My Inquiry
My Account
Nexperia USA Inc. BAT54J-QX
- Part No.:
- BAT54J-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BAT54J-QX.pdf
- Description:
- BAT54J-Q/SOD323F/SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:8,074
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BAT54J-Q from Nexperia is a planar Schottky barrier single diode with integrated guard ring for stress protection, housed in an SOD323F (SC-90) surface-mount package. It delivers 320 mV forward voltage at 1 mA, 30 V reverse voltage rating, and 10 pF capacitance at 1 V - optimized for low-loss clamping and polarity protection in automotive power rails.
For engineers reviewing the BAT54J-Q datasheet, BAT54J-Q pinout, BAT54J-Q application, or BAT54J-Q equivalent, key selection criteria include its AEC-Q101 qualification, ultra-low VF across 0.1–100 mA range, flat-lead thermal performance (Rth(j-sp) = 55 K/W), and SC-90 coplanarity for reliable reflow assembly in space-constrained ECUs.
Technical Context
This Schottky diode uses a planar silicon structure with guard ring to suppress edge breakdown under transient stress, enabling stable operation up to 150 °C junction temperature. Its low 10 pF capacitance and sub-1 V forward conduction support high-speed line termination and fast-switching reverse polarity protection.
The device is rated for 600 mA non-repetitive peak forward current and 300 mA repetitive peak current, with thermal resistance from junction to solder point at 55 K/W - confirming suitability for thermally demanding automotive PCB layouts where cathode pad area is limited to 1 cm² on FR4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward Voltage (VF) | 320 mV @ 1 mA pulsed - enables ultra-low power loss in bias and clamping paths |
| Reverse Voltage (VR) | 30 V - supports 24 V automotive systems with margin against load dump transients |
| Reverse Current (IR) | 2 µA @ 25 V - ensures minimal leakage in always-on battery monitoring circuits |
| Diode Capacitance (Cd) | 10 pF @ 1 V, 1 MHz - preserves signal integrity in high-frequency data line termination |
| Thermal Resistance (Rth(j-sp)) | 55 K/W - allows efficient heat transfer from junction to cathode solder point on FR4 |
| Peak Forward Current (IFSM) | 600 mA @ 10 ms - withstands short-duration surge events without degradation |
| Junction Temperature (Tj) | 150 °C - meets under-hood thermal requirements per AEC-Q101 stress testing |
Pinout & Package
Encapsulated in the SOD323F (SC-90) package: 1.7 mm × 1.25 mm × 0.7 mm body, flat leads for coplanarity and improved thermal behavior on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Marked side with bar; connects to ground or lower-potential rail in reverse polarity protection |
| 2 | Anode (A) | Input terminal for forward conduction path; ties to power source or signal line |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Suppresses edge leakage and improves ruggedness against ESD and voltage transients |
| Flat lead geometry | Ensures ≤0.1 mm coplanarity for consistent reflow wetting and reduced tombstoning risk |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD (HBM ≥8 kV) |
| Low thermal resistance | Rth(j-sp) = 55 K/W enables higher continuous current in compact layouts without heatsinking |
| Pulsed VF characterization | Specified across 0.1–100 mA with tp ≤ 300 µs - reflects real-world switching behavior |
Applications
| Automotive Body Control Module (BCM) | USB Type-C Port Protection |
|---|---|
|
Use Scenario: Reverse battery connection detection and blocking in 12 V/24 V BCM power inputs. IC Role / Device Role / Timing Role: Unidirectional current gate placed between battery terminal and system regulator input. Use Value: Prevents damage from miswired jump-starts while adding <10 mΩ effective series resistance during normal operation. |
Use Scenario: Polarity correction and overvoltage clamping on USB-C CC and VCONN lines. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp protecting USB PD controller I/O pins. Use Value: 10 pF capacitance avoids signal distortion on 5 Gbps SuperSpeed lanes; 320 mV VF minimizes voltage drop on 5 V VCONN supply. |
| Industrial Sensor Node Power Rail | Automotive LIN Bus Termination |
|
Use Scenario: Isolation of backup coin-cell supply from main 3.3 V rail during brownout conditions. IC Role / Device Role / Timing Role: OR-ing diode ensuring seamless switchover without backfeed. Use Value: 2 µA IR at 25 V prevents measurable drain on 220 mAh coin cell over 10-year shelf life. |
