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Nexperia USA Inc. BAT720,235
- Part No.:
- BAT720,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAT720,235.pdf
- Description:
- DIODE SCHOTTKY 40V 500MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,700
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Product details
Overview
BAT720,235 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 40 V reverse voltage rating, ≤550 mV forward voltage at 500 mA pulsed, ≤100 µA reverse leakage at 35 V, 60–90 pF capacitance at 0 V, and supports ultra-high-speed switching in power rail clamping circuits.
For engineers reviewing the BAT720,235 datasheet, BAT720,235 pinout, BAT720,235 application, or BAT720,235 equivalent, key selection criteria include low VF for efficiency-critical 3.3 V/5 V rail clamping, low Cd for high-frequency line termination, and SOT23 footprint compatibility in space-constrained USB or I²C interface protection designs.
Technical Context
The BAT720,235 uses a planar Schottky junction architecture with an integrated guard ring to suppress edge breakdown under transient stress. Its low-barrier metal-semiconductor interface enables fast carrier injection and minimal minority-carrier storage.
Thermal resistance is 500 K/W (junction-to-ambient, FR4 PCB), limiting continuous dissipation to 200 mW at 25 °C ambient. The device operates across −55 °C to +125 °C ambient and up to +125 °C junction temperature, with non-repetitive surge capability of 2 A peak forward current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Maximum DC or repetitive peak reverse bias before breakdown; defines clamping headroom in 3.3 V/5 V systems. |
| Forward Voltage (VF) | ≤550 mV at 500 mA pulsed - Enables low-loss voltage clamping with <0.55 V drop during transient suppression. |
| Reverse Current (IR) | ≤100 µA at 35 V, 25 °C - Ensures minimal standby leakage in always-on polarity protection circuits. |
| Diode Capacitance (Cd) | 60–90 pF at 0 V, 1 MHz - Supports clean signal integrity in >100 MHz line termination (e.g., USB 2.0 D+/D−). |
| Thermal Resistance (Rth(j-a)) | 500 K/W - Requires derating above 25 °C ambient; limits sustained power to ~100 mW at 85 °C ambient. |
| Peak Forward Surge (IFSM) | 2 A, tp < 10 ms - Withstands short-duration ESD or inrush events without metallization failure. |
Pinout & Package
Encapsulated in a standard SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body, tin-plated terminations compatible with reflow and wave soldering per Figures 5 and 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Positive terminal for forward conduction; connects to protected supply rail or signal source in clamping configurations. |
| 2 | Not Connected (n.c.) | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or thermal stress. |
| 3 | Cathode (K) | Ground or return path; tied to system GND or low-impedance reference in reverse polarity protection. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Suppresses edge avalanche at junction periphery, enabling stable 40 V VR rating without field plate masking. |
| Low forward voltage | ≤550 mV at 500 mA ensures <0.1 W conduction loss in 5 V rail clamp at 200 mA steady-state current. |
| Low junction capacitance | 60–90 pF allows use in 100+ MHz digital interfaces without signal rise-time degradation. |
| SOT23 footprint compatibility | Standard 1.9 mm pitch enables drop-in replacement in legacy designs using BAT54, BAV99, or similar dual-diode packages. |
Applications
| USB 2.0 Data Line Protection | 3.3 V Rail Clamping |
|---|---|
Use Scenario: Protecting D+ and D− lines against ESD transients and overvoltage during hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance Schottky clamp diode placed between data line and 3.3 V rail. Use Value: 60–90 pF capacitance avoids signal distortion at 480 Mbps; 550 mV VF ensures clamping threshold stays below USB receiver absolute max rating. |
Use Scenario: Limiting overshoot on microcontroller I/O supply rails during switching noise or load dump. IC Role / Device Role / Timing Role: Shunt diode connected anode-to-rail, cathode-to-GND to clamp positive excursions. Use Value: 40 V VR provides 12× margin over 3.3 V rail; 2 A IFSM handles brief 5 V spikes without failure. |
| I²C Bus Level Translation | Reverse Polarity Input Protection |
Use Scenario: Enabling bidirectional level shifting between 1.8 V and 3.3 V I²C domains using passive diode-based translation. IC Role / Device Role / Timing Role: Anode tied to lower-voltage bus, cathode to higher-voltage bus; leverages low VF for minimal voltage offset. Use Value: ≤550 mV VF introduces <0.55 V offset-within I²C logic threshold margins-while 90 pF avoids clock stretching at 400 kHz. |
