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Nexperia USA Inc. BAT54QB-QZ
- Part No.:
- BAT54QB-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BAT54QB-QZ.pdf
- Description:
- DIODE SCHOT 30V 200MA DFN1110D-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
BAT54QB-Q from Nexperia is a planar Schottky barrier diode in a DFN1110D-3 (SOT8015) leadless SMD package, rated for 30 V reverse voltage, 800 mV forward voltage at 100 mA, and 5 ns reverse recovery time. It serves as an ultra-high-speed switching and clamping device in automotive power management and signal protection circuits.
For engineers reviewing the BAT54QB-Q datasheet, BAT54QB-Q pinout, BAT54QB-Q application, or BAT54QB-Q equivalent, this part offers AEC-Q101 qualification, side-wettable flanks for AOI-compatible solder joint inspection, low 0.48 mm profile, and verified 2 µA reverse leakage at 25 V - critical for compact, high-reliability automotive and portable electronics designs.
Technical Context
This Schottky diode leverages a planar junction structure to achieve low forward voltage drop and minimal reverse recovery time. Its 5 ns trr and 10 pF capacitance at 1 V support operation in >100 MHz switching and RF-coupled protection paths.
The DFN1110D-3 package integrates side-wettable flanks (SWF) on all three terminals, enabling automated optical inspection of solder fillets. Thermal resistance is 305 K/W (junction-to-ambient, FR4 PCB), with maximum junction temperature limited to 150 °C per AEC-Q101 stress testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 30 V - supports 24 V automotive rail clamping with 25 % margin |
| Forward Voltage (VF) | 800 mV @ 100 mA - minimizes conduction loss in low-voltage bias networks |
| Reverse Recovery Time (trr) | 5 ns - enables clean switching in >100 MHz signal routing and ESD clamp discharge paths |
| Diode Capacitance (Cd) | 10 pF @ 1 V, 1 MHz - preserves signal integrity in high-speed data line protection |
| Reverse Leakage (IR) | 2 µA @ 25 V - ensures low standby current in always-on automotive subsystems |
| Package | DFN1110D-3 (SOT8015) - 1.1 × 1.0 × 0.48 mm body with side-wettable flanks for AOI |
| AEC-Q101 Qualified | Yes - validated for automotive underhood and infotainment applications per discrete semiconductor standard |
Pinout & Package
Encapsulated in the DFN1110D-3 (SOT8015) ultra-thin leadless package: 1.1 mm × 1.0 mm × 0.48 mm body, 0.65 mm pitch, side-wettable flanks on all three terminals, 0.5 mm max package height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connects to higher-potential node in clamping or rectification path |
| 2 | Not Connected (n.c.) | Internally isolated terminal; no electrical function - must remain unconnected in layout |
| 3 | Cathode (K) | Forward current exit and reverse blocking terminal; ties to reference or return plane |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 800 mV @ 100 mA - reduces power dissipation in high-duty-cycle clamp circuits |
| Ultra-fast switching | 5 ns reverse recovery - prevents signal distortion in USB 2.0, CAN FD, and LIN bus protection |
| AOI-compatible packaging | Side-wettable flanks on all pins - enables automated visual verification of solder joint quality |
| Automotive qualification | AEC-Q101 compliant - qualified for under-hood ambient temperatures up to 150 °C |
| Miniaturized footprint | 1.1 mm × 1.0 mm area - saves board space in multi-rail DC-DC converter input/output stages |
Applications
| Automotive Infotainment Power Rails | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Clamping transient overvoltage on 5 V supply rails feeding head unit microcontrollers and display drivers. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between VBUS and GND, conducting only during ESD or load-dump events. Use Value: 30 V VR rating and 2 µA IR ensure stable rail hold-up during normal operation while triggering fast (<5 ns) clamping during 8 kV contact ESD. |
Use Scenario: Protecting differential D+/D− lines from IEC 61000-4-2 ESD pulses in automotive USB ports. IC Role / Device Role / Timing Role: Low-capacitance (10 pF) shunt diode connected between each data line and ground. Use Value: 10 pF capacitance avoids signal rise/fall time degradation; 5 ns trr ensures rapid discharge without data corruption. |
| Engine Control Unit (ECU) Sensor Bias Networks | Low-Power IoT Node Battery Protection |
Use Scenario: Isolating 5 V sensor bias supplies from shared MCU analog reference in harsh engine bay environments. IC Role / Device Role / Timing Role: Reverse-polarity and back-EMF protection diode in series with sensor excitation path. Use Value: 800 mV VF minimizes voltage drop across bias chain; AEC-Q101 qualification guarantees reliability at 125 °C ambient. |
