30WQ15FN Equivalent & Substitute Parts

Part Overview

The 30WQ15FN is a Schottky rectifier diode manufactured by SMC Diode Solutions, rated for 150 V DC reverse voltage and packaged in a Surface Mount DPAK configuration. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). The 30WQ15FN is designed for fast recovery applications with switching speeds ≤ 500 ns at currents exceeding 200 mA. Substitute parts are identified to provide alternative sourcing options when the primary component is unavailable or when design requirements necessitate different electrical performance characteristics within the same voltage and package class.

Substiute Parts

30WQ15FN

SMC Diode SolutionsIn Stock: 321830WQ15FN Datasheet

Current PartRFQ

V20PW15-M3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 3095V20PW15-M3/I Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 30WQ15FN are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 150 V
• Technology: Schottky
• Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
• Mounting Type: Surface Mount
• Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Current - Average Rectified (Io): May differ based on application requirements
• Voltage - Forward (Vf) (Max) @ If: May vary with different current ratings
• Current - Reverse Leakage @ Vr: May differ within acceptable limits
• Capacitance @ Vr, F: May differ based on junction design
• Operating Temperature - Junction: May extend or contract within industrial ranges
• REACH Status: May differ (Affected vs. Unaffected)

The V20PW15-M3/I qualifies as a substitute part because it maintains identical reverse voltage rating, Schottky technology, DPAK package configuration, fast recovery speed classification, and RoHS3 compliance. Differences in forward voltage, reverse leakage current, and capacitance reflect the higher current rating (20 A) of the substitute part.

Parameter Comparison

Engineering Selection Recommendations

Both the 30WQ15FN and V20PW15-M3/I maintain Active product status and are RoHS3 compliant with unlimited moisture sensitivity levels, ensuring compliance with current environmental and regulatory standards. Both components are classified as fast recovery Schottky diodes with identical reverse voltage ratings and package configurations suitable for Surface Mount assembly.

The 30WQ15FN is appropriate for applications requiring lower forward voltage drop at moderate current levels (3 A reference point) and extended junction temperature operation up to 175°C. The V20PW15-M3/I is suitable for higher current applications (20 A rated) where increased current handling capacity is required, though this results in higher forward voltage drop and reduced maximum junction temperature (150°C).

Selection between these parts depends on circuit current requirements and thermal operating conditions. Both parts satisfy the mandatory electrical and mechanical compatibility criteria for direct substitution within the 150 V Schottky rectifier diode category.

Frequently Asked Questions (FAQ)

Q: Can the V20PW15-M3/I directly replace the 30WQ15FN in all applications?

A: Direct replacement is possible only when circuit current requirements do not exceed the 30WQ15FN's design specifications and when the maximum junction temperature of 150°C (V20PW15-M3/I) is acceptable for the application. Both parts share identical reverse voltage rating, Schottky technology, DPAK package, and fast recovery speed classification. Differences in forward voltage and reverse leakage current must be evaluated against specific circuit performance requirements.

Q: What is the significance of the different forward voltage specifications?

A: The 30WQ15FN specifies 830 mV forward voltage at 3 A, while the V20PW15-M3/I specifies 1.47 V at 20 A. These values reflect different current ratings and junction designs. Forward voltage drop directly affects power dissipation and circuit efficiency. Selection should be based on the actual operating current of the application.

Q: Are both parts suitable for the same PCB assembly process?

A: Both parts are Surface Mount components in TO-252-3 DPAK package configuration with identical lead and tab geometry (SC-63). The 30WQ15FN uses standard DPAK packaging, while the V20PW15-M3/I uses SlimDPAK variant. Both are compatible with standard Surface Mount assembly equipment and reflow soldering processes. Physical footprint differences between DPAK and SlimDPAK variants must be verified against PCB layout requirements.

Q: What is the difference between DPAK and SlimDPAK packaging?

A: Both are TO-252-3 package variants with identical electrical lead configuration and tab structure (SC-63). SlimDPAK represents a space-optimized variant of the standard DPAK package. PCB footprint compatibility must be confirmed before substitution, as physical dimensions may differ despite electrical equivalence.

Q: How do the reverse leakage current specifications compare?

A: The 30WQ15FN specifies 1 mA reverse leakage at 150 V, while the V20PW15-M3/I specifies 250 µA at the same voltage. Lower reverse leakage in the substitute part indicates reduced standby current consumption. This difference is acceptable for most applications and may provide improved performance in low-power standby conditions.

Q: Are there temperature operating range considerations for substitution?

A: The 30WQ15FN operates to 175°C junction temperature, while the V20PW15-M3/I operates to 150°C. Applications requiring operation above 150°C junction temperature require the 30WQ15FN. For applications with maximum junction temperatures below 150°C, both parts are suitable.

Q: What compliance certifications apply to both parts?

A: Both the 30WQ15FN and V20PW15-M3/I are RoHS3 compliant and carry unlimited moisture sensitivity level (MSL 1) ratings. Both are classified as Active products. The 30WQ15FN is REACH Affected, while the V20PW15-M3/I is REACH Unaffected. Both carry EAR99 ECCN classification and identical HTSUS code 8541.10.0080.