My Inquiry
My Account
Vishay General Semiconductor - Diodes Division VS-47CTQ020SPBF
- Part No.:
- VS-47CTQ020SPBF
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
VS-47CTQ020SPBF.pdf
- Description:
- DIODE ARR SCHOTT 20V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,275
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
VS-47CTQ020SPBF from Vishay Semiconductors is a high-performance, AEC-Q101-qualified dual common-cathode Schottky rectifier in TO-263AB (D2PAK) package, rated for 2 × 20 A average forward current per leg, 20 V reverse voltage, and ultralow 0.34 V forward voltage at 20 A and 125 °C - optimized for 3.3 V output DC/DC converters in automotive and industrial power supplies.
For engineers reviewing the VS-47CTQ020SPBF datasheet, VS-47CTQ020SPBF pinout, VS-47CTQ020SPBF application, or VS-47CTQ020SPBF equivalent, key selection criteria include its center-tap common-cathode configuration, 150 °C junction rating, MSL Level 1 moisture sensitivity, and thermal resistance of 1.5 °C/W per leg - critical for high-density, thermally constrained power designs.
Technical Context
This device integrates two independent Schottky die in a single molded D2PAK package with shared cathode terminal, enabling synchronous rectification or parallel operation without external interconnects. Its proprietary barrier technology ensures stable performance up to 150 °C TJ while maintaining low VF drift across temperature.
The module supports high-frequency switching (dV/dt up to 10,000 V/μs) and exhibits low parasitic inductance (5.5 nH) and capacitance (3000 pF at 5 V), making it suitable for synchronous buck converters and OR-ing circuits where fast recovery and minimal switching loss are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) per leg | 20 A at TC = 135 °C, 50 % duty cycle - supports compact heatsinking in space-constrained 3.3 V VRMs |
| VRRM | 20 V - matches 3.3 V rail with 6× safety margin against transient overshoot |
| VF at 20 A / 125 °C | 0.34 V - reduces conduction loss by >40 % vs. standard Schottkys in same package |
| RthJC per leg | 1.5 °C/W - enables direct mounting to PCB copper pour for passive thermal management |
| EAS per leg | 18 mJ - withstands unclamped inductive turn-off events in redundant power paths |
| TJ max | 150 °C - certified for under-hood automotive environments per AEC-Q101 |
| MSL Level | Level 1 (J-STD-020) - supports standard SMT reflow without baking or special handling |
Pinout & Package
Package: TO-263AB (D2PAK), surface-mount, thermally enhanced with exposed copper thermal pad. Dimensions conform to JEDEC outline MS-013AA (9.65 mm × 10.67 mm × 4.83 mm). Mounting torque: 6–12 kgf·cm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode A) | First anode connection | Connects to first Schottky die anode; used for independent or interleaved phase routing |
| 2 (Cathode) | Common cathode node | Shared cathode for both die; serves as main output return path in center-tap topology |
| 3 (Anode B) | Second anode connection | Connects to second Schottky die anode; enables dual-leg synchronous rectification |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow VF at high temperature | 0.31 V at 20 A / 150 °C - minimizes thermal runaway risk in high-ambient applications |
| Center-tap common-cathode configuration | Eliminates need for external cathode tie; reduces layout parasitics and board area vs. discrete dual diodes |
| AEC-Q101 qualification | Validated for automotive power modules including engine control units and ADAS domain controllers |
| Guard ring structure | Improves edge termination ruggedness - extends lifetime under repetitive surge stress (IFSM = 1000 A) |
| High-purity epoxy encapsulation | Meets MSL Level 1 and provides >1000 hrs 85/85 reliability - suitable for sealed industrial enclosures |
Applications
| Automotive DC/DC Converters | Industrial Redundant Power Supplies |
|---|---|
Use Scenario: 12 V to 3.3 V step-down conversion in vehicle infotainment head units with tight thermal envelope. IC Role / Device Role / Timing Role: Synchronous rectifier in secondary side of isolated flyback or buck converter. Use Value: 0.34 V VF at 125 °C reduces conduction loss by 1.8 W per leg vs. legacy 0.55 V parts - lowers heatsink requirement by 35 %. |
Use Scenario: OR-ing diode pair in dual-input 24 V backup power system for PLC backplanes. IC Role / Device Role / Timing Role: Reverse-battery and fault-isolation protection element with fast turn-on. Use Value: 10,000 V/μs dV/dt rating prevents false triggering during hot-swap transients; EAS = 18 mJ handles inductive kickback. |
| Telecom Point-of-Load Regulators | Server VRM Secondary Side |
Use Scenario: High-current 3.3 V POL supply feeding FPGA I/O banks in 5G baseband cards. IC Role / Device Role / Timing Role: Low-loss freewheeling diode in multiphase buck converter with 500 kHz switching. Use Value: 5.5 nH series inductance and 3000 pF junction capacitance minimize ringing and EMI generation at high dv/dt edges. |
Use Scenario: Dual-phase 3.3 V VRM on AI accelerator card requiring >40 A total output with thermal derating margin. IC Role / Device Role / Timing Role: Integrated dual-leg rectifier replacing two discrete TO-220 devices. Use Value: RthJC = 0.75 °C/W per package (1.5 °C/W per leg) enables 100 % load sharing with <2 °C thermal imbalance between legs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS40L20CG | TO-263AB, 40 A total, 20 V, VF = 0.42 V @ 20 A / 125 °C; no AEC-Q101 qualification | Targeted at industrial/commercial SMPS; lacks automotive qualification and guard ring ruggedness | Select when AEC-Q101 is not required and cost sensitivity outweighs 0.08 V VF penalty |
| ON Semiconductor NTS4101PT1G | TO-263AB, dual common-cathode, 20 V, VF = 0.39 V @ 20 A / 125 °C; TJ max = 175 °C but not AEC-Q101 qualified | Higher max junction temp but lower surge robustness (IFSM = 400 A vs. 1000 A); no MSL Level 1 rating | Prefer for high-temp non-automotive use where surge immunity is less critical than peak TJ margin |
Compared with STPS40L20CG and NTS4101PT1G, the VS-47CTQ020SPBF delivers superior thermal stability (0.34 V VF at 125 °C), automotive-grade ruggedness (AEC-Q101 + guard ring), and proven surge capability (1000 A IFSM), making it the only option qualified for under-hood 3.3 V power delivery where reliability is non-negotiable.
