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Nexperia USA Inc. BAT165A-QX
- Part No.:
- BAT165A-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BAT165A-QX.pdf
- Description:
- DIODE SCHOTTKY 40V 500MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:6,485
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Product details
Overview
BAT165A-QX from Nexperia is a medium-power Schottky barrier rectifier in SOD323 (SC-76) package, rated for 40 V reverse voltage and 0.75 A forward current, with typical forward voltage of 640 mV at 750 mA and reverse leakage of 1.5 µA at 40 V/25 °C; it integrates a guard ring for stress protection and is qualified to AEC-Q101 for automotive power rail rectification.
For engineers reviewing the BAT165A-QX datasheet, BAT165A-QX pinout, BAT165A-QX application, or BAT165A-QX equivalent, this device is selected for low-loss DC/DC conversion, reverse polarity protection, and space-constrained automotive subsystems where thermal performance and reliability under pulsed load conditions are critical.
Technical Context
The BAT165A-QX employs a planar Schottky junction structure with integrated guard ring to suppress edge breakdown and improve ruggedness under transient overvoltage stress. Its low VF and low IR stem from optimized metal-semiconductor interface and epitaxial doping profile.
Thermal design relies on junction-to-solder-point resistance of 225 K/W (with 1 cm² cathode pad), enabling sustained 0.5 A average forward current up to 93 °C ambient when mounted on FR4 PCB. Reverse recovery is inherently negligible due to majority-carrier conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Maximum continuous blocking voltage before breakdown; defines usable input range in 12 V/24 V automotive systems. |
| Forward Current (IF) | 0.75 A - Peak repetitive forward current at Tsp ≤ 93 °C; supports compact high-efficiency buck converter outputs. |
| Forward Voltage (VF) | 640 mV typ. at 750 mA - Low conduction loss enables >95% efficiency in low-voltage DC/DC stages. |
| Reverse Current (IR) | 1.5 µA typ. at 40 V/25 °C - Minimal leakage preserves battery life in always-on automotive modules. |
| Junction Temperature (Tj) | 150 °C max - Enables operation in engine bay environments with localized heating. |
| Thermal Resistance (Rth(j-sp)) | 225 K/W - With 1 cm² cathode copper pad, allows 0.5 A average current at 93 °C ambient without derating. |
| Package | SOD323 (SC-76) - 1.7 mm × 1.25 mm × 0.95 mm footprint; compatible with standard reflow profiles and automated placement. |
Pinout & Package
Encapsulated in a surface-mounted SOD323 (SC-76) plastic package with 2 leads, 1.3 mm pitch, and dimensions 1.7 mm × 1.25 mm × 0.95 mm. Cathode marked with band; anode unmarked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Output terminal for rectified DC; connects to load or ground return path; requires thermal pad for power dissipation. |
| 2 | Anode (A) | Input terminal for AC or switched input; ties to switching node or source rail; minimal parasitic inductance due to short lead frame. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Suppresses edge breakdown under surge or ESD stress, improving robustness in automotive transients (ISO 7637-2 Pulse 5a). |
| AEC-Q101 qualification | Validated for temperature cycling, HTRB, and ESD per automotive discrete stress test requirements. |
| Low VF / low IR trade-off optimization | 640 mV @ 750 mA and 1.5 µA @ 40 V enable simultaneous high efficiency and low standby loss. |
| Small SMD footprint | SOD323 package saves >50% board area vs. SOD123, enabling dense power module layouts. |
Applications
| Automotive Body Control Module | USB-C Power Delivery Clamp |
|---|---|
|
Use Scenario: Reverse polarity protection on 12 V supply rail feeding microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage during battery jump-start misconnection. Use Value: 640 mV VF limits voltage drop to <1% at 0.5 A, preserving brown-out margin for 3.3 V LDOs. |
Use Scenario: Output rectification in 5 V/3 A buck-boost converter for USB-C PD sink applications. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in discontinuous conduction mode (DCM) topology. Use Value: 1.5 µA IR at 25 °C minimizes no-load power loss, supporting Energy Star Level VI standby compliance. |
| Industrial Sensor Node Power | LED Driver Reverse Protection |
|
Use Scenario: Low-voltage rectification of harvested energy from piezoelectric or thermoelectric sources. IC Role / Device Role / Timing Role: AC-to-DC conversion stage for sub-100 µW micropower systems. Use Value: 300 mV VF at 10 mA enables usable output above 300 mV input amplitude, extending harvestable vibration range. |
