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Nexperia USA Inc. BAT54,235
- Part No.:
- BAT54,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAT54,235.pdf
- Description:
- DIODE SCHOTTKY 30V 200MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:47,134
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Product details
Overview
BAT54,235 from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, housed in an SOT23 (TO-236AB) surface-mount package. It delivers 30 V reverse voltage rating, 800 mV forward voltage at 100 mA, 2 µA reverse leakage at 25 V, 10 pF capacitance at 1 V, and 5 ns reverse recovery time - enabling ultra-high-speed switching in signal path protection circuits.
For engineers reviewing the BAT54,235 datasheet, BAT54,235 pinout, BAT54,235 application, or BAT54,235 equivalent, key selection criteria include low VF for power-sensitive clamping, minimal Cd for RF/line-termination integrity, fast trr for digital edge handling, and SOT23 footprint compatibility with high-density PCB layouts.
Technical Context
The BAT54,235 implements a single-planar Schottky junction with guard ring structure to suppress edge breakdown under transient stress. Its low-barrier metal-semiconductor interface enables sub-1 V conduction and near-zero minority-carrier storage.
Thermal design relies on FR4 PCB mounting with Rth(j-a) = 500 K/W; maximum junction temperature is limited to 150 °C. The device is rated for 200 mA DC forward current and 600 mA non-repetitive peak surge, supporting robust line-protection duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR | 30 V reverse voltage - defines maximum blocking capability before breakdown in clamping or polarity protection. |
| VF @ 100 mA | 800 mV - ensures minimal forward drop in low-voltage logic-level signal paths and battery-fed systems. |
| IR @ 25 V | 2 µA - enables reliable reverse isolation in high-impedance analog sensing and termination networks. |
| Cd @ 1 V | 10 pF - supports clean signal integrity up to ~1 GHz in RF matching and high-speed data line applications. |
| trr | 5 ns - allows use in >100 MHz digital switching, including USB 2.0 and LVDS receiver protection. |
| IF(max) | 200 mA continuous - suitable for sustained current in power rail clamping and ESD front-end stages. |
| Ptot | 250 mW at Tamb ≤ 25 °C - sets thermal derating boundary for compact SOT23 layout without heatsinking. |
Pinout & Package
Package: SOT23 (TO-236AB), 3-terminal surface-mount plastic package; dimensions 2.9 mm × 1.3 mm × 1.0 mm, 1.9 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connects to positive-side signal or supply in clamping and polarity protection. |
| 2 | Not Connected (n.c.) | Internally isolated terminal - must remain unconnected on PCB to avoid parasitic coupling or mechanical stress. |
| 3 | Cathode (K) | Forward current exit and reverse-blocking node; ties to ground or reference rail in most protection configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Suppresses edge-induced avalanche, improving reliability under repetitive voltage transients in line termination. |
| Low forward voltage | Typical VF ≤ 800 mV at 100 mA - reduces conduction loss and self-heating in battery-powered portable interfaces. |
| Ultra-low capacitance | 10 pF at 1 V reverse bias - preserves signal rise/fall times in high-speed serial links and RF antenna switches. |
| Fast reverse recovery | 5 ns trr - eliminates switching tail distortion in pulse-width modulated control feedback paths. |
| SOT23 standardization | Industry-standard footprint compatible with automated placement and reflow processes across global EMS providers. |
Applications
| USB 2.0 Data Line Protection | RS-485 Bus Termination |
|---|---|
Use Scenario: Bidirectional 480 Mbps differential signaling over unshielded twisted pair with ESD risk. IC Role / Device Role / Timing Role: Schottky clamp diode placed between D+ and D− lines and local ground to shunt ESD pulses while preserving signal edge fidelity. Use Value: 5 ns trr prevents data eye closure; 10 pF Cd avoids impedance mismatch at 240 MHz Nyquist frequency. |
Use Scenario: Differential bus termination in industrial automation nodes operating at 10 Mbps. IC Role / Device Role / Timing Role: Low-capacitance Schottky diode used in Thevenin-style termination network to stabilize common-mode voltage without loading signal edges. Use Value: 30 V VR withstands bus fault conditions; 2 µA IR ensures minimal DC offset drift over temperature. |
| Reverse Polarity Input Protection | Low-Voltage Logic-Level Clamping |
Use Scenario: 3.3 V microcontroller power input exposed to field wiring errors. IC Role / Device Role / Timing Role: Anode-to-input, cathode-to-ground configuration blocks reverse supply connection while passing forward current with minimal drop. Use Value: 800 mV VF limits voltage loss to <25% of nominal rail - critical for brown-out margin in battery-backed systems. |
