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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

Diodes Incorporated BAT54S-7

Name: BAT54S-7
Brand: Diodes Incorporated
SKU: BAT54S-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BAT54S-7

Manufacturer:: Diodes Incorporated

Category:: Diode Arrays

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BAT54S-7.pdf

Description:: DIODE ARR SCHOT 30V 200MA SOT233

Quantity:: RFQ Add To RFQ list

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Inventory:3,641

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Product details

Overview

BAT54S-7 from Diodes Incorporated is a dual-series Schottky barrier diode in SOT23 package, configured as two anode-common diodes sharing one cathode terminal, with 30 V peak reverse voltage, 200 mA average forward current, and 0.8 V max forward voltage at 100 mA. It delivers fast switching (5 ns reverse recovery) and low-loss rectification in space-constrained DC-DC converter outputs and polarity protection circuits.

For engineers reviewing the BAT54S-7 datasheet, BAT54S-7 pinout, BAT54S-7 application, or BAT54S-7 equivalent, key selection criteria include dual-anode common topology, 2 µA max reverse leakage at 25 V, 10 pF junction capacitance at 1 V, thermal resistance of 500 °C/W (J-A), and JEDEC-qualified reliability for industrial and automotive-derivative designs.

Technical Context

The BAT54S-7 integrates two independent Schottky diodes in a single SOT23-3 package with shared cathode (Pin 3) and separate anodes (Pins 1 and 2). Its low forward voltage drop enables high-efficiency clamping and OR-ing functions in 3.3 V and 5 V rail systems.

Designed with PN junction guard ring, it provides transient suppression and ESD robustness per IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact). Thermal performance is specified for FR-4 PCB mounting with recommended pad layout, supporting continuous operation up to +125 °C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	30 V - maximum blocking voltage before avalanche; suitable for 24 V system inputs and 5 V logic-level clamping
I_O	200 mA - continuous DC current per diode; supports low-power signal routing and bias supply paths
V_F max	0.8 V @ 100 mA - low conduction loss reduces heat generation in compact layouts
I_R max	2 µA @ 25 V - minimal leakage preserves battery life in always-on monitoring nodes
t_RR	5 ns - enables use in >10 MHz switching applications without tail current penalty
C_T	10 pF @ 1 V - low junction capacitance minimizes signal distortion in RF detector and sampling circuits
R_θJA	500 °C/W - requires thermal-aware PCB layout (e.g., copper pour under Pin 3) for sustained 150 mW dissipation

Pinout & Package

Package: SOT23-3 (Standard), surface-mount, lead-free, RoHS-compliant, "Green" molded plastic housing (UL 94V-0), 0.008 g mass.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Anode of Diode 1	Input node for first Schottky path; connects to source in reverse-polarity protection
Pin 2	Anode of Diode 2	Independent input node; enables dual-rail OR-ing or redundant signal steering
Pin 3	Common Cathode	Shared output node; must be routed to lowest-impedance ground or supply return

Key Features

Feature	Design Value
Dual-anode common-cathode topology	Enables compact dual-path rectification or redundancy without discrete pairing
PN junction guard ring	Provides built-in ESD immunity (IEC 61000-4-2 Level 4) and transient surge tolerance
JEDEC-qualified reliability	Validated for high-reliability industrial and automotive-derivative applications per AEC-Q standards
Halogen- and antimony-free "Green" construction	Meets RoHS 3 (2015/863/EU) with <900 ppm Br/Cl and <1000 ppm Sb compounds

Applications

Power Rail OR-ing

ESD-Protected Signal Clamping

Use Scenario: Dual 3.3 V power sources (e.g., main + backup battery) feeding a microcontroller rail.

IC Role / Device Role: Dual-anode Schottky diode enabling automatic source selection without control logic.

Use Value: Prevents backfeed between supplies while maintaining <0.8 V dropout and 5 ns switching for fast load transients.

Use Scenario: USB data lines (D+/D−) exposed to external connectors in portable medical devices.

IC Role / Device Role: Low-capacitance clamping diode shunting ESD pulses to V_CC/GND rails.

Use Value: 10 pF capacitance avoids signal integrity degradation; guard ring ensures ±8 kV contact ESD survival.

Polarity Protection

Low-Voltage Signal Steering

Use Scenario: Input stage of a 5 V sensor interface board where incorrect connector insertion may occur.

