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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Vishay General Semiconductor - Diodes Division SS5P9-M3/87A

Name: SS5P9-M3/87A
Brand: Vishay General Semiconductor - Diodes Division
SKU: SS5P9-M3/87A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SS5P9-M3/87A

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Diodes

Package:: TO-277, 3-PowerDFN

Datasheet:: SS5P9-M3/87A.pdf

Description:: DIODE SCHOTTKY 90V 5A TO277A

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Product details

Overview

SS5P9-M3/87A from Vishay General Semiconductor is a high-current-density surface-mount Schottky barrier rectifier in SMPC (TO-277A) package, rated for 90 V repetitive peak reverse voltage, 5.0 A average forward current, and 150 A non-repetitive surge current. It delivers low forward voltage drop (0.649 V at 5.0 A, 25 °C), low thermal resistance (R_θJL = 3 °C/W), and operates up to 150 °C junction temperature - ideal for compact DC/DC converters requiring high efficiency and polarity protection.

For engineers reviewing the SS5P9-M3/87A datasheet, SS5P9-M3/87A pinout, SS5P9-M3/87A application, or SS5P9-M3/87A equivalent, key selection criteria include its 90 V V_RRM, 0.649 V V_F at 5 A, 130 pF junction capacitance, AEC-Q101 qualification eligibility (via HM3 suffix), and MSL Level 1 moisture sensitivity rating for reflow compatibility.

Technical Context

The SS5P9-M3/87A implements a single-anode, dual-cathode configuration within the SMPC (TO-277A) package, enabling low-inductance, high-current freewheeling paths. Its guardring structure provides overvoltage protection, while the low R_θJL of 3 °C/W ensures effective heat transfer to the PCB pad under continuous 5 A load.

Designed for high-frequency switching applications, it exhibits 130 pF typical junction capacitance at 4.0 V / 1 MHz and maintains stable reverse leakage (< 4.5 μA at 25 °C, < 5 mA at 125 °C), supporting efficient operation in SMPS topologies with minimal switching loss and EMI generation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	90 V - supports input rails up to 72 V DC with 25 % safety margin in industrial DC/DC converters
I_F(AV)	5.0 A - sustains continuous output current in 12 V–48 V intermediate bus converters without derating below 125 °C
V_F @ 5.0 A	0.649 V - reduces conduction loss to ≤3.25 W, minimizing thermal stress on PCB layout
I_FSM	150 A - withstands short-duration inrush or fault currents in power supply startup and overload conditions
R_θJL	3 °C/W - enables direct thermal coupling to copper pour, allowing >4 W dissipation with ≤12 °C rise above board temperature
C_J	130 pF - limits capacitive turn-on loss and dV/dt-induced ringing in >100 kHz switch-mode circuits
T_J max	150 °C - permits operation in sealed enclosures or high-ambient environments such as automotive engine bays

Pinout & Package

Package: SMPC (TO-277A), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Dimensions: 4.80 × 4.40 × 1.10 mm (L × W × H), with 1.24 mm lead pitch and matte tin-plated terminals solderable per J-STD-002.

Pin/Terminal	Circuit Role	Design Meaning
Anode 1	Primary anode connection	Carries full forward current path; electrically tied to Anode 2 internally in single-diode configuration
Anode 2	Secondary anode terminal	Provides mechanical symmetry and low-inductance parallel routing; not isolated from Anode 1
Cathode (K)	Common cathode node	Single low-impedance return path for both anodes; marked by band on package body

Key Features

Feature	Design Value
Guardring overvoltage protection	Prevents premature avalanche breakdown under transient voltage spikes, improving system reliability in noisy power rails
Low profile (1.1 mm height)	Enables use in ultra-thin power modules and stacked PCB assemblies where Z-height is constrained to < 1.2 mm
Low thermal resistance (R_θJL = 3 °C/W)	Allows direct thermal transfer to PCB copper, eliminating need for external heatsinks in 5 A designs
J-STD-020 MSL Level 1 rating	Permits unlimited floor life and single-reflow processing without baking, simplifying SMT line logistics
AEC-Q101 qualification path	Supports automotive-grade sourcing via HM3 suffix variants, with validated stress testing for under-hood deployment

