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Vishay General Semiconductor - Diodes Division VX40120C-M3/P
- Part No.:
- VX40120C-M3/P
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
VX40120C-M3/P.pdf
- Description:
- DIODE ARR SCHOT 120V 20A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,253
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Product details
Overview
VX40120C-M3/P from Vishay General Semiconductor is a dual high-voltage Trench MOS Barrier Schottky (TMBS®) rectifier in TO-220AB package, configured as common cathode, rated for 120 V reverse voltage and 2 × 20 A average forward current per diode, with ultra-low 0.42 V forward voltage at 5 A and 125 °C junction temperature-used in high-frequency DC/DC converters and reverse battery protection circuits.
For engineers reviewing the VX40120C-M3/P datasheet, VX40120C-M3/P pinout, VX40120C-M3/P application, or VX40120C-M3/P equivalent, this device offers verified AEC-Q101 qualification (HM3 variant), halogen-free RoHS compliance, 275 °C solder bath tolerance, and thermal resistance of 1 °C/W junction-to-case-critical for automotive power rail design and industrial switching supply reliability validation.
Technical Context
The VX40120C-M3/P integrates two independent TMBS® Schottky diodes in a single common-cathode TO-220AB package, enabling OR-ing and freewheeling functions without external interconnection. Its trench MOS barrier structure delivers lower VF than planar Schottky diodes while maintaining low leakage at 125 °C.
Thermal performance is defined by RθJC = 1 °C/W (per device), supporting high-power density layouts when mounted to heatsinks. The 250 A non-repetitive surge rating and -40 to +150 °C operating junction range enable robust operation in automotive transients and industrial ambient extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 120 V - blocks up to 120 V reverse voltage, suitable for 48 V automotive systems with margin. |
| IF(AV) per diode | 20 A - supports continuous 20 A conduction per anode under derated case temperature conditions. |
| VF at IF = 5 A, TJ = 125 °C | 0.42 V - enables <0.84 W conduction loss per diode at 5 A, reducing thermal load in compact designs. |
| IFSM | 250 A - withstands 8.3 ms half-sine surge, protecting against inrush and fault currents in SMPS inputs. |
| TJ max. | +150 °C - allows operation in under-hood automotive environments without derating below full current. |
| CJ at 4.0 V, 1 MHz | 2000 pF - limits high-frequency switching noise and EMI in >100 kHz DC/DC topologies. |
Pinout & Package
Package: TO-220AB, thermally enhanced plastic case with isolated metal tab (pin 2), matte tin-plated leads, UL 94 V-0 compliant molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first diode; connects to source-side node in OR-ing or freewheeling path. |
| Pin 2 | Case / Cathode Common | Electrically connected to both cathodes; must be mounted to heatsink with electrical isolation if system ground reference differs. |
| Pin 3 | Anode 2 | Input terminal for second diode; enables dual-input redundancy or interleaved converter phase management. |
Key Features
| Feature | Design Value |
|---|---|
| Trench MOS Schottky technology | Reduces forward voltage by ~15–20% vs. planar Schottky at same current, directly lowering conduction losses. |
| AEC-Q101 qualified (HM3 variant) | Validated for automotive powertrain and body electronics per stress test requirements including HTGB, HTRB, and TC. |
| Solder bath tolerance: 275 °C, 10 s | Supports lead-free reflow and wave soldering without delamination or bond wire damage. |
| Junction-to-case thermal resistance | 1 °C/W per device-enables predictable thermal modeling when heatsink interface resistance is known. |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets IEC 61249-2-21 and JEDEC J-STD-609A Class 1A whisker resistance requirements. |
Applications
| Automotive Reverse Battery Protection | High-Frequency DC/DC Converter Freewheeling |
|---|---|
|
Use Scenario: Prevents damage to 12 V/48 V vehicle ECUs during incorrect battery jump-start polarity. IC Role / Device Role / Timing Role: Dual-anode common-cathode configuration allows independent input paths with shared cathode return to battery ground. Use Value: 0.42 V VF at 5 A reduces power dissipation by >30% vs. standard Schottky, minimizing heat sink size in space-constrained junction boxes. |
Use Scenario: Provides low-loss recirculation path for inductor current in synchronous buck converters operating at 300–500 kHz. IC Role / Device Role / Timing Role: Functions as passive freewheeling diode during high-side switch off-time; CJ = 2000 pF minimizes ringing at switching edges. Use Value: 250 A IFSM rating absorbs peak inductor current surges without degradation, extending reliability in transient-heavy loads like ADAS camera modules. |
| OR-ing Diode for Dual Power Supplies | Industrial Switching Power Supply Output Rectification |
|
Use Scenario: Enables seamless switchover between primary and backup 24 V industrial power rails without backfeed. IC Role / Device Role / Timing Role: Each anode connects to separate supply; common cathode feeds load-ensures only higher-voltage rail conducts. Use Value: 20 A per diode rating supports parallel 48 A redundant supplies; low VF maintains voltage regulation within ±15 mV across full load range. |
Use Scenario: Rectifies output of 1 kW telecom-grade AC/DC front-end with active PFC stage. IC Role / Device Role / Timing Role: Dual-diode topology replaces two discrete TO-220 devices, reducing PCB area and thermal interface count. Use Value: RθJC = 1 °C/W allows direct mounting to shared heatsink, cutting thermal resistance by 40% vs. two separate packages with individual isolators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-voltage Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VX40120CHM3/P | AEC-Q101 qualified; identical electrical specs but validated for automotive use with extended reliability testing. | Required for automotive production; not necessary for commercial/industrial designs where qualification is not mandated. | Select VX40120CHM3/P when automotive qualification is contractually required or for safety-critical 48 V subsystems. |
| STPS40H12CG | 120 V, 40 A total (2 × 20 A), VF = 0.55 V @ 20 A, 150 °C TJ max, TO-220AC package with isolated tab. | Higher VF increases conduction loss by ~1.4 W per diode at 20 A; different pinout (anode-cathode-anode) limits layout reuse. | Use STPS40H12CG only if VX40120C-M3/P is unavailable; verify thermal interface compatibility due to TO-220AC vs. TO-220AB footprint. |
Compared with VX40120C-M3/P, the HM3 variant adds automotive qualification without electrical trade-offs, while STPS40H12CG offers similar current rating but higher VF and incompatible pinout-making VX40120C-M3/P optimal for cost-sensitive, high-efficiency industrial and commercial power conversion where AEC-Q101 is optional.