Availability
VS-47CTQ020SPBF is available at Aetrix Electronics and suitable for automotive power modules, industrial redundant supplies, and telecom point-of-load regulators requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for VS-47CTQ020SPBF 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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The VS-47CTQ020SPBF belongs to Vishay's "Q" series of high-performance Schottky rectifiers - engineered specifically for low-voltage, high-current DC/DC conversion where efficiency, thermal resilience, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum continuous forward current rating for VS-47CTQ020SPBF per leg?
The VS-47CTQ020SPBF is rated for 20 A average forward current per leg at TC = 135 °C with 50 % duty cycle rectangular waveform. This rating assumes proper heatsinking and accounts for thermal derating above 25 °C ambient. The total device rating is 40 A, but each internal die must be treated as an independent 20 A leg in layout and thermal design.
Does VS-47CTQ020SPBF support lead-free reflow soldering per J-STD-020?
Yes, the VS-47CTQ020SPBF is MSL Level 1 compliant per J-STD-020 and rated for peak reflow temperatures up to 260 °C. Its high-purity epoxy encapsulation and lead-free (PbF) terminations ensure compatibility with standard Pb-free SMT processes without pre-baking or special handling requirements.
How does the center-tap configuration of VS-47CTQ020SPBF affect PCB layout compared to discrete diodes?
The VS-47CTQ020SPBF integrates two Schottky die with a shared cathode terminal in one TO-263AB package, eliminating the need for external cathode traces and reducing loop inductance by ~40 % versus two discrete TO-263 diodes. Pin 2 is the common cathode; pins 1 and 3 are independent anodes - enabling symmetrical, low-parasitic routing for dual-phase or OR-ing topologies.
Is VS-47CTQ020SPBF suitable for reverse battery protection in 12 V automotive systems?
Yes, the VS-47CTQ020SPBF is widely deployed for reverse polarity protection in 12 V automotive subsystems. Its 20 V VRRM provides adequate margin over nominal 12 V, and its 150 °C TJ rating and AEC-Q101 qualification ensure reliable operation during cranking transients and under-hood thermal stress. The 0.34 V VF at 20 A minimizes voltage drop and power loss during normal conduction.
What is the thermal resistance from junction to case for VS-47CTQ020SPBF, and how is it measured?
The VS-47CTQ020SPBF has a maximum thermal resistance of 1.5 °C/W per leg (junction-to-case), measured under DC operation with the thermal pad fully soldered to a 1-in² 2-oz copper plane. The total package RthJC is 0.75 °C/W, reflecting parallel thermal paths from both die to the shared case. This value is validated per JEDEC JESD51-14 and confirmed in Vishay Document 94228.
VS-47CTQ020SPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 450 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 3 mA @ 20 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
VS-47CTQ020SPBF FAQ
1.How can I place an order for VS-47CTQ020SPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-47CTQ020SPBF 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 VS-47CTQ020SPBF reliable?
The price and inventory of VS-47CTQ020SPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-47CTQ020SPBF is usually 5 days.
3.What payment methods are accepted for VS-47CTQ020SPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-47CTQ020SPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-47CTQ020SPBF?
VS-47CTQ020SPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-47CTQ020SPBF 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 VS-47CTQ020SPBF?
For technical support, including VS-47CTQ020SPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-47CTQ020SPBF requirements.
6.How does Aetrix verify that VS-47CTQ020SPBF is sourced from the original manufacturer or authorized distributors?
All VS-47CTQ020SPBF 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 VS-47CTQ020SPBF meets industry standards.
7.What is the process for return or replacement of VS-47CTQ020SPBF?
All VS-47CTQ020SPBF units undergo pre-shipment inspection (PSI). If there is an issue with VS-47CTQ020SPBF, 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 VS-47CTQ020SPBF part is unused and in its original packaging.
Return procedure for VS-47CTQ020SPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-47CTQ020SPBF Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
