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

STMicroelectronics STPS30M100SR

Name: STPS30M100SR
Brand: STMicroelectronics
SKU: STPS30M100SR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS30M100SR

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: TO-262-3 Long Leads, I2PAK, TO-262AA

Datasheet:: STPS30M100SR.pdf

Description:: DIODE SCHOTTKY 100V 30A I2PAK

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Product details

Overview

STPS30M100SR from STMicroelectronics is a 100 V, 30 A average forward current Schottky rectifier in TO-220AB/TO-220FPAB packages, optimized for high-frequency SMPS and DC/DC converters. It delivers low forward voltage (0.605 V typ. at 30 A, 125 °C), specified avalanche capability (1900 W peak), and ECOPACK®2 compliance for notebook adapters and LED lighting power stages.

For engineers reviewing the STPS30M100SR datasheet, STPS30M100SR pinout, STPS30M100SR application, or STPS30M100SR equivalent, key selection criteria include junction-to-case thermal resistance (1 °C/W for TO-220AB), reverse leakage (20–50 mA at 125 °C, V_RRM), and conduction loss modeling using P = 0.475 × I_F(AV) + 0.006 × I_F(RMS)².

Technical Context

This Schottky rectifier operates as a unidirectional power switching diode with metal–semiconductor junction architecture, enabling high-frequency operation without minority-carrier storage delay. Its 100 V repetitive peak reverse voltage and 300 A non-repetitive surge rating support robust transient handling in flyback and forward converter topologies.

Thermal design is enabled by dual-package options: TO-220AB offers 1 °C/W junction-to-case resistance for heatsink-mounted applications, while TO-220FPAB provides 4 °C/W and footprint compatibility with surface-mount assembly constraints. Avalanche energy rating (1900 W at 10 µs, T_j = 125 °C) is explicitly characterized for overvoltage event resilience.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse blocking voltage; defines maximum input/output differential in buck-derived topologies.
I_F(AV)	30 A - Average forward current rating at T_c = 110 °C (TO-220AB); sets continuous output capability in 65–100 W adapter designs.
V_F (typ.)	0.605 V @ 30 A, 125 °C - Low conduction loss enables >92% efficiency in 12 V/2.5 A to 19 V/3.5 A laptop adapters.
I_R	20–50 mA @ 125 °C, V_RRM - Controlled leakage ensures minimal standby power loss in energy-efficient PSUs meeting DoE Level VI.
R_th(j-c)	1 °C/W (TO-220AB) - Enables direct heatsink mounting with predictable thermal rise; critical for derating above 75 °C ambient.
P_ARM	1900 W @ 10 µs - Quantified avalanche energy supports reliable operation during MOSFET turn-off overshoot in synchronous rectification circuits.

Pinout & Package

STPS30M100SR is available in two thermally optimized through-hole packages: TO-220AB (standard flange, 1 °C/W R_th(j-c)) and TO-220FPAB (full-pack flange, 4 °C/W). Both use 3-terminal configuration with isolated tab (cathode-connected case).

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Input current entry point	Connected to switch node (e.g., MOSFET drain) in secondary-side rectification; requires low-inductance PCB routing.
Cathode (Pin 2)	Output current exit point	Directly tied to output capacitor and load; serves as reference for feedback sensing in regulated supplies.
Case/Tab (Pin 3)	Cathode terminal (electrically connected)	Provides mechanical mounting and thermal path; must be electrically isolated from heatsink unless cathode-referenced layout is used.

Key Features

Feature	Design Value
Low forward voltage drop	0.605 V typ. @ 30 A, 125 °C reduces conduction losses by ≥15% vs. comparable 100 V Si diodes in 50–100 kHz SMPS.
Avalanche capability	1900 W peak power (10 µs pulse, T_j = 125 °C) allows safe operation during voltage transients without external clamping.
ECOPACK®2 compliance	Halogen-free, RoHS-compliant epoxy meets UL 94 V0 flammability standard for consumer and industrial safety certification.
High-frequency suitability	No reverse recovery charge (Q_rr ≈ 0) eliminates switching loss and EMI associated with PN-junction diodes above 100 kHz.

Applications

Desktop Power Supply

LED Lighting Driver

Use Scenario: Secondary-side rectification in 150–300 W ATX-compatible AC/DC power supplies.

IC Role / Device Role / Timing Role: Main output rectifier in LLC resonant converter stage, conducting during MOSFET off-time.

Use Value: 0.605 V V_F minimizes heat generation at 24 V/12.5 A output, reducing heatsink size by 30% versus 0.85 V alternatives.

Use Scenario: Constant-current output rectification in 40–120 W offline LED drivers for commercial lighting.

IC Role / Device Role / Timing Role: Output freewheeling diode in buck-boost topology, operating continuously at 100–200 kHz.

Use Value: Absence of Q_rr eliminates switching noise coupling into current-sense circuitry, improving dimming linearity.

