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VS-50WQ04FNHM3 Vishay
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Manufacturer: Series:50WQ04
Package:TO-252-3
Category:Diodes & Rectifiers (Single Diodes)
RoHs Status:Lead free /RoHS Compliant
Datasheet:VS-50WQ04FNHM3 Datasheet (PDF)
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Overview
The Vishay VS-50WQ04FNHM3 is a high-performance, AEC-Q101 qualified Schottky rectifier designed for demanding automotive and high-efficiency power conversion applications. Housed in a compact, surface-mount D-PAK (TO-252-3) package, this device utilizes Schottky barrier technology to deliver a low forward voltage drop of just 510 mV at a forward current of 5.5 A. This low Vf characteristic significantly reduces conduction losses, enhancing overall system efficiency. With a repetitive reverse voltage (Vrrm) rating of 40 V and an impressive forward surge current (Ifsm) capability of 340 A, the 50WQ04FNHM3 provides robust performance and reliability in environments with high inrush currents. Its single dual anode configuration offers design flexibility, while the wide operating temperature range from -40°C to +150°C ensures stable operation under extreme conditions. This rectifier is an ideal solution for output rectification in DC-DC converters, freewheeling diodes, and polarity protection circuits where space is at a premium and thermal performance is critical.
Features
- Low Forward Voltage Drop: 510 mV at 5.5 A, minimizing power dissipation and improving efficiency in low-voltage circuits.
- High Surge Capability: 340 A peak forward surge current (Ifsm) ensures robust performance against high inrush current events.
- AEC-Q101 Qualified: Meets stringent automotive reliability standards, suitable for mission-critical and harsh environment applications.
- High-Temperature Operation: Maximum junction temperature of +150°C, providing stable performance under thermal stress.
- Surface-Mount Package: Compact TO-252-3 (D-PAK) design enables automated assembly and saves valuable PCB space.
Pin Configuration and Functions
- Pin 1: Anode (A) - Anode terminal for the first diode. Connect to the positive side of the circuit.
- Pin 2: Cathode (K) - Common cathode terminal for both diodes. Connect to the load or output.
- Pin 3: Anode (A) - Anode terminal for the second diode. Connect to the positive side of the circuit.
- Tab: Cathode (K) - The exposed metal tab is electrically connected to the cathode (Pin 2) and provides a primary thermal path to the PCB.
Typical Applications
- Automotive DC-DC Converters: Output rectification in 12V/24V automotive power systems.
- Freewheeling Diodes: Snubber and catch diode for inductive loads like relays and solenoids.
- Polarity Protection: Reverse battery protection in automotive and industrial electronics.
- Switching Power Supplies: Secondary-side rectification for low-voltage, high-frequency power supplies.
Equivalent / Alternative Parts
- VS-50WQ04FN-M3 (Vishay): Same electrical specifications and TO-252-3 package, non-AEC-Q101 version.
- MBR540S (Various): Similar 5A, 40V Schottky in TO-252 package; verify pinout and Vf characteristics for drop-in compatibility.
Design-in Tips
- Thermal Management: The exposed cathode tab is the primary heat path. Ensure a large copper area and thermal vias on the PCB to dissipate heat effectively, especially at high currents.
- Layout Considerations: Keep the anode and cathode traces short and wide to minimize parasitic inductance and resistance, which is critical for high-frequency switching applications.
- Snubber Circuit: For high-inductance loads, consider adding an RC snubber across the rectifier to suppress voltage spikes and reduce EMI.
Specifications
Type
Value
Type
Value
Product:
Schottky Rectifiers
Mounting Style:
SMD/SMT
Configuration:
Single Dual Anode
Technology:
Si
If - Forward Current:
5.5 A
Vrrm - Repetitive Reverse Voltage:
40 V
Vf - Forward Voltage:
510 mV
Ifsm - Forward Surge Current:
340 A
Ir - Reverse Current:
3 mA
Minimum Operating Temperature:
- 40 C
Maximum Operating Temperature:
+ 150 C
Qualification:
AEC-Q101
Factory Pack Quantity:
75
Unit Weight:
0.010582 oz
Series:
Pinout Description
Pin Configuration (TO-252-3 / DPAK / SC-63 Package):
This diode has 3 pins/pads, consisting of 2 leads + 1 thermal tab:
- Pin 1 (Anode 1 - A1):
- One of the anode terminals of the Schottky diode (if configured as dual anode).
- Electrically connected to the semiconductor junction.
-
For single-diode configuration, this is the primary anode.
-
Pin 2 (Cathode - K):
- The cathode terminal, common in both single and dual-anode configurations.
-
Connected to the N-type semiconductor material.
-
Tab (Thermal Pad / Pin 3):
- Electrically connected to the cathode (K) in most Schottky diodes of this type.
- Acts as a heat sink to dissipate power losses.
- Must be soldered to a PCB copper area for proper thermal management.
Key Notes:
- The DPAK (TO-252-3) package is designed for surface-mount (SMD) applications.
- The tab is critical for heat dissipation—ensure proper PCB thermal design.
- AEC-Q101 qualification ensures reliability for automotive applications.
- Pinout may vary slightly—always refer to the datasheet for exact connections.
Purchasing Guide
Q: What is the maximum DC current this diode can handle?
Q: Is this part suitable for automotive applications?
Q: What is the advantage of the low forward voltage of 510 mV?
Q: Can I use this for reverse polarity protection?
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If any items you receive are not of perfect quality, we will arrange a refund or replacement, provided the items remain in their original condition.
If your item significantly differs from our product description, you can either:
1) Return it for a full refund
2) Contact us to discuss after-sales solutions.
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