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Nexperia USA Inc. BAT721,215
- Part No.:
- BAT721,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAT721,215.pdf
- Description:
- DIODE SCHOTTKY 40V 200MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,375
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Product details
Overview
BAT721,215 from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, housed in an SOT23 surface-mount package. It delivers 40 V reverse voltage rating, 200 mA forward current capability, 550 mV forward voltage at 200 mA, 15 µA reverse leakage at 30 V/25 °C, and 40–50 pF capacitance at 0 V/1 MHz - enabling ultra-high-speed switching and reverse polarity protection in space-constrained DC power rails.
For engineers reviewing the BAT721,215 datasheet, BAT721,215 pinout, BAT721,215 application, or BAT721,215 equivalent, key selection criteria include low VF for efficiency-critical bias networks, low Cd for high-frequency clamping, guard-ring-enhanced ESD robustness, and SOT23 footprint compatibility with automated PCB assembly.
Technical Context
This Schottky diode uses a planar silicon structure with an integrated guard ring to suppress edge breakdown under transient stress, improving reliability in line termination and voltage clamping circuits. Its low junction capacitance (40–50 pF) and fast recovery (inherently <1 ns) stem from majority-carrier conduction and minimal stored charge.
The device operates across –65 °C to 150 °C ambient, with thermal resistance Rth(j-a) = 500 K/W on FR4 PCB. Reverse leakage rises to 3 mA at 100 °C junction temperature, requiring thermal derating in high-temperature clamp applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - maximum blocking voltage before breakdown; sets safe operating margin for 24 V and 36 V DC systems. |
| Forward Current (IF) | 200 mA continuous - defines max steady-state load current without thermal runaway on standard FR4 layout. |
| Forward Voltage (VF) | 550 mV at 200 mA - enables low-loss rectification and clamping with ≤110 mW conduction loss. |
| Reverse Leakage (IR) | 15 µA at 30 V/25 °C - ensures minimal standby power loss in reverse-biased protection paths. |
| Capacitance (Cd) | 40–50 pF at 0 V/1 MHz - supports clean signal integrity in >10 MHz termination and RF decoupling. |
| Junction Temp (Tj) | 125 °C max - constrains thermal design when operating near IF limit in enclosed environments. |
Pinout & Package
Encapsulated in a standard SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), the BAT721,215 features three terminals with Pin 2 internally unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connects to higher-potential node in clamping or polarity protection. |
| 2 | Not Connected (n.c.) | No internal bond wire; must remain floating - not tied to ground or any signal. |
| 3 | Cathode (K) | Forward current exit; ties to reference rail (e.g., GND or lower-voltage node) for unidirectional conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Guard-ring protected junction | Suppresses edge breakdown during voltage transients, increasing reliability in line termination. |
| Low forward voltage | 550 mV @ 200 mA reduces conduction loss by ~30% vs. comparable Si diodes in 3.3 V–5 V bias networks. |
| Low junction capacitance | 40–50 pF enables stable high-frequency clamping up to 100 MHz without resonance issues. |
| SOT23 footprint | Standardized 3-pin SMD outline supports automated placement and reflow compatibility with legacy designs. |
Applications
| USB Port Protection | Industrial Sensor Biasing |
|---|---|
Use Scenario: Preventing damage from accidental reverse connection of USB-powered peripherals. IC Role / Device Role / Timing Role: Reverse polarity protection diode in 5 V supply path. Use Value: 550 mV VF limits voltage drop to <1% of nominal bus voltage, preserving downstream regulation margin. |
Use Scenario: Providing stable bias current to analog sensor front-ends in PLC I/O modules. IC Role / Device Role / Timing Role: Low-noise current source feed diode with minimal thermal drift. Use Value: 15 µA IR at 25 °C ensures <0.1% error contribution to µA-level bias currents. |
| High-Speed Logic Termination | Automotive Body Control Clamping |
Use Scenario: Terminating RS-485 or CAN FD stub lines to reduce reflections and EMI. IC Role / Device Role / Timing Role: Fast-switching shunt clamp on differential data lines. Use Value: 40–50 pF Cd avoids signal distortion at >25 Mbps data rates while maintaining sub-ns response. |
Use Scenario: Suppressing load-dump transients on 12 V lighting control outputs. IC Role / Device Role / Timing Role: Transient voltage clamp across relay coils and MOSFET drains. Use Value: Guard ring withstands repetitive 40 V surges without parameter shift, extending field life beyond 10 years. |
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 | 30 V VR, 200 mA IF, 450 mV VF @ 200 mA, no guard ring | Limited to ≤24 V systems; less robust against edge breakdown in noisy automotive environments | Prefer where lower VF outweighs surge immunity requirements |
| Vishay SS12 | 20 V VR, 2 A IF, 500 mV VF @ 1 A, DO-214AC package | Higher current capacity but larger footprint; unsuitable for dense SOT23 layouts | Select only when board space allows and ≥1 A surge handling is mandatory |
Compared with NSR0230HT1G and SS12, BAT721,215 uniquely balances 40 V standoff, SOT23 compactness, and guard-ring reliability - making it optimal for industrial I/O and USB-C accessory protection where voltage margin and PCB area are jointly constrained.
Availability
BAT721,215 is available at Aetrix Electronics and suitable for USB port protection, industrial sensor biasing, high-speed logic termination, and automotive body control clamping requiring stable component supply across extended production cycles.
Supply support for BAT721,215 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 BAT721 series belongs to Nexperia's Schottky diode product line, engineered specifically for low-VF, low-Cd performance in space-constrained power management and interface protection applications.
FAQ
Is BAT721,215 suitable for automotive applications?
No - per Nexperia's revision history (v.8, 20241008), BAT721,215 is explicitly designated non-automotive qualified. Automotive-grade alternatives (e.g., BAT721Q) are available with AEC-Q101 qualification and extended temperature validation.
What does the '215' suffix indicate in BAT721,215?
The '215' denotes the specific tape-and-reel packaging variant: 3,000 units per reel, 8 mm tape width, EIA-481-compliant embossed carrier tape - confirmed in Nexperia's ordering information table and marking code documentation.
Can Pin 2 be used as a heatsink or grounded for thermal relief?
No - Pin 2 is internally not connected (n.c.), with no bond wire or die attachment. Connecting it to any potential introduces risk of solder bridging, unintended parasitic coupling, or mechanical stress on the leadframe; it must remain electrically floating.
How does the guard ring affect layout recommendations?
The guard ring requires strict adherence to Nexperia's SOT23 footprint (Fig. 5): minimum 0.6 mm solder land width and ≥0.5 mm clearance between Pad 1/3 and adjacent copper. Deviations increase edge-field concentration and negate guard-ring benefits during surge events.
BAT721,215 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):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 200 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 15 µA @ 30 V
- Capacitance @ Vr, F:
- 50pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
- Operating Temperature - Junction:
- 125°C (Max)
BAT721,215 FAQ
1.How can I place an order for BAT721,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT721,215 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 BAT721,215 reliable?
The price and inventory of BAT721,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT721,215 is usually 5 days.
3.What payment methods are accepted for BAT721,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT721,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT721,215?
BAT721,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT721,215 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 BAT721,215?
For technical support, including BAT721,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT721,215 requirements.
6.How does Aetrix verify that BAT721,215 is sourced from the original manufacturer or authorized distributors?
All BAT721,215 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 BAT721,215 meets industry standards.
7.What is the process for return or replacement of BAT721,215?
All BAT721,215 units undergo pre-shipment inspection (PSI). If there is an issue with BAT721,215, 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 BAT721,215 part is unused and in its original packaging.
Return procedure for BAT721,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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