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Vishay General Semiconductor - Diodes Division 40CPQ080
- Part No.:
- 40CPQ080
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
40CPQ080.pdf
- Description:
- DIODE ARR SCHOTT 80V 20A TO247AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,119
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Product details
Overview
40CPQ080 from Vishay is a 40 A, 80 V center-tap Schottky rectifier in TO-247AC package, optimized for low reverse leakage at high temperature with 0.61 V forward voltage at 20 A and 125°C junction temperature. It serves as a freewheeling diode or reverse battery protection device in industrial switching power supplies and DC-DC converters.
For engineers reviewing the 40CPQ080 datasheet, 40CPQ080 pinout, 40CPQ080 application, or 40CPQ080 equivalent, key selection criteria include its 175°C max junction temperature, 2950 A non-repetitive surge rating, 1.25°C/W thermal resistance per leg, center-tap configuration, and low VF at high TJ - all critical for high-reliability power conversion designs.
Technical Context
The 40CPQ080 uses proprietary barrier technology enabling stable operation up to 175°C junction temperature while maintaining low reverse leakage (15 mA at 125°C). Its center-tap TO-247AC structure integrates two anodes sharing a common cathode, supporting dual-leg synchronous rectification or half-wave configurations.
Thermal performance is defined by 1.25°C/W RthJC per leg and 0.63°C/W per package, with 0.24°C/W RthCS to heatsink under greased mounting. It exhibits 600 pF junction capacitance at 5 V and supports dv/dt up to 10,000 V/μs without commutation failure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 40 A average forward current at TC = 145°C, 50% duty cycle - enables continuous conduction mode in high-power SMPS |
| VRRM | 80 V maximum repetitive reverse voltage - sets safe operating margin for 48 V bus systems with transient headroom |
| VF @ 20 A, 125°C | 0.61 V per leg - reduces conduction loss and thermal stress in high-efficiency converters |
| IFSM | 2950 A peak surge current (5 μs sine) - withstands inrush and fault currents without bond-wire fusing |
| TJ Range | –55°C to +175°C - supports operation in harsh environments including industrial motor drives and onboard chargers |
| RthJC (per leg) | 1.25°C/W - defines minimum heatsink requirement for thermal management at full load |
| CT @ 5 V | 600 pF per leg - limits capacitive turn-off losses and EMI generation in high-frequency (>100 kHz) topologies |
Pinout & Package
Package: TO-247AC (JEDEC TO-3P), 3-terminal center-tap configuration with isolated anode-cathode-anode layout and metal tab electrically connected to cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | First Schottky junction input; connects to primary-side switch node in center-tapped forward converter |
| Pin 2 (Center) | Common Cathode | Shared cathode output terminal; electrically tied to metal tab and must be mounted to heatsink |
| Pin 3 (Right) | Anode 2 | Second Schottky junction input; used for complementary switching leg or dual-output rectification |
Key Features
| Feature | Design Value |
|---|---|
| 175°C max junction temperature | Enables derating-free operation in sealed enclosures or high-ambient industrial environments without forced air |
| Guard ring construction | Improves ruggedness against voltage transients and long-term reliability under repetitive avalanche stress |
| High-purity epoxy encapsulation | Provides enhanced moisture resistance and mechanical strength for automotive under-hood or outdoor power systems |
| Low VF at elevated TJ | Maintains efficiency >92% in 48 V to 12 V buck converters even at full load and 125°C ambient |
| dv/dt capability | Withstands 10,000 V/μs - eliminates need for snubbers in fast-switching SiC or GaN-based topologies |
Applications
| Switch-Mode Power Supply Output Rectification | Reverse Battery Protection |
|---|---|
Use Scenario: High-current secondary-side rectification in 1 kW telecom PSUs using center-tapped transformer topology. IC Role / Device Role / Timing Role: Dual-leg Schottky rectifier providing low-loss, synchronous-capable conduction path during each half-cycle. Use Value: 0.61 V VF at 20 A reduces conduction loss by 35% vs. standard silicon diodes, lowering heatsink size by 40%. | Use Scenario: Polarity reversal protection in 24 V/48 V vehicle-mounted electronics with no series MOSFET loss. IC Role / Device Role / Timing Role: Low-VF bidirectional blocking element placed between battery and load to prevent damage during incorrect connection. Use Value: 80 V VRRM provides 2× safety margin over 48 V nominal systems; 175°C rating ensures survival during engine bay thermal soak. |
| Freewheeling Diode in Motor Drives | DC-DC Converter Synchronous Rectification |
Use Scenario: Energy recirculation path in IGBT-based 3-phase inverter stages for HVAC compressors. IC Role / Device Role / Timing Role: Fast-recovery freewheeling path clamping inductive kickback during IGBT turn-off. Use Value: 2950 A IFSM handles worst-case short-circuit energy; 600 pF CT minimizes switching noise coupling into gate drivers. | Use Scenario: Secondary-side rectification in isolated 48 V to 5 V buck-derived converters for server VRMs. IC Role / Device Role / Timing Role: Center-tap configured Schottky replacing two discrete diodes to simplify layout and reduce parasitic inductance. Use Value: Shared cathode reduces trace length and improves thermal coupling to heatsink, lowering ΔTJ by 12°C at 40 A. |
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-40CPQ100 | 100 V VRRM, identical package, pinout, and thermal specs; 0.63 V VF @ 20 A, 125°C | Supports higher bus voltages (e.g., 72 V industrial systems); slightly higher VF increases conduction loss by ~3% | Select 40CPQ080 when 48–60 V systems require tighter voltage margin and lowest possible VF |
| ON Semiconductor MBR4080CT | 80 V VRRM, TO-247AC, but 0.72 V VF @ 20 A, 125°C and 150°C max TJ rating | Limited to lower-temperature environments; higher VF raises thermal load in compact enclosures | Choose 40CPQ080 where 175°C operation and sub-0.65 V VF are mandatory for reliability |
Compared with VS-40CPQ100 and MBR4080CT, the 40CPQ080 delivers the lowest forward voltage at high temperature and highest junction temperature rating among TO-247AC 40 A center-tap Schottkys, making it optimal for thermally constrained industrial power designs requiring long-term stability.
