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

STMicroelectronics STPS2H100AF

Name: STPS2H100AF
Brand: STMicroelectronics
SKU: STPS2H100AF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS2H100AF

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-221AC, SMA Flat Leads

Datasheet:: STPS2H100AF.pdf

Description:: DIODE SCHOTTKY 100V 2A SMAFLAT

Quantity:: RFQ Add To RFQ list

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Inventory:7,425

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Product details

Overview

STPS2H100AF from STMicroelectronics is a 100 V, 2 A surface-mount Schottky rectifier in SMA Flat package, optimized for high-frequency DC/DC converters and LED lighting power stages. It delivers low forward voltage drop (0.65 V max at 2 A, 125 °C), negligible switching losses, and avalanche-rated operation up to 173 W peak. Its 175 °C maximum junction temperature enables compact thermal design in telecom adapters and onboard power supplies.

For engineers reviewing the STPS2H100AF datasheet, STPS2H100AF pinout, STPS2H100AF application, or STPS2H100AF equivalent, this device is selected for high-efficiency, low-leakage rectification where thermal robustness and fast recovery are critical - especially in space-constrained, high-temperature environments like LED drivers and telecom DC/DC modules.

Technical Context

This Schottky rectifier uses a planar silicon structure with metal–semiconductor junction to achieve near-zero reverse recovery time and minimal switching loss. Its avalanche capability is specified at 173 W for 10 µs pulses at 125 °C junction temperature, enabling reliable operation under transient overvoltage conditions without external clamping.

The device supports multiple thermal mounting configurations: SMA Flat offers 20 °C/W junction-to-lead thermal resistance, enabling direct PCB copper conduction cooling. Its leakage current remains below 1.00 mA at 125 °C and full 100 V reverse bias - a key advantage over standard PN diodes in high-temperature SMPS designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse voltage; defines safe blocking capability in 48 V telecom and 36 V LED driver bus applications.
I_F(AV)	2 A - Average forward current rating at T_L = 145 °C (SMA Flat); sets continuous power handling limit in DC/DC output stage.
V_F (max)	0.65 V @ 2 A, 125 °C - Low conduction loss ensures >92% efficiency in 12 V → 5 V buck converters at full load.
T_j (max)	175 °C - Enables operation in sealed enclosures or high-ambient environments without derating penalties.
I_R (max)	1.00 mA @ 125 °C, V_RRM - Low leakage preserves standby power budget in battery-backed systems and energy-efficient lighting.
R_th(j-l)	20 °C/W - Junction-to-lead thermal resistance (SMA Flat); allows direct heat transfer to PCB copper, reducing need for heatsinks.
P_ARM	173 W @ 10 µs, T_j = 125 °C - Avalanche energy rating supports surge immunity in unregulated input stages.

Pinout & Package

STPS2H100AF is housed in an SMA Flat package - a lead-free, UL94 V0 epoxy surface-mount case with cathode band marking and optimized thermal pad geometry for conduction cooling. Dimensions: 5.60 mm × 2.95 mm × 1.10 mm (L × W × H), with 2.25 mm lead pitch and 3.95–4.60 mm body width (E1).

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., switch node in synchronous buck); requires low-inductance layout to minimize ringing.
Cathode	Forward current exit / reverse voltage reference	Marked by band; ties to output rail or ground return; must be routed with wide copper pour for thermal dissipation.

Key Features

Feature	Design Value
Negligible switching losses	Zero reverse recovery charge (Q_rr ≈ 0) eliminates turn-off loss and EMI in >100 kHz DC/DC topologies.
High junction temperature capability	175 °C max T_j permits operation in sealed LED drivers without forced air or heatsinks.
Good trade-off between leakage and V_F	0.65 V V_F at 2 A / 125 °C + 1.00 mA I_R at 100 V / 125 °C balances efficiency and standby power.
Avalanche capability specified	173 W peak avalanche power enables self-protecting behavior during line transients in telecom power inputs.
ECOPACK2 compliance	Lead-free, RoHS-compliant, halogen-free packaging meets industrial and lighting environmental requirements.

Applications

LED Lighting Power Supply

Telecom DC/DC Converter

Use Scenario: Constant-current LED driver with offline AC/DC front-end and isolated DC/DC stage.

IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous or flyback-derived DC/DC converter.

Use Value: 0.65 V V_F reduces conduction loss by ~35% vs. standard PN diodes, improving lumen-per-watt efficiency and thermal margin.

Use Scenario: 48 V input to 12 V/3.3 V intermediate bus converter in telecom shelf power system.

IC Role / Device Role / Timing Role: Secondary-side freewheeling rectifier in forward or active-clamp forward topology.

Use Value: 175 °C T_j rating allows full 2 A load at 70 °C ambient without derating - critical for dense telecom board layouts.

