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

STMicroelectronics STPS5H100B

Name: STPS5H100B
Brand: STMicroelectronics
SKU: STPS5H100B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS5H100B

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: STPS5H100B.pdf

Description:: DIODE SCHOTTKY 100V 5A DPAK

Quantity:: RFQ Add To RFQ list

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Inventory:8,011

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Product details

Overview

STPS5H100B from STMicroelectronics is a high-voltage Schottky barrier rectifier in DPAK package, rated for 100 V repetitive peak reverse voltage (V_RRM), 5 A average forward current (I_F(AV)), and 175 °C maximum junction temperature (T_j(max)). It delivers low forward voltage drop (0.57 V typ. at 5 A, 125 °C) with negligible switching losses, enabling high-efficiency operation in compact SMPS adapters and on-board DC-DC converters.

For engineers reviewing the STPS5H100B datasheet, STPS5H100B pinout, STPS5H100B application, or STPS5H100B equivalent, key selection criteria include its 2.5 °C/W junction-to-case thermal resistance, avalanche-rated 515 W peak power capability, and ECOPACK®-compliant DPAK packaging optimized for conduction-cooled PCB layouts.

Technical Context

This device employs a planar Schottky barrier structure to achieve fast recovery (no minority-carrier storage) and low forward conduction loss while maintaining controlled leakage across temperature. Its 100 V V_RRM rating targets secondary-side rectification in universal-input AC-DC adapters and isolated 48 V/12 V DC-DC modules.

The DPAK package enables direct thermal coupling to copper pour via the exposed cathode tab, supporting continuous 5 A operation at T_C = 165 °C. Avalanche energy handling (515 W, 10 µs pulse) provides robustness against transient overvoltage events in unclamped flyback or forward converter topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Supports rectification in 48 V output DC-DC converters with ≥2× safety margin against reflected transients
I_F(AV)	5 A - Sustains continuous output current in 60 W adapter designs with δ = 0.5 square-wave duty cycle
V_F(typ.)	0.57 V @ 5 A, 125 °C - Reduces conduction loss to ~2.85 W, minimizing heatsink requirements
R_th(j-c)	2.5 °C/W - Enables direct thermal path to PCB copper, allowing >4 W dissipation before reaching 175 °C junction limit
I_FSM	75 A @ 10 ms sinusoidal - Withstands inrush currents during cold-start of 60 W SMPS without degradation
T_j(max)	175 °C - Permits operation in high-ambient industrial or enclosed adapter environments without derating
P_ARM	515 W @ 10 µs, T_j = 125 °C - Absorbs single-event avalanche energy in unclamped inductive switching

Pinout & Package

DPAK package (TO-252) with three terminals: anode (A), cathode (K), and non-connected (NC) thermal pad. The exposed cathode tab serves as both electrical cathode and primary thermal interface to PCB copper pour.

Pin/Terminal	Circuit Role	Design Meaning
A	Anode	Input terminal for forward current flow; connects to transformer secondary or switch node
K	Cathode	Output terminal and thermal interface; soldered directly to large copper area for heat extraction
NC	Non-connected thermal pad	Electrically isolated metal pad beneath package body; improves mechanical stability but not used electrically

Key Features

Feature	Design Value
Negligible switching losses	Zero reverse recovery charge (Q_rr ≈ 0) eliminates turn-off loss and EMI in high-frequency SMPS (>100 kHz)
High junction temperature capability	175 °C max operating temperature allows full 5 A current rating at case temperatures up to 165 °C
Low leakage current	≤4.5 mA at 125 °C and full 100 V reverse bias - minimizes standby power loss in no-load adapter modes
Avalanche specification	515 W peak avalanche power (10 µs) - protects against voltage spikes during MOSFET turn-off in flyback converters
ECOPACK® compliance	Halogen-free, RoHS-compliant epoxy meets UL94 V0 flammability rating for safety-critical power supplies

Applications

AC-DC Adapter Rectification

Isolated DC-DC Converter Output

Use Scenario: Secondary-side rectification in 48 V input / 12 V output 60 W flyback adapter with universal AC input.

IC Role / Device Role / Timing Role: High-efficiency synchronous rectifier replacement; conducts during transformer demagnetization phase.

Use Value: 0.57 V forward drop at 125 °C reduces conduction loss by 35% vs. standard silicon diode, improving full-load efficiency to >88%.

Use Scenario: Output rectification in 48 V to 5 V isolated buck-derived DC-DC module for telecom baseband cards.

IC Role / Device Role / Timing Role: Uncontrolled rectifier in center-tapped forward topology; handles 5 A continuous output current.

