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STMicroelectronics STPS20S100CR
- Part No.:
- STPS20S100CR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Datasheet:
-
STPS20S100CR.pdf
- Description:
- DIODE ARRAY SCHOT 100V 10A I2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:244
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Product details
Overview
STPS20S100CR from STMicroelectronics is a dual common-cathode Schottky barrier rectifier optimized for high-frequency SMPS, DC/DC converters, and LED lighting. It delivers 2 × 10 A average forward current per diode, 100 V repetitive peak reverse voltage, and operates up to 175 °C junction temperature in TO-220AB and TO-220FPAB packages.
For engineers reviewing the STPS20S100CR datasheet, STPS20S100CR pinout, STPS20S100CR application, or STPS20S100CR equivalent, key selection criteria include thermal performance under high ambient conditions, low forward voltage at 125 °C (0.66 V typ. @ 10 A), avalanche energy rating (518 W), and dual-diode configuration for interleaved or parallel output stages.
Technical Context
This dual Schottky rectifier integrates two independent anodes (A1, A2) sharing a common cathode (K), enabling synchronous or split-output topologies in compact power supplies. Its low VF (0.66 V typ. @ 10 A, 125 °C) and low IR (≤4.5 mA @ 125 °C, VR = 100 V) minimize conduction and leakage losses in thermally constrained environments.
The device supports high-reliability operation via 175 °C maximum junction temperature, 180 A non-repetitive surge current, and specified avalanche capability (PARM = 518 W @ tp = 10 µs). Thermal resistance is package-dependent: Rth(j–c) = 1.3 °C/W (TO-220AB, total), 3.5 °C/W (TO-220FPAB, total).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 2 × 10 A per diode - enables dual-output or current-sharing designs without external paralleling |
| VRRM | 100 V - suitable for 48 V input systems with margin against transients |
| VF (typ.) | 0.66 V @ 10 A, 125 °C - reduces conduction loss by ~15% vs. comparable 0.78 V devices at elevated temperature |
| Tj max | 175 °C - allows placement in confined, high-ambient zones (e.g., enclosed LED drivers) |
| IR (max) | 4.5 mA @ 125 °C, VR = 100 V - limits standby power loss in always-on DC/DC stages |
| PARM | 518 W @ tp = 10 µs - provides robustness against inductive switching surges in buck-derived topologies |
| Rth(j–c) | 1.3 °C/W (TO-220AB, total) - enables >20 W dissipation with standard heatsink mounting |
Pinout & Package
Available in TO-220AB (3-pin, insulated tab) and TO-220FPAB (3-pin, non-insulated flange) packages. Both feature common-cathode configuration with pins labeled A1, A2, and K.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | First diode anode; used for primary output path or phase 1 in interleaved designs |
| A2 | Anode 2 | Second diode anode; enables dual-rail outputs or redundancy without extra components |
| K | Common Cathode | Shared cathode node; simplifies PCB layout and thermal management for dual-diode operation |
Key Features
| Feature | Design Value |
|---|---|
| High Tj capability | 175 °C max junction temperature - eliminates derating in sealed adapters or LED ballasts |
| Low VF at high Tj | 0.66 V typ. @ 10 A, 125 °C - maintains efficiency when ambient exceeds 85 °C |
| Avalanche-rated | 518 W repetitive peak avalanche power - withstands MOSFET turn-off spikes in hard-switched converters |
| ECOPACK®2 compliant | Halogen-free, RoHS-compliant packaging - meets industrial and lighting environmental mandates |
| Low IR at 125 °C | ≤4.5 mA reverse leakage - critical for low-power standby regulation in multi-output SMPS |
Applications
| AC-DC Adapter Power Supply | Industrial DC/DC Converter |
|---|---|
|
Use Scenario: 24 V/15 A output stage in wall-mounted AC-DC adapter for PoE switches. IC Role / Device Role / Timing Role: Output rectifier in synchronous flyback secondary side. Use Value: Dual-anode structure allows interleaved conduction, reducing output ripple and EMI filter size. |
Use Scenario: Dual 12 V outputs in DIN-rail mounted 48 V-to-12/5 V converter for PLC I/O modules. IC Role / Device Role / Timing Role: Common-cathode dual rectifier for independent but thermally coupled outputs. Use Value: Shared cathode simplifies heatsinking while maintaining isolation between output rails. |
| LED Driver for High-Bay Lighting | Desktop PC ATX +12 V Rail |
|
Use Scenario: Secondary-side rectification in constant-current LED driver operating at 90 °C ambient. IC Role / Device Role / Timing Role: High-efficiency Schottky rectifier in boost-derived topology. Use Value: 175 °C Tj rating avoids thermal shutdown during sustained full-load operation in enclosed fixtures. |
