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Nexperia USA Inc. BAT720-QR
- Part No.:
- BAT720-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAT720-QR.pdf
- Description:
- DIODE SCHOTTKY 40V 500MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,750
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Product details
Overview
BAT720-Q from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, housed in an SOT23 (TO-236AB) package. It delivers 40 V reverse voltage rating, ≤550 mV forward voltage at 500 mA, ≤100 µA reverse leakage at 35 V, 60–90 pF capacitance at 0 V, and is AEC-Q101 qualified for automotive use.
For engineers reviewing the BAT720-Q datasheet, BAT720-Q pinout, BAT720-Q application, or BAT720-Q equivalent, key selection criteria include low VF for power efficiency, low Cd for high-speed switching integrity, AEC-Q101 qualification for under-hood reliability, and SOT23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The BAT720-Q employs a planar Schottky junction architecture with an integrated guard ring to suppress edge breakdown and improve surge robustness. Its low-barrier metal-semiconductor interface enables fast carrier injection and minimal minority-carrier storage.
Designed for pulsed operation (tp ≤ 300 µs, duty δ ≤ 0.02), it maintains stable VF and IR across ambient temperatures from –55 °C to 125 °C and supports non-repetitive peak forward current up to 2 A with proper thermal management on FR4 PCB.
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 protection circuits. |
| Forward Voltage (VF) | ≤550 mV @ 500 mA - Low conduction loss enabling efficient rectification and polarity protection in low-voltage rails. |
| Reverse Current (IR) | ≤100 µA @ 35 V, 25 °C - Ensures minimal standby leakage in battery-backed or always-on systems. |
| Diode Capacitance (Cd) | 60–90 pF @ 0 V, 1 MHz - Enables clean signal termination and minimal distortion in >100 MHz data lines. |
| Thermal Resistance (Rth(j-a)) | 500 K/W - Requires careful PCB copper area design to maintain Tj ≤ 125 °C at full 500 mA DC load. |
| AEC-Q101 Qualification | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard. |
Pinout & Package
Encapsulated in a surface-mount SOT23 (TO-236AB) plastic package measuring 2.9 mm × 1.3 mm × 1.0 mm with 1.9 mm lead pitch and standard FR4-compatible footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connects to higher-potential node in clamping or polarity protection paths. |
| 2 | Not Connected (n.c.) | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress. |
| 3 | Cathode (K) | Forward current exit point; ties to reference rail (e.g., GND or battery negative) in reverse polarity schemes. |
Key Features
| Feature | Design Value |
|---|---|
| Guard Ring Integration | Suppresses edge-related avalanche and improves voltage standoff consistency across manufacturing lots. |
| Low Forward Voltage | ≤550 mV at rated 500 mA ensures <110 mW conduction loss, critical for thermally constrained modules. |
| Low Junction Capacitance | 60–90 pF enables clean 100+ MHz signal line termination without resonance or ringing artifacts. |
| AEC-Q101 Qualification | Validated for automotive under-hood environments including 1000-cycle temperature cycling and 1000-hour HTRB testing. |
Applications
| Ultra-High-Speed Switching | Voltage Clamping |
|---|---|
Use Scenario: High-frequency DC-DC converter synchronous rectification and flyback snubber networks. IC Role / Device Role / Timing Role: Fast-turn-off freewheeling diode replacing slower PN types to reduce switching losses and improve efficiency. Use Value: 60–90 pF capacitance and ≤550 mV VF minimize dead-time conduction loss and EMI generation at >500 kHz switching frequencies. | Use Scenario: I/O line overvoltage suppression in CAN transceivers and sensor interfaces. IC Role / Device Role / Timing Role: Clamp diode shunting transient spikes above VCC or below GND to protect downstream logic inputs. Use Value: 40 V VR rating and guard ring ensure reliable clamping of ±36 V transients without degradation over 10⁵ cycles. |
| Line Termination | Reverse Polarity Protection |
Use Scenario: RS-485/RS-422 differential pair termination in industrial communication nodes. IC Role / Device Role / Timing Role: AC-coupled termination diode providing impedance matching without DC loading. Use Value: Low Cd preserves signal integrity up to 25 Mbps; low VF avoids baseline shift in bidirectional bus architectures. | Use Scenario: Input protection for 12 V automotive ECUs and infotainment power supplies. IC Role / Device Role / Timing Role: Series-connected anode-to-input diode blocking reverse battery connection. Use Value: ≤550 mV VF limits voltage drop to <0.6 V at 500 mA, preserving >11.4 V supply headroom for downstream regulators. |
