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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

STMicroelectronics STPS41H100CT

Name: STPS41H100CT
Brand: STMicroelectronics
SKU: STPS41H100CT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS41H100CT

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

Package:: TO-220-3

Datasheet:: STPS41H100CT.pdf

Description:: DIODE ARR SCHOTT 100V 20A TO-220

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Product details

Overview

STPS41H100CT from STMicroelectronics is a dual common-cathode Schottky rectifier in TO-220AB package, rated for 100 V reverse voltage and 2 × 20 A average forward current per diode, with typical forward voltage drop of 0.62 V at 125 °C and 20 A. It delivers low thermal resistance (R_th(j-c) = 1.5 °C/W per diode), avalanche-rated power (1300 W), and ECOPACK2 compliance - optimized for high-frequency SMPS and DC/DC converters in industrial power supplies.

For engineers reviewing the STPS41H100CT datasheet, STPS41H100CT pinout, STPS41H100CT application, or STPS41H100CT equivalent, key selection criteria include its dual-diode configuration, 175 °C maximum junction temperature, negligible switching losses, low leakage (<10 µA @ 25 °C), and thermal coupling behavior between diodes under simultaneous conduction.

Technical Context

This device integrates two independent Schottky diodes sharing a common cathode terminal, enabling synchronous rectification or dual-output DC/DC topologies. Its low V_F–I_F trade-off and minimal reverse recovery charge eliminate switching losses in hard-switched converters operating up to several hundred kHz.

Thermal design requires attention to junction-to-case resistance (0.8 °C/W total for both diodes) and inter-diode thermal coupling (R_th(c) = 0.1 °C/W), as simultaneous conduction causes cross-heating - validated by ST's AN5088 thermal management guidelines and derating curves in DS2677.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - supports input stages of 48 V and 60 V bus systems with margin against transients
I_F(AV)	2 × 20 A - enables dual-channel 20 A outputs or single-channel 40 A operation with shared cathode
V_F (typ.)	0.62 V @ 20 A, 125 °C - reduces conduction loss to ~12.4 W per diode at full load
T_j(max)	175 °C - allows operation in sealed enclosures or high-ambient industrial environments
R_th(j-c)	1.5 °C/W per diode - mandates mechanical mounting to heatsink with ≤0.55 N·m torque on TO-220AB tab
I_R (max)	10 µA @ 125 °C, V_RRM - ensures minimal standby loss in auxiliary supplies and LED drivers
P_ARM	1300 W @ 10 µs pulse - provides robustness against inductive turn-off spikes in motor drives and inverters

Pinout & Package

Package: TO-220AB - insulated case, center-tab metal slug for direct heatsink mounting, lead-free plating, UL94 V0 molding compound.

Pin/Terminal	Circuit Role	Design Meaning
A1	Anode 1	Input terminal for first Schottky diode; connects to primary-side switch node in flyback or half-bridge
K	Common Cathode	Shared output node for both diodes; ties to output capacitor or secondary winding center tap
A2	Anode 2	Input terminal for second Schottky diode; used for dual-output or interleaved converter configurations

Key Features

Feature	Design Value
Negligible switching losses	Zero reverse recovery charge (Q_rr ≈ 0) eliminates snubber circuits and EMI in >100 kHz converters
Low thermal resistance	R_th(j-c) = 0.8 °C/W total enables 40 A conduction with <30 °C junction rise over heatsink at 25 °C ambient
Avalanche specification	Rated for 1300 W repetitive avalanche pulses - protects against inductive kickback without external clamping
ECOPACK2 compliance	Halogen-free, RoHS-compliant molding and lead-free terminations meet EU environmental directives for industrial OEMs
Thermal coupling control	Defined R_th(c) = 0.1 °C/W allows accurate junction temperature prediction when both diodes conduct simultaneously

Applications

Server PSU Secondary Side

Industrial DC/DC Converter

Use Scenario: High-efficiency 12 V/24 V output stage in 1 kW telecom rectifier modules.

IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing synchronous rectification for two parallel output phases.

Use Value: 0.62 V V_F at 125 °C cuts conduction loss by 35% vs. standard silicon diodes, improving full-load efficiency from 92% to 94.8%.

Use Scenario: Isolated 24 V → 5 V/3.3 V dual-output converter in PLC backplane power.

IC Role / Device Role / Timing Role: Common-cathode dual rectifier delivering independent regulated rails with shared thermal path.

Use Value: Thermal coupling parameter (R_th(c) = 0.1 °C/W) enables accurate co-thermal modeling for derating - critical for fanless industrial enclosures.

LED Driver Auxiliary Supply

Motor Drive Gate Driver Power

Use Scenario: 15 V auxiliary supply powering LED driver ICs and current-sense amplifiers in streetlight systems.

