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Diodes Incorporated BAT64SQ-7-F
- Part No.:
- BAT64SQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAT64SQ-7-F.pdf
- Description:
- DIODE ARR SCHOT 40V 250MA SOT233
- Quantity:
- Payment:
- Shipping:
Inventory:2,668
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Product details
Overview
BAT64SQ-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT23 package, rated for 40 V peak reverse voltage, 250 mA average forward current, and 0.75 V max forward voltage at 100 mA. It features PN junction guard ring for transient protection and is AEC-Q101 qualified for automotive use.
For engineers reviewing the BAT64SQ-7-F datasheet, BAT64SQ-7-F pinout, BAT64SQ-7-F application, or BAT64SQ-7-F equivalent, key selection criteria include low VF at low-to-moderate forward currents (350 mV @ 1 mA), fast 3.0 ns reverse recovery time, 6.0 pF junction capacitance at 1 V, and IATF16949-certified manufacturing for mission-critical automotive subsystems.
Technical Context
This Schottky diode operates with metal–semiconductor junction architecture to achieve low forward voltage drop and minimal minority-carrier storage, enabling nanosecond-scale switching. Its guard-ringed PN structure provides enhanced ESD and transient immunity without compromising speed or leakage.
Rated for -55°C to +150°C junction temperature, it delivers stable performance across automotive under-hood environments. Thermal resistance of 500°C/W (junction-to-ambient, FR-4 board) and 250 mW power dissipation define its thermal envelope under continuous DC or pulsed operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage before breakdown; sets safe blocking margin in 24 V automotive supply rails. |
| IO | 250 mA - Continuous DC forward current rating; supports signal-level rectification and clamping in sensor interfaces. |
| VF @ 100 mA | 0.75 V max - Low conduction loss enables efficient voltage translation and logic-level shifting in low-power circuits. |
| tRR | 3.0 ns typical - Enables high-frequency (>100 MHz) signal clamping and RF detector applications without tail current delay. |
| CT @ 1 V | 6.0 pF - Low junction capacitance preserves signal integrity in high-speed data line protection and antenna tuning circuits. |
| IR @ 40 V | 2.0 µA max - Minimal leakage ensures stable biasing in precision analog front-ends and battery-monitoring paths. |
| TJ Range | -55°C to +150°C - Validated operation across full automotive temperature range including engine control units and ADAS modules. |
Pinout & Package
Package: SOT23 - 3-terminal surface-mount plastic package with matte tin-plated alloy 42 leadframe; moisture sensitivity level 1 per J-STD-020; UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node in clamping or rectification path; polarity-marked on top surface. |
| Cathode (Pin 2) | Forward current exit / reverse-blocking terminal | Internally tied to package tab; serves as primary reference for reverse-bias protection and ESD return path. |
| No-Connect (Pin 3) | Unused internal die pad | Electrically isolated; no bonding wire attached; must remain unconnected in PCB layout to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Low turn-on voltage | 350 mV @ 1 mA - Reduces voltage offset in precision signal clamping and enables operation from sub-1 V supplies. |
| Fast switching | 3.0 ns tRR - Supports >300 MHz small-signal detection and high-speed digital bus termination without ringing. |
| PN junction guard ring | Integrated transient suppression - Improves robustness against ISO 7637-2 pulse 1/2a/5a surges without external TVS devices. |
| AEC-Q101 qualification | Validated for automotive electronics - Meets stress test requirements for temperature cycling, HTRB, and ESD (HBM ≥ 8 kV). |
| Green packaging | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - Complies with automotive OEM material declarations and RoHS 3 (2015/863/EU). |
Applications
| Automotive Sensor Interface | USB Data Line Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD events in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed between signal line and ground/VCC rail to limit transient excursions within ±0.75 V. Use Value: Guard ring structure sustains 2.1 A non-repetitive surge without degradation, eliminating need for secondary TVS in space-constrained modules. | Use Scenario: ESD protection for USB 2.0 D+ and D− lines in infotainment head units and telematics gateways. IC Role / Device Role / Timing Role: Low-capacitance (6.0 pF) shunt diode providing IEC 61000-4-2 Level 4 (±15 kV air) immunity without signal distortion. Use Value: Sub-1 ns response time and 0.75 V clamping voltage preserve eye diagram integrity at 480 Mbps signaling rates. |
| RF Detector Circuit | Power Supply OR-ing |
Use Scenario: Envelope detection in 2.4 GHz ISM-band receiver front-ends for keyless entry and TPMS receivers. IC Role / Device Role / Timing Role: Signal rectifier converting RF carrier amplitude into baseband DC voltage; operates in zero-bias mode. Use Value: 350 mV forward drop at 1 mA enables detection sensitivity down to -25 dBm with minimal dynamic range compression. | Use Scenario: OR-ing two redundant 3.3 V power domains (e.g., main battery and backup supercapacitor) in ADAS camera modules. IC Role / Device Role / Timing Role: Low-VF passive diode preventing backfeed while minimizing voltage drop across power path. Use Value: 0.43 V VF @ 10 mA reduces power loss by 58% versus standard silicon diodes, extending backup runtime by >12%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54CWT1G | Higher VF (0.85 V @ 100 mA); same SOT-23 package; 30 V VRRM | Limited to 24 V systems; less suitable for 40 V load-dump immunity | Select when lower cost is prioritized over 40 V blocking and automotive qualification. |
| NSR0230HT1G | Lower IR (0.5 µA @ 30 V); 30 V VRRM; 200 mA IO; same 3 ns tRR | Not AEC-Q101 qualified; lacks guard ring; unsuitable for production automotive | Use only in industrial or consumer designs where qualification and transient robustness are not required. |
Compared with SBAT54CWT1G and NSR0230HT1G, BAT64SQ-7-F uniquely combines 40 V blocking, AEC-Q101 qualification, and integrated guard ring-making it the only option among the three validated for safety-critical automotive power and signal protection.