Use Scenario: +12 V output rectification in ATX mainboard VRM auxiliary stage. IC Role / Device Role / Timing Role: Low-VF rectifier supporting transient load steps up to 200 A/ms. Use Value: 180 A IFSM and low Rth(j–c) ensure reliability during CPU burst loads without thermal throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-20CPH05-M3 | Single-diode, 20 A IF(AV), 50 V VRRM, TO-220AC package, VF = 0.52 V @ 10 A, 25 °C | Lacks dual-anode configuration and 100 V rating; unsuitable for 48 V bus applications | Select only for lower-voltage (<40 V), single-output designs where dual rectification is unnecessary |
| ON Semiconductor MBR20100CT | Dual common-cathode, 20 A IF(AV), 100 V VRRM, TO-220AB, VF = 0.82 V @ 10 A, 25 °C, Tj max = 150 °C | Higher VF (+0.16 V typ. at 25 °C) and lower Tj limit reduces efficiency in high-ambient LED drivers | Acceptable for cost-sensitive 48 V SMPS where thermal headroom exceeds 25 °C and efficiency <92% is acceptable |
Compared with VS-20CPH05-M3 and MBR20100CT, STPS20S100CR uniquely combines 100 V rating, dual-anode topology, 175 °C Tj, and sub-0.67 V VF at 125 °C-making it optimal for thermally aggressive, multi-output, or high-bus-voltage SMPS where reliability and efficiency co-constrain design.
Availability
STPS20S100CR is available at Aetrix Electronics and suitable for AC-DC adapters, industrial DC/DC converters, and LED lighting systems requiring stable component supply across extended product lifecycles.
Supply support for STPS20S100CR 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, specializing in power management, analog, microcontrollers, and automotive ICs.
The STPS20S100CR belongs to ST's high-reliability Schottky rectifier product line, engineered specifically for high-frequency, high-temperature switch-mode power supplies in space-constrained industrial and lighting applications.
FAQ
What is the thermal resistance from junction to case for STPS20S100CR in TO-220AB?
The total junction-to-case thermal resistance (Rth(j–c)) for STPS20S100CR in TO-220AB is 1.3 °C/W under specified mounting conditions. This value applies to the combined dissipation of both diodes and assumes proper heatsink interface with recommended torque (0.55 N·m) on the mounting screw.
Does STPS20S100CR support avalanche operation in continuous mode?
No-STPS20S100CR is rated for repetitive peak avalanche power (PARM = 518 W) only under pulsed conditions (tp = 10 µs, Tj = 125 °C). It is not designed for continuous avalanche conduction; sustained reverse bias beyond VRRM risks irreversible failure.
How are the anodes A1 and A2 electrically isolated in STPS20S100CR?
A1 and A2 are fully isolated semiconductor dies sharing only the common cathode metallization. There is no internal electrical connection between A1 and A2; each anode conducts independently to K, enabling true dual-channel rectification with separate input paths.
Can STPS20S100CR be used in place of a single 20 A Schottky diode?
Yes-but only if the circuit uses both anodes (A1 and A2) in parallel with matched trace lengths and thermal coupling. Using only one anode forfeits half the rated current and unbalances thermal distribution; full 20 A utilization requires simultaneous conduction of both diodes into the shared cathode.
STPS20S100CR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 3.5 µA @ 100 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- I2PAK
STPS20S100CR FAQ
1.How can I place an order for STPS20S100CR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS20S100CR 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 STPS20S100CR reliable?
The price and inventory of STPS20S100CR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20S100CR is usually 5 days.
3.What payment methods are accepted for STPS20S100CR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20S100CR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS20S100CR?
STPS20S100CR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS20S100CR 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 STPS20S100CR?
For technical support, including STPS20S100CR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20S100CR requirements.
6.How does Aetrix verify that STPS20S100CR is sourced from the original manufacturer or authorized distributors?
All STPS20S100CR 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 STPS20S100CR meets industry standards.
7.What is the process for return or replacement of STPS20S100CR?
All STPS20S100CR units undergo pre-shipment inspection (PSI). If there is an issue with STPS20S100CR, 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 STPS20S100CR part is unused and in its original packaging.
Return procedure for STPS20S100CR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS20S100CR Tags
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