My Inquiry
My Account
Diodes Incorporated BAT54ST-7-F
- Part No.:
- BAT54ST-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-523
- Datasheet:
-
BAT54ST-7-F.pdf
- Description:
- DIODE ARR SCHOT 30V 200MA SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:296,276
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BAT54ST-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT523 package, rated for 30 V peak reverse voltage, 200 mA continuous forward current, and 5.0 ns reverse recovery time. It delivers low forward voltage (240–1000 mV across 0.1–100 mA), ultra-fast switching, and integrated PN junction guard ring for ESD/transient protection - deployed in portable power management and USB interface protection circuits.
For engineers reviewing the BAT54ST-7-F datasheet, BAT54ST-7-F pinout, BAT54ST-7-F application, or BAT54ST-7-F equivalent, key selection criteria include its 30 V VRRM rating, sub-1 V VF at 10 mA, 10 pF capacitance at 10 V, 570 °C/W thermal resistance, and SOT523 footprint compatibility with space-constrained PCB layouts.
Technical Context
This Schottky diode uses a planar epitaxial construction with a PN junction guard ring to suppress edge leakage and improve transient robustness. Its low barrier height enables fast carrier injection/extraction, yielding 5.0 ns reverse recovery time under IF = IR = 10 mA conditions.
The device operates across –65 °C to +150 °C and dissipates up to 220 mW on FR-4 board with recommended pad layout. Its 10 pF total capacitance at 10 V reverse bias supports high-frequency signal routing and EMI filtering in USB 2.0 and low-voltage logic interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - maximum repetitive reverse blocking voltage before breakdown |
| IF(AV) | 200 mA - continuous DC forward current capability on standard FR-4 PCB |
| VF @ 10 mA | 320 mV typical - enables <1 V drop in 3.3 V/5 V rail clamping and OR-ing applications |
| tRR | 5.0 ns - supports >100 MHz switching in signal routing and data line protection |
| CT @ 10 V | 10 pF - minimizes signal distortion in high-speed digital I/O and USB D+/D− lines |
| RθJA | 570 °C/W - defines thermal derating slope: usable up to ~150 °C ambient with 220 mW PD limit |
| IR @ 25 V | 2.0 µA max - ensures low standby leakage in battery-backed and always-on circuits |
Pinout & Package
Package: SOT523 - ultra-small plastic surface-mount package (1.60 × 1.60 × 0.55 mm), lead-free matte tin-plated terminals, moisture sensitivity level 1, weight ≈ 0.002 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry | Connected to higher-potential node in clamping, OR-ing, or polarity protection |
| Cathode (Pin 2) | Forward current exit / reverse bias terminal | Typically tied to ground or lower-rail reference; forms low-impedance path during reverse transients |
| Case / Exposed Pad (Pin 3) | Non-electrical mechanical anchor | No internal connection; serves only as thermal and mechanical stabilization point on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF | 240 mV min at 0.1 mA - reduces conduction loss in low-current sensing and bias networks |
| Guard ring protection | Integrated PN junction ring - suppresses surface leakage and improves ESD robustness to >8 kV HBM |
| SOT523 footprint | 1.60 × 1.60 mm outline - enables placement in <2.0 mm² board area, ideal for wearables and TWS earbuds |
| Green compliance | Halogen- and antimony-free, RoHS 3 compliant (<900 ppm Br/Cl, <1000 ppm Sb) - meets automotive and medical regulatory requirements |
Applications
| USB Data Line Protection | Power Rail OR-ing |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines from ESD events and overvoltage coupling in portable chargers and OTG adapters. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed between data line and VBUS or ground, leveraging low CT and fast tRR. Use Value: 10 pF capacitance avoids signal integrity degradation at 480 Mbps; guard ring sustains >8 kV HBM without parametric shift. | Use Scenario: Selecting between two 3.3 V power sources (e.g., battery and USB) in IoT sensor nodes with zero-voltage-drop path control. IC Role / Device Role / Timing Role: Low-VF Schottky used in discrete OR-ing configuration to minimize voltage drop and power loss. Use Value: 320 mV VF at 10 mA cuts conduction loss by >50% vs. standard silicon diodes, extending battery runtime. |
| Low-Voltage Logic Level Shifting | Reverse Polarity Protection |
