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Nexperia USA Inc. BAT54W,135
- Part No.:
- BAT54W,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAT54W,135.pdf
- Description:
- DIODE SCHOTTKY 30V 200MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:53,187
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Product details
Overview
BAT54W from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, housed in an SOT323 (SC-70) package. It delivers 30 V reverse voltage rating, 800 mV forward voltage at 100 mA, and ultrafast 5 ns reverse recovery time-enabling use in high-speed line termination and reverse polarity protection circuits.
For engineers reviewing the BAT54W datasheet, BAT54W pinout, BAT54W application, or BAT54W equivalent, key selection criteria include low capacitance (10 pF), low VF across 0.1–300 mA range, pulsed current capability up to 600 mA, and thermal resistance of 625 K/W on FR4 PCB.
Technical Context
The BAT54W implements a single Schottky junction optimized for low forward conduction loss and minimal charge storage. Its guard ring structure enhances ruggedness against transient overvoltage stress without compromising switching speed.
Designed for surface-mount operation in space-constrained layouts, it operates across –55 °C to 150 °C ambient and supports reflow and wave soldering per JEDEC standards. The n.c. (pin 2) terminal isolates internal die geometry and must remain unconnected in PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 30 V - Maximum blocking voltage before breakdown; defines safe operating range in clamping and polarity protection. |
| VF (Forward Voltage) | 800 mV @ 100 mA - Low conduction loss enables efficient power path control in battery-fed systems. |
| trr (Reverse Recovery Time) | 5 ns - Enables reliable operation in >100 MHz switching applications such as RF detector biasing. |
| Cd (Diode Capacitance) | 10 pF @ 1 V - Minimizes signal distortion in high-frequency line termination and ESD-coupled interfaces. |
| IR (Reverse Current) | 2 µA @ 25 V - Ensures low leakage in precision voltage reference and sensing paths. |
| Ptot (Power Dissipation) | 200 mW @ Tamb ≤ 25 °C - Limits thermal rise in compact SOT323 footprint without heatsinking. |
Pinout & Package
Encapsulated in SOT323 (SC-70), a 3-lead, 1.3 mm pitch, 2.0 × 1.25 × 0.95 mm surface-mount plastic package compliant with JEDEC MO-203AB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Primary current entry point; connects to positive supply or signal source in forward-biased configuration. |
| 2 | Not Connected (n.c.) | Internally isolated terminal; must be left floating-no PCB trace or pad connection permitted. |
| 3 | Cathode (K) | Current exit node; ties to ground or return path; polarity-sensitive for clamping and protection functions. |
Key Features
| Feature | Design Value |
|---|---|
| Guard Ring Integration | Enhances ESD and transient surge robustness without increasing VF or trr-critical for USB and I/O port protection. |
| Low Forward Voltage | 240 mV @ 0.1 mA to 800 mV @ 100 mA-reduces voltage drop in low-power sensor bias and logic-level translation. |
| Ultra-Low Capacitance | 10 pF @ 1 V-preserves signal integrity in 50 Ω RF lines and high-speed digital bus terminations. |
| Fast Switching Speed | 5 ns trr-supports clean edge transitions in pulse shaping, sampling gates, and synchronous rectification. |
Applications
| USB Port Protection | High-Speed Logic Termination |
|---|---|
Use Scenario: Protecting downstream USB 2.0 data lines from reverse insertion and hot-swap transients. IC Role / Device Role / Timing Role: Discrete Schottky diode used as polarity-reversal blocker and clamp on D+ and D− lines. Use Value: 30 V VR withstands VBUS coupling; 5 ns trr avoids data eye closure; 10 pF Cd prevents signal jitter. | Use Scenario: Terminating 50 Ω transmission lines in LVDS, PCIe, or DDR clock distribution networks. IC Role / Device Role / Timing Role: AC-coupled DC restoration diode providing precise bias point stabilization. Use Value: Low VF variation across temperature ensures stable termination voltage; 10 pF Cd avoids impedance mismatch. |
| RF Detector Biasing | Low-Power Sensor Supply Clamping |
