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Nexperia USA Inc. BAT721S,215
- Part No.:
- BAT721S,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAT721S,215.pdf
- Description:
- DIODE ARR SCHOTTKY 40V TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:81,048
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Product details
Overview
BAT721S,215 from Nexperia is a planar Schottky barrier dual diode in SOT23 package, featuring integrated guard ring for stress protection. It delivers 200 mA forward current per diode, 40 V reverse voltage rating, and low 550 mV forward voltage at 200 mA - optimized for ultra-high-speed switching and reverse polarity protection in compact power management circuits.
For engineers reviewing the BAT721S,215 datasheet, BAT721S,215 pinout, BAT721S,215 application, or BAT721S,215 equivalent, key selection criteria include verified dual-diode configuration with shared terminal (K1/A2), low 40–50 pF capacitance at 0 V, thermal resistance of 500 K/W, and non-automotive qualification status per latest revision.
Technical Context
The BAT721S,215 integrates two independent Schottky diodes in a single SOT23-3 package with a common terminal (Pin 3 = K1/A2), enabling compact dual-path designs such as bidirectional clamping or complementary rectification. Its planar construction with guard ring enhances ESD and transient robustness without requiring external protection components.
It operates across –65 °C to 150 °C ambient temperature, with junction temperature limited to 125 °C. Reverse leakage remains ≤15 µA at 30 V/25 °C and rises to 3 mA at 30 V/100 °C - critical for low-power standby circuits where dark current must be tightly controlled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward Current (IF) | 200 mA per diode - supports continuous low-power rail switching without derating at 25 °C ambient. |
| Reverse Voltage (VR) | 40 V - suitable for 24 V industrial bus clamping and 3.3/5/12 V logic-level protection. |
| Forward Voltage (VF) | 550 mV at IF = 200 mA - minimizes conduction loss in high-efficiency DC path or OR-ing applications. |
| Diode Capacitance (Cd) | 40–50 pF at VR = 0 V, f = 1 MHz - enables clean signal integrity in >100 MHz line termination. |
| Reverse Leakage (IR) | 15 µA at VR = 30 V, Tamb = 25 °C - ensures low standby drain in battery-backed systems. |
| Thermal Resistance (Rth(j-a)) | 500 K/W - requires PCB copper area planning for sustained 200 mA operation in free air. |
| Junction Temperature (Tj) | 125 °C max - defines safe operating envelope under combined forward + reverse power dissipation. |
Pinout & Package
Encapsulated in a standard SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), the BAT721S,215 uses a 3-terminal configuration with shared cathode/anode functionality on Pin 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (Diode 1) | Input terminal for first Schottky path; connects to supply or signal source needing forward conduction. |
| 2 | Cathode (Diode 2) | Output return for second diode; used in clamping or reverse-blocking configurations. |
| 3 | Cathode (Diode 1) / Anode (Diode 2) | Common node enabling dual-diode topologies - e.g., series-connected clamp or back-to-back protection. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated guard ring | Enhances ESD robustness and transient overvoltage tolerance without external TVS components. |
| Low forward voltage | 300 mV typical at 10 mA - reduces voltage drop in low-current sensing or biasing paths. |
| Low capacitance | 40–50 pF - preserves signal edge rate in high-speed data line termination (e.g., USB, LVDS). |
| Non-automotive qualification | Complies with industrial reliability standards but excludes AEC-Q101 - requires alternate part for automotive use. |
Applications
| Ultra-High-Speed Switching | Line Termination |
|---|---|
|
Use Scenario: Fast-switching DC-DC converter synchronous rectification and freewheeling paths. IC Role / Device Role / Timing Role: Schottky dual diode providing low-loss, low-recovery conduction path during switch node transitions. Use Value: 550 mV VF at 200 mA reduces conduction loss by ~40% vs. standard silicon diodes, improving efficiency in 1–3 MHz converters. |
Use Scenario: RS-485, CAN FD, and LVDS bus termination networks. IC Role / Device Role / Timing Role: Dual-diode clamp protecting differential receivers from ESD and overshoot transients. Use Value: 40–50 pF capacitance avoids signal distortion up to 250 Mbps while maintaining <1 ns response time. |
| Voltage Clamping | Reverse Polarity Protection |
|
Use Scenario: 12 V/24 V industrial input protection against load dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional clamping device limiting voltage excursions to ±0.55 V above/below rails. Use Value: Shared terminal (Pin 3) enables compact dual-rail clamp using single SOT23 footprint - saves 30% board area vs. discrete pair. |
Use Scenario: Battery-powered IoT sensors and portable medical devices with removable Li-ion packs. IC Role / Device Role / Timing Role: Low-VF series blocking diode preventing reverse current flow during incorrect battery insertion. Use Value: 300 mV VF at 10 mA ensures <10 µW standby loss - extends shelf life of sealed units by >12 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky dual diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR20F40NXT5G | Same SOT23-3 pinout; 40 V VR, 200 mA IF, but VF = 520 mV @ 200 mA - 30 mV lower than BAT721S,215. | Qualified to AEC-Q101 - suitable for automotive infotainment power rails where BAT721S,215 is excluded. | Select when automotive qualification or marginally lower VF is required; verify marking compatibility in automated assembly. |
| Diodes Inc. SDM20U40-7 | Dual Schottky in SOT23-3, 40 V VR, 200 mA IF, VF = 570 mV @ 200 mA - 20 mV higher; Cd = 55 pF. | Higher capacitance limits use in >150 Mbps interfaces; better thermal performance (Rth(j-a) = 420 K/W). | Prefer for thermally constrained layouts where 80 K/W lower thermal resistance offsets slightly higher VF. |
Compared with NSR20F40NXT5G and SDM20U40-7, the BAT721S,215 offers balanced VF/Cd trade-off and industrial-grade reliability at lower cost, but requires explicit validation for automotive use due to its non-automotive qualification status.
