Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics STPS2H100UF

Name: STPS2H100UF
Brand: STMicroelectronics
SKU: STPS2H100UF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: STPS2H100UF

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-221AA, SMB Flat Leads

Datasheet:: STPS2H100UF.pdf

Description:: DIODE SCHOTTKY 100V 2A SMBFLAT

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,759

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

STPS2H100UF from STMicroelectronics is a 100 V, 2 A surface-mount Schottky rectifier in SMB Flat package, optimized for high-frequency DC/DC converters and telecom power supplies. It delivers low forward voltage drop (0.65 V max at 125 °C, 2 A), negligible switching losses, and avalanche-rated operation up to 173 W (10 µs pulse). Its 175 °C maximum junction temperature and 15 °C/W junction-to-lead thermal resistance support compact, thermally constrained designs.

For engineers reviewing the STPS2H100UF datasheet, STPS2H100UF pinout, STPS2H100UF application, or STPS2H100UF equivalent, key selection criteria include forward voltage vs. temperature behavior, reverse leakage current at 125 °C (≤1 mA), avalanche energy rating, thermal resistance under real PCB copper area, and compatibility with SMB Flat footprint and reflow profiles.

Technical Context

This Schottky rectifier uses a planar silicon structure with metal-semiconductor junction optimized for fast recovery and minimal reverse recovery charge. Its low VF–IR trade-off enables high efficiency in continuous conduction mode (CCM) and discontinuous conduction mode (DCM) topologies, especially where thermal headroom is limited.

The device is rated for repetitive peak reverse voltage of 100 V and surge forward current of 75 A (10 ms sine half-wave). Its avalanche capability-specified at 173 W for 10 µs pulses at Tj = 125 °C-provides robustness against transient overvoltage events without external clamping.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	100 V - Maximum reverse blocking voltage; defines usable input range in 48 V telecom or 24 V industrial DC/DC inputs.
IF(AV)	2 A - Average forward current at specified thermal conditions; supports sustained output currents in compact adapters.
VF (max)	0.65 V @ 125 °C, 2 A - Low conduction loss directly reduces power dissipation and improves system efficiency above 85%.
IR (max)	1.00 mA @ 125 °C, VR = 100 V - Low leakage preserves standby power budget in always-on telecom modules.
Rth(j-l)	15 °C/W - Junction-to-lead thermal resistance for SMB Flat package; enables direct heat transfer to PCB copper pour.
Tj (max)	175 °C - Maximum operating junction temperature; allows operation in sealed enclosures or high ambient environments.
PARM	173 W @ 10 µs, Tj = 125 °C - Avalanche power rating; provides defined ruggedness against inductive kickback or line transients.

Pinout & Package

SMB Flat is a surface-mount, flat-lead plastic package with cathode band marking, UL94 V0 epoxy, and lead-free finish. It features enhanced thermal performance via low-profile leads and optimized copper pad coupling.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to input rail or switch node; requires low-inductance layout to minimize ringing during turn-off.
Cathode	Forward current exit / output connection	Connected to output capacitor and load; marked by band; serves as primary heat path to PCB copper.

Key Features

Feature	Design Value
Negligible switching losses	No reverse recovery charge (Qrr ≈ 0), eliminating switching loss component in high-frequency (>300 kHz) SMPS designs.
High junction temperature capability	Rated up to 175 °C junction, enabling use in thermally dense telecom modules without derating below 2 A.
Good VF–IR trade-off	0.65 V VF max at 125 °C and ≤1 mA IR at same condition-balances efficiency and standby leakage better than generic Schottkys.
Avalanche capability specified	173 W repetitive avalanche power (10 µs) ensures reliable operation during MOSFET turn-off overshoot in synchronous buck stages.
ECOPACK2 compliance	Meets RoHS, halogen-free, and REACH requirements; qualified for industrial and telecom equipment with long lifecycle expectations.

Applications

Telecom Power Supply

LED Driver Secondary Side

Use Scenario: 48 V input DC/DC converter supplying 12 V/2 A to base station control logic.

IC Role / Device Role / Timing Role: Output rectifier in synchronous buck topology, conducting during low-side FET off-time.

Use Value: 0.65 V VF at 125 °C reduces conduction loss by ~150 mW vs. standard 0.8 V Schottky, lowering thermal stress on 2-layer PCB.

Use Scenario: Secondary-side rectification in isolated flyback LED driver for street lighting.

IC Role / Device Role / Timing Role: Freewheeling diode conducting during transformer reset phase.

