STPS40L15CW Equivalent & Substitute Parts

Part Overview

The STPS40L15CW is a Schottky diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode arrangement with a 15 V DC reverse voltage rating and 20 A average rectified current per diode. The device is packaged in a Through Hole TO-247-3 case and is classified as Active product status with full RoHS3 compliance. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when supply chain diversification is required.

Substiute Parts

STPS40L15CW

STMicroelectronicsIn Stock: 1311STPS40L15CW Datasheet

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MBR4015LWTG

onsemiIn Stock: 1154MBR4015LWTG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the STPS40L15CW is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 15 V
• Current - Average Rectified (Io) (per Diode): 20 A
• Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
• Mounting Type: Through Hole
• Package / Case: TO-247-3

The MBR4015LWTG manufactured by onsemi meets all mandatory matching parameters and qualifies as a direct substitute. Both devices share identical electrical ratings, diode configuration, and physical packaging, enabling pin-compatible replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the STPS40L15CW and MBR4015LWTG are Active product status devices with full RoHS3 compliance and REACH Unaffected designation, confirming regulatory alignment for industrial and commercial applications. The MBR4015LWTG offers an extended operating temperature range (-55°C to 150°C) compared to the STPS40L15CW maximum junction temperature of 125°C, providing additional thermal margin in applications requiring wider temperature operation. The forward voltage differential of 10 mV between the two devices at their respective rated currents is within typical manufacturing tolerance bands for Schottky diode technology and does not constitute a functional limitation for substitution purposes. Both devices maintain identical reverse leakage characteristics within acceptable engineering variance. Selection between these parts is determined by supply availability, thermal operating requirements, and manufacturer preference within the design specification.

Frequently Asked Questions (FAQ)

Q: Can the MBR4015LWTG replace the STPS40L15CW in existing circuit designs?

A: Yes. Both devices are pin-compatible TO-247-3 packages with identical diode configuration (1 Pair Common Cathode), voltage rating (15 V), and current rating (20 A). Direct substitution is supported without circuit modification.

Q: What is the significance of the forward voltage difference between these parts?

A: The STPS40L15CW specifies 410 mV @ 19 A while the MBR4015LWTG specifies 420 mV @ 20 A. This 10 mV variance is within normal manufacturing tolerance for Schottky diodes and does not affect circuit functionality or performance in standard rectification applications.

Q: Does the extended temperature range of the MBR4015LWTG affect substitution suitability?

A: The MBR4015LWTG operating range of -55°C to 150°C encompasses the STPS40L15CW maximum junction temperature of 125°C. The extended range provides additional thermal capability but does not prevent substitution in applications limited to the STPS40L15CW temperature specification.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both the STPS40L15CW and MBR4015LWTG are RoHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic components.

Q: What packaging considerations apply to these substitute parts?

A: Both devices use identical Through Hole TO-247-3 packaging. No PCB layout modifications, thermal management adjustments, or mechanical mounting changes are required for substitution.

Q: How do reverse leakage characteristics compare between these parts?

A: The STPS40L15CW specifies 6 mA @ 15 V reverse leakage while the MBR4015LWTG specifies 5 mA @ 15 V. The 1 mA difference is within acceptable engineering variance for Schottky diode technology and does not impact circuit performance.