SS35HT-TP Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS35HT-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 50 V DC reverse voltage and 3 A average rectified current in a surface mount SOD-123HT package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part maintains ROHS3 compliance and unlimited moisture sensitivity rating, making it suitable for industrial and commercial applications requiring fast recovery rectification.

Substiute Parts

SS35HT-TP

Micro Commercial CoIn Stock: 1134SS35HT-TP Datasheet

Current PartRFQ

SMD36PL-TP

Micro Commercial CoIn Stock: 958SMD36PL-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS35HT-TP is determined by the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Current rating: 3 A average rectified current (exact match required)
• Reverse voltage rating: Minimum 50 V (equal or higher acceptable)
• Technology: Schottky rectifier diode (fast recovery characteristic)
• Mounting type: Surface mount
• Operating temperature range: -55°C to 150°C minimum
• Compliance: ROHS3 and MSL Level 1

Package Compatibility: The SS35HT-TP uses SOD-123HT package. Substitutes may use SOD-123F or SOD-123FL variants, as these represent the same physical footprint family with compatible lead configurations for surface mount assembly.

The identified substitute SMD36PL-TP meets all primary criteria with the following allowances:

• Reverse voltage increased from 50 V to 60 V (higher rating acceptable in application)
• Forward voltage reduced from 700 mV to 650 mV (improved performance characteristic)
• Reverse leakage reduced from 200 µA to 100 µA (improved performance characteristic)
• Package variant SOD-123FL (compatible footprint within SOD-123 family)
• Product status: Active (ensures ongoing availability)

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SMD36PL-TP

The SMD36PL-TP is the direct functional equivalent for SS35HT-TP applications. Selection is based on the following engineering factors:

1. Electrical Compatibility: Both parts share identical current rating (3 A), fast recovery speed characteristic (≤ 500ns), and operating temperature range (-55 to 150°C). The SMD36PL-TP reverse voltage rating of 60 V exceeds the 50 V requirement, providing additional design margin without performance degradation.

2. Performance Improvement: The substitute exhibits lower forward voltage (650 mV vs. 700 mV) and reduced reverse leakage current (100 µA vs. 200 µA), resulting in improved efficiency and reduced standby power consumption.

3. Compliance and Certification: Both parts maintain ROHS3 compliance and MSL Level 1 rating. The substitute carries REACH Unaffected status, confirming regulatory alignment.

4. Availability and Manufacturing Status: The SMD36PL-TP is actively manufactured by Micro Commercial Co, ensuring long-term supply continuity. The SS35HT-TP obsolete status necessitates transition to this active equivalent.

5. Package Compatibility: The SOD-123F package variant is mechanically and electrically compatible with SOD-123HT footprints in standard surface mount assembly processes. No PCB redesign is required.

Application Scope: The SMD36PL-TP is suitable for all applications previously served by SS35HT-TP, including rectification circuits, power supply designs, and switching applications requiring Schottky diode characteristics in the 3 A current range.

Frequently Asked Questions (FAQ)

Q: Can SMD36PL-TP directly replace SS35HT-TP without PCB modification?

A: Yes. Both parts use compatible SOD-123 family packages with identical lead spacing and mounting footprint. No PCB redesign is necessary for direct substitution in surface mount assembly.

Q: What is the significance of the higher 60 V rating on SMD36PL-TP compared to the 50 V rating of SS35HT-TP?

A: The higher reverse voltage rating provides additional design margin and overvoltage protection capability. In applications designed for 50 V operation, the 60 V rated substitute operates within safe limits with improved reliability margin. No circuit modification is required.

Q: Are there any thermal or performance differences between these parts?

A: Both parts share identical operating temperature range (-55 to 150°C) and fast recovery speed specification (≤ 500ns). The SMD36PL-TP exhibits lower forward voltage drop (650 mV vs. 700 mV) and reduced reverse leakage (100 µA vs. 200 µA), resulting in lower power dissipation and improved efficiency.

Q: What is the difference between SOD-123HT and SOD-123FL packages?

A: Both are variants within the SOD-123 family with identical footprint dimensions and lead configurations suitable for surface mount assembly. The designations reflect minor manufacturing variations by the supplier. Electrical performance and PCB compatibility remain unchanged.

Q: Is the SMD36PL-TP available in the same packaging format (Tape & Reel)?

A: Yes. The SMD36PL-TP is supplied in Tape & Reel (TR) format, standard for high-volume surface mount production. Current inventory is 909 pieces in new original condition.

Q: Why is SS35HT-TP classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. The SMD36PL-TP represents the current active equivalent, ensuring access to ongoing supply and manufacturing support.

Q: Are there any compliance or certification differences?

A: Both parts maintain ROHS3 compliance and MSL Level 1 rating. The SMD36PL-TP additionally carries REACH Unaffected status, confirming full regulatory alignment for current and future applications.