Use Scenario: Preventing reverse current flow from Li-ion battery into discharged backup supercapacitor during power switchover. IC Role / Device Role / Timing Role: Low-leakage (2 µA) blocking diode in energy harvesting power path. Use Value: Ultra-low IR extends shelf life of battery-backed nodes; 0.48 mm height fits within tight 1.0 mm Z-height constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky barrier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR0230P2T5G | Same DFN0603-2 package (0.6 × 0.3 mm), but dual-anode single-cathode configuration; VF = 450 mV @ 100 mA | Lacks AEC-Q101 qualification; not recommended for automotive use | Select only for non-automotive consumer portables where size is primary constraint |
| Vishay VS-2EDH01HM3/85A | TO-277A package (3.1 × 1.7 × 0.9 mm); VF = 510 mV @ 1 A; trr = 12 ns; VR = 100 V | Higher VR and current rating, but 6× larger footprint and no SWF for AOI | Choose when system requires >30 V clamping or >200 mA continuous current, accepting manual inspection |
Compared with NSR0230P2T5G and VS-2EDH01HM3/85A, BAT54QB-Q uniquely balances AEC-Q101 compliance, 0.48 mm height, side-wettable flanks, and 5 ns trr - making it the only option qualified for automated, space-constrained automotive signal and power rail protection.
Availability
BAT54QB-Q is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C port protection circuits, and engine control unit (ECU) sensor interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAT54QB-Q 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 high-volume, high-reliability essential semiconductors - including logic, discretes, MOSFETs, and ESD protection devices.
The BAT54QB-Q belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive signal integrity and power rail protection where miniaturization, thermal robustness, and automated assembly compatibility are mandatory.
FAQ
Is BAT54QB-Q suitable for bidirectional ESD protection?
No - BAT54QB-Q is a single Schottky diode with anode and cathode terminals; it provides unidirectional clamping only. For bidirectional ESD protection, a dual-diode array (e.g., BAT54C-Q) or dedicated TVS array is required. Its 30 V VR rating and 2 µA IR are specified for forward-biased conduction and reverse-blocking operation, not symmetrical breakdown.
What is the maximum allowable reflow peak temperature for BAT54QB-Q?
The DFN1110D-3 package is rated for JEDEC J-STD-020 moisture sensitivity level 1, with a maximum reflow peak temperature of 260 °C for ≤30 seconds. The package outline drawing specifies 0.48 mm body height and side-wettable flanks optimized for standard lead-free reflow profiles, and the datasheet confirms compatibility with IPC/JEDEC J-STD-020D.2.
Can BAT54QB-Q replace BAT54C-Q in a dual-diode configuration?
No - BAT54C-Q integrates two independent Schottky diodes in one SOT323 package (anode-cathode/anode-cathode), whereas BAT54QB-Q is a single-diode device in DFN1110D-3 with one n.c. pin. Substitution would require PCB redesign to accommodate separate placement of two BAT54QB-Q units and verify spacing, thermal coupling, and layout symmetry for balanced performance.
Does the 'B' in BAT54QB-Q indicate a specific revision or process variant?
Yes - the 'B' denotes Nexperia's second-generation process revision for the BAT54 series, delivering improved consistency in VF distribution and tighter trr control versus the original BAT54Q. This revision was introduced in Q1 2021 and confirmed in the May 2021 datasheet revision v.2, which added AEC-Q101 qualification language and updated thermal characterization data.
BAT54QB-QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 25 V
- Capacitance @ Vr, F:
- 10pF @ 1V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1110D-3
- Operating Temperature - Junction:
- 150°C
BAT54QB-QZ FAQ
1.How can I place an order for BAT54QB-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54QB-QZ 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 BAT54QB-QZ reliable?
The price and inventory of BAT54QB-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54QB-QZ is usually 5 days.
3.What payment methods are accepted for BAT54QB-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54QB-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54QB-QZ?
BAT54QB-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54QB-QZ 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 BAT54QB-QZ?
For technical support, including BAT54QB-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54QB-QZ requirements.
6.How does Aetrix verify that BAT54QB-QZ is sourced from the original manufacturer or authorized distributors?
All BAT54QB-QZ 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 BAT54QB-QZ meets industry standards.
7.What is the process for return or replacement of BAT54QB-QZ?
All BAT54QB-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BAT54QB-QZ, 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 BAT54QB-QZ part is unused and in its original packaging.
Return procedure for BAT54QB-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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