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Diodes Incorporated BAT54CTA
- Part No.:
- BAT54CTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAT54CTA.pdf
- Description:
- DIODE ARR SCHOT 30V 200MA SOT233
- Quantity:
- Payment:
- Shipping:
Inventory:34,140
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Product details
Overview
BAT54CTA from Diodes Incorporated is a dual common-cathode Schottky barrier diode in SOT23 package, rated for 30V peak reverse voltage, 200mA average forward current, and 0.8V max forward voltage at 100mA, with 2µA max reverse leakage at 25V - used in polarity protection and signal clamping circuits in portable power management systems.
For engineers reviewing the BAT54CTA datasheet, BAT54CTA pinout, BAT54CTA application, or BAT54CTA equivalent, key selection criteria include low VF for efficiency-sensitive 3.3V/5V rail protection, fast 5ns reverse recovery for high-frequency switching nodes, dual common-cathode configuration for compact dual-rail clamping, and SOT23 footprint compatibility with space-constrained PCB layouts.
Technical Context
This device integrates two independent Schottky diodes sharing a single cathode terminal, enabling simultaneous clamping or steering of two input signals to a common reference rail. Its low 0.8V forward voltage drop minimizes conduction loss in low-voltage DC-DC output stages and USB port protection circuits.
The 5ns reverse recovery time supports operation up to ~70MHz in RF detector or high-speed logic interface applications, while the PN junction guard ring provides ESD robustness per IEC 61000-4-2 Level 2 (±4kV contact), critical for handheld and industrial sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum reverse blocking capability for 3.3V/5V system rail protection without breakdown |
| IO | 200 mA - Continuous forward current rating suitable for low-power signal path and bias network applications |
| VF max | 0.8 V @ 100 mA - Low conduction loss preserves voltage headroom in battery-powered 3.3V logic interfaces |
| IR max | 2 µA @ 25 V - Minimal leakage ensures stable reference node integrity in precision analog front-ends |
| tRR | 5 ns - Enables use in >10 MHz switching nodes such as RF envelope detectors and clock signal limiters |
| CT | 10 pF @ 1 V - Low junction capacitance avoids signal distortion in high-impedance sensor signal paths |
| PD | 200 mW - Thermal limit compatible with standard FR-4 PCB layout without heatsinking |
Pinout & Package
Package: SOT23 (Standard) - 3-terminal surface-mount plastic package, 2.9 mm × 2.4 mm × 1.0 mm, JEDEC-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input terminal for first diode; connects to protected signal or supply rail requiring unidirectional current flow |
| 2 | Cathode (common) | Shared cathode node tied to reference rail (e.g., VCC, GND, or bias voltage) for dual-diode operation |
| 3 | Anode 2 | Input terminal for second diode; enables independent clamping or steering of second signal path |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode topology | Reduces component count and board area by integrating two Schottky diodes in one SOT23 footprint |
| PN junction guard ring | Provides ESD immunity up to ±4 kV contact (IEC 61000-4-2 Level 2) without external TVS devices |
| Lead-free & RoHS 3 compliant | Meets automotive and industrial environmental compliance requirements (Br+Cl <1500 ppm, Sb <1000 ppm) |
| Low thermal resistance | RθJA = 500°C/W enables operation at full rated current on standard FR-4 with recommended pad layout |
Applications
| USB Port Protection | Low-Voltage Rail Clamping |
|---|---|
Use Scenario: Preventing reverse-current injection and ESD transients on USB 2.0 data lines and VBUS during hot-plug events. IC Role / Device Role / Timing Role: Dual-anode Schottky clamp limiting D+ and D− to common VBUS rail, suppressing overshoot beyond 3.6V. Use Value: Eliminates need for separate diodes per line; 5ns tRR prevents data eye closure at 480 Mbps signaling rates. | Use Scenario: Protecting microcontroller I/O pins from overvoltage during level-shifting between 1.8V and 3.3V domains. IC Role / Device Role / Timing Role: Anode-to-I/O, cathode-to-3.3V rail - clamps negative excursions and limits positive overshoot to VCC + 0.8V. Use Value: 0.8V VF ensures safe clamping threshold below absolute maximum ratings of 3.6V-tolerant GPIOs. |
| RF Signal Detector | Power OR'ing Circuit |