Use Scenario: Polarity safeguard in constant-current LED driver input stage exposed to field wiring errors. IC Role / Device Role / Timing Role: Fail-safe blocking element during reverse connection events. Use Value: Guard ring ensures 40 V VR rating holds under 100 ns transient spikes common in industrial cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSSR0740MX | Same 40 V/0.7 A rating; VF = 620 mV typ. at 700 mA but IR = 2.5 µA at 40 V/25 °C; SOD-323 package. | Higher leakage reduces suitability for battery-backed sensor nodes requiring <2 µA standby drain. | Select when lowest VF dominates and leakage is secondary; verify thermal margin with Rth(j-a) = 350 K/W. |
| Vishay VS-2EJH02-M3/54 | Higher IF = 2 A, VR = 20 V; VF = 450 mV typ. at 2 A; SMA package (larger, 4.5 mm × 2.7 mm). | Not suitable for 40 V systems; oversized footprint increases layout area and parasitic inductance. | Only consider if system requires >1 A current and can accommodate larger package; not a direct replacement. |
Compared with NSSR0740MX, BAT165A-QX offers lower leakage for ultra-low-power automotive modules; versus VS-2EJH02-M3/54, it provides precise 40 V rating and minimal footprint-critical for space-limited ADAS camera power rails.
Availability
BAT165A-QX is available at Aetrix Electronics and suitable for automotive body control units, USB-C power delivery clamps, and industrial sensor node power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAT165A-QX 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 essential semiconductors for automotive, industrial, and consumer markets.
The BAT165A-QX belongs to Nexperia's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for robust, low-loss power management in harsh automotive environments.
FAQ
Is BAT165A-QX suitable for synchronous rectification in DC/DC converters?
No - BAT165A-QX is a passive Schottky diode, not a MOSFET-based synchronous rectifier. It functions as a freewheeling or output rectifier in non-synchronous topologies like flyback or buck. Its zero reverse recovery enables use in high-frequency (>1 MHz) switching, but gate drive capability is absent.
What is the maximum allowable soldering temperature profile for BAT165A-QX?
The BAT165A-QX complies with JEDEC J-STD-020D for MSL1 handling. Peak reflow temperature must not exceed 260 °C for ≤30 seconds, with ramp-up rate ≤3 °C/s and ramp-down rate ≤6 °C/s. Wave soldering requires preheat ≤150 °C and contact time ≤5 s at 260 °C.
Does the guard ring affect electrical parameters like capacitance or switching speed?
Yes - the guard ring slightly increases diode capacitance to 9–12 pF at 10 V, but does not degrade switching speed. As a majority-carrier device, BAT165A-QX has no minority-carrier storage delay; its effective switching is limited only by circuit inductance and capacitance, not internal charge removal.
Can BAT165A-QX replace BAT54 series diodes in existing designs?
Only with verification - BAT54 devices are dual or triple diodes in SOT-23 with 30 V VR and 200 mA IF. BAT165A-QX offers higher VR (40 V), higher IF (0.75 A), and lower VF, but is single-diode SOD323. Pinout and footprint differ; redesign of layout and thermal relief is required.
BAT165A-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 750mA
- Voltage - Forward (Vf) (Max) @ If:
- 740 mV @ 750 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 8 µA @ 40 V
- Capacitance @ Vr, F:
- 12pF @ 10V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- 150°C
BAT165A-QX FAQ
1.How can I place an order for BAT165A-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT165A-QX 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 BAT165A-QX reliable?
The price and inventory of BAT165A-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT165A-QX is usually 5 days.
3.What payment methods are accepted for BAT165A-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT165A-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT165A-QX?
BAT165A-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT165A-QX 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 BAT165A-QX?
For technical support, including BAT165A-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT165A-QX requirements.
6.How does Aetrix verify that BAT165A-QX is sourced from the original manufacturer or authorized distributors?
All BAT165A-QX 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 BAT165A-QX meets industry standards.
7.What is the process for return or replacement of BAT165A-QX?
All BAT165A-QX units undergo pre-shipment inspection (PSI). If there is an issue with BAT165A-QX, 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 BAT165A-QX part is unused and in its original packaging.
Return procedure for BAT165A-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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