Use Scenario: Protecting 1.8 V I/O pins of FPGA or ASIC against overvoltage during hot-plug events. IC Role / Device Role / Timing Role: Cathode-to-rail, anode-to-signal line configuration clamps excursions above VDD + VF without latch-up risk. Use Value: Guard ring structure sustains repeated 2 kV HBM ESD strikes without parameter shift or leakage degradation. |
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 NSR0230P2T5G | Lower VF (370 mV @ 100 mA), higher IR (10 µA @ 25 V), same SOT23-3 package. | Better for ultra-low-drop power path; less suitable for high-impedance analog clamping due to higher leakage. | Select when forward loss dominates system efficiency; verify IR impact on reference stability in precision circuits. |
| Diodes Incorporated BAV99,215 | Dual-series configuration (two diodes), VF = 1.25 V @ 100 mA, Cd = 2 pF, trr = 4 ns. | Offers dual-channel functionality but higher VF compromises low-voltage rail protection. | Choose only when dual-diode topology matches board layout; avoid where single-diode VF < 850 mV is required. |
Compared with NSR0230P2T5G and BAV99,215, the BAT54,235 provides optimal balance of low VF, low Cd, and low IR in a single-diode SOT23 - making it preferred for high-fidelity signal-line protection where all three parameters constrain design margins.
Availability
BAT54,235 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, RS-485 bus termination, and reverse-polarity input safeguarding requiring stable component supply across production lifecycles.
Supply support for BAT54,235 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 leading semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability discrete and logic devices for consumer, industrial, and automotive markets.
The BAT54 series belongs to Nexperia's general-purpose Schottky diode product line, engineered specifically for high-speed signal integrity and robust electrostatic discharge resilience in space-constrained SMT designs.
FAQ
Is BAT54,235 suitable for automotive applications?
No. BAT54,235 is not automotive-qualified per Nexperia's revision history (v.6, July 2022), which explicitly states the device changed to non-automotive qualification. Automotive-grade alternatives such as BAT54C-Q or BAT54SW-Q are available with AEC-Q101 qualification, extended temperature range, and enhanced PPAP documentation support.
What is the meaning of the '235' suffix in BAT54,235?
The '235' suffix denotes Nexperia's internal packaging and reel specification code: it identifies the device as supplied in 3,000-piece 8 mm tape-and-reel format with standard SOT23 carrier tape, per ordering table version BAT54/SOT23. This differs from BAT54/DG (GG% marking) and other variants with alternate packaging or moisture sensitivity levels.
Can Pin 2 (n.c.) be grounded or left floating on the PCB?
Pin 2 must remain unconnected - neither grounded nor tied to any net. The datasheet specifies it as "not connected" with no internal bond wire or die attachment. Connecting it risks mechanical stress on the leadframe, parasitic capacitance increase, or unintended current paths that degrade trr and Cd performance.
How does thermal resistance change with PCB copper area?
Rth(j-a) = 500 K/W assumes a standard FR4 PCB with single-sided 1 oz copper, tin-plated, and minimum solder land footprint. Increasing copper area (e.g., 2 oz copper + thermal vias) can reduce Rth(j-a) to ~200–300 K/W, enabling higher continuous IF at elevated ambient temperatures - verified via Nexperia's thermal simulation models and JEDEC JESD51-2 test conditions.
BAT54,235 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
- Operating Temperature - Junction:
- 150°C (Max)
BAT54,235 FAQ
1.How can I place an order for BAT54,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54,235 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 BAT54,235 reliable?
The price and inventory of BAT54,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54,235 is usually 5 days.
3.What payment methods are accepted for BAT54,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54,235?
BAT54,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54,235 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 BAT54,235?
For technical support, including BAT54,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54,235 requirements.
6.How does Aetrix verify that BAT54,235 is sourced from the original manufacturer or authorized distributors?
All BAT54,235 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 BAT54,235 meets industry standards.
7.What is the process for return or replacement of BAT54,235?
All BAT54,235 units undergo pre-shipment inspection (PSI). If there is an issue with BAT54,235, 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 BAT54,235 part is unused and in its original packaging.
Return procedure for BAT54,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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