Availability
BAT64SQ-7-F is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB data line protection, RF detector circuits, and power supply OR-ing requiring stable component supply and long-term lifecycle support.
Supply support for BAT64SQ-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BAT64Q/AQ/CQ/SQ series belongs to Diodes' automotive-qualified Schottky diode product line, engineered specifically for transient-robust signal conditioning and power management in harsh-environment vehicle electronics.
FAQ
What is the maximum junction temperature for BAT64SQ-7-F during continuous operation?
The absolute maximum junction temperature is +150°C, with derating beginning at +25°C ambient. At 250 mW power dissipation and 500°C/W thermal resistance, junction temperature rises 125°C above ambient-so sustained operation requires ambient ≤ +25°C unless heatsinking or airflow is applied. The device is rated for storage down to -55°C.
Is BAT64SQ-7-F compatible with lead-free reflow soldering profiles?
Yes. BAT64SQ-7-F uses matte tin-plated alloy 42 leadframe and complies with JEDEC J-STD-020 moisture sensitivity level 1. It supports standard Pb-free reflow profiles up to 260°C peak temperature, with no pre-bake required. The package meets MIL-STD-202 Method 208 solderability specifications.
Does BAT64SQ-7-F have a built-in ESD protection structure beyond the guard ring?
No. The PN junction guard ring enhances transient immunity but does not replace dedicated ESD protection. Per the datasheet, the device has HBM ESD rating ≥ 8 kV (AEC-Q101 requirement), achieved through process-level junction design-not discrete on-chip ESD clamps. External TVS may still be needed for IEC 61000-4-2 compliance in system-level testing.
Can BAT64SQ-7-F be used in reverse-biased photodiode biasing applications?
No. BAT64SQ-7-F is optimized for forward conduction and reverse transient clamping-not low-noise, low-leakage photodiode biasing. Its 2.0 µA max IR at 40 V is too high for precision photodiode applications, where leakage below 1 nA is typically required. Use dedicated photodiode bias diodes like BAS16HV instead.
BAT64SQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- 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):
- 250mA
- Voltage - Forward (Vf) (Max) @ If:
- 750 mV @ 100 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 3 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 40 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BAT64SQ-7-F FAQ
1.How can I place an order for BAT64SQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT64SQ-7-F 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 BAT64SQ-7-F reliable?
The price and inventory of BAT64SQ-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT64SQ-7-F is usually 5 days.
3.What payment methods are accepted for BAT64SQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT64SQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT64SQ-7-F?
BAT64SQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT64SQ-7-F 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 BAT64SQ-7-F?
For technical support, including BAT64SQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT64SQ-7-F requirements.
6.How does Aetrix verify that BAT64SQ-7-F is sourced from the original manufacturer or authorized distributors?
All BAT64SQ-7-F 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 BAT64SQ-7-F meets industry standards.
7.What is the process for return or replacement of BAT64SQ-7-F?
All BAT64SQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAT64SQ-7-F, 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 BAT64SQ-7-F part is unused and in its original packaging.
Return procedure for BAT64SQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT64SQ-7-F Tags
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BAV99-7-F
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BAT54C-7-F
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BAV99,215
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BAT54S-7-F
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BAV99LT1G
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