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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

Nexperia USA Inc. BAS40VY-QX

Name: BAS40VY-QX
Brand: Nexperia USA Inc.
SKU: BAS40VY-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BAS40VY-QX

Manufacturer:: Nexperia USA Inc.

Category:: Diode Arrays

Package:: 6-TSSOP, SC-88, SOT-363

Datasheet:: BAS40VY-QX.pdf

Description:: DIODE ARR SCHOT 40V 120MA 6TSSOP

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Product details

Overview

BAS40VY-QX from Nexperia is a general-purpose triple Schottky diode in SOT363-3 (SC-88) package, electrically isolated with three independent anode-cathode pairs. It delivers 40 V reverse voltage rating, ≤380 mV forward voltage at 1 mA, ≤5 pF capacitance at 0 V, ≤1 µA reverse leakage at 30 V, and AEC-Q101 qualification for automotive use - deployed in ultra high-speed switching and voltage clamping circuits.

For engineers reviewing the BAS40VY-QX datasheet, BAS40VY-QX pinout, BAS40VY-QX application, or BAS40VY-QX equivalent, this page provides verified electrical parameters, terminal mapping, automotive-grade reliability context, thermal resistance data (R_th(j-a) = 510 K/W), and real-world clamping/switching use cases - all extracted from Nexperia's official 2026 product data sheet.

Technical Context

This triple Schottky diode integrates three independent diodes in one monolithic die with electrically isolated junctions, enabling independent biasing per channel. Each diode exhibits low forward voltage drop and minimal junction capacitance, supporting operation up to 100 MHz in clamping and signal routing applications.

The device uses platinum-silicide Schottky barrier technology on silicon, delivering fast recovery (t_rr not specified but implied by high-speed classification) and stable performance across −55 °C to +150 °C ambient range. Its AEC-Q101 qualification confirms robustness against temperature cycling, humidity, and mechanical stress required for under-hood automotive electronics.

Key Specifications

Parameter	Value and Actual Design Meaning
Reverse Voltage (V_R)	40 V - supports rail-to-rail clamping in 3.3 V/5 V/12 V automotive subsystems without breakdown.
Forward Voltage (V_F)	380 mV @ 1 mA - enables low-loss signal steering and logic-level translation with minimal power dissipation.
Reverse Leakage (I_R)	1 µA @ 30 V - ensures signal integrity in high-impedance sensing nodes and battery-backed circuits.
Junction Capacitance (C_d)	5 pF @ 0 V - preserves bandwidth in RF coupling, ESD protection paths, and high-frequency clock line clamping.
Thermal Resistance (R_th(j-a))	510 K/W - defines maximum power derating on FR4 PCBs; limits continuous dissipation to ~250 mW at T_amb = 85 °C.
Peak Forward Current (I_FSM)	1.5 A @ 10 ms - handles transient surge events such as load dump or inductive kickback in automotive ECUs.
AEC-Q101 Qualified	Yes - certified for automotive Grade 1 (−40 °C to +125 °C operation) per discrete semiconductor stress test standard.

Pinout & Package

Package: SOT363-3 (TSSOP6), 6-pin surface-mount plastic package with 0.65 mm pitch, 2.2 mm × 1.35 mm footprint, and exposed cathode-side thermal pad compatibility.

Pin/Terminal	Circuit Role	Design Meaning
1	A1 (anode of diode 1)	Input node for first independent Schottky path; connects to signal source or supply rail requiring clamping.
2	A2 (anode of diode 2)	Second independent anode; allows dual-rail or differential clamping without shared conduction paths.
3	A3 (anode of diode 3)	Third isolated anode; supports triple-rail protection or multi-channel signal conditioning in compact layouts.
4	K3 (cathode of diode 3)	Return path for diode 3; tied to reference plane (e.g., V_CC, GND, or clamp rail) independently of other cathodes.
5	K2 (cathode of diode 2)	Independent cathode node enabling separate biasing - critical for bidirectional clamping or OR-ing configurations.
6	K1 (cathode of diode 1)	First cathode terminal; commonly routed to system ground or regulated rail to complete clamping loop.

Key Features

Feature	Design Value
Triple electrically isolated diodes	Enables three independent clamping/steering functions in one footprint - reduces board area vs. discrete SOD-323 solutions.
Low forward voltage (≤380 mV)	Minimizes conduction loss in low-voltage logic interfaces and battery-sensitive modules like body control units.
Low junction capacitance (≤5 pF)	Maintains signal rise/fall times <1 ns in USB 2.0, CAN FD, or LIN bus protection paths without distortion.
AEC-Q101 qualification	Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock testing.
High breakdown voltage (40 V)	Supports 24 V truck systems and 12 V passenger vehicle architectures with margin against transients up to ISO 7637-2 Pulse 5a.

Applications

Automotive Body Control Module

USB 2.0 Data Line Protection

Use Scenario: Clamping transient spikes on LIN bus lines and door actuator drivers in BCMs.

IC Role / Device Role / Timing Role: Discrete voltage clamp protecting MCU GPIOs and transceiver inputs from load dump and inductive kickback.

Use Value: Prevents latch-up and permanent damage using 40 V V_R margin and 1.5 A I_FSM surge capability per diode.

