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STMicroelectronics STPS40SM100CR
- Part No.:
- STPS40SM100CR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Datasheet:
-
STPS40SM100CR.pdf
- Description:
- DIODE ARRAY SCHOT 100V 20A I2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
STPS40SM100CR from STMicroelectronics is a dual 100 V, 2 × 20 A average forward current Schottky rectifier in TO-220AB package, optimized for high-frequency SMPS and DC/DC converters in notebook and game station adapters. It delivers typ. 0.605 V forward voltage at 40 A, supports 150 °C max junction temperature, and features avalanche-rated capability (1295 W, 10 µs).
For engineers reviewing the STPS40SM100CR datasheet, STPS40SM100CR pinout, STPS40SM100CR application, or STPS40SM100CR equivalent, key selection criteria include low conduction loss (VF ≤ 0.665 V @ 20 A, 125 °C), thermal resistance (Rth(j-c) = 0.7 °C/W total), reverse leakage (≤ 45 mA @ 100 V, 125 °C), and ECOPACK®2 compliance.
Technical Context
This dual-diode Schottky rectifier integrates two independent 100 V, 20 A per diode elements in a single TO-220AB thermally coupled package. Its low VF–IR trade-off enables high efficiency across load ranges, while specified avalanche energy handling (1295 W, 10 µs) supports robust transient resilience in unregulated input stages.
The device uses planar Schottky barrier technology with metal-silicon junctions, enabling operation up to several MHz without significant switching loss penalties. Thermal coupling between diodes is quantified by Rth(c) = 0.1 °C/W, allowing accurate junction temperature estimation when both diodes conduct simultaneously.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage per diode; defines safe operating range in flyback/freewheeling applications |
| IF(AV) | 2 × 20 A - Average forward current rating per diode at TC = 130 °C; supports 40 A total device output in dual-phase or interleaved topologies |
| VF (typ.) | 0.605 V @ 40 A - Measured at 25 °C, 40 A; directly determines conduction loss P ≈ 0.580×IF(AV) + 0.0043×IF²(RMS) |
| Tj (max.) | 150 °C - Absolute maximum junction temperature; enables operation in compact, high-power-density adapter designs |
| Rth(j-c) | 0.7 °C/W (total) - Junction-to-case thermal resistance for full device; critical for heatsink sizing and thermal derating |
| IR (max.) | 45 mA @ 100 V, 125 °C - Reverse leakage per diode; impacts standby power and thermal runaway risk in parallel configurations |
| PARM | 1295 W @ 10 µs - Repetitive peak avalanche power; validates ruggedness against inductive turn-off transients |
Pinout & Package
TO-220AB package with isolated mounting tab (non-electrical), 3-terminal configuration: Pin 1 = Anode 1, Pin 2 = Cathode (common), Pin 3 = Anode 2. The cathode is internally connected to the metal tab for direct heatsinking and low-inductance return path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (A1) | Anode of Diode 1 | Input terminal for first Schottky path; electrically isolated from tab and Pin 3 |
| Pin 2 (K) | Common Cathode | Shared cathode node connected to metal tab; serves as main power return and thermal interface |
| Pin 3 (A2) | Anode of Diode 2 | Input terminal for second Schottky path; independent of A1 but thermally coupled via shared case |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | VF ≤ 0.665 V @ 20 A, 125 °C - Reduces conduction loss by ≥15% vs. standard 100 V Schottkys in high-load adapter operation |
| Avalanche capability | 1295 W peak power @ 10 µs - Enables reliable operation without external snubbers in flyback primary clamp circuits |
| Thermal coupling control | Rth(c) = 0.1 °C/W - Allows precise ΔTj calculation when both diodes operate concurrently, supporting dual-output DC/DC design |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy - Meets IEC 61249-2-21 and JEDEC J-STD-020 reflow requirements for industrial and consumer production |
Applications
| Adapter Power Stage | DC/DC Converter Output |
|---|---|
Use Scenario: Secondary-side rectification in 65–120 W AC/DC adapters for notebooks and gaming consoles. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing synchronous freewheeling and output rectification in quasi-resonant flyback topology. Use Value: 0.605 V typical VF at full load reduces secondary conduction loss by ~0.8 W vs. legacy 100 V Schottkys, improving efficiency by 0.4–0.6% at 100% load. | Use Scenario: Output rectification in isolated 12 V/5 V dual-rail DC/DC modules for embedded computing systems. IC Role / Device Role / Timing Role: Dual-channel synchronous rectifier delivering independent 20 A paths with shared thermal management. Use Value: Rth(j-c) = 0.7 °C/W total enables 40 A output with ≤25 °C junction rise over case at 25 W dissipation, eliminating need for oversized heatsinks. |
| LED Driver Freewheel | Industrial SMPS Input Stage |
