SMD18HE-TP Equivalent & Substitute Parts

Part Overview

The SMD18HE-TP is a Schottky diode rated for 80V DC reverse voltage and 1A average rectified current in a surface mount SOD-123HE package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is necessary for ongoing design support and production continuity.

Substiute Parts

SMD18HE-TP

Micro Commercial CoIn Stock: 897SMD18HE-TP Datasheet

Current PartRFQ

MBR180S1-7

Diodes IncorporatedIn Stock: 45331MBR180S1-7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMD18HE-TP is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): 80 V minimum
• Current - Average Rectified (Io): 1 A minimum
• Technology: Schottky diode
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Package / Case: SOD-123 or SOD-123H variant
• Operating Temperature Range: -55°C minimum to 175°C or higher

Compliance Criteria:

• RoHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The substitute part MBR180S1-7 meets all electrical and mechanical requirements within these parameters.

Parameter Comparison

Engineering Selection Recommendations

The MBR180S1-7 manufactured by Diodes Incorporated is a direct electrical and mechanical substitute for the obsolete SMD18HE-TP. Both components share identical voltage and current ratings, Schottky technology, and fast recovery speed characteristics. Both are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings.

The MBR180S1-7 offers the following advantages for component selection:

• Active Product Status: The MBR180S1-7 is currently in active production, ensuring long-term availability and supply chain stability compared to the obsolete SMD18HE-TP.
• Improved Reverse Leakage: The MBR180S1-7 exhibits lower reverse leakage current (5 µA @ 80 V) compared to the SMD18HE-TP (500 µA @ 80 V), resulting in reduced power dissipation in standby conditions.
• Lower Forward Voltage: The MBR180S1-7 demonstrates lower forward voltage drop (800 mV @ 1 A) compared to the SMD18HE-TP (850 mV @ 2 A), improving efficiency in rectification applications.
• Regulatory Compliance: Both components maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring compatibility with current manufacturing and environmental standards.

The SOD-123 package of the MBR180S1-7 is mechanically compatible with SOD-123H footprints used in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the MBR180S1-7 be used as a direct replacement for the SMD18HE-TP in existing designs?

A: Yes. The MBR180S1-7 meets all electrical specifications (80V reverse voltage, 1A average rectified current, Schottky technology, fast recovery speed) and mechanical requirements (surface mount, SOD-123 package compatible with SOD-123H footprints) of the SMD18HE-TP. Both components operate across the -55°C to 175°C temperature range and maintain identical RoHS3 and MSL 1 compliance.

Q: What is the difference between the SOD-123H package of the SMD18HE-TP and the SOD-123 package of the MBR180S1-7?

A: Both SOD-123H and SOD-123 are surface mount packages with compatible footprints and pin configurations. The MBR180S1-7 in SOD-123 packaging is mechanically interchangeable with the SMD18HE-TP in SOD-123H packaging on standard PCB layouts.

Q: Why does the MBR180S1-7 have lower reverse leakage current than the SMD18HE-TP?

A: Reverse leakage current is a characteristic of the semiconductor die and manufacturing process. The MBR180S1-7 exhibits 5 µA @ 80 V compared to 500 µA @ 80 V for the SMD18HE-TP. This difference reflects manufacturing process improvements and does not affect functional compatibility; lower leakage reduces power dissipation in standby operation.

Q: Are there any temperature range limitations when substituting the MBR180S1-7 for the SMD18HE-TP?

A: The MBR180S1-7 operates from -55°C to 175°C, while the SMD18HE-TP operates from -55°C to 180°C. The MBR180S1-7 is suitable for applications operating within -55°C to 175°C. Applications requiring operation above 175°C must retain the original SMD18HE-TP or identify alternative components with higher temperature ratings.

Q: What is the availability status of each component?

A: The SMD18HE-TP is obsolete with limited inventory (839 Pcs). The MBR180S1-7 is an active product with significantly higher availability (45,247 Pcs). For new designs and production continuity, the MBR180S1-7 is the recommended selection.

Q: Do both components meet the same regulatory and environmental standards?

A: Yes. Both the SMD18HE-TP and MBR180S1-7 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. Both are classified under ECCN EAR99 and HTSUS 8541.10.0080. The MBR180S1-7 additionally carries REACH Unaffected status.