1A3-TP Equivalent & Substitute Parts

Part Overview

The 1A3-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 1 A average rectified current in an R-1 axial through-hole package. This component is classified as obsolete, making identification of equivalent substitute parts necessary for ongoing design support, maintenance, and production continuity. The 1A3-TP remains functionally available through existing inventory stock of 1003 pieces.

Substiute Parts

1A3-TP

Micro Commercial CoIn Stock: 10151A3-TP Datasheet

Current PartRFQ

1N4003-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 189701N4003-E3/54 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1A3-TP is determined by electrical and mechanical parameter equivalence across the following criteria:

Electrical Parameters (Critical):

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
• Speed: Standard Recovery >500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 5 µA @ 200 V
• Capacitance @ Vr, F: 15pF @ 4V, 1MHz

Mechanical Parameters (Critical):

• Mounting Type: Through Hole
• Operating Temperature - Junction: -55°C ~ 150°C

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The 1N4003-E3/54 meets all specified electrical and mechanical parameters, enabling direct functional substitution despite differences in package designation (R-1 versus DO-204AL/DO-41).

Parameter Comparison

Engineering Selection Recommendations

The 1N4003-E3/54 manufactured by Vishay General Semiconductor - Diodes Division is a direct electrical and mechanical equivalent to the 1A3-TP. Both components share identical electrical specifications across all critical parameters: reverse voltage rating, forward current capacity, forward voltage drop, recovery speed, reverse leakage current, and junction capacitance.

The 1N4003-E3/54 holds active product status, ensuring ongoing availability and supply chain continuity. Both components maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity classification, satisfying regulatory and environmental requirements.

The primary distinction between these parts is package designation: the 1A3-TP uses R-1 axial packaging, while the 1N4003-E3/54 uses DO-204AL (DO-41) axial packaging. Both are through-hole axial configurations suitable for identical circuit board layouts and mounting procedures.

Frequently Asked Questions (FAQ)

Q: Can the 1N4003-E3/54 directly replace the 1A3-TP in existing designs?

A: Yes. The 1N4003-E3/54 meets all electrical and mechanical specifications of the 1A3-TP. Both components are through-hole axial diodes with identical voltage ratings, current capacity, forward voltage characteristics, and operating temperature ranges. Physical package dimensions may differ slightly between R-1 and DO-204AL designations; verify PCB hole spacing and lead length compatibility for your specific application.

Q: What is the difference between R-1 and DO-204AL packaging?

A: Both R-1 and DO-204AL are axial through-hole package styles for rectifier diodes. The designations refer to different standardization systems for the same general form factor. Electrical performance is identical; physical dimensions may vary slightly. Consult component datasheets for precise lead diameter and package length specifications.

Q: Are there compliance or regulatory differences between these parts?

A: No. Both the 1A3-TP and 1N4003-E3/54 are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity classification. Both are assigned ECCN EAR99 and HTSUS 8541.10.0080 codes.

Q: Why is the 1A3-TP listed as obsolete?

A: The 1A3-TP is classified as obsolete by the manufacturer, indicating it is no longer in active production. The 1N4003-E3/54 is an active product with current manufacturing and supply availability.

Q: What inventory considerations apply to these parts?

A: The 1A3-TP has 1003 pieces available in existing stock. The 1N4003-E3/54 has 18865 pieces in current inventory, providing significantly greater supply availability for new production and ongoing requirements.