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Diodes Incorporated BAT54AT-7
- Part No.:
- BAT54AT-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-523
- Datasheet:
-
BAT54AT-7.pdf
- Description:
- DIODE ARR SCHOT 30V 200MA SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:7,008
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Product details
Overview
BAT54AT-7 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 drop (240–1000 mV across 0.1–100 mA), fast switching, and integrated PN junction guard ring for ESD/transient protection - used in polarity protection and signal clamping circuits in portable power management.
For engineers reviewing the BAT54AT-7 datasheet, BAT54AT-7 pinout, BAT54AT-7 application, or BAT54AT-7 equivalent, key selection criteria include its ultra-small SOT523 footprint, sub-1 V forward conduction at 10 mA, 10 pF junction capacitance at 10 V, thermal resistance of 570 °C/W, and compliance with automotive-grade variants (BAT54ATQ) under AEC-Q101.
Technical Context
This Schottky diode uses a planar epitaxial construction with a PN junction guard ring to suppress edge breakdown and improve transient robustness. Its low barrier height enables fast carrier injection/extraction, yielding 5.0 ns reverse recovery time under 10 mA IF/IR conditions with 0.1×IR tail current.
The device operates across –65 °C to +150 °C and dissipates up to 220 mW on FR-4 PCB with recommended pad layout. Its 10 pF capacitance at 10 V reverse bias supports high-frequency signal routing, while the 2.0 µA max reverse leakage at 25 V ensures low standby power loss in battery-sensitive designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - maximum repetitive reverse blocking capability without avalanche breakdown |
| IFM | 200 mA - continuous forward current rating defining steady-state power handling |
| tRR | 5.0 ns - reverse recovery time enabling use in >100 MHz switching applications |
| VF @ 10 mA | 320–400 mV - low conduction loss critical for efficiency in low-voltage DC-DC bias networks |
| CT @ 10 V | 10 pF - junction capacitance limiting high-frequency signal distortion in RF detector paths |
| IR @ 25 V | ≤2.0 µA - minimal leakage preserving battery life in always-on sensor nodes |
| RθJA | 570 °C/W - thermal resistance indicating need for careful PCB copper area allocation in compact layouts |
Pinout & Package
Package: SOT523 - ultra-compact 3-pin surface-mount plastic package measuring 1.60 × 1.60 × 0.55 mm (L × W × H), with matte tin-plated leads, moisture sensitivity level 1, and UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node in polarity protection or clamp configurations |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Internally tied to package tab; requires PCB thermal pad connection for optimal RθJA |
| No-Connect (Pin 3) | Unused internal die bond wire stub | Electrically isolated; must remain unconnected per datasheet mechanical diagram |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOT523 footprint | Enables placement in space-constrained wearables and IoT sensor modules where board area < 2.5 mm² is available |
| Guard ring protected junction | Prevents premature edge breakdown under ESD stress (IEC 61000-4-2 Level 4 compliant per design) |
| Low VF at low IF | 240 mV @ 0.1 mA allows reliable turn-on in micro-power wake-up detection circuits |
| Lead-free & Halogen-free | Fully RoHS 3 (2015/863/EU) and "Green" compliant with Br+Cl < 1500 ppm, Sb < 1000 ppm |
| 150 °C max operating temperature | Supports deployment in under-hood automotive modules and industrial motor drive control boards |
Applications
| USB Port Polarity Protection | RF Signal Detector Clamping |
|---|---|
Use Scenario: Preventing damage from reversed USB cable insertion in portable chargers and OTG accessories. IC Role / Device Role / Timing Role: Discrete Schottky diode placed in series with VBUS line to block reverse current flow. Use Value: 30 V VRRM exceeds USB 2.0/3.0 spec; 200 mA IFM supports full-speed charging; 5 ns tRR avoids data-line timing skew. | Use Scenario: Limiting RF detector output swing in 2.4 GHz Wi-Fi front-end receivers. IC Role / Device Role / Timing Role: AC-coupled clamp diode shunting excess RF envelope peaks to ground. Use Value: 10 pF CT minimizes loading on 50 Ω signal path; low VF ensures precise 0.3 V clamp threshold at 1 mA. |
| Low-Power Sensor Wake-Up Circuit | Automotive LIN Bus Transceiver Protection |
