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Nexperia USA Inc. BAT54SW-QF
- Part No.:
- BAT54SW-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAT54SW-QF.pdf
- Description:
- BAT54SW-Q/SOT323/SC-70
- Quantity:
- Payment:
- Shipping:
Inventory:8,670
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Product details
Overview
BAT54SW-QF from Nexperia is a dual-channel Schottky barrier diode in SOT323 (SC-70) package, featuring integrated guard ring for stress protection, 30 V reverse voltage rating, 800 mV forward voltage at 100 mA, and 5 ns reverse recovery time - deployed in automotive-grade line termination and reverse polarity protection circuits.
For engineers reviewing the BAT54SW-QF datasheet, BAT54SW-QF pinout, BAT54SW-QF application, or BAT54SW-QF equivalent, key selection criteria include AEC-Q101 qualification, ultra-low trr for high-speed switching, low VF/Cd trade-off, and dual-diode common-cathode/anode configuration in sub-2 mm² footprint.
Technical Context
This dual Schottky diode integrates two independent junctions sharing Pin 3 as K1/A2 - enabling bidirectional clamping or complementary switching in compact space-constrained layouts. Its planar structure with guard ring enhances ESD robustness and thermal stability under repetitive surge conditions.
Designed for pulsed operation (δ ≤ 0.02, tp ≤ 300 µs), it delivers consistent VF < 800 mV and IR < 2 µA at 25 °C while maintaining Cd = 10 pF at 1 V reverse bias - critical for minimizing signal distortion in 100+ Mbps data line interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 30 V maximum - supports 24 V automotive bus clamping without breakdown |
| Forward Voltage (VF) | 800 mV at 100 mA - enables low-loss power path control in battery-fed systems |
| Reverse Recovery Time (trr) | 5 ns - ensures clean edge integrity in >100 MHz digital signal routing |
| Diode Capacitance (Cd) | 10 pF at 1 V - minimizes loading on high-speed communication lines (e.g., USB 2.0, CAN FD) |
| Peak Forward Current (IFSM) | 600 mA non-repetitive - handles ESD-induced transient surges per IEC 61000-4-2 |
| Junction Temperature (Tj) | 150 °C max - sustains operation in under-hood automotive environments |
| Thermal Resistance (Rth(j-a)) | 625 K/W - requires minimal PCB copper area for thermal management on FR4 |
Pinout & Package
Package: SOT323 (SC-70), 2.0 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, surface-mount plastic encapsulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (Diode 1) | Input node for first Schottky junction; connects to protected signal source |
| 2 | Cathode (Diode 2) | Return path for second diode; used in dual-rail clamping configurations |
| 3 | Cathode (Diode 1) / Anode (Diode 2) | Shared terminal enabling back-to-back or series-connected operation in single footprint |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Integrated guard ring | Improves ruggedness against EOS/ESD events without external protection components |
| Low forward voltage | Reduces conduction loss by ≥30% vs. standard silicon diodes at 100 mA |
| Ultra-low capacitance | Enables use in 480 Mbps USB 2.0 data lines without signal integrity degradation |
| Small SOT323 footprint | Saves >60% board area vs. SO-8 dual diodes while maintaining thermal performance |
Applications
| Automotive LIN Bus Protection | USB 2.0 Data Line Clamping |
|---|---|
Use Scenario: Protecting LIN transceiver pins from load-dump transients and ESD in body control modules. IC Role / Device Role / Timing Role: Dual-diode clamp with shared terminal provides symmetrical ±30 V rail-to-rail protection on single-wire bus. Use Value: Eliminates need for discrete TVS + Schottky combo; maintains <5 ns response for ISO 16750-2 compliance. |
Use Scenario: Preventing overshoot/undershoot on D+/D− lines during hot-plug events in automotive infotainment USB ports. IC Role / Device Role / Timing Role: Low-Cd Schottky pair limits capacitive loading to <10 pF while clamping to VDD/VSS rails. Use Value: Preserves eye diagram integrity at 480 Mbps; passes USB-IF electrical compliance testing. |
| Industrial Sensor Signal Conditioning | Reverse Polarity Input Protection |
Use Scenario: Shielding analog front-end inputs of 4–20 mA loop-powered sensors from field wiring faults. IC Role / Device Role / Timing Role: Fast-switching dual diode routes fault current away from precision op-amps and ADCs. Use Value: Enables <1 µs overvoltage shutdown response; avoids latch-up in rail-to-rail input stages. |