Use Scenario: Translating 1.8 V logic signals to 3.3 V domains in mixed-voltage microcontroller peripherals. IC Role / Device Role / Timing Role: Passive clamp diode biased at intermediate voltage to limit swing and prevent latch-up. Use Value: Sub-1 V VF ensures accurate threshold alignment; 5 ns tRR prevents timing skew in 10–50 MHz clock/data paths. | Use Scenario: Preventing damage from accidental battery reversal in compact medical monitors and handheld test equipment. IC Role / Device Role / Timing Role: Series-connected anode-to-load cathode, blocking reverse current while passing forward supply. Use Value: 30 V VRRM withstands 24 V system surges; 200 mA IF rating supports >100 mA load currents with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54ALT-7-F | Same SOT523 package, identical electrical specs, but optimized for automotive AEC-Q101 qualification | Required for automotive infotainment and body control modules needing temperature cycling validation | Select when ISO/TS 16949 production traceability and extended temperature validation are mandatory |
| NSR0230HT1G | Lower VF (220 mV typ @ 10 mA), same 30 V VRRM, but SOD-523 package (slightly larger 1.7 × 1.3 mm) | Acceptable where 0.1 mm pad tolerance relaxation is permitted and lower VF is prioritized | Choose if 20 mV VF reduction justifies requalification of solder profile and board space allocation |
Compared with SBAT54ALT-7-F and NSR0230HT1G, BAT54ST-7-F offers optimal balance of industrial-grade reliability, minimal footprint, and validated performance in consumer and industrial USB/power interfaces - without automotive overhead or package size trade-offs.
Availability
BAT54ST-7-F is available at Aetrix Electronics and suitable for USB interface protection, portable power OR-ing, and low-voltage logic translation requiring stable component supply, consistent lead-free sourcing, and full RoHS 3 compliance.
Supply support for BAT54ST-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, serving industrial, computing, communications, and consumer markets with high-reliability components.
The BAT54 series belongs to Diodes' precision Schottky diode product line, engineered specifically for ultra-low VF, fast switching, and robust ESD protection in space-constrained portable and interface applications.
FAQ
What is the polarity marking for BAT54ST-7-F?
The BAT54ST-7-F uses standard SOT523 polarity: Pin 1 (anode) is marked with a triangle or beveled edge on the top surface; Pin 2 (cathode) is unmarked and connects to the cathode bar visible in the package outline diagram. The cathode side aligns with the flat edge of the SOT523 body.
Can BAT54ST-7-F replace BAT54-7-F in existing designs?
Yes - BAT54ST-7-F shares identical electrical specifications, SOT523 package dimensions, and pinout with BAT54-7-F. The "ST" suffix denotes the same die variant as the base BAT54, with no functional or thermal differences; it is a direct replacement with identical layout and soldering requirements.
Is BAT54ST-7-F qualified for automotive use?
No - BAT54ST-7-F is not AEC-Q101 qualified. For automotive applications, Diodes specifies the BAT54STQ-7-F variant, which undergoes additional stress testing including temperature cycling, HTOL, and ESD validation per AEC-Q101 standards.
What is the maximum junction temperature during continuous operation?
The absolute maximum junction temperature is +150 °C. Under 200 mA DC forward current on a standard FR-4 board with recommended pad layout, junction temperature rise is calculated as TJ = TA + (PD × RθJA); with PD = 200 mA × 0.32 V = 64 mW, ΔTJ = 64 mW × 570 °C/W ≈ 36 °C - allowing safe operation up to +114 °C ambient.
BAT54ST-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):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 25 V
- Operating Temperature - Junction:
- -65°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
BAT54ST-7-F FAQ
1.How can I place an order for BAT54ST-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54ST-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 BAT54ST-7-F reliable?
The price and inventory of BAT54ST-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 BAT54ST-7-F is usually 5 days.
3.What payment methods are accepted for BAT54ST-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54ST-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54ST-7-F?
BAT54ST-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54ST-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 BAT54ST-7-F?
For technical support, including BAT54ST-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54ST-7-F requirements.
6.How does Aetrix verify that BAT54ST-7-F is sourced from the original manufacturer or authorized distributors?
All BAT54ST-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 BAT54ST-7-F meets industry standards.
7.What is the process for return or replacement of BAT54ST-7-F?
All BAT54ST-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAT54ST-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 BAT54ST-7-F part is unused and in its original packaging.
Return procedure for BAT54ST-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54ST-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…