Availability
VX40120C-M3/P is available at Aetrix Electronics and suitable for high-frequency DC/DC converters, automotive reverse battery protection, and industrial switching power supply output rectification requiring stable component supply and long-term manufacturing continuity.
Supply support for VX40120C-M3/P 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 General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for demanding power and signal applications.
The VX40120C-M3/P belongs to Vishay's TMBS® rectifier family, engineered specifically for high-efficiency, high-temperature power conversion in automotive, industrial, and computing infrastructure.
FAQ
What is the maximum junction temperature rating for the VX40120C-M3/P?
The VX40120C-M3/P has a maximum junction temperature (TJ max.) of +150 °C, confirmed in the Absolute Maximum Ratings table. This rating enables reliable operation in under-hood automotive environments and high-ambient industrial enclosures without forced cooling, provided thermal design respects RθJC = 1 °C/W and ambient constraints. The VX40120C-M3/P maintains specified VF and IR performance up to this limit.
Is the VX40120C-M3/P pin-compatible with the VX40120CHM3/P?
Yes-the VX40120C-M3/P and VX40120CHM3/P share identical TO-220AB package dimensions, pinout (pins 1/anode1, 2/case-cathode, 3/anode2), and mechanical specifications. The only difference is AEC-Q101 qualification for the HM3 suffix; all electrical, thermal, and packaging parameters match exactly. The VX40120C-M3/P can be substituted for the HM3 version in non-automotive applications without layout changes.
What does the "M3" suffix indicate on the VX40120C-M3/P?
The "M3" suffix on VX40120C-M3/P denotes halogen-free, RoHS-compliant construction meeting JESD 201 Class 1A whisker resistance requirements, and compliance with JEDEC J-STD-609A. It also indicates tape-and-reel or tube packaging per ordering code (here: /P = tube). The M3 designation confirms suitability for lead-free assembly processes, including 275 °C solder bath exposure for 10 seconds.
Can the VX40120C-M3/P be used in a single-diode configuration?
Yes-the VX40120C-M3/P contains two electrically independent Schottky diodes sharing a common cathode (pin 2). Either anode (pin 1 or pin 3) can be used individually with the cathode, while leaving the unused anode unconnected. Derating applies: maximum IF(AV) remains 20 A per active diode, and thermal performance assumes full device mounting since RθJC is specified per device-not per diode.
What is the typical reverse leakage current of the VX40120C-M3/P at 120 V and 125 °C?
Per the Electrical Characteristics table, the VX40120C-M3/P exhibits a maximum reverse current (IR) of 40 mA per diode at VR = 120 V and TJ = 125 °C. This value reflects worst-case leakage under full-rated reverse voltage and high-temperature stress, critical for evaluating standby power loss in always-on automotive modules or high-reliability industrial controllers using the VX40120C-M3/P.
VX40120C-M3/P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 120 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 830 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 600 µA @ 120 V
- Operating Temperature - Junction:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
VX40120C-M3/P FAQ
1.How can I place an order for VX40120C-M3/P through Aetrix?
Please submit a Request for Quotation (RFQ) for VX40120C-M3/P 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 VX40120C-M3/P reliable?
The price and inventory of VX40120C-M3/P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VX40120C-M3/P is usually 5 days.
3.What payment methods are accepted for VX40120C-M3/P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VX40120C-M3/P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VX40120C-M3/P?
VX40120C-M3/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VX40120C-M3/P 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 VX40120C-M3/P?
For technical support, including VX40120C-M3/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VX40120C-M3/P requirements.
6.How does Aetrix verify that VX40120C-M3/P is sourced from the original manufacturer or authorized distributors?
All VX40120C-M3/P 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 VX40120C-M3/P meets industry standards.
7.What is the process for return or replacement of VX40120C-M3/P?
All VX40120C-M3/P units undergo pre-shipment inspection (PSI). If there is an issue with VX40120C-M3/P, 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 VX40120C-M3/P part is unused and in its original packaging.
Return procedure for VX40120C-M3/P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VX40120C-M3/P Tags
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