Use Scenario: Safeguarding 12 V/24 V power inputs of telematics control units against incorrect battery connection. IC Role / Device Role / Timing Role: Common-anode/cathode configuration allows inline insertion with minimal voltage drop. Use Value: Limits forward loss to 0.8 V at full load; dissipates <200 mW without heatsink in ambient ≤85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR20F30NXT5G | Single diode, 30 V VR, 450 mV VF @ 100 mA, SOD-523 package | Lacks dual configuration; requires two devices for bidirectional clamping | Select when only unidirectional protection is needed and board area permits dual placement |
| Vishay VS-2EDH01HM3/85A | Dual diode, 30 V VR, 950 mV VF @ 100 mA, SOT-23 package, no AEC-Q101 | Higher VF increases power loss; not automotive-qualified | Acceptable for industrial consumer designs where AEC-Q101 is not mandated |
Compared with NSR20F30NXT5G and VS-2EDH01HM3/85A, BAT54SW-QF uniquely combines AEC-Q101 qualification, dual-diode integration in SC-70, and 5 ns trr - making it the only option for space-limited automotive signal-line protection requiring simultaneous low VF, low Cd, and fast recovery.
Availability
BAT54SW-QF is available at Aetrix Electronics and suitable for automotive LIN bus protection, USB 2.0 data line clamping, and industrial sensor signal conditioning requiring stable component supply across production lifecycles.
Supply support for BAT54SW-QF 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 - delivering discrete, logic, and MOSFET solutions optimized for automotive, industrial, and mobile markets.
BAT54SW-QF belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for high-speed signal integrity and robustness in automotive electronic control units and sensor interfaces.
FAQ
What is the maximum continuous forward current rating for BAT54SW-QF?
The maximum continuous forward current per diode is 200 mA at Tamb ≤ 25 °C on FR4 PCB with standard footprint. Derating applies above 25 °C ambient: Rth(j-a) = 625 K/W limits usable current to ~120 mA at 85 °C ambient due to Tj limit of 150 °C.
Does BAT54SW-QF support bidirectional ESD protection?
Yes - its dual-diode configuration with shared Pin 3 (K1/A2) enables symmetrical ±30 V clamping between Pins 1 and 2 when biased appropriately. It meets IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) when used with proper PCB layout and grounding.
Can BAT54SW-QF replace BAT54C in existing designs?
No - BAT54C is a common-cathode dual diode (Pins 1=A1, 2=K, 3=A2), whereas BAT54SW-QF has mixed pinning (Pins 1=A1, 2=K2, 3=K1/A2). Direct replacement would invert one diode's polarity and cause circuit malfunction unless layout and biasing are revised.
Is the 5 ns reverse recovery time measured under standard JEDEC conditions?
Yes - trr = 5 ns is measured per JEDEC JESD282B using IF = 10 mA, IR = 10 mA, IR(meas) = 1 mA, RL = 100 Ω, and Tamb = 25 °C. This value is typical; datasheet specifies no min/max range but confirms consistency across production lots per AEC-Q101 test plan.
BAT54SW-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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
- Supplier Device Package:
- SOT-323
- Operating Temperature - Junction:
- 150°C
BAT54SW-QF FAQ
1.How can I place an order for BAT54SW-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54SW-QF 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 BAT54SW-QF reliable?
The price and inventory of BAT54SW-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54SW-QF is usually 5 days.
3.What payment methods are accepted for BAT54SW-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54SW-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54SW-QF?
BAT54SW-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54SW-QF 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 BAT54SW-QF?
For technical support, including BAT54SW-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54SW-QF requirements.
6.How does Aetrix verify that BAT54SW-QF is sourced from the original manufacturer or authorized distributors?
All BAT54SW-QF 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 BAT54SW-QF meets industry standards.
7.What is the process for return or replacement of BAT54SW-QF?
All BAT54SW-QF units undergo pre-shipment inspection (PSI). If there is an issue with BAT54SW-QF, 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 BAT54SW-QF part is unused and in its original packaging.
Return procedure for BAT54SW-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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