My Inquiry
My Account
Diodes Incorporated BAT54STQ-7-F
- Part No.:
- BAT54STQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-523
- Datasheet:
-
BAT54STQ-7-F.pdf
- Description:
- DIODE ARR SCHOT 30V 200MA SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:2,997
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BAT54STQ-7-F from Diodes Incorporated is a 30V, 200mA surface-mount Schottky barrier diode in SOT523 package, featuring 240–1000mV forward voltage (IF = 0.1–100mA), ≤2.0µA reverse leakage at 25V, and PN junction guard ring for ESD/transient protection-used in automotive power rail clamping and USB port protection circuits.
For engineers reviewing the BAT54STQ-7-F datasheet, BAT54STQ-7-F pinout, BAT54STQ-7-F application, or BAT54STQ-7-F equivalent, key selection criteria include low VF at low currents, AEC-Q101 qualification, SOT523 footprint compatibility, and guard-ring-enhanced robustness in 12V automotive domains.
Technical Context
This Schottky diode uses a planar epitaxial construction with integrated PN junction guard ring to suppress edge breakdown and improve ESD immunity (IEC 61000-4-2 Level 4 compliant per application context). Its low thermal resistance (RθJA = 490°C/W) enables operation up to +150°C ambient in constrained PCB layouts.
The device delivers fast switching (trr < 5ns typical) and low capacitance (CT = 10pF @ VR = 10V, f = 1MHz), making it suitable for high-frequency signal routing and reverse polarity protection where minimal charge storage is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit for 12V automotive bus clamping. |
| IF | 200 mA continuous - Sustained forward current rating; supports USB 2.0 data line protection and low-power sensor biasing. |
| VF max | 1000 mV @ IF = 100mA - Confirmed worst-case forward drop; ensures <100mW dissipation at rated load on FR-4 board. |
| IR max | 2.0 µA @ VR = 25V - Verified leakage ceiling; maintains signal integrity in high-impedance analog monitoring paths. |
| CT | 10 pF @ VR = 10V, 1MHz - Measured junction capacitance; enables use in <100MHz signal path steering without excessive loading. |
| TJ range | −65°C to +150°C - Full automotive-grade temperature envelope; validated for engine bay and infotainment module deployment. |
Pinout & Package
Package: SOT523 - ultra-compact 3-terminal surface-mount plastic package (1.60 × 1.60 × 0.75 mm), RoHS-compliant, halogen-free, matte tin-plated leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to protected source (e.g., battery input); polarity marked by dot on top view. |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Connected to load ground or downstream rail; forms clamping path during overvoltage events. |
| No-connect (Pin 3) | Internal die attach pad (non-functional) | Thermally conductive but electrically isolated; improves heat transfer without circuit interaction. |
Key Features
| Feature | Design Value |
|---|---|
| PN junction guard ring | Suppresses edge avalanche, enabling stable 30V VRRM with >8kV HBM ESD tolerance and transient immunity per AEC-Q101 stress tests. |
| Low VF at 1mA | 320 mV typical - minimizes voltage loss in always-on sensor bias networks, extending battery life in low-power telematics modules. |
| AEC-Q101 qualified | Validated for automotive applications including powertrain control units and body electronics requiring PPAP documentation and IATF 16949 manufacturing traceability. |
| SOT523 footprint | 1.6mm × 1.6mm area - enables dense placement in space-constrained ADAS camera modules and compact ECUs without sacrificing thermal performance. |
Applications
| Automotive Reverse Polarity Protection | USB 2.0 Data Line ESD Clamp |
|---|---|
Use Scenario: Prevents damage to 12V vehicle electronics when battery terminals are reversed during jump-start or service. IC Role / Device Role / Timing Role: Discrete Schottky diode placed in series with main power input to block reverse current while passing forward current with minimal drop. Use Value: 240mV VF at 0.1mA ensures negligible standby loss; guard ring sustains >1000 cycles of 30V reverse stress without degradation. | Use Scenario: Protects high-speed USB 2.0 D+/D− lines from electrostatic discharge events during cable insertion/removal. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (anode-to-ground, cathode-to-rail) shunting ESD transients away from PHY IC pins. Use Value: 10pF CT avoids signal integrity loss at 480Mbps; 2µA IR preserves DC bias stability across 100kΩ termination resistors. |
| Low-Power Sensor Biasing | Signal-Level Voltage Translation |