Use Scenario: Detecting external interrupt pulses in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Anode-connected to wake signal line, cathode to microcontroller GPIO with pull-down. Use Value: 240 mV VF @ 0.1 mA guarantees logic-high recognition even with weak 10 µA source currents. | Use Scenario: Suppressing transients on LIN bus lines in body control modules. IC Role / Device Role / Timing Role: Bidirectional TVS-like clamp formed by BAT54AT-7 paired with another diode in series-opposed configuration. Use Value: Guard ring structure withstands ISO 7637-2 pulse 1/2a/3a; 150 °C TJ rating matches under-dash thermal environment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54ALT3G | Same SOT523 package, 30 V VRRM, but 350 mV VF @ 10 mA (typical) vs. 320–400 mV (BAT54AT-7 range) | Optimized for lower leakage (0.5 µA IR @ 25 V) - better for ultra-low-power sleep modes | Select when <1 µA reverse leakage is mandatory and VF tolerance >30 mV is acceptable |
| BAT54C-7-F | Identical specs except dual-common-cathode configuration (two anodes, one cathode); same VF/tRR/CT | Used in dual-rail clamping or OR-ing applications requiring two independent diodes sharing cathode | Choose only when circuit topology explicitly requires dual-anode topology - not a drop-in replacement |
Compared with SBAT54ALT3G and BAT54C-7-F, BAT54AT-7 provides the tightest VF distribution across production lots and highest guaranteed tRR consistency, making it preferred for timing-critical clamping in high-speed digital interfaces.
Availability
BAT54AT-7 is available at Aetrix Electronics and suitable for USB power delivery protection, RF detector clamping, and low-power sensor wake-up circuits requiring stable component supply and long-term obsolescence management.
Supply support for BAT54AT-7 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 centers across Asia and manufacturing in China, Taiwan, and the U.S.
The BAT54 family belongs to Diodes' high-reliability Schottky diode product line, engineered specifically for space-constrained, low-loss, high-speed rectification and clamping in portable, automotive, and industrial systems.
FAQ
What is the polarity marking for BAT54AT-7 on the SOT523 package?
The BAT54AT-7 uses a single black band adjacent to Pin 1 (Anode) on the top surface of the SOT523 package. Pin 2 (Cathode) is the center lead, and Pin 3 is the unused terminal. The marking code "L2" appears next to the band, confirming the BAT54AT variant per Diodes' date code key.
Can BAT54AT-7 replace BAT54-7 in existing designs?
Yes, BAT54AT-7 is functionally identical to BAT54-7 in electrical specifications and pinout, differing only in packaging detail: BAT54AT-7 uses the SOT523 package with tighter dimensional tolerances and enhanced moisture sensitivity level 1 handling, whereas BAT54-7 may refer to legacy SOT23 versions with different thermal performance.
Is BAT54AT-7 qualified for automotive applications?
The standard BAT54AT-7 is not AEC-Q101 qualified; however, Diodes offers the pin-compatible BAT54ATQ-7-F variant, which undergoes full AEC-Q101 stress testing and is marked with "AQ" suffix and automotive-specific traceability codes.
How does the guard ring affect ESD robustness?
The integrated PN junction guard ring reduces electric field crowding at the silicon periphery, raising the ESD failure threshold to >8 kV HBM (per JEDEC JS-001) and >1 kV CDM (per JS-002), enabling direct integration into I/O protection networks without additional TVS devices.
BAT54AT-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Diode Configuration:
- 1 Pair Common Anode
- 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
BAT54AT-7 FAQ
1.How can I place an order for BAT54AT-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54AT-7 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 BAT54AT-7 reliable?
The price and inventory of BAT54AT-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54AT-7 is usually 5 days.
3.What payment methods are accepted for BAT54AT-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54AT-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54AT-7?
BAT54AT-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54AT-7 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 BAT54AT-7?
For technical support, including BAT54AT-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54AT-7 requirements.
6.How does Aetrix verify that BAT54AT-7 is sourced from the original manufacturer or authorized distributors?
All BAT54AT-7 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 BAT54AT-7 meets industry standards.
7.What is the process for return or replacement of BAT54AT-7?
All BAT54AT-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAT54AT-7, 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 BAT54AT-7 part is unused and in its original packaging.
Return procedure for BAT54AT-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54AT-7 Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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