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Nexperia USA Inc. BAT54SW-QX
- Part No.:
- BAT54SW-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAT54SW-QX.pdf
- Description:
- DIODE ARR SCHOT 30V 200MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,970
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Product details
Overview
BAT54SW-QX from Nexperia is a dual common-cathode Schottky barrier diode in SOT323 (SC-70) package, featuring 30 V reverse voltage rating, 800 mV max forward voltage at 100 mA, 2 µA max reverse leakage at 25 V, 10 pF capacitance at 1 V, and 5 ns reverse recovery time - optimized for ultra-high-speed switching and reverse polarity protection in automotive power rails.
For engineers reviewing the BAT54SW-QX datasheet, BAT54SW-QX pinout, BAT54SW-QX application, or BAT54SW-QX equivalent, this device supports AEC-Q101-qualified designs requiring low-loss clamping, fast transient response, minimal parasitic capacitance, and dual-diode integration in space-constrained PCB layouts.
Technical Context
This dual Schottky diode integrates two independent junctions sharing a common cathode terminal (Pin 3), enabling compact dual-function implementation without external interconnects. Its planar structure with guard ring ensures robust ESD and surge immunity per AEC-Q101 stress testing protocols.
The device operates with junction temperatures up to 150 °C and delivers stable forward conduction down to 240 mV at 0.1 mA while maintaining sub-2 µA leakage at rated VR - critical for low-power automotive sensor interfaces and always-on supply monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 30 V - supports 24 V automotive systems with 25 % safety margin against load-dump transients |
| Forward Voltage (VF) | 800 mV @ 100 mA - minimizes conduction loss in reverse-polarity protection paths |
| Reverse Leakage (IR) | 2 µA @ 25 V - ensures negligible standby current in battery-backed circuits |
| Capacitance (Cd) | 10 pF @ 1 V - enables clean signal integrity in >100 MHz line termination applications |
| Reverse Recovery (trr) | 5 ns - allows reliable operation in 100+ MHz digital bus clamping and ESD snubbing |
| Thermal Resistance (Rth(j-a)) | 625 K/W - defines derating curve for 200 mW total dissipation on standard FR4 PCB |
| Junction Temperature (Tj) | 150 °C - validates continuous operation in under-hood automotive environments |
Pinout & Package
Encapsulated in SOT323 (SC-70), a 2.0 mm × 1.25 mm × 0.95 mm surface-mount plastic package with 1.3 mm lead pitch and tin-plated terminations compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (Diode 1) | Input node for first Schottky junction; connects to protected supply rail or signal line |
| 2 | Cathode (Diode 2) | Output node for second junction; ties to ground or reference plane in clamp configuration |
| 3 | Common Cathode/Anode (K1/A2) | Shared terminal enabling dual-diode topology - used for bidirectional clamping or dual-rail protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JS-001 |
| Guard ring integration | Prevents edge breakdown under high dv/dt stress - essential for CAN/LIN bus transient suppression |
| Low capacitance (10 pF) | Preserves signal rise/fall times in USB 2.0, I²C, and SPI data lines without added RC delay |
| Pulsed forward current rating | 600 mA non-repetitive peak - accommodates inrush current during hot-swap events in infotainment modules |
| Common-cathode dual configuration | Reduces component count vs. discrete diodes - saves 1.5 mm² board area in compact ECU designs |
Applications
| Automotive Power Rail Protection | High-Speed Data Line Clamping |
|---|---|
Use Scenario: Reverse battery connection in body control modules (BCM) and ADAS camera power supplies. IC Role / Device Role / Timing Role: Dual Schottky diode configured as back-to-back clamps on 12 V input rail. Use Value: Prevents damage from -14 V reverse polarity while adding <10 mΩ effective series resistance during normal operation. |
Use Scenario: ESD and overshoot suppression on LVDS or MIPI D-PHY differential pairs in display interfaces. IC Role / Device Role / Timing Role: Low-capacitance voltage clamp placed adjacent to connector entry points. Use Value: Limits transient excursions to <±1.2 V without distorting 800 Mbps signal eye diagrams. |
| USB Port Polarity Guard | Industrial Sensor Signal Conditioning |
Use Scenario: Polarity reversal protection for USB-C receptacles in telematics gateways. IC Role / Device Role / Timing Role: Common-cathode pair routing VBUS and CC lines to shared GND reference. Use Value: Enables safe hot-plug insertion regardless of cable orientation while maintaining <50 ns propagation delay. |