Use Value: 2.5 °C/W R_th(j-c) enables thermal management using only 2 oz copper on inner layers-no external heatsink required.

Industrial Power Supply Auxiliary Rail

LED Driver Secondary Rectification

Use Scenario: +15 V auxiliary supply rectification in 3 kW industrial PLC power system with wide ambient range (-40 to +70 °C).

IC Role / Device Role / Timing Role: Main output rectifier feeding linear regulator for analog sensor biasing.

Use Value: 175 °C T_j(max) ensures reliable operation at 70 °C ambient with 15 K thermal rise, eliminating derating concerns.

Use Scenario: Output rectification in constant-current LED driver for street lighting (100–240 V AC input, 36 V/700 mA output).

IC Role / Device Role / Timing Role: Low-loss rectifier in quasi-resonant flyback stage powering 12-series LED string.

Use Value: ≤4.5 mA reverse leakage at 125 °C prevents >100 mW standby loss, meeting IEC 62301 Class C requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-5EY100-M3	Same 100 V V_RRM, 5 A I_F(AV), but higher V_F (0.82 V typ. @ 5 A, 25 °C); R_th(j-c) = 3.0 °C/W	Limited to lower-frequency (<65 kHz) designs due to higher conduction loss and reduced thermal performance	Prefer when cost sensitivity outweighs efficiency targets and board space permits larger thermal pad
ON Semiconductor SB5100	100 V V_RRM, 5 A I_F(AV), but no avalanche rating; V_F = 0.85 V typ. @ 5 A, 25 °C; T_j(max) = 150 °C	Not suitable for unclamped topologies or high-ambient industrial use; requires additional clamping circuitry	Select only for cost-driven consumer adapters with tight BOM constraints and active voltage clamping

Compared with VS-5EY100-M3 and SB5100, STPS5H100B offers superior thermal performance (2.5 vs. ≥3.0 °C/W), lower forward voltage at elevated temperature, and guaranteed avalanche ruggedness-critical for reliability in unclamped flyback and high-temperature deployments.

Availability

STPS5H100B is available at Aetrix Electronics and suitable for AC-DC adapters, isolated DC-DC converters, and industrial auxiliary power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STPS5H100B 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.

STPS5H100B belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency SMPS where low forward voltage, thermal robustness, and avalanche tolerance are critical.

FAQ

What is the maximum allowable case temperature for continuous 5 A operation?

The datasheet specifies I_F(AV) = 5 A at T_C = 165 °C with δ = 0.5 square wave. This means the device can sustain 5 A continuously if the case (tab) temperature remains at or below 165 °C, verified under defined thermal test conditions with adequate PCB copper area.

Does STPS5H100B require a heatsink in typical adapter applications?

No external heatsink is required. With its 2.5 °C/W R_th(j-c) and DPAK's exposed cathode tab, thermal management is achieved via direct soldering to ≥4 cm² of 2 oz copper on the PCB layer beneath the device, sufficient for 5 A operation at 165 °C case temperature.

How does the avalanche rating impact circuit design?

The 515 W peak avalanche power rating (10 µs, T_j = 125 °C) allows the device to safely absorb inductive energy during MOSFET turn-off in unclamped flyback converters, eliminating need for external snubbers in many designs and improving overall system reliability.

Is STPS5H100B compatible with lead-free reflow processes?

Yes. STPS5H100B is qualified for standard Pb-free reflow profiles per JEDEC J-STD-020, with peak temperature up to 260 °C. Its ECOPACK®-compliant epoxy meets halogen-free and RoHS requirements, ensuring compatibility with modern assembly lines.

STPS5H100B Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tube

Product Status:: Obsolete

Technology:: Schottky

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

Current - Average Rectified (Io):: 5A

Voltage - Forward (Vf) (Max) @ If:: 730 mV @ 5 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 3.5 µA @ 100 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

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

STPS5H100B FAQ

1.How can I place an order for STPS5H100B through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS5H100B 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 STPS5H100B reliable?

The price and inventory of STPS5H100B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS5H100B is usually 5 days.

3.What payment methods are accepted for STPS5H100B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS5H100B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS5H100B?

STPS5H100B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS5H100B 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 STPS5H100B?

For technical support, including STPS5H100B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS5H100B requirements.

6.How does Aetrix verify that STPS5H100B is sourced from the original manufacturer or authorized distributors?

All STPS5H100B 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 STPS5H100B meets industry standards.

7.What is the process for return or replacement of STPS5H100B?

All STPS5H100B units undergo pre-shipment inspection (PSI). If there is an issue with STPS5H100B, 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 STPS5H100B part is unused and in its original packaging.

Return procedure for STPS5H100B:

1.Submit a request within 90 days.

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

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