IC Role / Device Role / Timing Role: Low-leakage (≤10 µA @ 125 °C) Schottky rectifier in flyback snubber-recovery circuit.

Use Value: Sub-µA leakage at elevated temperature prevents standby power drift and ensures stable bias under 85 °C ambient conditions.

Use Scenario: Isolated gate driver supply in 3-phase IGBT inverter for HVAC compressors.

IC Role / Device Role / Timing Role: Avalanche-rated rectifier clamping transformer reset energy during IGBT turn-off transitions.

Use Value: 1300 W avalanche power rating absorbs 200 V/10 µs spikes without degradation - eliminating need for TVS diodes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-40CPH01-M3	Same 100 V / 40 A rating but TO-247AC package; R_th(j-c) = 1.0 °C/W (higher thermal performance), no avalanche rating	Lacks avalanche spec; requires external clamping in inductive switching; better suited for continuous-conduction-mode SMPS only	Select when thermal budget is tighter and avalanche stress is absent - verify layout clearance for TO-247 mounting
ON Semiconductor MBR40100CT	100 V / 40 A, TO-220AB, but VF = 0.85 V @ 20 A/25 °C; no specified avalanche rating; R_th(j-c) = 2.0 °C/W per diode	Higher conduction loss increases die temperature by ~18 °C at full load; unsuitable for 125 °C ambient designs	Acceptable for cost-sensitive, lower-power (<600 W) applications where thermal headroom exceeds 40 °C

Compared with VS-40CPH01-M3 and MBR40100CT, STPS41H100CT uniquely balances low V_F, certified avalanche ruggedness, and TO-220AB compatibility - making it optimal for thermally constrained, high-reliability industrial converters where transient immunity and efficiency are jointly critical.

Availability

STPS41H100CT is available at Aetrix Electronics and suitable for server power supplies, industrial DC/DC converters, and LED driver auxiliary supplies requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for STPS41H100CT 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 automotive, industrial, and consumer markets.

The STPS41H100CT belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency power conversion in industrial and telecom infrastructure where thermal reliability and transient robustness are non-negotiable.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPS41H100CT supports continuous operation with case temperature (T_c) up to 150 °C, as specified in the absolute ratings table for I_F(AV). At this T_c, each diode delivers 20 A average current. Exceeding 150 °C requires derating per Figure 2 in DS2677, which shows linear reduction to zero current at 175 °C junction temperature.

Can STPS41H100CT be used in parallel with another unit for higher current?

No - ST does not recommend paralleling STPS41H100CT units due to mismatch in forward voltage (V_F) across devices, which causes current imbalance and thermal runaway. Instead, use a single higher-rated device like STPS60H100C (60 A) or implement interleaved topology with separate windings and control.

Is the TO-220AB package electrically insulated?

Yes - the TO-220AB package has an electrically insulated case (plastic body), and the metal tab is isolated from all terminals. The tab serves solely as a thermal path; no electrical connection exists between the tab and A1, K, or A2 pins, as confirmed in ST's mechanical drawings and insulation test data in DS2677 Section 2.1.

How does thermal coupling affect simultaneous conduction of both diodes?

When both diodes conduct, heat from one diode raises the junction temperature of the other via R_th(c) = 0.1 °C/W. For example, if Diode 1 dissipates 15 W and Diode 2 dissipates 10 W, Diode 2's junction temperature rises by an additional 1.0 °C beyond its own self-heating - a factor explicitly modeled in ST's thermal equations and AN5088.

STPS41H100CT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Active

Diode Configuration:: 1 Pair Common Cathode

Technology:: Schottky

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

Current - Average Rectified (Io) (per Diode):: 20A

Voltage - Forward (Vf) (Max) @ If:: 800 mV @ 20 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 10 µA @ 100 V

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

STPS41H100CT FAQ

1.How can I place an order for STPS41H100CT through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS41H100CT 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 STPS41H100CT reliable?

The price and inventory of STPS41H100CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS41H100CT is usually 5 days.

3.What payment methods are accepted for STPS41H100CT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS41H100CT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS41H100CT?

STPS41H100CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS41H100CT 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 STPS41H100CT?

For technical support, including STPS41H100CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS41H100CT requirements.

6.How does Aetrix verify that STPS41H100CT is sourced from the original manufacturer or authorized distributors?

All STPS41H100CT 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 STPS41H100CT meets industry standards.

7.What is the process for return or replacement of STPS41H100CT?

All STPS41H100CT units undergo pre-shipment inspection (PSI). If there is an issue with STPS41H100CT, 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 STPS41H100CT part is unused and in its original packaging.

Return procedure for STPS41H100CT:

1.Submit a request within 90 days.

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

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