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Vishay General Semiconductor - Diodes Division V20PW45HM3/I
- Part No.:
- V20PW45HM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
V20PW45HM3/I.pdf
- Description:
- DIODE SCHOTTKY 45V 20A SLIMDPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,513
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Product details
Overview
V20PW45HM3/I from Vishay General Semiconductor is a Trench MOS Barrier Schottky (TMBS®) rectifier in SlimDPAK (TO-252AE) package, rated for 45 V reverse voltage and 20 A average forward current, with ultra-low forward voltage of 0.31 V at 5 A and 125 °C - optimized for high-efficiency DC/DC converters and polarity protection in automotive and industrial power supplies.
For engineers reviewing the V20PW45HM3/I datasheet, V20PW45HM3/I pinout, V20PW45HM3/I application, or V20PW45HM3/I equivalent, key selection criteria include its AEC-Q101 qualification, 1.3 mm profile, MSL Level 1 rating, 0.46 V VF at 20 A/125 °C, and thermal resistance of 1.8 °C/W junction-to-mount - critical for compact, thermally constrained 12 V/24 V systems.
Technical Context
This device implements trench MOS Schottky technology to achieve lower forward voltage and higher current density than planar Schottky diodes, enabling reduced conduction losses in high-frequency switching topologies. Its single-diode configuration and TO-252AE thermal pad support direct PCB heatsinking.
The V20PW45HM3/I operates across -40 °C to +150 °C junction temperature, with 200 A non-repetitive surge capability and 3000 pF junction capacitance at 4 V - balancing low VF, fast recovery, and EMI control in synchronous rectification and freewheeling roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - supports 12 V and 24 V nominal bus systems with margin against transients |
| IF(AV) | 20 A - delivers continuous output current in compact DC/DC modules without forced air |
| VF @ 20 A / 125 °C | 0.46 V - reduces conduction loss to ≤9.2 W at full load, easing thermal design |
| RθJM | 1.8 °C/W - enables efficient heat transfer to copper pour or heatsink, critical for slim-profile designs |
| IFSM | 200 A - withstands inrush and short-circuit events in automotive power distribution |
| TJ max. | +150 °C - allows operation in under-hood or enclosed industrial environments |
| CJ @ 4 V | 3000 pF - limits displacement current during fast switching, reducing gate drive burden |
Pinout & Package
Package: SlimDPAK (TO-252AE), surface-mount, 3-terminal, with exposed thermal pad (Pin 2 = Cathode, Pin 3 = Anode, Pin 1 = Heatsink tab connected to cathode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Heatsink tab) | Cathode connection | Electrically tied to cathode; must be soldered to large copper area for thermal and electrical performance |
| Pin 2 (K) | Cathode | Main cathode terminal; low-inductance path for return current in high-frequency loops |
| Pin 3 (D) | Anode | Input/anode node; connects to switch node or input rail in buck/freewheeling configurations |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements |
| Ultra-low VF = 0.31 V @ 5 A / 125 °C | Reduces forward drop by ≥15 % vs. standard Schottky diodes, improving system efficiency |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly without moisture sensitivity concerns |
| 1.3 mm typical height | Enables use in space-constrained applications such as portable medical devices and thin industrial controllers |
| Halogen-free, RoHS-compliant | Meets global environmental compliance mandates without compromising thermal or electrical performance |
Applications
| Automotive DC/DC Converters | Industrial 24 V Power Supplies |
|---|---|
Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in ADAS ECUs. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter, handling 20 A continuous current. Use Value: 0.46 V VF at 125 °C minimizes power loss and thermal rise in sealed enclosures. | Use Scenario: Output rectification in DIN-rail mounted 24 V/15 A industrial SMPS. IC Role / Device Role / Timing Role: Primary output rectifier replacing conventional Schottky to improve efficiency. Use Value: RθJM = 1.8 °C/W enables direct thermal coupling to chassis, eliminating need for external heatsinks. |
| Polarity Protection Circuits | Low-Voltage Freewheeling |
Use Scenario: Reverse-voltage protection at input of 5 V/10 A USB-C PD power modules. IC Role / Device Role / Timing Role: Series-connected anode-to-load protection diode with minimal forward drop. Use Value: 0.31 V VF at 5 A/125 °C preserves >97 % input voltage under full load, extending runtime. | Use Scenario: Freewheeling path in 12 V brushed motor drivers with PWM frequencies >100 kHz. IC Role / Device Role / Timing Role: Fast-recovery path for inductive kickback during MOSFET off-time. Use Value: 3000 pF junction capacitance limits displacement current, reducing EMI and gate oscillation risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS2045C | Same 45 V / 20 A rating but TO-220AC package; VF = 0.52 V @ 20 A/25 °C; no AEC-Q101 | Requires through-hole mounting and external heatsink; unsuitable for automotive under-hood use | Select when board-level thermal management is flexible and AEC-Q101 is not required |
| ON Semi NRVB2045CT | TO-220AB dual common-cathode; VF = 0.54 V @ 20 A/25 °C; AEC-Q101 qualified but larger footprint | Supports dual-output or redundant paths; higher profile and thermal resistance limit high-density layouts | Choose for redundancy-critical systems where dual diodes justify added size and cost |
Compared with STPS2045C and NRVB2045CT, the V20PW45HM3/I offers superior thermal performance (RθJM = 1.8 °C/W), lower profile (1.3 mm), and verified AEC-Q101 qualification - making it optimal for space- and reliability-constrained automotive and industrial SMT power stages.