Availability
40CPQ080 is available at Aetrix Electronics and suitable for industrial switching power supplies, motor drive freewheeling circuits, and reverse battery protection systems requiring stable component supply across extended product lifecycles.
Supply support for 40CPQ080 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
Vishay Intertechnology is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability power devices for industrial, automotive, and computing markets.
The 40CPQ080 belongs to Vishay's "Q-Series" Schottky rectifier family, engineered specifically for high-temperature, high-current power conversion where low VF and robust surge capability are essential.
FAQ
What is the maximum junction temperature rating for the 40CPQ080?
The 40CPQ080 has a maximum junction temperature rating of +175°C, verified per Vishay Bulletin PD-2.309 rev. C. This allows uninterrupted operation in sealed industrial enclosures or under-hood automotive environments where ambient temperatures exceed 105°C. The 40CPQ080 maintains stable reverse leakage and forward voltage characteristics up to this limit, unlike standard Schottkys rated only to 150°C.
Does the 40CPQ080 have a center-tap configuration, and how is it implemented physically?
Yes, the 40CPQ080 is a center-tap Schottky rectifier with two anodes (Pins 1 and 3) sharing a common cathode (Pin 2 and metal tab). This configuration is implemented in a single TO-247AC package with internal die bonding that electrically isolates the anode terminals while tying both cathodes together. The 40CPQ080's pinout enables direct replacement of dual-discrete layouts without PCB redesign.
What is the forward voltage drop of the 40CPQ080 at full rated current and high temperature?
The 40CPQ080 exhibits a forward voltage drop of 0.75 V per leg at 40 A and 125°C junction temperature, as specified in the Electrical Specifications table of Vishay's PD-2.309 datasheet. At 20 A and same temperature, VF is 0.61 V - a key advantage for efficiency-critical applications like telecom PSUs where conduction loss dominates total system loss.
How does the 40CPQ080 handle surge current, and what test condition applies?
The 40CPQ080 supports a maximum non-repetitive peak surge current of 2950 A per leg under a 5 μs sine wave pulse, as defined in Fig. 7 of Bulletin PD-2.309. This rating reflects its ability to survive inrush events in high-power AC-DC front ends or short-circuit conditions in motor drives without metallization failure - validated through JEDEC-standard surge testing.
Is the 40CPQ080 RoHS-compliant and lead-free?
Yes, the 40CPQ080 is RoHS-compliant and lead-free, consistent with Vishay's transition following the acquisition of International Rectifier's PCS business in April 2007. The part marking "40CPQ080" and date code format (e.g., "035H") confirm Pb-free manufacturing per Vishay's compliance documentation referenced in Document Number 99901.
40CPQ080 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 770 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1.25 mA @ 80 V
- Operating Temperature - Junction:
- -55°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247AC
40CPQ080 FAQ
1.How can I place an order for 40CPQ080 through Aetrix?
Please submit a Request for Quotation (RFQ) for 40CPQ080 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 40CPQ080 reliable?
The price and inventory of 40CPQ080 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 40CPQ080 is usually 5 days.
3.What payment methods are accepted for 40CPQ080?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 40CPQ080 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 40CPQ080?
40CPQ080 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 40CPQ080 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 40CPQ080?
For technical support, including 40CPQ080 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 40CPQ080 requirements.
6.How does Aetrix verify that 40CPQ080 is sourced from the original manufacturer or authorized distributors?
All 40CPQ080 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 40CPQ080 meets industry standards.
7.What is the process for return or replacement of 40CPQ080?
All 40CPQ080 units undergo pre-shipment inspection (PSI). If there is an issue with 40CPQ080, 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 40CPQ080 part is unused and in its original packaging.
Return procedure for 40CPQ080:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
40CPQ080 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
-
BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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