4 ns is significantly faster than the original 200 µs specification, which may improve switching performance in high-frequency applications.

Mechanical Compatibility: Both parts utilize through-hole axial mounting in compatible packages (DO-34 and DO-35 respectively). These packages are mechanically interchangeable on standard printed circuit boards without requiring layout modifications.

Product Status and Availability: The 1N4454TR is an active product with 16,300 units in stock, providing reliable long-term procurement availability. The MA2C19500E is obsolete with limited remaining inventory (1,097 units), making transition to the substitute necessary for sustained production.

Compliance and Certifications: The 1N4454TR is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements. Both parts share the same ECCN (EAR99) and HTSUS classification (8541.10.0070).

Temperature Consideration: The MA2C19500E has a maximum junction temperature of 200°C, while the 1N4454TR is rated to 175°C. Applications operating near the upper thermal limit of the original part require thermal analysis to confirm the substitute remains within acceptable operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the 1N4454TR directly replace the MA2C19500E without circuit modifications?

A: The 1N4454TR is electrically and mechanically compatible for direct substitution in most applications. The substitute provides higher voltage and current ratings, which are backward-compatible with circuits designed for the MA2C19500E. However, applications operating at the maximum junction temperature limit (200°C) of the original part should be evaluated, as the substitute is rated to 175°C maximum.

Q: What are the key differences between these two diodes?

A: The primary differences are: (1) Voltage rating: 1N4454TR is 50 V versus MA2C19500E at 35 V; (2) Current rating: 1N4454TR is 200 mA versus MA2C19500E at 100 mA; (3) Reverse recovery time: 1N4454TR is 4 ns versus MA2C19500E at 200 µs; (4) Package: 1N4454TR uses DO-35 versus MA2C19500E uses DO-34; (5) Product status: 1N4454TR is active versus MA2C19500E is obsolete.

Q: Are the DO-34 and DO-35 packages physically interchangeable?

A: Yes, DO-34 and DO-35 are both axial through-hole packages with compatible lead spacing and diameter. Both parts can be installed in the same board-level footprint without requiring PCB redesign.

Q: Does the faster reverse recovery time of the 1N4454TR affect circuit operation?

A: The 1N4454TR reverse recovery time of 4 ns is significantly faster than the MA2C19500E at 200 µs. In most general-purpose rectification applications, this improvement is beneficial, reducing switching losses and improving efficiency. In circuits with specific timing requirements, the faster recovery may require verification to ensure no adverse effects on circuit behavior.

Q: What is the impact of higher reverse leakage current in the 1N4454TR?

A: The 1N4454TR exhibits 100 nA reverse leakage at 50 V compared to 10 nA at 30 V for the MA2C19500E. The higher leakage current in the substitute is measured at a higher voltage rating. In most applications, this difference is negligible. High-impedance circuits or precision analog applications should evaluate the impact on circuit performance.

Q: Is the 1N4454TR RoHS compliant?

A: Yes, the 1N4454TR is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.