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STMicroelectronics STPS40M80CG-TR
- Part No.:
- STPS40M80CG-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STPS40M80CG-TR.pdf
- Description:
- DIODE ARRAY SCHOTT 80V 20A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:576
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Product details
Overview
STPS40M80CG-TR from STMicroelectronics is a dual common-cathode Schottky rectifier in D2PAK package, rated for 80 V repetitive peak reverse voltage and 2 × 20 A average forward current per diode at Tc = 150 °C, with typical forward voltage of 475 mV at 10 A and 125 °C - optimized for high-efficiency AC/DC adapters in notebook, LCD TV, and game station power supplies.
For engineers reviewing the STPS40M80CG-TR datasheet, STPS40M80CG-TR pinout, STPS40M80CG-TR application, or STPS40M80CG-TR equivalent, key selection criteria include junction-to-case thermal resistance (0.75 °C/W total), avalanche energy rating (10,000 W at tp = 1 µs), low leakage (<40 mA at 125 °C, VR = VRRM), dual-diode conduction loss modeling, and D2PAK thermal pad layout compatibility.
Technical Context
This dual Schottky rectifier integrates two independent anodes sharing a common cathode terminal, enabling synchronous or interleaved operation in center-tapped or dual-output SMPS topologies. Its 175 °C maximum junction temperature and 1.30 °C/W per-diode Rth(j-c) support high-power-density thermal design without forced airflow.
The device features specified avalanche capability (VARM = 100 V, IAR < 30 A, tp < 1 µs) and uses optimized metal-semiconductor junctions to balance VF (0.475 V typ. @ 10 A, 125 °C) against IR (≤40 mA @ 125 °C, VR = VRRM), critical for light-load efficiency in adapter applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 80 V - defines maximum reverse blocking capability in continuous operation, suitable for 24–48 V output secondary-side rectification. |
| IF(AV) per diode | 20 A at Tc = 150 °C - sets thermal-limited DC current handling per anode under heatsink-cooled conditions. |
| VF (typ) | 475 mV @ 10 A, 125 °C - directly determines conduction loss (P ≈ 0.475×IF + 0.008×IF²) and impacts adapter full-load efficiency. |
| Rth(j-c) total | 0.75 °C/W - combined thermal resistance for both diodes to case, enabling accurate junction temperature prediction under shared heatsink mounting. |
| IR max | 40 mA @ 125 °C, VR = VRRM - quantifies reverse leakage impact on standby power and thermal runaway risk in high-temp environments. |
| PARM | 10,000 W @ tp = 1 µs - specifies single-pulse avalanche energy absorption, supporting robustness during transient overvoltage events. |
| Tj(max) | 175 °C - maximum allowable junction temperature, defining safe operating margin above ambient and heatsink limits. |
Pinout & Package
Package: D2PAK (TO-263AB), surface-mount with exposed thermal pad; dimensions per Table 6 (A = 4.40–4.60 mm, E = 10.00–10.40 mm, L = 15.00–15.85 mm); requires minimum 2 mm flat zone on PCB for thermal pad soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first Schottky junction; connects to transformer secondary winding or switching node in dual-output topology. |
| A2 | Anode 2 | Input terminal for second Schottky junction; enables independent or interleaved rectification paths with shared cathode. |
| K | Common Cathode | Output node for both diodes; must be routed to low-inductance ground plane and thermally coupled to heatsink via exposed pad. |
Key Features
| Feature | Design Value |
|---|---|
| Optimized VF/IR trade-off | 475 mV VF (typ) @ 10 A, 125 °C and ≤40 mA IR @ 125 °C enable high light-load and full-load efficiency in universal-input adapters. |
| Dual-anode common-cathode configuration | Supports independent control of two output rails or phase-interleaved rectification, reducing output ripple and thermal stress distribution. |
| Avalanche-rated structure | 100 V VARM and 10,000 W PARM allow safe clamping of inductive switching transients without external snubbers in flyback or LLC designs. |
| High-Tj capability | 175 °C max junction temperature permits operation in compact, sealed enclosures where ambient exceeds 85 °C. |
| D2PAK thermal performance | 0.75 °C/W total Rth(j-c) enables >30 W dissipation with standard 2-layer 2 oz copper PCB heatsinking, eliminating need for bolted heatsinks. |
Applications
| Notebook Adapter Secondary Rectification | LCD TV Power Supply Output Stage |
|---|---|
|
Use Scenario: Dual 12 V and 19 V outputs in ultra-thin notebook adapters requiring >90% efficiency across 5–100% load range. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing synchronous rectification for two independent secondary windings. Use Value: 475 mV VF minimizes conduction loss at light loads; common-cathode layout simplifies PCB routing and reduces parasitic inductance. |
Use Scenario: 24 V and 12 V auxiliary rails in 43–75 inch LCD TV power boards operating in enclosed, thermally constrained chassis. IC Role / Device Role / Timing Role: High-current secondary-side rectifier handling peak currents up to 40 A (combined) in quasi-resonant flyback converters. Use Value: 175 °C Tj(max) and 0.75 °C/W Rth(j-c) sustain reliability at 70 °C ambient without derating; avalanche rating absorbs transformer leakage spikes. |
| Game Station External Power Adapter | Desktop PC Multi-Rail PSU Secondary |
|