Use Scenario: Preventing damage when external 5 V power adapter is inserted with reversed polarity into a battery-powered device. IC Role / Device Role / Timing Role: Series-connected anode-to-input, cathode-to-load; blocks reverse current while passing forward current. Use Value: ≤100 µA IR at 35 V ensures <0.35 mW standby loss; 500 mA IF rating supports typical 100–300 mA portable loads. |
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 NSR0530HT1G | Lower VF (450 mV typ), higher IR (200 µA at 30 V), same SOT23 package. | Better efficiency in low-VF rail clamping; less suitable for low-leakage battery monitoring. | Select when minimizing conduction loss dominates over leakage budget. |
| Diodes Incorporated SD103ATW-7-F | Higher VR (35 V), higher Cd (100 pF), same 3-pin SOT23 footprint. | Marginally lower clamping headroom; reduced high-frequency performance in USB/I²C. | Acceptable for cost-sensitive 3.3 V clamping where 5 V margin is sufficient and speed <100 MHz. |
Compared with NSR0530HT1G and SD103ATW-7-F, BAT720,235 offers balanced trade-offs: superior VR margin over SD103ATW-7-F for 5 V systems, lower IR than NSR0530HT1G for battery-backed circuits, and tighter Cd control for high-speed signal integrity.
Availability
BAT720,235 is available at Aetrix Electronics and suitable for USB interface protection, 3.3 V rail clamping, and reverse polarity input protection requiring stable component supply and consistent SOT23 packaging.
Supply support for BAT720,235 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 global semiconductor expert focused on high-volume, high-reliability discrete, logic, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
The BAT720,235 belongs to Nexperia's Schottky diode portfolio designed for high-speed signal integrity and robust power rail protection in consumer, computing, and industrial interfaces.
FAQ
Is BAT720,235 automotive qualified?
No. Per Nexperia's 2023 revision history, BAT720,235 is explicitly designated as non-automotive qualified. It lacks AEC-Q101 qualification and has not undergone automotive-grade stress testing. For automotive applications, Nexperia offers the BAT720-Q series with full AEC-Q101 compliance and extended temperature validation.
What is the maximum continuous forward current for BAT720,235?
The maximum continuous forward current is 500 mA, specified at Tamb ≤ 25 °C with device mounted on an FR4 PCB with single-sided copper and standard SOT23 footprint. At 85 °C ambient, derating reduces usable current to approximately 250 mA due to 500 K/W thermal resistance and 125 °C Tj limit.
Can BAT720,235 replace BAT54 in existing designs?
Yes, with verification. BAT720,235 shares identical SOT23 pinout (anode-pin1, n.c.-pin2, cathode-pin3) and comparable electrical specs: BAT54 has 30 V VR and ~600 mV VF, while BAT720,235 offers higher VR (40 V) and slightly lower VF (≤550 mV). Layout compatibility is confirmed, but check system-level clamping thresholds and thermal margins.
Does pin 2 require PCB connection or grounding?
No. Pin 2 is internally not connected (n.c.), as confirmed in Table 2 of the datasheet. It must remain unconnected on the PCB layout-no trace, pad, or via-to prevent unintended coupling, thermal stress, or solder bridging that could compromise reliability or ESD performance.
BAT720,235 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):
- 40 V
- Current - Average Rectified (Io):
- 500mA
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 35 V
- Capacitance @ Vr, F:
- 90pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
- Operating Temperature - Junction:
- 125°C (Max)
BAT720,235 FAQ
1.How can I place an order for BAT720,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT720,235 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 BAT720,235 reliable?
The price and inventory of BAT720,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT720,235 is usually 5 days.
3.What payment methods are accepted for BAT720,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT720,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT720,235?
BAT720,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT720,235 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 BAT720,235?
For technical support, including BAT720,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT720,235 requirements.
6.How does Aetrix verify that BAT720,235 is sourced from the original manufacturer or authorized distributors?
All BAT720,235 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 BAT720,235 meets industry standards.
7.What is the process for return or replacement of BAT720,235?
All BAT720,235 units undergo pre-shipment inspection (PSI). If there is an issue with BAT720,235, 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 BAT720,235 part is unused and in its original packaging.
Return procedure for BAT720,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT720,235 Tags
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