Battery Charger Output Stage

Industrial SMPS Auxiliary Rail

Use Scenario: 24 V Li-ion battery charger with multi-stage regulation and isolated feedback.

IC Role / Device Role / Timing Role: Isolated DC/DC output rectifier delivering regulated charging voltage to battery management IC.

Use Value: <1.00 mA reverse leakage at 125 °C prevents parasitic discharge during thermal stress testing and long-term storage.

Use Scenario: Auxiliary 5 V/3.3 V supply for microcontrollers and sensors in programmable logic controllers (PLCs).

IC Role / Device Role / Timing Role: Primary-side or auxiliary winding rectifier in flyback transformer-based auxiliary supply.

Use Value: 20 °C/W R_th(j-l) enables direct thermal coupling to 2.5 cm² copper area - eliminating discrete thermal pads in cost-sensitive industrial designs.

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 MBR2H100F	Same 100 V / 2 A rating, but VF = 0.72 V max @ 2 A / 125 °C; R_th(j-l) = 25 °C/W (SOD-123FL).	Higher conduction loss increases thermal load in LED drivers above 60 °C ambient.	Select when footprint compatibility with SOD-123FL is required and thermal margin exceeds 15 °C.
Vishay VS-2EY100-M3	100 V / 2 A in SMA package; VF = 0.69 V max @ 2 A / 125 °C; no avalanche rating specified.	Lacks documented avalanche capability - requires external TVS for telecom surge protection.	Select for cost-sensitive telecom adapters where transient immunity is managed at system level.

Compared with MBR2H100F and VS-2EY100-M3, STPS2H100AF provides superior thermal performance (20 °C/W), lower VF (0.65 V), and guaranteed avalanche robustness - making it optimal for thermally constrained, high-reliability LED and telecom power stages where component count reduction matters.

Availability

STPS2H100AF is available at Aetrix Electronics and suitable for LED lighting power supplies, telecom DC/DC converters, and industrial SMPS auxiliary rails requiring stable component supply and long-term lifecycle support.

Supply support for STPS2H100AF 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, MCU, and sensor solutions for automotive, industrial, and consumer markets.

ST's power diode product line targets high-efficiency, high-reliability power conversion - with STPS2H100AF specifically engineered for thermally demanding, high-frequency rectification in compact LED drivers and telecom infrastructure.

FAQ

What is the maximum allowable PCB copper area for optimal thermal performance of STPS2H100AF?

The SMA Flat package achieves R_th(j-a) = 40 °C/W with 2.5 cm² of 35 µm copper per lead on FR4 board. Increasing copper area beyond 2.5 cm² yields diminishing returns; recommended layout uses ≥3.12 mm × 5.52 mm thermal pad per lead with solder mask defined openings for maximum conduction.

Does STPS2H100AF require a heatsink in a 2 A, 100 kHz DC/DC application at 60 °C ambient?

No heatsink is required. With 2.5 cm² copper per lead and δ = 0.5 duty cycle, the device maintains T_j < 135 °C at 2 A - well below its 175 °C limit. Thermal simulation using P = 0.56 × I_F(AV) + 0.045 × I_F(RMS)² confirms <1.1 W total loss at full load.

How does the avalanche rating of STPS2H100AF compare to standard Schottky diodes?

Most Schottky diodes lack rated avalanche capability. STPS2H100AF is tested to 173 W peak power for 10 µs pulses at 125 °C junction temperature - enabling direct use in unclamped flyback or forward converters where voltage spikes exceed V_RRM during MOSFET turn-off.

Can STPS2H100AF replace STPS2H100U in SMB package without layout changes?

No. STPS2H100AF (SMA Flat) has different footprint dimensions (5.60 mm × 2.95 mm) versus STPS2H100U (SMB: 5.60 mm × 3.95 mm). Pad width, length, and lead spacing differ; redesign of solder mask and copper pour is required to maintain thermal and mechanical reliability.

STPS2H100AF Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-221AC, SMA 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:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SMAflat

Operating Temperature - Junction:: -65°C ~ 175°C

STPS2H100AF FAQ

1.How can I place an order for STPS2H100AF through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS2H100AF 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 STPS2H100AF reliable?

The price and inventory of STPS2H100AF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS2H100AF is usually 5 days.

3.What payment methods are accepted for STPS2H100AF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS2H100AF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS2H100AF?

STPS2H100AF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS2H100AF 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 STPS2H100AF?

For technical support, including STPS2H100AF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS2H100AF requirements.

6.How does Aetrix verify that STPS2H100AF is sourced from the original manufacturer or authorized distributors?

All STPS2H100AF 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 STPS2H100AF meets industry standards.

7.What is the process for return or replacement of STPS2H100AF?

All STPS2H100AF units undergo pre-shipment inspection (PSI). If there is an issue with STPS2H100AF, 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 STPS2H100AF part is unused and in its original packaging.

Return procedure for STPS2H100AF:

1.Submit a request within 90 days.

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

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