Use Scenario: Compact 12 V/5 V dual-output adapter for gaming consoles with strict no-fan cooling requirements and 200 kHr MTBF target. IC Role / Device Role / Timing Role: Dual Schottky rectifier delivering regulated outputs while maintaining <150 mW no-load consumption. Use Value: Low IR (<40 mA @ 125 °C) prevents thermal runaway during sustained high-ambient operation; D2PAK footprint supports automated optical inspection. |
Use Scenario: Multi-rail ATX PSUs requiring isolated 3.3 V, 5 V, and 12 V outputs with independent current monitoring and fast transient response. IC Role / Device Role / Timing Role: Dual-channel secondary rectifier enabling independent regulation of 5 V and 3.3 V rails using shared transformer secondary and discrete feedback loops. Use Value: Independent anode terminals allow separate current sensing; 200 A IFSM withstands cold-start surges without degradation. |
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-40CPQ080 | Same 80 V VRRM and 2 × 20 A IF(AV), but TO-247AC package; Rth(j-c) = 1.0 °C/W per diode (vs. 0.75 °C/W total for STPS40M80CG-TR). | Requires bolted heatsink; unsuitable for space-constrained D2PAK layouts; higher thermal resistance increases junction temp by ~15 °C at 20 A. | Select when mechanical mounting flexibility outweighs PCB area constraints and thermal performance is secondary. |
| ON Semiconductor MBR4080CT | Identical TO-220AB package variant (STPS40M80CT); same electrical specs but 1.30 °C/W Rth(j-c) per diode and no avalanche rating. | Lacks PARM/VARM specification; not recommended for designs subject to unclamped inductive transients or high-reliability field deployment. | Select only for cost-sensitive, non-avalanche-critical applications with adequate heatsinking and snubber protection. |
Compared with VS-40CPQ080 and MBR4080CT, STPS40M80CG-TR delivers superior thermal performance in surface-mount form factor and verified avalanche ruggedness - making it optimal for high-density, fanless, and transient-prone adapter designs where reliability and board space are co-constrained.
Availability
STPS40M80CG-TR is available at Aetrix Electronics and suitable for notebook adapter secondary rectification, LCD TV power supply output stages, and game station external power adapters requiring stable component supply and long-term industrial availability.
Supply support for STPS40M80CG-TR 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 industrial, automotive, and consumer markets.
STPS40M80CG-TR belongs to ST's STPS Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency AC/DC power conversion in compact, thermally demanding adapter and PSU applications.
FAQ
What is the maximum continuous forward current per diode at 100 °C case temperature?
At Tc = 100 °C, the maximum average forward current per diode is approximately 28 A, derived from linear derating between 150 °C (20 A) and 25 °C (35 A) per Figure 3. This value assumes δ = 0.5 duty cycle and proper thermal interface to a heatsink.
Does STPS40M80CG-TR require a heatsink in typical adapter applications?
Yes - the D2PAK package relies on PCB copper area as its primary heatsink. ST recommends ≥25 cm² of 2 oz copper connected to the exposed thermal pad; without this, junction temperature exceeds 175 °C at >15 A per diode, risking premature failure.
Can STPS40M80CG-TR replace single-diode Schottky rectifiers like STPS2080CT?
No - STPS40M80CG-TR is a dual-anode common-cathode device with three terminals (A1, A2, K), whereas STPS2080CT is a dual-common-anode part (K1, K2, A). Pinout, internal topology, and circuit function are incompatible without redesigning the secondary-side layout and bias network.
Is the avalanche rating tested per diode or for the entire device?
The avalanche rating (PARM = 10,000 W, VARM = 100 V) applies per diode, as confirmed in Table 2 footnote and Figure 11. Both diodes may be subjected to simultaneous avalanche events, but total power dissipation must remain within thermal limits defined by Rth(j-c) and heatsink capability.
STPS40M80CG-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 80 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 735 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 65 µA @ 80 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
STPS40M80CG-TR FAQ
1.How can I place an order for STPS40M80CG-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS40M80CG-TR 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 STPS40M80CG-TR reliable?
The price and inventory of STPS40M80CG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS40M80CG-TR is usually 5 days.
3.What payment methods are accepted for STPS40M80CG-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS40M80CG-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS40M80CG-TR?
STPS40M80CG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS40M80CG-TR 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 STPS40M80CG-TR?
For technical support, including STPS40M80CG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS40M80CG-TR requirements.
6.How does Aetrix verify that STPS40M80CG-TR is sourced from the original manufacturer or authorized distributors?
All STPS40M80CG-TR 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 STPS40M80CG-TR meets industry standards.
7.What is the process for return or replacement of STPS40M80CG-TR?
All STPS40M80CG-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS40M80CG-TR, 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 STPS40M80CG-TR part is unused and in its original packaging.
Return procedure for STPS40M80CG-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS40M80CG-TR Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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