Use Scenario: Freewheel path in constant-current LED drivers for commercial lighting fixtures (36–48 V output). IC Role / Device Role / Timing Role: High-frequency Schottky clamp preventing inductive kick during MOSFET turn-off in buck-derived topologies. Use Value: Avalanche rating supports 10 µs transients up to 1295 W, eliminating external TVS in cost-sensitive driver BOMs. | Use Scenario: Input bridge rectification in 200–300 W industrial SMPS with wide-input (85–265 VAC) and high ambient (70 °C) requirements. IC Role / Device Role / Timing Role: Dual-diode configuration used in split-phase input rectification to balance thermal stress across two anodes. Use Value: 150 °C Tj(max) and 45 mA IR @ 125 °C ensure stable operation under sustained overload without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 100 V Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-40CPH10-M3 | Single 100 V, 40 A device in TO-247AC; no dual-anode isolation; VF = 0.67 V @ 40 A, 25 °C | Requires external splitting for dual-path use; higher thermal resistance (Rth(j-c) = 0.9 °C/W) | Select when single-path high-current rectification suffices and board space allows TO-247 footprint |
| ON Semiconductor MBR40100CT | TO-220AB dual 100 V, 2 × 20 A; VF = 0.75 V @ 20 A, 25 °C; IR = 100 µA @ 100 V, 25 °C | Higher VF increases conduction loss by ~0.7 W at full load; lower leakage improves light-load efficiency | Select when leakage-sensitive standby performance outweighs full-load efficiency loss |
Compared with VS-40CPH10-M3 and MBR40100CT, STPS40SM100CR offers the lowest VF at high temperature (0.605 V @ 40 A, 25 °C), best thermal coupling control (Rth(c) = 0.1 °C/W), and highest avalanche ruggedness-making it optimal for thermally constrained, high-reliability adapter and DC/DC designs.
Availability
STPS40SM100CR is available at Aetrix Electronics and suitable for notebook adapters, gaming console power supplies, and industrial DC/DC converters requiring stable component supply, long-term lifecycle support, and consistent thermal performance across production batches.
Supply support for STPS40SM100CR 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.
The STPS series targets high-efficiency power conversion, with STPS40SM100CR specifically engineered for high-frequency, thermally demanding secondary-side rectification in compact AC/DC and isolated DC/DC systems.
FAQ
Is STPS40SM100CR pin-compatible with STPS40SM100C?
Yes, STPS40SM100CR and STPS40SM100C share identical TO-220AB pinout (A1–K–A2), mechanical dimensions, and thermal characteristics. The "R" suffix denotes tape-and-reel packaging (vs. tube for "C"), with no electrical or functional difference. Both meet ECOPACK®2 environmental specifications.
What is the maximum continuous current per diode at 100 °C ambient?
At 100 °C ambient and δ = 0.5 square wave, each diode supports 12 A average forward current with Rth(j-a) = 15 °C/W (per Figure 2). This assumes adequate heatsinking; actual current depends on system-level thermal design and airflow. Derating curves confirm 20 A is only valid at TC = 130 °C, not ambient.
Can STPS40SM100CR be used in parallel with another unit?
No-parallel operation is not recommended. The device's VF mismatch between diodes (±5% typical) and thermal coupling cause current imbalance. For >40 A applications, use a single higher-rated part (e.g., STPS60SM100C) or redesign with interleaved phases rather than paralleling units.
Does the metal tab connect to any internal node?
Yes-the metal tab is electrically connected to Pin 2 (common cathode K) and must be treated as a live circuit node. It is not isolated. When mounted to a heatsink, ensure the heatsink is either floating or referenced to the cathode potential to avoid short circuits or ground loops.
STPS40SM100CR 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):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 810 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 45 µA @ 100 V
- Operating Temperature - Junction:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- I2PAK
STPS40SM100CR FAQ
1.How can I place an order for STPS40SM100CR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS40SM100CR 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 STPS40SM100CR reliable?
The price and inventory of STPS40SM100CR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS40SM100CR is usually 5 days.
3.What payment methods are accepted for STPS40SM100CR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS40SM100CR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS40SM100CR?
STPS40SM100CR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS40SM100CR 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 STPS40SM100CR?
For technical support, including STPS40SM100CR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS40SM100CR requirements.
6.How does Aetrix verify that STPS40SM100CR is sourced from the original manufacturer or authorized distributors?
All STPS40SM100CR 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 STPS40SM100CR meets industry standards.
7.What is the process for return or replacement of STPS40SM100CR?
All STPS40SM100CR units undergo pre-shipment inspection (PSI). If there is an issue with STPS40SM100CR, 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 STPS40SM100CR part is unused and in its original packaging.
Return procedure for STPS40SM100CR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS40SM100CR Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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