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

STMicroelectronics STPS2L30A

Name: STPS2L30A
Brand: STMicroelectronics
SKU: STPS2L30A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS2L30A

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: STPS2L30A.pdf

Description:: DIODE SCHOTTKY 30V 2A SMA

Quantity:: RFQ Add To RFQ list

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Inventory:6,813

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Product details

Overview

STPS2L30A from STMicroelectronics is a 30 V, 2 A low-drop Schottky rectifier in SMA package, optimized for high-frequency DC/DC converters and synchronous rectification with MOSFETs. It features a typical forward voltage of 0.325 V at 125 °C and 2 A, avalanche-rated operation, and ECOPACK2 compliance for environmental safety.

For engineers reviewing the STPS2L30A datasheet, STPS2L30A pinout, STPS2L30A application, or STPS2L30A equivalent, this device is selected for compact power conversion where conduction loss minimization, thermal robustness up to 150 °C junction temperature, and surface-mount reliability are critical in battery-powered and telecom-grade supplies.

Technical Context

This Schottky rectifier uses a single-chip silicon structure with metal-semiconductor junction design to achieve low VF and fast switching-no minority-carrier storage delay. Its conduction/reverse loss trade-off is tuned for peak efficiency in δ = 0.5 square-wave operation at frequencies above 100 kHz.

Thermal performance is defined by junction-to-lead resistance (R_th(j-l) = 30 °C/W for SMA), enabling direct thermal coupling to PCB copper. Avalanche rating (108 W, 10 µs pulse) supports transient energy absorption without failure in unregulated or flyback topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	30 V - Maximum reverse blocking voltage; defines safe operating range in 24 V input DC/DC stages.
I_F(AV)	2 A - Average forward current at T_L = 120 °C (SMA); sets continuous output capability in compact adapters.
V_F(typ.)	0.325 V @ 2 A, 125 °C - Low conduction loss directly reduces power dissipation and improves system efficiency.
T_j(max)	+150 °C - Maximum junction temperature; enables operation in thermally constrained enclosures without derating.
R_th(j-l)	30 °C/W - Junction-to-lead thermal resistance; determines PCB copper area needed for thermal management.
I_R	6 mA @ 100 °C, V_R = 30 V - Reverse leakage level affecting standby loss in battery-backed systems.
P_ARM	108 W @ 10 µs - Repetitive avalanche power rating; allows safe clamping of inductive switch-off transients.

Pinout & Package

STPS2L30A is housed in an SMA (DO-214AC) surface-mount package with two terminals: anode and cathode. The cathode is marked by a band on the body. Thermal path is optimized through the leads to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., switch node in synchronous buck); must be routed with low-inductance trace.
Cathode	Forward current exit / reverse-blocking terminal	Marked with band; connects to output rail; serves as reference for voltage sensing and thermal pad attachment.

Key Features

Feature	Design Value
Low forward voltage drop	0.325 V typ. @ 125 °C/2 A - Reduces conduction loss by >30% vs. standard Schottkys in same package.
Avalanche-rated operation	108 W repetitive avalanche power - Enables reliable use in non-clamped topologies without external snubbers.
ECOPACK2 compliance	Lead-free, halogen-free, RoHS-compliant packaging - Meets global environmental regulations without performance compromise.
Optimized thermal resistance	R_th(j-l) = 30 °C/W (SMA) - Allows direct thermal coupling to 1–2 cm² copper pour for passive cooling in space-constrained designs.

Applications

Cordless Appliance Power Supply

SSD Power Rail Rectification

Use Scenario: On-board 12 V to 5 V/3.3 V DC/DC converter in cordless vacuum or power tool battery packs.

IC Role / Device Role / Timing Role: Synchronous rectifier diode replacing MOSFET body diode to reduce conduction loss during freewheeling phase.

Use Value: Cuts rectifier loss by ~0.3 W at 2 A, extending runtime and reducing thermal stress on PCB.

Use Scenario: 5 V auxiliary rail generation in M.2 NVMe SSD modules with tight height constraints.

IC Role / Device Role / Timing Role: Output rectifier in miniature isolated flyback or buck-derived supply feeding controller and NAND flash.

Use Value: SMA footprint fits under PCIe connector; 0.325 V V_F maintains <1% output regulation error at full load.

Battery Charger Secondary Side

Telecom DC/DC Module

Use Scenario: Secondary-side rectification in 19 V/2.5 A USB-C PD charger with GaN primary-side switching.