Applications

Server VRM Output Stage	Industrial PLC Power Input
Use Scenario: High-efficiency synchronous rectification in 48 V–12 V buck converters powering CPU/GPU VRMs. IC Role / Device Role / Timing Role: Freewheeling Schottky rectifier replacing MOSFET synchronous switches in cost-sensitive, thermally constrained layouts. Use Value: 0.649 V V_F minimizes conduction loss vs. silicon diodes, reducing VRM thermal footprint by ≥35 % at 5 A load.	Use Scenario: Polarity protection and reverse-current blocking at 24 V DC input of programmable logic controllers. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage from accidental reverse battery or supply connection. Use Value: 90 V V_RRM and 150 A I_FSM ensure robustness against 40 V transients and hot-swap inrush events.
Telecom DC/DC Module	Automotive Body Control Unit
Use Scenario: Output rectification in isolated 48 V–5 V flyback converters used in base station power supplies. IC Role / Device Role / Timing Role: High-frequency rectifier operating at 200–500 kHz with minimal reverse recovery charge. Use Value: 130 pF C_J and near-zero Q_RR eliminate switching tail losses, improving efficiency by 1.2–1.8 % at 300 kHz.	Use Scenario: Reverse-battery protection in 12 V body electronics modules exposed to jump-start conditions. IC Role / Device Role / Timing Role: Low-V_F series-blocking diode in main power rail before LDOs and microcontrollers. Use Value: 0.649 V V_F limits voltage drop to < 3.25 mV per amp, preserving headroom for 5 V logic under 5 A load.

Server VRM Output Stage

Industrial PLC Power Input

Use Scenario: High-efficiency synchronous rectification in 48 V–12 V buck converters powering CPU/GPU VRMs.

IC Role / Device Role / Timing Role: Freewheeling Schottky rectifier replacing MOSFET synchronous switches in cost-sensitive, thermally constrained layouts.

Use Value: 0.649 V V_F minimizes conduction loss vs. silicon diodes, reducing VRM thermal footprint by ≥35 % at 5 A load.

Use Scenario: Polarity protection and reverse-current blocking at 24 V DC input of programmable logic controllers.

IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage from accidental reverse battery or supply connection.

Use Value: 90 V V_RRM and 150 A I_FSM ensure robustness against 40 V transients and hot-swap inrush events.

Telecom DC/DC Module

Automotive Body Control Unit

Use Scenario: Output rectification in isolated 48 V–5 V flyback converters used in base station power supplies.

IC Role / Device Role / Timing Role: High-frequency rectifier operating at 200–500 kHz with minimal reverse recovery charge.

Use Value: 130 pF C_J and near-zero Q_RR eliminate switching tail losses, improving efficiency by 1.2–1.8 % at 300 kHz.

Use Scenario: Reverse-battery protection in 12 V body electronics modules exposed to jump-start conditions.

IC Role / Device Role / Timing Role: Low-V_F series-blocking diode in main power rail before LDOs and microcontrollers.

Use Value: 0.649 V V_F limits voltage drop to < 3.25 mV per amp, preserving headroom for 5 V logic under 5 A load.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SS5P9HM3_A/I	AEC-Q101 qualified; identical electrical specs; same SMPC package; differs only in qualification status and reel size (6500 pcs)	Required for automotive production programs needing PPAP documentation and stress-tested reliability data	Select SS5P9HM3_A/I when automotive qualification is mandatory; otherwise SS5P9-M3/87A suffices for commercial/industrial use
MBR590FCT	Same 90 V V_RRM, 5 A rating, but TO-277 (not TO-277A); slightly higher V_F (0.72 V @ 5 A); R_θJA = 70 °C/W vs. 65 °C/W	Larger footprint (5.3 × 4.6 mm) and taller profile (2.3 mm) limit use in space-constrained modules	Choose MBR590FCT only if legacy TO-277 footprint compatibility is required; SS5P9-M3/87A offers superior thermal performance and lower profile

Compared with SS5P9HM3_A/I and MBR590FCT, the SS5P9-M3/87A delivers optimal balance of low-profile packaging, commercial-grade cost efficiency, and verified thermal performance - making it preferred for high-volume industrial and telecom power supplies where AEC-Q101 is unnecessary and board space is premium.

Availability

SS5P9-M3/87A is available at Aetrix Electronics and suitable for server VRMs, industrial PLCs, telecom DC/DC modules, and automotive body control units requiring stable component supply, consistent tape-and-reel delivery, and long-term production support.

Supply support for SS5P9-M3/87A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on power efficiency and reliability.