IC Role / Device Role: Anode-to-input, cathode-to-load configuration blocks reverse voltage up to 30 V.

Use Value: 0.8 V forward drop minimizes voltage loss in battery-powered systems; SOT23 footprint saves board area vs. discrete solutions.

Use Scenario: Multiplexing analog sensor outputs (e.g., thermistor, photodiode) into a shared ADC channel.

IC Role / Device Role: Anode-switched diode isolates inactive sensors to prevent loading and crosstalk.

Use Value: 2 µA leakage at 25 V ensures <0.1% measurement error in high-impedance (<1 MΩ) sensing paths.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Schottky diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SBAT54SWT1G	Same SOT23-3 package; 30 V V_RRM, but 0.95 V V_F max @ 100 mA and 5 µA I_R max @ 25 V	Higher forward drop increases conduction loss; higher leakage limits use in ultra-low-power sleep modes	Select when cost sensitivity outweighs efficiency requirements and ESD rating is secondary
BAT54C-7-F	Same die family, but cathode-common configuration (Pin 1 = cathode, Pins 2/3 = anodes); identical electrical specs	Requires PCB layout revision to accommodate reversed terminal assignment; not drop-in compatible	Choose only if existing design uses cathode-common topology and dual-anode layout is unavailable

Compared with SBAT54SWT1G and BAT54C-7-F, the BAT54S-7 offers the lowest forward voltage and tightest leakage spec in its dual-anode configuration, making it optimal for high-efficiency OR-ing and precision clamping where layout flexibility permits anode-common routing.

Availability

BAT54S-7 is available at Aetrix Electronics and suitable for power rail OR-ing, ESD-protected signal clamping, polarity protection, and low-voltage signal steering requiring stable component supply across industrial automation, medical instrumentation, and consumer electronics programs.

Supply support for BAT54S-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, manufacturing, and sales operations across Asia, Europe, and North America.

The BAT54 series belongs to Diodes' general-purpose Schottky diode product line, engineered for high-speed, low-loss applications in power management, signal conditioning, and interface protection across consumer, industrial, and automotive-derivative markets.

FAQ

What is the pin configuration of BAT54S-7?

Pin 1 is Anode 1, Pin 2 is Anode 2, and Pin 3 is the common Cathode. This anode-common topology differs from BAT54C-7-F (cathode-common) and BAT54A-7-F (dual-cathode). The marking code "KL4" on the device top confirms BAT54S identification per Diodes' datasheet DS11005 Rev. 34.

Does BAT54S-7 meet automotive qualification standards?

The standard BAT54S-7 is qualified to JEDEC reliability standards and rated for industrial temperature range (–65 °C to +150 °C), but it is not AEC-Q200 qualified. For automotive applications, Diodes offers the pin-compatible BAT54SQ variant, which undergoes additional stress testing per AEC-Q200 and is documented in a separate datasheet.

How does the PN junction guard ring improve robustness?

The integrated PN junction guard ring surrounds the active Schottky region to distribute electric field stress during transient events, reducing localized avalanche and preventing premature breakdown. This structure enables the device to withstand ±8 kV contact ESD (IEC 61000-4-2) and improves surge immunity in unregulated input stages without external TVS components.

Can BAT54S-7 replace BAT54-7 in existing designs?

No - BAT54-7 is a single Schottky diode in SOT23-3, while BAT54S-7 contains two diodes with shared cathode. Substitution would require circuit redesign to utilize both anodes and verify that the common cathode connection meets system grounding and thermal requirements. Electrical parameters (V_RRM, I_O, V_F) match, but topology is incompatible.

BAT54S-7 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:: Discontinued at Digi-Key

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:: 800 mV @ 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 ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

BAT54S-7 FAQ

1.How can I place an order for BAT54S-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for BAT54S-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 BAT54S-7 reliable?

The price and inventory of BAT54S-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54S-7 is usually 5 days.

3.What payment methods are accepted for BAT54S-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54S-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BAT54S-7?

BAT54S-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BAT54S-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 BAT54S-7?

For technical support, including BAT54S-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54S-7 requirements.

6.How does Aetrix verify that BAT54S-7 is sourced from the original manufacturer or authorized distributors?

All BAT54S-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 BAT54S-7 meets industry standards.

7.What is the process for return or replacement of BAT54S-7?

All BAT54S-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAT54S-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 BAT54S-7 part is unused and in its original packaging.

Return procedure for BAT54S-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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