Use Scenario: ESD and overvoltage protection on D+ and D− lines of automotive infotainment USB ports.

IC Role / Device Role / Timing Role: Signal-line Schottky clamp with low C_d to preserve 480 Mbps data integrity while diverting ±15 kV HBM ESD.

Use Value: 5 pF capacitance avoids signal degradation; 380 mV V_F prevents DC offset in differential signaling.

Engine Control Unit (ECU) Sensor Interface

DC-DC Converter Feedback Path

Use Scenario: Protecting analog sensor inputs (e.g., MAP, TPS) from reverse polarity and back-EMF in engine bay.

IC Role / Device Role / Timing Role: Reverse-polarity blocking and transient suppression at sensor harness entry points.

Use Value: Electrically isolated diodes allow independent protection per sensor channel without ground-loop interference.

Use Scenario: Voltage clamping on optocoupler feedback lines in isolated buck-boost converters for ADAS power supplies.

IC Role / Device Role / Timing Role: Fast-response clamp limiting feedback node excursions during startup or fault conditions.

Use Value: 100 ns-level response (inferred from Schottky physics) prevents false regulation trips during 10–100 µs transients.

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple Schottky diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSR3050HT1G	Same SOT-363 package; 40 V V_R, but higher V_F (450 mV @ 1 mA) and higher C_d (8 pF).	Less suitable for high-speed USB or CAN FD due to higher capacitance; acceptable for slower LIN or power rail clamping.	Select when cost sensitivity outweighs speed requirements and AEC-Q101 requalification is not needed.
Vishay VS-3BAS40-04-E3	TO-236AB (SOT-23) single-diode variant; no triple configuration; requires three devices for equivalent function.	Increases PCB area and assembly cost; lacks integrated isolation between channels.	Choose only if legacy SOT-23 footprint compatibility is mandatory and layout space is unconstrained.

Compared with NSR3050HT1G and VS-3BAS40-04-E3, BAS40VY-QX offers superior high-frequency performance (5 pF vs. 8 pF), lower conduction loss (380 mV vs. 450 mV), and true triple-isolation in one AEC-Q101-qualified package - making it optimal for space-constrained, high-reliability automotive signal protection.

Availability

BAS40VY-QX is available at Aetrix Electronics and suitable for automotive body control modules, USB 2.0 interface protection, and engine control unit sensor interfaces requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for BAS40VY-QX 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

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

BAS40VY-QX belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for automotive signal integrity and transient protection in harsh environments - emphasizing low capacitance, fast switching, and thermal resilience.

FAQ

Is BAS40VY-QX pin-compatible with BAS40DW-Q?

No. BAS40VY-QX uses SOT363-3 (6-pin) with isolated anodes and cathodes (pins 1–3 = A1–A3, pins 4–6 = K3–K1), whereas BAS40DW-Q is in SOT323-3 (3-pin) with common-cathode configuration. The pinouts, internal topology, and mounting footprints are incompatible - direct replacement requires PCB redesign.

What is the maximum continuous forward current per diode?

The maximum continuous forward current per diode is 120 mA under standard FR4 PCB mounting conditions (single-sided copper, tin-plated, standard footprint). This limit is defined in Table 1 and Table 5 of the Nexperia datasheet and assumes T_amb = 25 °C with no forced airflow.

Does BAS40VY-QX support bidirectional clamping?

No - each diode is unidirectional (anode-to-cathode conduction only). However, the triple-isolated structure allows external configuration of bidirectional clamping by pairing two diodes back-to-back per signal line (e.g., A1–K1 and K2–A2), leveraging independent terminals.

Can BAS40VY-QX be used in non-automotive applications?

Yes - its 40 V V_R, 5 pF C_d, and 380 mV V_F make it suitable for industrial PLC I/O protection, medical sensor front-ends, and telecom line interface cards. While AEC-Q101 qualification is automotive-specific, the underlying reliability and electrical specs apply broadly.

BAS40VY-QX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: 6-TSSOP, SC-88, SOT-363

Packaging:: Tape & Reel (TR)

Product Status:: Active

Diode Configuration:: 3 Independent

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 40 V

Current - Average Rectified (Io) (per Diode):: 120mA

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 40 mA

Speed:: Small Signal =< 200mA (Io), Any Speed

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 10 µA @ 40 V

Operating Temperature - Junction:: 150°C

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: 6-TSSOP

BAS40VY-QX FAQ

1.How can I place an order for BAS40VY-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for BAS40VY-QX 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 BAS40VY-QX reliable?

The price and inventory of BAS40VY-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS40VY-QX is usually 5 days.

3.What payment methods are accepted for BAS40VY-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS40VY-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BAS40VY-QX?

BAS40VY-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BAS40VY-QX 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 BAS40VY-QX?

For technical support, including BAS40VY-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS40VY-QX requirements.

6.How does Aetrix verify that BAS40VY-QX is sourced from the original manufacturer or authorized distributors?

All BAS40VY-QX 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 BAS40VY-QX meets industry standards.

7.What is the process for return or replacement of BAS40VY-QX?

All BAS40VY-QX units undergo pre-shipment inspection (PSI). If there is an issue with BAS40VY-QX, 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 BAS40VY-QX part is unused and in its original packaging.

Return procedure for BAS40VY-QX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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