Use Scenario: Providing bias current to GaAs FET detectors in 2.4 GHz ISM-band receivers. IC Role / Device Role / Timing Role: Low-leakage forward-biased diode supplying regulated gate bias under RF envelope detection. Use Value: 2 µA IR at 25 V minimizes detector offset drift; 5 ns trr prevents RF feedthrough into bias rail. | Use Scenario: Clamping supply rails of MEMS accelerometers and analog front-ends exposed to ESD events. IC Role / Device Role / Timing Role: Shunt-connected Schottky diode limiting voltage excursions to <0.8 V above rail during fast transients. Use Value: 800 mV VF ensures clamping threshold remains below IC absolute maximum ratings; guard ring sustains >8 kV HBM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR0230HT1G | Same SOT-23 package; 30 V VR, 480 mV VF @ 100 mA, 12 pF Cd, 5 ns trr. | Higher VF tolerance but larger Cd-less suitable for >100 MHz line matching. | Select when board layout uses SOT-23 footprint and lower VF is prioritized over capacitance. |
| Vishay VS-2EDH01HM3/85A | SOD-323 package; 30 V VR, 600 mV VF @ 100 mA, 8 pF Cd, 4 ns trr. | Smaller 1.7 × 1.3 mm body; tighter Cd spec-better for ultra-dense RF modules. | Select when minimizing parasitic capacitance is critical and SOD-323 mounting is acceptable. |
Compared with NSR0230HT1G and VS-2EDH01HM3/85A, the BAT54W offers balanced VF/Cd/trr performance in the industry-standard SOT323 footprint, with verified guard ring reliability for industrial-grade transient immunity.
Availability
BAT54W is available at Aetrix Electronics and suitable for USB port protection, high-speed logic termination, and low-power sensor supply clamping requiring stable component supply across automotive infotainment, industrial IoT gateways, and medical wearable designs.
Supply support for BAT54W 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, headquartered in Nijmegen, Netherlands.
The BAT54W belongs to Nexperia's Schottky diode product line, engineered for ultrafast switching and low-loss signal routing in portable, high-density, and high-frequency electronic systems.
FAQ
Is pin 2 of the BAT54W electrically connected internally?
No. Pin 2 is explicitly designated "n.c." (not connected) in the official Nexperia datasheet. It serves only as a mechanical anchor for the die attach and must remain unconnected in all PCB layouts. Routing traces to or placing solder paste on pin 2 risks shorting adjacent terminals or compromising thermal performance.
Can the BAT54W replace a standard silicon diode in reverse polarity protection?
Yes-its 30 V VR and 800 mV VF at 100 mA make it suitable for low-voltage reverse polarity protection (e.g., 3.3 V or 5 V rails), where lower forward drop reduces power loss and heat generation compared to 1N4148 or 1N400x series. However, its 2 µA IR at 25 V is higher than silicon equivalents, so verify leakage impact in ultra-low-power sleep modes.
What is the maximum continuous forward current for BAT54W at 85 °C ambient?
Per Nexperia's derating curve, the maximum continuous forward current drops to 140 mA at Tamb = 85 °C due to thermal resistance (625 K/W) and Ptot limit (200 mW). At that temperature, power dissipation must stay ≤140 mA × 0.8 V ≈ 112 mW to maintain junction temperature below 150 °C.
Does the BAT54W meet automotive AEC-Q200 requirements?
No. The October 2022 datasheet explicitly states this device is non-automotive qualified and superseded earlier automotive versions. For automotive applications, Nexperia recommends the BAT54W-Q variant (AEC-Q200 qualified), which undergoes additional stress testing and lot traceability-not the standard BAT54W,135.
BAT54W,135 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 (Max)
BAT54W,135 FAQ
1.How can I place an order for BAT54W,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54W,135 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 BAT54W,135 reliable?
The price and inventory of BAT54W,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54W,135 is usually 5 days.
3.What payment methods are accepted for BAT54W,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54W,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54W,135?
BAT54W,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54W,135 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 BAT54W,135?
For technical support, including BAT54W,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54W,135 requirements.
6.How does Aetrix verify that BAT54W,135 is sourced from the original manufacturer or authorized distributors?
All BAT54W,135 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 BAT54W,135 meets industry standards.
7.What is the process for return or replacement of BAT54W,135?
All BAT54W,135 units undergo pre-shipment inspection (PSI). If there is an issue with BAT54W,135, 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 BAT54W,135 part is unused and in its original packaging.
Return procedure for BAT54W,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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