SK84C Schottky Diode Equivalent & Substitute Parts

Part Overview

The SK84C is an active Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 40V DC reverse voltage and 8A average rectified current in a surface mount DO-214AB (SMC) package. This component is designed for fast recovery applications requiring switching speeds of 500ns or less at currents exceeding 200mA. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical specifications.

Substiute Parts

SK84C

Taiwan Semiconductor CorporationIn Stock: 4097SK84C Datasheet

Current PartRFQ

SK84C

MDDIn Stock: 4109SK84C Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SK84C are identified based on strict equivalence across the following critical parameters:

• Voltage Rating: DC reverse voltage of 40V maximum
• Current Rating: Average rectified current of 8A
• Technology: Schottky diode construction
• Package: DO-214AB (SMC) surface mount configuration
• Speed Classification: Fast recovery characteristics with switching speed ≤ 500ns at currents > 200mA
• Compliance: ROHS3 compliance and MSL Level 1 rating
• Mounting: Surface mount technology for automated assembly

Parts meeting all these criteria are classified as direct substitutes. Reverse leakage current and forward voltage characteristics may vary within acceptable ranges for the application category while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both SK84C variants meet the core electrical and mechanical requirements for direct substitution in applications requiring 40V, 8A Schottky rectifier diodes in DO-214AB surface mount packages. Selection between manufacturers is based on:

Product Status: Both parts are classified as active products with current manufacturing support.

Compliance Certifications: Both variants maintain ROHS3 compliance and REACH unaffected status, suitable for regulated markets and applications with environmental compliance requirements.

Moisture Sensitivity: Both parts carry MSL Level 1 (Unlimited) rating, indicating no moisture sensitivity constraints during storage or handling.

Reverse Leakage Characteristics: The MDD variant exhibits higher reverse leakage current (1 mA @ 40V) compared to the Taiwan Semiconductor variant (500 µA @ 40V). This difference remains within acceptable parameters for Schottky diode applications but should be evaluated for low-leakage circuit requirements.

Forward Voltage: The MDD variant specifies forward voltage of 550 mV @ 8A, providing additional design reference data not provided for the Taiwan Semiconductor variant.

Capacitance Specification: The MDD variant provides capacitance data (900pF @ 4V, 1MHz), enabling more precise circuit modeling for high-frequency applications.

Selection should prioritize inventory availability, lead time, and cost considerations while maintaining compliance with application-specific performance requirements.

Frequently Asked Questions (FAQ)

Q: Can the SK84C (MDD) directly replace the SK84C (Taiwan Semiconductor) in existing designs?

A: Yes. Both parts share identical voltage ratings (40V), current ratings (8A), package configuration (DO-214AB/SMC), and fast recovery speed classification. Both maintain ROHS3 compliance and MSL Level 1 ratings. The higher reverse leakage current in the MDD variant (1 mA vs. 500 µA @ 40V) is within acceptable ranges for standard Schottky rectifier applications.

Q: What are the critical parameters that define substitution eligibility for SK84C diodes?

A: Substitution eligibility is determined by: (1) DC reverse voltage rating of 40V maximum, (2) average rectified current of 8A, (3) Schottky technology, (4) DO-214AB (SMC) surface mount package, (5) fast recovery speed classification (≤ 500ns at > 200mA), and (6) ROHS3 compliance with MSL Level 1 rating.

Q: Are there differences in forward voltage characteristics between the two SK84C variants?

A: The MDD variant specifies forward voltage of 550 mV @ 8A. Forward voltage data for the Taiwan Semiconductor variant is not provided in the available specifications. Forward voltage differences within typical Schottky diode ranges do not affect substitution eligibility for standard rectification applications.

Q: How does the reverse leakage current difference affect circuit performance?

A: The MDD variant exhibits 1 mA reverse leakage @ 40V compared to 500 µA for the Taiwan Semiconductor variant. This 2x difference remains within acceptable parameters for Schottky rectifier applications. Applications requiring ultra-low leakage characteristics should specify the Taiwan Semiconductor variant.

Q: Are both parts suitable for automated surface mount assembly?

A: Yes. Both SK84C variants are classified as surface mount components in DO-214AB (SMC) packages, compatible with standard pick-and-place and reflow soldering processes. Moisture sensitivity level 1 (Unlimited) indicates no special handling or baking requirements.

Q: What is the operating temperature range for both SK84C variants?

A: Both parts operate across a junction temperature range of -55°C to 125°C, suitable for industrial and commercial temperature environments.

Q: Do both parts meet environmental and regulatory compliance requirements?

A: Yes. Both SK84C variants are ROHS3 compliant and REACH unaffected, meeting environmental regulations for restricted substances and hazardous material restrictions in regulated markets.