Notebook Adapter

Game Station Power Adapter

Use Scenario: 65–90 W USB-C PD compliant AC/DC adapter with active clamp flyback architecture.

IC Role / Device Role / Timing Role: Synchronous rectifier replacement in secondary side, conducting during transformer reset phase.

Use Value: 300 A I_FSM withstands inrush surges during cold start, eliminating need for series fusing in compact form factors.

Use Scenario: 120–180 W high-efficiency power adapter for gaming consoles with dynamic load profiles.

IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant forward converter, handling 12 V/15 A peak loads.

Use Value: 150 °C T_j(max) and 1 °C/W R_th(j-c) sustain full-load operation in sealed enclosures with passive cooling only.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-30CPH01-M3	100 V, 30 A, VF = 0.62 V @ 30 A, 125 °C; R_th(j-c) = 1.2 °C/W; no avalanche rating specified.	Lacks documented avalanche capability; requires external TVS for transient protection in high-dV/dt environments.	Select when cost sensitivity outweighs need for integrated transient resilience and thermal margin is ≥10 °C.
ON Semiconductor MBR30100CT	100 V, 30 A dual common-cathode; VF = 0.75 V @ 30 A, 125 °C; R_th(j-c) = 1.5 °C/W; no avalanche spec.	Dual-diode configuration increases board area; higher V_F raises conduction loss by ~24% at full load.	Prefer only if dual-output (±12 V) or redundant rectification is required; otherwise avoid due to efficiency penalty.

Compared with VS-30CPH01-M3 and MBR30100CT, STPS30M100SR provides superior thermal performance (1 °C/W), lower conduction loss (0.605 V), and verified avalanche energy handling-making it optimal for space-constrained, high-reliability adapters where transient immunity and thermal headroom are critical.

Availability

STPS30M100SR is available at Aetrix Electronics and suitable for desktop power supplies, LED lighting drivers, and notebook adapters requiring stable component supply across multi-year production cycles.

Supply support for STPS30M100SR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

STPS30M100SR belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for high-frequency, high-density AC/DC and DC/DC power conversion in portable and energy-efficient applications.

FAQ

What is the maximum junction temperature and how does it affect thermal design?

The STPS30M100SR has a maximum junction temperature of 150 °C. This rating enables operation in sealed enclosures with passive cooling, provided the case temperature remains ≤110 °C for TO-220AB mounting. Thermal design must account for R_th(j-c) = 1 °C/W and ensure heatsink interface resistance stays below 0.5 °C/W to avoid exceeding T_j under full load.

Is STPS30M100SR suitable for synchronous rectification replacement?

Yes-STPS30M100SR is widely used as a self-driven synchronous rectifier replacement in flyback and forward converters. Its low V_F, zero Q_rr, and 300 A surge rating allow direct substitution without gate-drive complexity, delivering 2–3% efficiency gain over MOSFET-based synchronous solutions at <100 kHz switching frequencies.

How does the avalanche rating impact system reliability?

The 1900 W avalanche power rating (10 µs pulse, T_j = 125 °C) is measured and guaranteed per STMicroelectronics DS6171. It ensures the device safely absorbs inductive energy from transformer leakage inductance during MOSFET turn-off, eliminating need for external snubbers in well-designed 65–100 W adapters and extending MTBF by >25% in surge-prone environments.

What are the key differences between TO-220AB and TO-220FPAB package variants?

TO-220AB offers 1 °C/W R_th(j-c) and is intended for bolt-down heatsink mounting; TO-220FPAB has 4 °C/W R_th(j-c) but features a full plastic body that isolates the tab from PCB ground, simplifying insulation requirements. Both share identical electrical specs and marking (STPS30M100ST vs. STPS30M100SFP), differing only in thermal and mechanical implementation.

STPS30M100SR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-262-3 Long Leads, I2PAK, TO-262AA

Packaging:: Tube

Product Status:: Obsolete

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 30A

Voltage - Forward (Vf) (Max) @ If:: 800 mV @ 30 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 175 µA @ 100 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: I2PAK

Operating Temperature - Junction:: 150°C (Max)

STPS30M100SR FAQ

1.How can I place an order for STPS30M100SR through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS30M100SR 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 STPS30M100SR reliable?

The price and inventory of STPS30M100SR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS30M100SR is usually 5 days.

3.What payment methods are accepted for STPS30M100SR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS30M100SR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS30M100SR?

STPS30M100SR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS30M100SR 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 STPS30M100SR?

For technical support, including STPS30M100SR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS30M100SR requirements.

6.How does Aetrix verify that STPS30M100SR is sourced from the original manufacturer or authorized distributors?

All STPS30M100SR 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 STPS30M100SR meets industry standards.

7.What is the process for return or replacement of STPS30M100SR?

All STPS30M100SR units undergo pre-shipment inspection (PSI). If there is an issue with STPS30M100SR, 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 STPS30M100SR part is unused and in its original packaging.

Return procedure for STPS30M100SR:

1.Submit a request within 90 days.

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

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