The SS5P9-M3/87A belongs to Vishay's eSMP® Schottky rectifier family, engineered for high-current, high-frequency power conversion in space-constrained applications where low V_F, low profile, and robust thermal behavior are critical.

FAQ

What is the maximum junction temperature rating for the SS5P9-M3/87A?

The SS5P9-M3/87A has a maximum operating junction temperature of +150 °C, as specified in the Vishay datasheet (Document Number: 88984). This rating allows reliable operation in high-ambient environments such as enclosed industrial power supplies or under-hood automotive locations when mounted on recommended 1 oz. copper pads. The SS5P9-M3/87A must be thermally designed to maintain T_J ≤ 150 °C under worst-case load and ambient conditions.

Is the SS5P9-M3/87A pin-compatible with the SS5P10-M3/87A?

No - the SS5P9-M3/87A and SS5P10-M3/87A share identical SMPC (TO-277A) package, pinout, and mechanical dimensions, but differ in maximum repetitive peak reverse voltage (90 V vs. 100 V) and associated electrical characteristics such as reverse leakage and forward voltage curve. While physically interchangeable on PCB, substituting SS5P9-M3/87A for SS5P10-M3/87A requires verification that 90 V V_RRM meets system overvoltage margin requirements. The SS5P9-M3/87A remains functionally valid in all designs originally specifying SS5P10-M3/87A only if voltage stress stays below 90 V.

Does the SS5P9-M3/87A meet automotive qualification standards?

The SS5P9-M3/87A is commercial-grade and not AEC-Q101 qualified. However, Vishay offers the SS5P9HM3_A/I variant - identical in all electrical and mechanical specifications except for AEC-Q101 qualification, halogen-free compliance, and different reel packaging. If automotive qualification is required, SS5P9HM3_A/I must be selected instead of SS5P9-M3/87A. The SS5P9-M3/87A itself carries no AEC-Q101 certification.

What is the moisture sensitivity level (MSL) rating for the SS5P9-M3/87A?

The SS5P9-M3/87A is rated MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This means it has unlimited floor life and may be subjected to standard lead-free reflow profiles without prior baking. The MSL Level 1 rating is confirmed in the Vishay datasheet and applies specifically to the M3-suffix commercial-grade version, including SS5P9-M3/87A.

How does the SS5P9-M3/87A compare to standard silicon rectifiers in efficiency-critical applications?

The SS5P9-M3/87A achieves significantly higher efficiency than standard silicon PN-junction rectifiers due to its Schottky architecture: zero reverse recovery charge (Q_RR ≈ 0), lower forward voltage (0.649 V vs. ~0.9–1.1 V), and reduced switching losses. In a 5 A, 200 kHz DC/DC converter, this translates to ~1.5 W less conduction loss and elimination of recovery-related EMI. The SS5P9-M3/87A is therefore preferred in high-frequency, high-efficiency power stages where thermal and electrical performance are prioritized.

SS5P9-M3/87A Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: eSMP®

Package/Case:: TO-277, 3-PowerDFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 90 V

Current - Average Rectified (Io):: 5A

Voltage - Forward (Vf) (Max) @ If:: 880 mV @ 5 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 15 µA @ 90 V

Capacitance @ Vr, F:: 130pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-277A (SMPC)

Operating Temperature - Junction:: -55°C ~ 150°C

SS5P9-M3/87A FAQ

1.How can I place an order for SS5P9-M3/87A through Aetrix?

Please submit a Request for Quotation (RFQ) for SS5P9-M3/87A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SS5P9-M3/87A reliable?

The price and inventory of SS5P9-M3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS5P9-M3/87A is usually 5 days.

3.What payment methods are accepted for SS5P9-M3/87A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS5P9-M3/87A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SS5P9-M3/87A?

SS5P9-M3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SS5P9-M3/87A order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SS5P9-M3/87A?

For technical support, including SS5P9-M3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS5P9-M3/87A requirements.

6.How does Aetrix verify that SS5P9-M3/87A is sourced from the original manufacturer or authorized distributors?

All SS5P9-M3/87A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SS5P9-M3/87A meets industry standards.

7.What is the process for return or replacement of SS5P9-M3/87A?

All SS5P9-M3/87A units undergo pre-shipment inspection (PSI). If there is an issue with SS5P9-M3/87A, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SS5P9-M3/87A part is unused and in its original packaging.

Return procedure for SS5P9-M3/87A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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