STPS0520M Equivalent & Substitute Parts

Part Overview

The STPS0520M is a Schottky rectifier diode manufactured by STMicroelectronics, rated for 20 V DC reverse voltage and 500 mA average rectified current. This component is packaged in DO-216AA surface mount configuration with STmite supplier packaging. The STPS0520M is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating the surface mount package standard.

Substiute Parts

STPS0520M

STMicroelectronicsIn Stock: 7945STPS0520M Datasheet

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MBRM120ET1G

onsemiIn Stock: 25061MBRM120ET1G Datasheet

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MBRM120ET3G

onsemiIn Stock: 125394MBRM120ET3G Datasheet

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MBRM120LT1G

onsemiIn Stock: 125509MBRM120LT1G Datasheet

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MBRM120LT3G

onsemiIn Stock: 16455MBRM120LT3G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the STPS0520M is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): 20 V minimum
• Mounting Type: Surface Mount
• Package / Case: DO-216AA
• Technology: Schottky
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• RoHS Status: ROHS3 Compliant

Current Rating Consideration: The STPS0520M operates at 500 mA average rectified current. Substitute parts rated at 1 A (1000 mA) provide higher current capacity while maintaining all other electrical and mechanical specifications. This uprating is acceptable for applications where the circuit design does not exceed the original 500 mA specification.

Thermal Operating Range: The STPS0520M specifies a maximum junction temperature of 150°C. Substitute parts with extended operating temperature ranges (-65°C to 150°C or -55°C to 125°C) are compatible with applications requiring the original 150°C maximum specification.

All four substitute parts (MBRM120ET1G, MBRM120ET3G, MBRM120LT1G, MBRM120LT3G) manufactured by onsemi meet the mandatory compatibility criteria and are classified as active products.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The STPS0520M is classified as obsolete. All four substitute parts (MBRM120ET1G, MBRM120ET3G, MBRM120LT1G, MBRM120LT3G) are active products manufactured by onsemi, ensuring long-term availability and supply chain continuity.

Compliance and Certification: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original component. Moisture sensitivity level remains at MSL 1 (Unlimited) across all alternatives.

Current Rating Uprating: Substitute parts are rated at 1 A average rectified current, compared to the STPS0520M specification of 500 mA. This uprating provides design margin for applications operating at or below the original 500 mA specification. Circuit designs must not exceed 500 mA to maintain equivalence with the original component.

Forward Voltage Characteristics: MBRM120ET1G and MBRM120ET3G specify 530 mV forward voltage at 1 A, while MBRM120LT1G and MBRM120LT3G specify 450 mV at 1 A. The original STPS0520M specifies 385 mV at 500 mA. Forward voltage differences must be evaluated in applications sensitive to voltage drop characteristics.

Reverse Leakage Current: MBRM120ET1G and MBRM120ET3G specify 10 µA reverse leakage at 20 V, lower than the STPS0520M specification of 50 µA. MBRM120LT1G and MBRM120LT3G specify 400 µA reverse leakage at 20 V, higher than the original component. Applications with leakage-sensitive specifications must account for these differences.

Operating Temperature Range: MBRM120ET1G and MBRM120ET3G support -65°C to 150°C operating range, exceeding the STPS0520M maximum of 150°C. MBRM120LT1G and MBRM120LT3G support -55°C to 125°C, which does not reach the original 150°C maximum. Temperature-constrained applications must select accordingly.

Frequently Asked Questions (FAQ)

Q: Can MBRM120ET1G, MBRM120ET3G, MBRM120LT1G, or MBRM120LT3G directly replace STPS0520M in existing designs?

A: Yes, all four substitute parts are pin-compatible in DO-216AA surface mount package configuration. Electrical compatibility is maintained across the 20 V reverse voltage rating and fast recovery Schottky technology. However, circuit designs must operate at or below 500 mA to maintain functional equivalence with the original component specification.

Q: What is the difference between MBRM120ET and MBRM120LT variants?

A: The primary differences are forward voltage and reverse leakage specifications. MBRM120ET variants specify 530 mV forward voltage and 10 µA reverse leakage at rated conditions. MBRM120LT variants specify 450 mV forward voltage and 400 µA reverse leakage. Additionally, MBRM120ET variants support -65°C to 150°C operating range, while MBRM120LT variants support -55°C to 125°C.

Q: What is the significance of the "1G" and "3G" designations in part numbers?

A: The "1G" and "3G" designations indicate different packaging tape configurations (Cut Tape and Digi-Reel options). MBRM120ET1G and MBRM120LT1G are supplied in Cut Tape format. MBRM120ET3G and MBRM120LT3G are supplied in Digi-Reel format. Electrical specifications are identical between 1G and 3G variants of the same base part number.

Q: Are all substitute parts RoHS compliant?

A: Yes, all four substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the STPS0520M.

Q: What is the current rating difference between STPS0520M and the substitute parts?

A: The STPS0520M is rated for 500 mA average rectified current. All substitute parts are rated for 1 A (1000 mA). This represents a 2x uprating. Applications must not exceed 500 mA to maintain functional equivalence with the original component.

Q: Which substitute part should be selected for applications requiring maximum operating temperature of 150°C?

A: MBRM120ET1G and MBRM120ET3G support operating temperatures up to 150°C, matching the STPS0520M specification. MBRM120LT1G and MBRM120LT3G are limited to 125°C maximum junction temperature and are not suitable for applications requiring 150°C operation.

Q: How do forward voltage specifications affect circuit design?

A: Forward voltage drop directly impacts power dissipation and voltage regulation in rectifier circuits. The STPS0520M specifies 385 mV at 500 mA. MBRM120ET variants specify 530 mV at 1 A, while MBRM120LT variants specify 450 mV at 1 A. Circuits sensitive to forward voltage drop must account for these differences in thermal and voltage regulation calculations.

Q: Are the substitute parts available in the same packaging format as STPS0520M?

A: Yes, all substitute parts are supplied in DO-216AA surface mount package, identical to the STPS0520M. Packaging options differ between Cut Tape (CT) and Digi-Reel formats, but the component footprint and pinout remain consistent.