Use Scenario: Input protection for 4–20 mA loop-powered pressure sensors in engine bay harnesses. IC Role / Device Role / Timing Role: Bidirectional clamping diode across analog input pins referenced to local AGND. Use Value: Absorbs ±30 V transients without latch-up, preserving 16-bit ADC accuracy over full -40 to 125 °C range. |
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-anode dual-cathode topology; 30 V VR; 450 mV VF @ 10 mA; 15 pF Cd | Optimized for lower-current signal clamping rather than power rail protection | Select when prioritizing ultra-low VF at microamp bias over high-pulse current capability |
| Vishay SDM100S30 | SOT-23 package; 30 V VR; 850 mV VF @ 100 mA; 12 pF Cd; no AEC-Q101 certification | Lacks automotive qualification; higher thermal resistance (750 K/W) | Acceptable for industrial control boards where AEC compliance is not mandated |
Compared with BAT54SW-QX, NSR20F30NXT5G offers better low-current forward performance but lacks pulsed current headroom, while SDM100S30 trades qualification and thermal efficiency for broader distributor availability in non-automotive programs.
Availability
BAT54SW-QX is available at Aetrix Electronics and suitable for automotive power management, high-speed interface protection, and industrial sensor conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAT54SW-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 high-volume, high-reliability discrete and logic devices, with core R&D in Nijmegen, Netherlands, and manufacturing sites across Asia and Europe.
BAT54SW-QX belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for automotive subsystems demanding robust transient immunity, minimal forward loss, and proven field reliability in harsh environments.
FAQ
What is the maximum continuous forward current rating for BAT54SW-QX?
The BAT54SW-QX has a maximum continuous forward current (IF) of 200 mA per diode, defined at Tamb ≤ 25 °C with device mounted on an FR4 PCB using standard footprint. Derating is required above 25 °C ambient, following the 625 K/W junction-to-ambient thermal resistance curve.
Can BAT54SW-QX be used in place of a single Schottky diode?
Yes - either diode within the BAT54SW-QX can be used independently by connecting Pin 1 (A1) and Pin 3 (K1/A2) as anode-cathode pair, or Pin 2 (K2) and Pin 3 (K1/A2) as second anode-cathode pair. The unused terminal must remain unconnected or tied to appropriate potential per circuit function.
Is the SOT323 package compatible with automated optical inspection (AOI)?
Yes - the SOT323 package features coplanar, gull-wing leads with 1.3 mm pitch and clearly defined solder mask openings per Nexperia's recommended footprint (Fig. 6). Its 0.95 mm height and consistent marking ("44%") support reliable AOI detection of solder joint quality and placement offset.
Does BAT54SW-QX support bidirectional transient voltage suppression?
No - BAT54SW-QX is a unidirectional Schottky diode pair. For bidirectional TVS functionality, it must be combined with a complementary PNP/NPN transistor stage or paired with a dedicated bidirectional TVS like PESD5V0S1BA. Its inherent asymmetry limits clamping to forward-biased conduction only.
BAT54SW-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io) (per Diode):
- 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
- Operating Temperature - Junction:
- 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BAT54SW-QX FAQ
1.How can I place an order for BAT54SW-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54SW-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 BAT54SW-QX reliable?
The price and inventory of BAT54SW-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54SW-QX is usually 5 days.
3.What payment methods are accepted for BAT54SW-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54SW-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54SW-QX?
BAT54SW-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54SW-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 BAT54SW-QX?
For technical support, including BAT54SW-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54SW-QX requirements.
6.How does Aetrix verify that BAT54SW-QX is sourced from the original manufacturer or authorized distributors?
All BAT54SW-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 BAT54SW-QX meets industry standards.
7.What is the process for return or replacement of BAT54SW-QX?
All BAT54SW-QX units undergo pre-shipment inspection (PSI). If there is an issue with BAT54SW-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 BAT54SW-QX part is unused and in its original packaging.
Return procedure for BAT54SW-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54SW-QX 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
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