IC Role / Device Role / Timing Role: High-efficiency Schottky rectifier paralleled with synchronous MOSFET in active clamp forward topology.

Use Value: Avalanche rating absorbs leakage inductance spikes; 150 °C T_j(max) supports sealed enclosure operation.

Use Scenario: 48 V to 12 V intermediate bus converter in telecom base station power shelf.

IC Role / Device Role / Timing Role: Freewheeling diode in interleaved buck stage operating at 300 kHz with 50% duty cycle.

Use Value: Low R_th(j-l) enables stable 2 A output without heatsink; 30 V V_RRM provides 2× margin over 12 V rail.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MBR230LSFT1G	V_F = 0.45 V @ 2 A, 25 °C; R_th(j-l) = 40 °C/W; no avalanche rating	Lower cost but higher conduction loss and no transient energy handling	Preferred only in cost-sensitive, low-temperature ambient consumer adapters.
SS23	V_RRM = 30 V, I_F(AV) = 2 A, but V_F = 0.51 V @ 125 °C; SMB package; R_th(j-l) = 15 °C/W	Better thermal performance but higher forward drop increases loss in high-duty-cycle apps	Suitable when board layout favors SMB footprint and thermal pad area exceeds 3 cm².

Compared with MBR230LSFT1G and SS23, STPS2L30A uniquely balances ultra-low V_F, avalanche ruggedness, and SMA thermal interface-making it optimal for thermally dense, high-reliability DC/DC stages where both efficiency and transient immunity matter.

Availability

STPS2L30A is available at Aetrix Electronics and suitable for cordless appliance power supplies, SSD auxiliary rails, and telecom DC/DC converters requiring stable component supply across production lifecycles.

Supply support for STPS2L30A 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 analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

STPS2L30A belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for miniaturized, high-frequency switched-mode power supplies where thermal density and conduction loss dominate system-level efficiency.

FAQ

What is the maximum allowable PCB copper area for thermal management of STPS2L30A in SMA package?

For optimal thermal performance, ST recommends ≥1.4 cm² of 35 µm copper per lead on FR4 PCB, based on Figure 13 in DS1526. With 1.4 cm², R_th(j-a) drops to ~120 °C/W, enabling full 2 A current at 50 °C ambient without forced air. Larger copper areas yield diminishing returns beyond 2.5 cm².

Can STPS2L30A replace a standard PN junction rectifier in a 24 V input buck converter?

Yes-STPS2L30A replaces PN rectifiers like 1N5822 in 24 V input buck converters, delivering ~0.25 V lower forward drop at 2 A. This reduces conduction loss by ~0.5 W and eliminates reverse recovery charge, eliminating EMI from tail current and improving light-load efficiency.

Is STPS2L30A suitable for synchronous rectification with a 100 kHz gate driver?

Yes-its zero reverse recovery time and fast turn-off make it ideal for synchronous rectification at 100 kHz. When paralleled with a MOSFET, it handles reverse-biased dead-time current without shoot-through risk, and its 0.325 V V_F ensures minimal voltage mismatch during transition.

Does STPS2L30A require a heatsink in a sealed 75 °C ambient environment?

No heatsink is required if PCB copper area meets ST's recommended footprint (Figure 17) and airflow is absent. At 75 °C ambient and 2 A load, junction temperature reaches ~135 °C-within the 150 °C limit-provided R_th(j-a) ≤ 120 °C/W via adequate copper pour and thermal vias under leads.

STPS2L30A Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 30 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 450 mV @ 2 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 200 µA @ 30 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMA

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

STPS2L30A FAQ

1.How can I place an order for STPS2L30A through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS2L30A 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 STPS2L30A reliable?

The price and inventory of STPS2L30A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS2L30A is usually 5 days.

3.What payment methods are accepted for STPS2L30A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS2L30A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS2L30A?

STPS2L30A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS2L30A 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 STPS2L30A?

For technical support, including STPS2L30A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS2L30A requirements.

6.How does Aetrix verify that STPS2L30A is sourced from the original manufacturer or authorized distributors?

All STPS2L30A 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 STPS2L30A meets industry standards.

7.What is the process for return or replacement of STPS2L30A?

All STPS2L30A units undergo pre-shipment inspection (PSI). If there is an issue with STPS2L30A, 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 STPS2L30A part is unused and in its original packaging.

Return procedure for STPS2L30A:

1.Submit a request within 90 days.

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

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