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STPS50U100CT
STMicroelectronics
DIODE ARR SCHOTT 100V 25A TO220
1315 Pcs New Original In Stock
Diode Array 1 Pair Common Cathode 100 V 25A Through Hole TO-220-3
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5.0 / 5.0
- (76 Ratings)
STPS50U100CT
Product Overview
12879606
DiGi Electronics Part Number
STPS50U100CT-DGManufacturer
STMicroelectronics
STPS50U100CT
Description
DIODE ARR SCHOTT 100V 25A TO220Inventory
1315 Pcs New Original In Stock
Diode Array 1 Pair Common Cathode 100 V 25A Through Hole TO-220-3
Quantity
Minimum 1
Minimum 1
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STPS50U100CT Technical Specifications
Category
Diodes, Rectifiers, Diode Arrays
Packaging
-
Series
-
Product Status
Obsolete
Diode Configuration
1 Pair Common Cathode
Technology
Schottky
Voltage - DC Reverse (Vr) (Max)
100 V
Current - Average Rectified (Io) (per Diode)
25A
Voltage - Forward (Vf) (Max) @ If
730 mV @ 25 A
Speed
Fast Recovery =< 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr
200 µA @ 100 V
Operating Temperature - Junction
150°C (Max)
Mounting Type
Through Hole
Package / Case
TO-220-3
Supplier Device Package
TO-220
Base Product Number
STPS50
Datasheet & Documents
HTML Datasheet
STPS50U100CT-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Other Names
-497-10398-5
497-10398-5
Standard Package
50
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Une expérience client très positive grâce à leur capacité à livrer rapidement et à répondre efficacement.
December 02, 2025
Die Betreuung nach dem Kauf bei DiGi Electronics ist erstklassig, sie haben mir bei der Auswahl sehr gut geholfen.
December 02, 2025
Fast shipping and excellent customer service make shopping here a great experience.
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Frequently Asked Questions (FAQ)
What are the key reliability risks when using the STPS50U100CT in high-temperature industrial motor drives, and how can I mitigate them despite its 150°C max junction rating?
While the STPS50U100CT is rated for a 150°C junction temperature, sustained operation near this limit—common in motor drives with poor airflow or high ripple current—can accelerate Schottky barrier degradation and increase reverse leakage over time. To mitigate risk, derate the device to ≤125°C Tj in practice, ensure adequate heatsinking with thermal interface material, and monitor case temperature to stay below 100°C. Additionally, consider adding snubber circuits to suppress voltage transients that stress the diode beyond its 100V reverse rating under inductive load switching.
Can I replace the obsolete STPS50U100CT with the SBR40U100CT-G in an existing power supply design without redesigning the PCB or thermal management?
The SBR40U100CT-G is electrically similar (100V, 40A total, TO-220-3) and pin-compatible with the STPS50U100CT, but it uses a silicon-based Super Barrier Rectifier (SBR) instead of Schottky technology, resulting in higher forward voltage (~0.85V vs. 0.73V at 25A). This increases conduction losses by ~17%, potentially raising junction temperature if thermal design is marginal. Verify that your heatsink can handle the extra ~0.5W per diode at full load, and confirm reverse recovery performance meets your EMI requirements—SBRs have faster turn-off than standard rectifiers but may generate more high-frequency noise than Schottky.
How does the common-cathode configuration of the STPS50U100CT impact layout and thermal performance in a dual-output buck converter compared to independent diodes?
The common-cathode arrangement in the STPS50U100CT simplifies grounding and reduces loop inductance when both diodes share a return path—beneficial in tightly coupled buck topologies. However, it forces both anodes to be electrically isolated from each other and the heatsink tab (which is connected to the common cathode). This requires insulated mounting hardware (e.g., mica washers and shoulder bushings) to avoid shorting, adding complexity and slightly reducing thermal efficiency. Ensure your PCB layout maintains symmetry between the two diode paths to balance current sharing, especially under dynamic loads, as mismatched parasitics can lead to uneven heating and premature failure.
Is the STPS50U100CT suitable for use in a 48V-to-12V automotive DC-DC converter where input transients may exceed 100V, and what protection strategies are recommended?
The STPS50U100CT’s 100V reverse voltage rating leaves minimal margin for automotive load-dump transients, which can reach 120–150V. Using it without additional protection risks avalanche breakdown, even though Schottky diodes aren’t rated for repetitive avalanche energy. Implement a TVS diode (e.g., SMAJ58A) at the input stage to clamp transients below 90V, and consider a pre-regulator or LC filter to attenuate spikes. Alternatively, evaluate higher-voltage substitutes like the NTST40100CTG (100V-rated but with better surge handling) or MBR41H100CTG (100V, 40A, with enhanced robustness), though these may require re-evaluation of efficiency trade-offs.
Given that the STPS50U100CT is obsolete, what long-term sourcing and qualification steps should I take if I must continue production of my industrial UPS system?
Since the STPS50U100CT is obsolete, immediate action is required to avoid line-down risks. First, secure remaining stock through authorized distributors while verifying authenticity via ST’s traceability tools. Second, qualify one or more listed substitutes—such as the MBRP3010NTU or MBR10100CT-BP—through full environmental and electrical testing under your actual operating conditions (including thermal cycling, surge testing, and long-term leakage monitoring). Document all changes per your quality management system (e.g., ISO 9001), and update BOMs with second-source part numbers. For critical applications, consider redesigning with a modern, actively supported Schottky like the STPS50U120CG (120V variant) to future-proof the design and gain additional voltage margin.
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STPS50U100CT CAD Models
STMicroelectronics STPS50U100CT PCB symbols & footprints
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