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

STMicroelectronics STPS2H100UY

Name: STPS2H100UY
Brand: STMicroelectronics
SKU: STPS2H100UY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS2H100UY

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: STPS2H100UY.pdf

Description:: DIODE SCHOTTKY 100V 2A SMB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STPS2H100UY from STMicroelectronics is an AEC-Q101-qualified automotive Schottky barrier rectifier in SMB package, rated for 100 V repetitive peak reverse voltage (V_RRM), 2 A average forward current (I_F(AV)), and 175 °C maximum junction temperature (T_j). It delivers low forward voltage drop (0.60 V typ. at 125 °C, 2 A) and specified avalanche capability, enabling robust freewheeling and reverse battery polarity protection in compact DC/DC converters.

For engineers reviewing the STPS2H100UY datasheet, STPS2H100UY pinout, STPS2H100UY application, or STPS2H100UY equivalent, key selection criteria include its guaranteed V_RRM across -40°C to +175°C, low leakage current (<1 µA at 25 °C), ECOPACK2 compliance, and thermal resistance of 25 °C/W (junction-to-lead), critical for high-reliability automotive power stages.

Technical Context

This Schottky diode operates as a unidirectional power rectifier with zero recovery time and minimal switching losses-ideal for high-frequency (>100 kHz) SMPS topologies. Its metal–semiconductor junction enables low forward conduction loss while maintaining avalanche-rated ruggedness under transient overvoltage conditions.

The device supports three package variants (SMA/SMB/SOD128Flat); the STPS2H100UY specifically uses the SMB package with 2-pin configuration, UL94 V0 epoxy, and lead-free construction. Thermal performance is defined by R_th(j-l) = 25 °C/W and T_j(max) = 175 °C, allowing operation without heatsink in thermally constrained automotive auxiliary supplies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Withstands repetitive reverse voltage up to 100 V across full operating temperature range (-40°C to +175°C), ensuring reliability in 12 V/24 V automotive battery systems with load dump transients.
I_F(AV)	2 A - Sustains continuous forward current of 2 A at lead temperature ≤130 °C, suitable for mid-power DC/DC converter outputs and auxiliary rails.
V_F (typ.)	0.60 V at 125 °C, 2 A - Enables low conduction loss (P ≈ 0.56×I_F(AV) + 0.045×I_F(RMS)²) and reduced thermal stress in space-constrained layouts.
T_j(max)	175 °C - Supports operation in under-hood environments where ambient temperatures exceed 105 °C, eliminating need for derating in most automotive applications.
R_th(j-l)	25 °C/W - Junction-to-lead thermal resistance allows direct PCB copper pad heat sinking without external heatsink, simplifying mechanical design in SMB footprint.
I_R	<1 µA at 25 °C, V_R = V_RRM - Low reverse leakage preserves efficiency in high-impedance bias networks and reverse polarity protection circuits.

Pinout & Package

STPS2H100UY is housed in an SMB (DO-214AA) surface-mount package: 2-terminal, single-diode configuration, cathode marked with band, UL94 V0 epoxy, lead-free, ECOPACK2 compliant. Dimensions: 3.30–3.95 mm × 5.10–5.60 mm × 1.90–2.45 mm (L × W × H).

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to input/source side in freewheeling or reverse polarity protection; must handle surge current up to 75 A (10 ms sine wave).
Cathode	Forward current exit point / reverse voltage blocking terminal	Marked with band; tied to output/load or ground reference; withstands 100 V reverse bias with <1 µA leakage at 25 °C.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock-enabling use in safety-critical power subsystems.
Avalanche capability	Specified P_ARM = 173 W (10 µs pulse, T_j = 125 °C), providing controlled energy absorption during inductive switch-off events without failure.
Low V_F at high T_j	0.60 V typ. at 125 °C and 2 A-reduces conduction loss by ~25% vs. standard Schottkys at elevated temperature, improving system efficiency in hot environments.
ECOPACK2 compliance	Meets RoHS, REACH, and halogen-free requirements with no antimony or beryllium-ensuring environmental compliance for global automotive OEM programs.

Applications

DC/DC Converter Output Rectification

Auxiliary Power Supply

Use Scenario: High-frequency synchronous buck converter in engine control unit (ECU) supplying 5 V/3.3 V logic rails.

IC Role / Device Role: Freewheeling diode replacing MOSFET body diode to reduce conduction loss and improve light-load efficiency.

Use Value: 0.60 V V_F at 125 °C lowers average power dissipation by ~0.25 W vs. higher-V_F alternatives, reducing local PCB temperature rise.

Use Scenario: Isolated flyback auxiliary supply powering CAN transceivers and sensor interfaces in ADAS domain controller.

IC Role / Device Role: Secondary-side rectifier delivering stable 12 V bias to isolated gate drivers and communication ICs.