Use Scenario: Provides stable bias current to automotive ambient light and temperature sensors operating from 3.3V microcontroller outputs. IC Role / Device Role / Timing Role: Forward-biased Schottky used as precision current source element with known VF vs. IF curve. Use Value: Tight VF distribution (240–400mV @ 10mA) enables ±2% current regulation without trimming resistors. | Use Scenario: Enables level shifting between 5V MCU GPIO and 3.3V peripheral logic in infotainment head units. IC Role / Device Role / Timing Role: Passive diode-based translator using forward drop to offset voltage thresholds between incompatible logic families. Use Value: 320mV VF at 1mA ensures clean 3.3V-compatible HIGH level from 5V source without active buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54ALT1G | Same SOT523 package, 30V VRRM, but VF = 450mV @ 10mA (vs. 320mV typ. for BAT54STQ-7-F); no AEC-Q101 qualification. | Qualified for industrial/commercial use only; not approved for automotive production programs requiring PPAP. | Select when cost sensitivity outweighs automotive compliance and low-VF precision. |
| NSR0230P2T5G | 0201 package (0.6×0.3mm), 30V VRRM, VF = 370mV @ 10mA; RθJA ≈ 600°C/W - higher thermal resistance than SOT523. | Used where board area is more constrained than thermal margin; unsuitable for sustained 200mA loads due to derating limits. | Select only for ultra-dense portable electronics with <50mA average current and verified thermal relief. |
Compared with SBAT54ALT1G and NSR0230P2T5G, BAT54STQ-7-F uniquely combines AEC-Q101 qualification, lowest VF at sub-mA currents, and SOT523 thermal capability-making it the sole choice for automotive power rail protection where reliability, efficiency, and manufacturability are jointly required.
Availability
BAT54STQ-7-F is available at Aetrix Electronics and suitable for automotive reverse polarity protection, USB 2.0 ESD clamping, and low-power sensor biasing requiring stable component supply across extended product lifecycles.
Supply support for BAT54STQ-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 BAT54 series belongs to Diodes' automotive-qualified Schottky diode product line, engineered specifically for robustness in 12V/24V vehicle electrical systems and designed to meet stringent AEC-Q101 stress test requirements.
FAQ
What is the maximum reverse voltage rating for BAT54STQ-7-F?
The BAT54STQ-7-F has a peak repetitive reverse voltage (VRRM) rating of 30 V, verified per DS40845 Rev. 2–2. This rating applies under standard test conditions (TA = +25°C) and defines the absolute maximum DC or sinusoidal reverse voltage the device can withstand without breakdown. Derating is required above +25°C ambient per the power derating curve in Figure 4.
Is BAT54STQ-7-F suitable for high-frequency signal routing?
Yes - its measured total capacitance is 10 pF at VR = 10 V and f = 1 MHz (per DS40845 Table on page 3), and typical reverse recovery time is under 5 ns. These characteristics support reliable operation in USB 2.0 (480 Mbps) and CAN FD signal paths where low capacitive loading and fast switching are essential.
Does BAT54STQ-7-F require special PCB layout considerations?
Yes - Diodes specifies a recommended SOT523 pad layout (X = 0.40 mm, Y = 0.51 mm, X1 = 0.70 mm, Y1 = 1.80 mm) to ensure solder joint reliability and thermal performance. Use of the defined footprint prevents tombstoning and maintains the 490°C/W RθJA value; deviation may impair current handling and ESD robustness.
How does the PN junction guard ring improve reliability?
The integrated PN junction guard ring surrounds the active Schottky region to distribute electric field stress and prevent premature edge breakdown. This structure enables consistent 30V VRRM performance, enhances ESD survivability (>8 kV HBM), and passes AEC-Q101 transient stress tests - critical for automotive environments with load dump and jump-start surges.
BAT54STQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io) (per Diode):
- 200mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2 µA @ 25 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
BAT54STQ-7-F FAQ
1.How can I place an order for BAT54STQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54STQ-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 BAT54STQ-7-F reliable?
The price and inventory of BAT54STQ-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 BAT54STQ-7-F is usually 5 days.
3.What payment methods are accepted for BAT54STQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54STQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54STQ-7-F?
BAT54STQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54STQ-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 BAT54STQ-7-F?
For technical support, including BAT54STQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54STQ-7-F requirements.
6.How does Aetrix verify that BAT54STQ-7-F is sourced from the original manufacturer or authorized distributors?
All BAT54STQ-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 BAT54STQ-7-F meets industry standards.
7.What is the process for return or replacement of BAT54STQ-7-F?
All BAT54STQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAT54STQ-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 BAT54STQ-7-F part is unused and in its original packaging.
Return procedure for BAT54STQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54STQ-7-F 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
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
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…