Use Scenario: End-of-line termination on 12 V LIN bus to suppress reflections and improve noise immunity. IC Role / Device Role / Timing Role: DC bias clamp maintaining bus idle level at ~11 V while absorbing transients. Use Value: 30 V VR rating accommodates LIN bus load-dump spikes; 600 mA IFSM handles ISO 7637-2 Pulse 1/2a surges. |
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 | Higher VF (450 mV @ 1 mA); same SOD-323 package; no AEC-Q101 certification | Acceptable for consumer-grade USB ports but not qualified for automotive ECU use | Select only if AEC-Q101 compliance is not required and higher VF is tolerable |
| Vishay VS-2EDH01HM3/85A | Lower VR (20 V); TO-236AB package; Rth(j-a) = 300 K/W vs. 230 K/W for BAT54J-Q | Suitable for low-power IoT sensors but insufficient for 24 V automotive systems | Use only in ≤20 V applications where thermal budget permits higher ambient rise |
Compared with NSR0230HT1G and VS-2EDH01HM3/85A, BAT54J-Q uniquely combines AEC-Q101 qualification, 30 V VR headroom, and 55 K/W junction-to-solder-point thermal resistance - making it the only option validated for thermally dense, safety-critical automotive power domains.
Availability
BAT54J-Q is available at Aetrix Electronics and suitable for automotive body control modules, USB-C port protection circuits, industrial sensor node power management, and LIN bus termination requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAT54J-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 logic, discrete, and MOSFET devices - spun off from Philips in 2017 and headquartered in Nijmegen, Netherlands.
BAT54J-Q belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for robust, low-loss protection in automotive power distribution and interface circuits.
FAQ
Is BAT54J-Q suitable for 48 V mild-hybrid automotive systems?
No. BAT54J-Q has a 30 V reverse voltage rating, which provides insufficient margin against 48 V system transients such as ISO 16750-2 load dump (up to 60 V). For 48 V applications, Nexperia recommends BAT54C-Q or PMEG3010CEAX, both rated for ≥40 V VR with AEC-Q101 qualification.
What is the maximum continuous forward current at 85 °C ambient?
At Tamb = 85 °C, the maximum continuous forward current is derated to approximately 120 mA based on Ptot = 550 mW and VF ≈ 400 mV at that current level. This assumes standard FR4 PCB mounting with 1 cm² cathode copper area and natural convection cooling.
Does the marking 'AP' on the device correspond to BAT54J-Q?
Yes. Per Nexperia's marking table, the top-side laser marking 'AP' unambiguously identifies the BAT54J-Q variant in SOD323F packaging. No other Nexperia part shares this marking code in this package type.
Can BAT54J-Q be used in place of BAT54C-Q in dual-diode configurations?
No. BAT54J-Q is a single diode; BAT54C-Q is a dual common-cathode configuration. Their pinouts, internal topology, and electrical behavior differ fundamentally - substitution would require PCB redesign and functional validation of clamping symmetry and leakage balance.
BAT54J-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2 µA @ 25 V
- Capacitance @ Vr, F:
- 10pF @ 1V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
- Operating Temperature - Junction:
- 150°C
BAT54J-QX FAQ
1.How can I place an order for BAT54J-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54J-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 BAT54J-QX reliable?
The price and inventory of BAT54J-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54J-QX is usually 5 days.
3.What payment methods are accepted for BAT54J-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54J-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54J-QX?
BAT54J-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54J-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 BAT54J-QX?
For technical support, including BAT54J-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54J-QX requirements.
6.How does Aetrix verify that BAT54J-QX is sourced from the original manufacturer or authorized distributors?
All BAT54J-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 BAT54J-QX meets industry standards.
7.What is the process for return or replacement of BAT54J-QX?
All BAT54J-QX units undergo pre-shipment inspection (PSI). If there is an issue with BAT54J-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 BAT54J-QX part is unused and in its original packaging.
Return procedure for BAT54J-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54J-QX Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