Use Value: 1 mA max IR at 125 °C prevents >20 mW standby loss in always-on outdoor fixtures, meeting IEC 62384 standby limits.

Industrial DC/DC Module

USB-C PD Adapter Output Stage

Use Scenario: 24 V input, 5 V/2 A isolated DC/DC module for PLC I/O cards.

IC Role / Device Role / Timing Role: Synchronous rectifier replacement in secondary-side synchronous rectification circuit.

Use Value: 15 °C/W Rth(j-l) enables direct thermal coupling to 2.5 cm² copper pour, maintaining Tj < 135 °C at full load without heatsink.

Use Scenario: Output rectifier in 65 W USB-C PD adapter using active clamp flyback.

IC Role / Device Role / Timing Role: High-efficiency freewheeling path during transformer demagnetization.

Use Value: Avalanche rating absorbs 10 µs spikes from clamp circuit oscillation, eliminating need for TVS and reducing BOM count.

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-2EY10-M3	Same 100 V/2 A rating, but SMB package (not Flat); Rth(j-l) = 25 °C/W vs. 15 °C/W.	Larger thermal resistance requires larger copper area or lower ambient to achieve same Tj.	Prefer when existing SMB footprint is fixed and thermal margin exists.
ON Semiconductor MBR2100T3G	100 V/2 A, DO-214AA (SMB) package; VF = 0.82 V max @ 25 °C, 2 A - higher conduction loss.	Higher VF increases conduction loss by ~340 mW at full load, requiring additional thermal management.	Acceptable only if cost sensitivity outweighs efficiency and thermal constraints.

Compared with VS-2EY10-M3 and MBR2100T3G, STPS2H100UF offers superior thermal performance (15 °C/W) and lower VF at elevated temperature-critical for high-density, high-ambient telecom and industrial power modules where thermal headroom is constrained.

Availability

STPS2H100UF is available at Aetrix Electronics and suitable for telecom power supplies, LED lighting drivers, and industrial DC/DC converters requiring stable component supply and long-term lifecycle assurance.

Supply support for STPS2H100UF 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, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

STPS2H100UF belongs to ST's high-reliability Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency power conversion in space-constrained telecom and industrial applications.

FAQ

What is the cathode marking convention for STPS2H100UF?

The cathode is marked by a visible band on the SMB Flat package body, aligned with the shorter lead side. This matches standard SMB Flat polarity orientation and corresponds to Pin 2 in JEDEC MO-213AB outline drawings. The band must be oriented toward the positive output node in PCB layout.

Does STPS2H100UF require derating at elevated ambient temperatures?

Yes-derating is required per Figure 3 in DS1452. At 75 °C ambient with δ = 0.5 duty cycle, IF(AV) drops to ~1.6 A for SMB Flat on 2.5 cm² copper. Full 2 A rating assumes Tl = 150 °C, achievable only with adequate PCB copper area and airflow.

Can STPS2H100UF replace a standard 1N5822 in an existing design?

No-1N5822 is DO-201AD (axial lead) with VF ≈ 0.9 V and no avalanche rating. STPS2H100UF has different package, thermal path, and electrical profile. Direct replacement requires PCB footprint change, thermal validation, and verification of avalanche robustness in the target circuit.

Is STPS2H100UF suitable for synchronous rectification circuits?

It is not a synchronous rectifier IC-it is a passive Schottky diode. However, it serves as the freewheeling element in synchronous buck or flyback topologies where a controller drives an external MOSFET. Its low VF and fast switching make it ideal for such roles when gate drive complexity or cost precludes active rectification.

STPS2H100UF Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-221AA, SMB Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

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

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 790 mV @ 2 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 1 µA @ 100 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMBflat

Operating Temperature - Junction:: 175°C (Max)

STPS2H100UF FAQ

1.How can I place an order for STPS2H100UF through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS2H100UF 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 STPS2H100UF reliable?

The price and inventory of STPS2H100UF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS2H100UF is usually 5 days.

3.What payment methods are accepted for STPS2H100UF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS2H100UF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS2H100UF?

STPS2H100UF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS2H100UF 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 STPS2H100UF?

For technical support, including STPS2H100UF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS2H100UF requirements.

6.How does Aetrix verify that STPS2H100UF is sourced from the original manufacturer or authorized distributors?

All STPS2H100UF 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 STPS2H100UF meets industry standards.

7.What is the process for return or replacement of STPS2H100UF?

All STPS2H100UF units undergo pre-shipment inspection (PSI). If there is an issue with STPS2H100UF, 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 STPS2H100UF part is unused and in its original packaging.

Return procedure for STPS2H100UF:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…