Availability
V20PW45HM3/I is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial 24 V power supplies, and polarity protection circuits requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for V20PW45HM3/I 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 diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on power efficiency and reliability.
The V20PW45HM3/I belongs to Vishay's TMBS® (Trench MOS Barrier Schottky) rectifier product line, engineered specifically for high-current, low-VF applications in automotive, industrial, and computing power systems.
FAQ
What is the maximum junction temperature rating for the V20PW45HM3/I?
The V20PW45HM3/I has a maximum operating junction temperature of +150 °C, validated per its AEC-Q101 qualification and thermal characterization. This rating allows reliable operation in under-hood automotive environments and sealed industrial enclosures where ambient temperatures exceed 85 °C. Derating curves in the datasheet confirm sustained 20 A current capability up to TJ = 131 °C with proper heatsinking.
Is the V20PW45HM3/I pin-compatible with standard TO-252 (DPAK) footprints?
Yes, the V20PW45HM3/I uses the SlimDPAK (TO-252AE) package, which maintains identical pin spacing and outline dimensions as standard TO-252 but with reduced height (1.3 mm vs. ~2.3 mm). PCB footprints designed for TO-252 are fully compatible, though thermal pad layout should follow Vishay's recommended copper area per Figure 7 to achieve specified RθJM = 1.8 °C/W.
Does the V20PW45HM3/I require a heatsink for 20 A continuous operation?
No external heatsink is required for the V20PW45HM3/I at 20 A if mounted on a properly sized PCB copper pour - its RθJM = 1.8 °C/W enables effective junction-to-board thermal transfer. With a 6 cm² copper pad on 70 μm FR4, thermal resistance drops to ~25 °C/W (junction-to-ambient), keeping TJ < 125 °C at 20 A and 25 °C ambient. Forced air or chassis mounting further improves margin.
What does the "HM3" suffix indicate in V20PW45HM3/I?
The "HM3" suffix in V20PW45HM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from the base "M3" version (halogen-free/RoHS but not AEC-Q101 tested). The "I" indicates tape-and-reel packaging (4500 units per 13″ reel), and the device marking code is "V20PW45" laser-etched on the top surface.
How does the V20PW45HM3/I compare to conventional Schottky rectifiers in terms of forward voltage?
The V20PW45HM3/I achieves VF = 0.31 V at 5 A and 125 °C - up to 20 % lower than typical planar Schottky diodes at the same conditions - due to its trench MOS barrier structure. At 20 A/125 °C, VF remains 0.46 V, significantly below industry-standard 0.55–0.65 V, directly translating to lower conduction losses and cooler operation in high-current DC/DC stages.
V20PW45HM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- eSMP®, TMBS®
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 610 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1.5 mA @ 45 V
- Capacitance @ Vr, F:
- 3000pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SlimDPAK
- Operating Temperature - Junction:
- -40°C ~ 150°C
V20PW45HM3/I FAQ
1.How can I place an order for V20PW45HM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for V20PW45HM3/I 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 V20PW45HM3/I reliable?
The price and inventory of V20PW45HM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for V20PW45HM3/I is usually 5 days.
3.What payment methods are accepted for V20PW45HM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for V20PW45HM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for V20PW45HM3/I?
V20PW45HM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your V20PW45HM3/I 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 V20PW45HM3/I?
For technical support, including V20PW45HM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your V20PW45HM3/I requirements.
6.How does Aetrix verify that V20PW45HM3/I is sourced from the original manufacturer or authorized distributors?
All V20PW45HM3/I 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 V20PW45HM3/I meets industry standards.
7.What is the process for return or replacement of V20PW45HM3/I?
All V20PW45HM3/I units undergo pre-shipment inspection (PSI). If there is an issue with V20PW45HM3/I, 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 V20PW45HM3/I part is unused and in its original packaging.
Return procedure for V20PW45HM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
V20PW45HM3/I Tags
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