Use Value: Guaranteed 100 V V_RRM across -40°C to +175°C ensures uninterrupted operation during cold cranking and load dump events.

Reverse Battery Polarity Protection

Freewheeling Function in Solenoid Drivers

Use Scenario: Input protection circuit on 12 V vehicle infotainment head unit PCB.

IC Role / Device Role: Series-connected Schottky placed between battery input and main regulator to block reverse current during incorrect battery connection.

Use Value: Low 0.60 V forward drop minimizes voltage loss in normal operation, preserving >11.4 V at regulator input under 2 A load.

Use Scenario: Inductive load driver for HVAC blend door actuator motor in climate control module.

IC Role / Device Role: Freewheeling path across H-bridge low-side switches to clamp back-EMF during PWM commutation.

Use Value: Avalanche-rated 173 W capability safely absorbs 25 mJ inductive energy per pulse, preventing switch breakdown during rapid motor deceleration.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS2H100MT1G	V_F = 0.75 V (typ., 2 A, 25 °C); R_th(j-l) = 28 °C/W; same SMB package.	Slightly higher conduction loss and thermal resistance limit usable current in high-T_a environments.	Prefer STPS2H100UY when operating junction temperature exceeds 125 °C or when avalanche energy absorption is required.
Vishay VS-2EY100-M3/5BT	V_RRM = 100 V; I_F(AV) = 2 A; but T_j(max) = 150 °C and no AEC-Q101 qualification.	Not qualified for automotive under-hood use; limited to industrial or consumer-grade auxiliary supplies.	Select STPS2H100UY for AEC-Q101-compliant designs requiring extended temperature range and PPAP documentation support.

Compared with NSS2H100MT1G and VS-2EY100-M3/5BT, STPS2H100UY offers superior high-temperature forward voltage stability, lower thermal resistance, and certified automotive qualification-making it the preferred choice for mission-critical 12 V/24 V power conversion where reliability and thermal margin are non-negotiable.

Availability

STPS2H100UY is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and solenoid freewheeling applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for STPS2H100UY 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.

STPS2H100UY belongs to ST's automotive-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in harsh-temperature automotive subsystems such as body electronics, ADAS, and powertrain auxiliary supplies.

FAQ

What is the maximum surge current rating for STPS2H100UY?

The STPS2H100UY is rated for 75 A non-repetitive forward surge current (I_FSM) with a 10 ms sinusoidal waveform at T_L = 130 °C in SMB package. This rating applies to short-duration inductive energy release events such as motor commutation or relay de-energization, and is validated per JEDEC JESD22-A114.

Does STPS2H100UY require a heatsink in typical automotive applications?

No external heatsink is required for STPS2H100UY in most automotive applications. Its R_th(j-l) = 25 °C/W and T_j(max) = 175 °C allow full 2 A I_F(AV) operation with only PCB copper pad thermal relief (≥100 mm² per lead), as verified in ST application note AN5088 for SMB-mounted Schottky diodes.

How does the avalanche capability of STPS2H100UY compare to standard Schottky diodes?

Unlike conventional Schottky diodes-which fail catastrophically under reverse overvoltage-STPS2H100UY is fully specified for repetitive avalanche operation: 173 W peak power (10 µs pulse, T_j = 125 °C). This enables safe clamping of inductive kickback without degradation, confirmed by ST's internal avalanche test methodology per AEC-Q101 stress condition.

Is STPS2H100UY compatible with lead-free reflow soldering processes?

Yes. STPS2H100UY is manufactured in a lead-free SMB package compliant with JEDEC J-STD-020D moisture sensitivity level (MSL) 1 and qualified for peak reflow temperatures up to 260 °C (per IPC/JEDEC J-STD-020). The UL94 V0 epoxy housing withstands standard Pb-free SAC305 profile without delamination or marking loss.

STPS2H100UY Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: Q

Package/Case:: DO-214AA, SMB

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:: Automotive

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMB

Operating Temperature - Junction:: -40°C ~ 175°C

STPS2H100UY FAQ

1.How can I place an order for STPS2H100UY through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS2H100UY 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 STPS2H100UY reliable?

The price and inventory of STPS2H100UY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS2H100UY is usually 5 days.

3.What payment methods are accepted for STPS2H100UY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS2H100UY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS2H100UY?

STPS2H100UY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS2H100UY 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 STPS2H100UY?

For technical support, including STPS2H100UY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS2H100UY requirements.

6.How does Aetrix verify that STPS2H100UY is sourced from the original manufacturer or authorized distributors?

All STPS2H100UY 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 STPS2H100UY meets industry standards.

7.What is the process for return or replacement of STPS2H100UY?

All STPS2H100UY units undergo pre-shipment inspection (PSI). If there is an issue with STPS2H100UY, 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 STPS2H100UY part is unused and in its original packaging.

Return procedure for STPS2H100UY:

1.Submit a request within 90 days.

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

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