My Inquiry
My Account
Vishay General Semiconductor - Diodes Division VS-30BQ040PBF
- Part No.:
- VS-30BQ040PBF
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
VS-30BQ040PBF.pdf
- Description:
- DIODE SCHOTTKY 40V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,729
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
VS-30BQ040PBF from Vishay is a surface-mount Schottky rectifier optimized for low forward voltage drop (0.43 V at 3.0 A, 125 °C), 40 V reverse voltage rating, and 3.0 A average forward current handling-designed for high-frequency switching power supplies, battery charging circuits, and reverse polarity protection in industrial embedded systems.
For engineers reviewing the VS-30BQ040PBF datasheet, VS-30BQ040PBF pinout, VS-30BQ040PBF application, or VS-30BQ040PBF equivalent, key selection criteria include its SMC package thermal resistance (12 °C/W junction-to-lead), 2000 A non-repetitive surge capability, MSL Level 1 moisture sensitivity, and RoHS-compliant lead-free construction.
Technical Context
This Schottky rectifier uses a planar epitaxial structure with guard ring termination to enhance ruggedness and long-term reliability under repetitive avalanche stress (1.0 A IAR, 6.0 mJ EAS). Its low series inductance (3.0 nH) and fast dV/dt rating (10,000 V/μs) support stable operation in high-speed DC-DC converters and synchronous rectification topologies.
The device operates across -55 °C to +150 °C junction temperature range and achieves 0.53 V forward drop at 3 A and 25 °C-enabling reduced conduction losses versus standard PN diodes in 12 V and 24 V input power stages where thermal management is constrained by PCB area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 3.0 A average forward current at TL = 118 °C - supports continuous operation in compact SMC-packaged power rails without forced air cooling |
| VRRM / VR | 40 V maximum repetitive/DC reverse voltage - suitable for 36 V nominal bus systems with safety margin |
| VF @ 3 A, 125 °C | 0.43 V - reduces power loss to ~1.29 W per diode in high-temp environments, easing thermal design |
| IFSM | 2000 A peak surge (5 μs sine) - withstands inrush currents in hot-plug and capacitor-charging applications |
| RthJL | 12 °C/W junction-to-lead - enables efficient heat transfer to PCB copper when mounted on 1" square pad |
| CT @ 5 V | 230 pF junction capacitance - minimizes switching losses and EMI in >100 kHz SMPS designs |
| MSL Level | Level 1 per J-STD-020 - allows unlimited floor life and standard reflow without baking |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, single-anode/single-cathode configuration. Marking: "V3F". Dimensions: 7.11 × 6.22 × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal | Connected to input/source side of rectification path; must be routed with low-inductance trace for high-dI/dt stability |
| Cathode | Current exit terminal | Connected to output/load side; serves as reference node for voltage clamping and freewheeling paths |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring termination | Improves edge breakdown immunity and extends operational lifetime under repeated transient overstress |
| Low VF at high temperature | Maintains <0.45 V drop at 125 °C - critical for efficiency retention in sealed enclosures or high-ambient environments |
| MSL Level 1 rating | Eliminates pre-reflow baking requirement and supports standard automated assembly processes |
| RoHS-compliant Pb-free finish | Meets Directive 2011/65/EU and JEDEC JS709A halogen-free requirements for green manufacturing |
| High dV/dt capability | 10,000 V/μs rating prevents false turn-on during fast-switching transients in half-bridge or LLC resonant converters |
Applications
| Disk Drive Power Regulation | Industrial DC-DC Converter |
|---|---|
Use Scenario: Regulating +5 V and +12 V rails in enterprise HDD head actuator and spindle motor control boards. IC Role / Device Role / Timing Role: Freewheeling diode in buck-derived auxiliary regulators; reverse-battery protection at main power input. Use Value: 0.43 V VF at 125 °C reduces thermal load on densely packed PCBs, enabling higher power density without derating. | Use Scenario: Output rectification in isolated 48 V–12 V telecom DC-DC modules operating at 250 kHz. IC Role / Device Role / Timing Role: Secondary-side Schottky rectifier replacing synchronous MOSFETs where gate drive complexity must be minimized. Use Value: 230 pF CT and 3.0 nH LS minimize ringing and EMI, simplifying filter design and passing CISPR-32 Class B limits. |
| Battery Charging Circuit | Reverse Polarity Protection |
Use Scenario: OR-ing diode in dual-input Li-ion charger for portable medical devices with USB and barrel-jack inputs. IC Role / Device Role / Timing Role: Unidirectional current path selector preventing backfeed between sources while minimizing insertion loss. Use Value: 0.53 V VF at 25 °C ensures >94 % efficiency at 2 A charge current, extending runtime and reducing heat sink size. | Use Scenario: Input protection for 24 V PLC I/O modules exposed to field wiring errors. IC Role / Device Role / Timing Role: Series-connected blocking diode placed before bulk capacitance to prevent damage during accidental reverse connection. Use Value: 2000 A IFSM rating survives 100 ms reverse-connection events without degradation, ensuring field-reliability compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor SB340 | Same SMC package, 40 V VR, but higher VF (0.55 V @ 3 A, 25 °C); RthJA 46 °C/W vs. VS-30BQ040PBF's 12 °C/W junction-to-lead | Limited to lower ambient or forced-air-cooled designs due to inferior thermal path | Select when cost sensitivity outweighs thermal performance; verify TJ rise under full load |
| Diodes Incorporated SB340-E3/57T | Identical electrical ratings but MSL Level 3 (requires baking); no guard ring; 250 pF CT vs. 230 pF | Not recommended for high-reliability industrial use without process validation | Acceptable for consumer-grade power adapters where moisture sensitivity and long-term ruggedness are secondary |
Compared with SB340 and SB340-E3/57T, the VS-30BQ040PBF delivers superior thermal performance via its 12 °C/W RthJL, enhanced reliability through guard ring design, and ready-to-reflow MSL Level 1 qualification-making it preferred for mission-critical industrial and telecom power stages.