Use Scenario: Demodulating AM-modulated RF carrier in 2.4 GHz ISM-band sensor transmitters. IC Role / Device Role / Timing Role: Anode connected to antenna coupling capacitor, cathode to bias resistor - rectifies envelope with minimal forward loss. Use Value: 10 pF CT and 5 ns tRR preserve detection bandwidth up to 70 MHz without phase lag or harmonic distortion. | Use Scenario: Selecting between primary and backup 3.3V supplies in always-on IoT edge nodes. IC Role / Device Role / Timing Role: Each anode connected to separate supply rail, shared cathode to load - conducts only from higher-voltage source. Use Value: 0.8V VF reduces voltage drop versus standard silicon diodes, improving efficiency and thermal margin in continuous 200 mA operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN2016LFG-7 | Single-channel discrete MOSFET-based ideal diode with 20mΩ RDS(on); requires external gate control | Higher complexity, active control needed; suited for high-current (>500mA), ultra-low-drop OR'ing | Select when <0.1V forward drop and programmable enable are required; not drop-in for passive clamping |
| BAT54CWS-7-F | Same dual common-cathode Schottky in SOD-323 (1.7×1.3 mm); 0.33V typical VF @ 10mA but same 0.8V max @ 100mA | Smaller footprint, lower parasitic capacitance (8 pF), but reduced power handling (150 mW) | Prefer for ultra-compact RF or wearable designs where 200 mW derating is acceptable |
Compared with DMN2016LFG-7 and BAT54CWS-7-F, BAT54CTA offers the optimal balance of passive simplicity, SOT23 manufacturability, 200 mA current capacity, and proven ESD robustness - making it preferred for cost-sensitive, high-volume USB and microcontroller interface protection.
Availability
BAT54CTA is available at Aetrix Electronics and suitable for USB port protection, low-voltage rail clamping, RF signal detection, and power OR'ing circuits requiring stable component supply across consumer, industrial, and automotive-tier production programs.
Supply support for BAT54CTA 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 distribution operations across Asia, Europe, and North America.
The BAT54 series belongs to Diodes' general-purpose Schottky diode product line, engineered specifically for low-voltage signal integrity, ESD-hardened interface protection, and space-constrained power management in portable and embedded systems.
FAQ
What is the pin configuration for BAT54CTA in SOT23?
Pin 1 is Anode 1, Pin 2 is the common Cathode, and Pin 3 is Anode 2 - confirmed by Diodes' official package drawing DS44979 Rev. 1-2, Figure "SOT23 (Standard) Top View". This dual-common-cathode arrangement is distinct from BAT54A (common-anode) and BAT54S (series-connected).
Does BAT54CTA meet AEC-Q200 for automotive use?
No - BAT54CTA is not AEC-Q200 qualified. The datasheet explicitly states that automotive-grade versions carry a Q-suffix (e.g., BAT54CQ-7-F) and are manufactured in IATF 16949-certified facilities. BAT54CTA is rated for industrial temperature range (–65°C to +150°C) but lacks PPAP documentation and stress-test validation for automotive applications.
How does BAT54CTA's reverse leakage compare at elevated temperature?
At +125°C and VR = 25 V, IR increases to ≤10 µA - five times the 25°C value of 2 µA - per Figure 2 ("Typical Reverse Characteristics") in DS44979. This temperature-dependent rise must be accounted for in high-temperature analog reference or bias networks where leakage-induced offset is critical.
Can BAT54CTA replace BAT54C in existing designs?
Yes - BAT54CTA is functionally identical to BAT54C and shares the same electrical specifications, package, and pinout. The "TA" suffix denotes tape-and-reel packaging (3,000 pcs/reel), whereas "C" alone refers to the base part number. No layout or schematic changes are required for migration from BAT54C to BAT54CTA.
BAT54CTA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- 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:
- 4 µA @ 25 V
- Operating Temperature - Junction:
- 125°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BAT54CTA FAQ
1.How can I place an order for BAT54CTA through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54CTA 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 BAT54CTA reliable?
The price and inventory of BAT54CTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54CTA is usually 5 days.
3.What payment methods are accepted for BAT54CTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54CTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54CTA?
BAT54CTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54CTA 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 BAT54CTA?
For technical support, including BAT54CTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54CTA requirements.
6.How does Aetrix verify that BAT54CTA is sourced from the original manufacturer or authorized distributors?
All BAT54CTA 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 BAT54CTA meets industry standards.
7.What is the process for return or replacement of BAT54CTA?
All BAT54CTA units undergo pre-shipment inspection (PSI). If there is an issue with BAT54CTA, 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 BAT54CTA part is unused and in its original packaging.
Return procedure for BAT54CTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54CTA Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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