STPS30SM80CFP Equivalent & Substitute Parts

Part Overview

The STPS30SM80CFP is a Schottky diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode device rated for 80 V DC reverse voltage and 15 A average rectified current per diode. The component is packaged in a TO-220-3 Full Pack through-hole configuration and is classified as obsolete product status.

Due to its obsolete classification, direct replacement with active production alternatives is necessary for new designs and ongoing procurement. Substitute parts must maintain electrical compatibility within the specified voltage and current parameters while accommodating any mechanical or thermal variations introduced by alternative manufacturers or enhanced specifications.

Substiute Parts

STPS30SM80CFP

STMicroelectronicsIn Stock: 1567STPS30SM80CFP Datasheet

Current PartRFQ

STPS30150CFP

STMicroelectronicsIn Stock: 2393STPS30150CFP Datasheet

MFR RecommendedRFQ

MBRF3080CT

Taiwan Semiconductor CorporationIn Stock: 2530MBRF3080CT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the STPS30SM80CFP is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack
• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 80 V
• Current - Average Rectified (Io) (per Diode): Equal to or greater than 15 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Acceptable Variation Parameters:

• Voltage - Forward (Vf): May vary within typical Schottky diode operating ranges
• Current - Reverse Leakage: May vary based on manufacturer and temperature rating
• Operating Temperature - Junction: May extend beyond 175°C maximum
• Supplier Device Package designation: May differ while maintaining TO-220-3 Full Pack mechanical compatibility

Substitute parts are grouped into two categories: MFR Recommended (same manufacturer, active status) and Direct Manufacturer (alternative manufacturer, active status).

Parameter Comparison

Engineering Selection Recommendations

STPS30150CFP (MFR Recommended Substitute)

The STPS30150CFP is the manufacturer-recommended substitute for the obsolete STPS30SM80CFP. Both devices are produced by STMicroelectronics and maintain identical diode configuration, technology, and mounting specifications. The STPS30150CFP is classified as active product status, ensuring long-term availability and supply chain continuity.

The STPS30150CFP provides enhanced voltage rating (150 V versus 80 V), which extends application flexibility without compromising current capacity (15 A per diode). Forward voltage increases from 790 mV to 920 mV at rated current, and reverse leakage decreases to 6.5 µA at the higher voltage rating. Both devices maintain ROHS3 compliance and unlimited moisture sensitivity classification.

MBRF3080CT (Direct Manufacturer Substitute)

The MBRF3080CT, manufactured by Taiwan Semiconductor Corporation, provides an alternative substitute maintaining the original 80 V voltage specification and TO-220-3 Full Pack mechanical form factor. This device offers doubled current capacity (30 A per diode versus 15 A), enabling higher power applications within the same voltage envelope.

The MBRF3080CT features an isolated tab variant of the TO-220-3 package, which may require mechanical accommodation in existing PCB layouts. Operating temperature range is constrained to -55°C to 150°C maximum junction temperature, compared to 175°C for the original device. Reverse leakage is elevated to 200 µA at 80 V. ROHS3 compliance and unlimited moisture sensitivity are maintained.

Selection Criteria:

For direct replacement in existing designs operating at 80 V and 15 A, the STPS30150CFP is preferred due to manufacturer continuity and active product status. The MBRF3080CT is suitable for new designs requiring higher current capacity or when Taiwan Semiconductor Corporation supply chain is preferred. Both substitutes satisfy all mandatory compatibility criteria and regulatory compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the STPS30150CFP be used as a direct replacement for the STPS30SM80CFP in existing designs?

A: Yes. The STPS30150CFP maintains identical diode configuration (1 Pair Common Cathode), technology (Schottky), mounting type (Through Hole), and package form factor (TO-220-3 Full Pack). The enhanced voltage rating (150 V) is backward compatible with 80 V applications. Forward voltage and reverse leakage characteristics differ slightly but remain within acceptable Schottky diode operating parameters.

Q: What is the primary difference between the STPS30150CFP and MBRF3080CT substitutes?

A: The STPS30150CFP maintains the original 80 V voltage specification with 15 A current rating and is manufactured by STMicroelectronics. The MBRF3080CT is manufactured by Taiwan Semiconductor Corporation, maintains 80 V voltage specification, but provides doubled current capacity (30 A per diode) and features an isolated tab package variant. Operating temperature maximum is reduced from 175°C to 150°C on the MBRF3080CT.

Q: Are there mechanical compatibility concerns when substituting the MBRF3080CT?

A: The MBRF3080CT uses an isolated tab variant of the TO-220-3 package (designated ITO-220AB), which differs from the standard TO-220-3 Full Pack used by the original STPS30SM80CFP. PCB layout and thermal management designs may require modification to accommodate the isolated tab configuration. Pin-to-pin compatibility is maintained.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. Both the STPS30150CFP and MBRF3080CT are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1) classification, matching the original STPS30SM80CFP specifications.

Q: What is the impact of increased forward voltage in the STPS30150CFP?

A: Forward voltage increases from 790 mV to 920 mV at 15 A rated current. This 130 mV increase results in higher power dissipation in the diode junction. Thermal management design should account for this increase in applications operating at continuous rated current. The voltage increase is typical for Schottky diodes with higher voltage ratings.

Q: Can the MBRF3080CT be used in applications requiring 15 A operation?

A: Yes. The MBRF3080CT is rated for 30 A average rectified current per diode, which exceeds the 15 A requirement of the original STPS30SM80CFP. Operation at 15 A is within the device's safe operating area. However, the reduced maximum junction temperature (150°C versus 175°C) must be verified against thermal design requirements.

Q: Are there supply chain advantages to selecting one substitute over the other?

A: The STPS30150CFP is manufactured by STMicroelectronics, the original manufacturer, and is classified as active product status with 2334 pieces in stock. The MBRF3080CT is manufactured by Taiwan Semiconductor Corporation and is also active with 2420 pieces in stock. Both maintain adequate inventory for procurement. Manufacturer selection should align with existing supply chain relationships and qualification requirements.