Availability
VS-30BQ040PBF is available at Aetrix Electronics and suitable for switching power supplies, battery charging systems, and reverse polarity protection circuits requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production batches.
Supply support for VS-30BQ040PBF 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 semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in power rectification and high-reliability packaging technologies.
The VS-30BQ040PBF belongs to Vishay High Power Products' Schottky rectifier family, engineered for industrial-grade power conversion where low VF, robust surge tolerance, and MSL-compliant manufacturability are mandatory.
FAQ
What is the maximum junction temperature rating for the VS-30BQ040PBF?
The VS-30BQ040PBF has a maximum junction temperature (TJ) rating of +150 °C and a minimum of -55 °C. This wide operating range allows deployment in harsh industrial environments such as factory automation controllers and outdoor telecom equipment. The device maintains specified electrical performance-including 0.43 V forward voltage at 3.0 A-up to this upper limit, provided thermal design respects the 12 °C/W RthJL specification.
Does the VS-30BQ040PBF support lead-free reflow soldering?
Yes, the VS-30BQ040PBF is RoHS-compliant and Pb-free (PbF suffix), qualified for standard lead-free reflow profiles with peak temperatures up to 260 °C. It meets MSL Level 1 per J-STD-020, meaning it can be stored indefinitely at room humidity and placed directly into reflow ovens without preconditioning or baking-reducing manufacturing overhead and eliminating moisture-related delamination risk.
How does the guard ring in the VS-30BQ040PBF improve reliability?
The guard ring in the VS-30BQ040PBF enhances edge termination robustness, suppressing premature avalanche breakdown at the silicon periphery during voltage transients. This design feature directly contributes to long-term reliability in applications with repetitive surge stress-such as freewheeling in motor drives-and is validated by the device's 6.0 mJ non-repetitive avalanche energy (EAS) rating and 1.0 A repetitive avalanche current (IAR) capability.
Can the VS-30BQ040PBF replace a standard PN rectifier in an existing 40 V design?
Yes, the VS-30BQ040PBF can directly replace a PN rectifier rated for ≤40 V and ≤3.0 A average current, delivering immediate system-level benefits: lower forward voltage (0.43 V vs. typical 0.9–1.1 V), faster recovery (no minority-carrier storage), and reduced switching losses. However, verify reverse leakage (30 mA at 125 °C) and layout parasitics, as Schottky behavior differs fundamentally from PN junctions.
What is the marking code printed on the VS-30BQ040PBF package?
Each VS-30BQ040PBF device is laser-marked with "V3F" on the cathode band side of the SMC package. This marking aligns with Vishay's standard part identification scheme for the BQ-series Schottky rectifiers and is visible under 10× magnification. The marking is used for traceability, counterfeit detection, and alignment verification during automated optical inspection (AOI) in SMT lines.
VS-30BQ040PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 530 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
VS-30BQ040PBF FAQ
1.How can I place an order for VS-30BQ040PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-30BQ040PBF 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-30BQ040PBF reliable?
The price and inventory of VS-30BQ040PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-30BQ040PBF is usually 5 days.
3.What payment methods are accepted for VS-30BQ040PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-30BQ040PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-30BQ040PBF?
VS-30BQ040PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-30BQ040PBF 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-30BQ040PBF?
For technical support, including VS-30BQ040PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-30BQ040PBF requirements.
6.How does Aetrix verify that VS-30BQ040PBF is sourced from the original manufacturer or authorized distributors?
All VS-30BQ040PBF 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-30BQ040PBF meets industry standards.
7.What is the process for return or replacement of VS-30BQ040PBF?
All VS-30BQ040PBF units undergo pre-shipment inspection (PSI). If there is an issue with VS-30BQ040PBF, 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-30BQ040PBF part is unused and in its original packaging.
Return procedure for VS-30BQ040PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-30BQ040PBF Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
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 …