Availability
BAT721S,215 is available at Aetrix Electronics and suitable for ultra-high-speed switching, line termination, and reverse polarity protection requiring stable component supply in industrial control, IoT sensor nodes, and portable instrumentation.
Supply support for BAT721S,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 specializing in high-performance, reliable discrete, logic, and MOSFET devices, headquartered in Nijmegen, Netherlands.
The BAT721S,215 belongs to Nexperia's Schottky diode portfolio designed for space-constrained, high-efficiency power and signal integrity applications - emphasizing low VF, low Cd, and robust transient handling in consumer, industrial, and communications equipment.
FAQ
Is BAT721S,215 qualified for automotive applications?
No. Per Nexperia's October 2024 revision history, BAT721S,215 is explicitly designated as non-automotive qualified. It lacks AEC-Q101 testing and automotive-specific reliability screening. For automotive use, select the BAT721B-Q or BAT721C-Q variants, which share identical electrical specs but include full automotive qualification documentation and traceability.
What is the function of Pin 3 (K1, A2) in circuit design?
Pin 3 serves as the cathode of Diode 1 and anode of Diode 2 simultaneously, enabling three-terminal dual-diode configurations such as back-to-back clamping, OR-ing, or bidirectional ESD protection. This shared terminal reduces PCB footprint versus two discrete diodes and allows compact implementation of voltage-limiting networks without additional routing layers.
How does thermal resistance affect real-world operation at 200 mA?
With Rth(j-a) = 500 K/W, dissipating 110 mW (200 mA × 550 mV) raises junction temperature by 55 K above ambient. At Tamb = 70 °C, Tj reaches 125 °C - the absolute maximum. Sustained operation thus requires either reduced current, forced airflow, or added copper pour to lower effective Rth(j-a) below 350 K/W for reliable long-term use.
Can BAT721S,215 replace BAT54S in existing designs?
Yes, with verification. Both are SOT23-3 dual Schottky diodes with identical pinout (A1, K2, K1/A2). BAT721S,215 has lower VF (550 mV vs. BAT54S's 600 mV @ 200 mA) and tighter Cd (40–50 pF vs. 60 pF), improving efficiency and signal fidelity. However, BAT54S supports higher IF (300 mA), so current headroom must be confirmed in the target application.
BAT721S,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
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 200mA (DC)
- 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
- Operating Temperature - Junction:
- 125°C (Max)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BAT721S,215 FAQ
1.How can I place an order for BAT721S,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT721S,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 BAT721S,215 reliable?
The price and inventory of BAT721S,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT721S,215 is usually 5 days.
3.What payment methods are accepted for BAT721S,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT721S,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT721S,215?
BAT721S,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT721S,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 BAT721S,215?
For technical support, including BAT721S,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT721S,215 requirements.
6.How does Aetrix verify that BAT721S,215 is sourced from the original manufacturer or authorized distributors?
All BAT721S,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 BAT721S,215 meets industry standards.
7.What is the process for return or replacement of BAT721S,215?
All BAT721S,215 units undergo pre-shipment inspection (PSI). If there is an issue with BAT721S,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 BAT721S,215 part is unused and in its original packaging.
Return procedure for BAT721S,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT721S,215 Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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