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 | 30 V VR, 420 mV VF @ 500 mA, 110 pF Cd, SOD-123 package | Limited to ≤30 V systems; smaller footprint but higher capacitance degrades >100 MHz signal fidelity | Select when VR margin <10 V suffices and board space is tighter than 2.9 × 1.3 mm. |
| Vishay VS-2EDH02HM3/85A | 40 V VR, 520 mV VF @ 500 mA, 85 pF Cd, SOT-23 package, AEC-Q101 qualified | Nearly identical specs but slightly lower VF; same footprint and qualification level | Drop-in alternative where Nexperia supply continuity is constrained; verify marking and thermal derating curves. |
Compared with BAT720-Q, NSR0530HT1G trades 10 V VR headroom for reduced size and cost in non-automotive designs, while VS-2EDH02HM3/85A offers marginally better conduction efficiency with identical form factor and qualification-making it the closest functional match for automotive redesigns.
Availability
BAT720-Q is available at Aetrix Electronics and suitable for automotive ECUs, industrial communication interfaces, and portable power management systems requiring stable component supply across multi-year production cycles.
Supply support for BAT720-Q 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 leadership in automotive-qualified components and advanced packaging.
The BAT720-Q belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive signal integrity and power protection applications demanding low VF, low Cd, and robust transient immunity.
FAQ
What is the maximum continuous forward current for BAT720-Q?
The BAT720-Q is rated for 500 mA DC forward current under conditions of Tamb ≤ 25 °C on a standard FR4 PCB with single-sided copper. At higher ambient temperatures, derating is required-e.g., ~350 mA at 85 °C-to maintain junction temperature ≤ 125 °C given its 500 K/W Rth(j-a).
Is BAT720-Q suitable for reverse polarity protection in 24 V automotive systems?
No-BAT720-Q has a 40 V reverse voltage rating, making it appropriate only for 12 V nominal systems (e.g., passenger vehicle ECUs). For 24 V commercial vehicle applications, a ≥60 V Schottky diode such as BAT750-Q is required to maintain adequate safety margin against load-dump transients.
Does the n.c. pin (Pin 2) require PCB routing or grounding?
No-Pin 2 is internally not connected and must remain unconnected on the PCB. Routing or grounding it may introduce parasitic capacitance, mechanical stress on the die bond wire, or unintended current paths that compromise reliability or electrical performance.
How does the guard ring affect surge robustness in BAT720-Q?
The integrated guard ring redistributes electric field intensity at the silicon periphery, suppressing premature edge breakdown during repetitive 2 A non-repetitive surges (tp < 10 ms). This extends operational life in automotive load-dump and ISO 7637-2 pulse 5a environments without requiring external TVS supplementation.
BAT720-QR 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
- Operating Temperature - Junction:
- 125°C
BAT720-QR FAQ
1.How can I place an order for BAT720-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT720-QR 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-QR reliable?
The price and inventory of BAT720-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT720-QR is usually 5 days.
3.What payment methods are accepted for BAT720-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT720-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT720-QR?
BAT720-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT720-QR 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-QR?
For technical support, including BAT720-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT720-QR requirements.
6.How does Aetrix verify that BAT720-QR is sourced from the original manufacturer or authorized distributors?
All BAT720-QR 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-QR meets industry standards.
7.What is the process for return or replacement of BAT720-QR?
All BAT720-QR units undergo pre-shipment inspection (PSI). If there is an issue with BAT720-QR, 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-QR part is unused and in its original packaging.
Return procedure for BAT720-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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