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

Diodes Incorporated BAT54S-7-F

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

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Part No.:: BAT54S-7-F

Manufacturer:: Diodes Incorporated

Category:: Diode Arrays

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

Datasheet:: BAT54S-7-F.pdf

Description:: DIODE ARR SCHOT 30V 200MA SOT233

Quantity:: RFQ Add To RFQ list

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Inventory:120,833

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Product details

Overview

BAT54S-7-F from Diodes Incorporated is a dual-series Schottky barrier diode in SOT23 package, featuring two independent anode-cathode junctions sharing a common cathode terminal, 30 V peak reverse voltage, 200 mA average forward current, and 0.8 V max forward voltage at 100 mA. It delivers fast switching (5.0 ns reverse recovery) with PN junction guard ring for ESD/transient protection, used in polarity protection and signal clamping in USB interface circuits.

For engineers reviewing the BAT54S-7-F datasheet, BAT54S-7-F pinout, BAT54S-7-F application, or BAT54S-7-F equivalent, key selection criteria include common-cathode dual configuration, low VF at low IF, IR ≤ 2 µA at 25 V, thermal resistance of 500 °C/W, and JEDEC-qualified reliability for industrial and automotive-adjacent designs.

Technical Context

The BAT54S-7-F integrates two Schottky diodes in a single SOT23-3 package with shared cathode (pin 3), enabling compact dual-channel clamping or polarity control without discrete pairing. Its guard-ring structure suppresses surface leakage and improves ESD robustness beyond standard Schottky devices.

It operates across –65 °C to +150 °C with 200 mW power dissipation on FR-4 board, and exhibits 10 pF junction capacitance at 1 V reverse bias-critical for high-frequency signal routing in USB 2.0 and I²C bus protection.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	30 V - supports input rail protection up to 24 V systems with margin
I_O	200 mA - sufficient for low-power signal line clamping and biasing
V_F max	0.8 V @ 100 mA - minimizes conduction loss in battery-powered clamping paths
I_R max	2.0 µA @ 25 V - ensures low standby leakage in always-on monitoring circuits
t_RR	5.0 ns - enables clean switching in 10–50 MHz digital signal conditioning
C_T	10 pF @ 1 V - compatible with USB 2.0 (480 Mbps) and I²C (1 MHz) signal integrity
R_θJA	500 °C/W - requires minimal copper area for thermal management on standard PCBs

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
1	Anode 1	Input node for first diode path; connects to protected signal or supply rail
2	Anode 2	Input node for second diode path; enables dual independent clamping
3	Cathode (common)	Shared return path to reference (e.g., V_CC or ground); defines clamping threshold

Key Features

Feature	Design Value
Dual common-cathode Schottky structure	Reduces board space by 40% vs. two discrete BAT54 diodes; simplifies layout for bidirectional signal lines
PN junction guard ring	Improves ESD tolerance to >8 kV HBM and suppresses surface leakage under humidity stress
Low 0.8 V V_F at 100 mA	Enables efficient 3.3 V rail clamping with <100 mV headroom loss
JEDEC-qualified reliability	Validated per AEC-Q200 stress tests-suitable for industrial control and infotainment subsystems
Halogen- and antimony-free "Green" construction	Meets IEC 61249-2-21:2017; Br+Cl <1500 ppm, Sb <1000 ppm

Applications

USB Data Line Protection

I²C Bus Clamping

Use Scenario: Protecting D+ and D− lines against ESD events and overvoltage transients in portable USB peripherals.

IC Role / Device Role: Dual-series Schottky clamp referenced to V_CC, limiting voltage swing to ~3.3 V + V_F.

Use Value: Prevents damage to USB PHY ICs while maintaining signal edge integrity up to 480 Mbps.

Use Scenario: Clamping SDA/SCL lines during hot-plug or level-shifting between 3.3 V and 5 V domains.

IC Role / Device Role: Bidirectional voltage limiter using common-cathode configuration tied to higher rail.

Use Value: Eliminates need for external pull-up resistors on both sides; reduces bus rise time distortion.

Power Rail Polarity Protection

Signal-Level Translation Interface

Use Scenario: Preventing reverse-current flow when connecting external 5 V adapters or battery packs to embedded systems.

IC Role / Device Role: Low-loss series diode on V_IN path, with second diode reserved for auxiliary sensing or redundancy.

Use Value: Adds <0.8 V drop at full load-lower than MOSFET-based solutions requiring gate drive.

Use Scenario: Interfacing 1.8 V logic outputs to 3.3 V inputs in mixed-voltage microcontroller systems.

IC Role / Device Role: Forward-biased clamp establishing safe high-level threshold (~2.5 V) for 3.3 V receiver.

Use Value: Avoids level-shifter IC cost and propagation delay; supports >10 MHz toggle rates.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SBAT54SWT1G	Same SOT23-3 common-cathode topology; VF = 0.8 V @ 100 mA, but IR = 5 µA @ 25 V (2.5× higher leakage)	Less suitable for low-leakage always-on monitoring nodes	Prefer BAT54S-7-F where standby current budget is constrained
BAT54C-7-F	Common-anode configuration (pins 1&2 = cathodes, pin 3 = anode); identical electrical specs otherwise	Requires inverted reference connection-unsuitable for V_CC-referenced clamping	Select BAT54S-7-F when clamping to positive rail; BAT54C-7-F only for ground-referenced use

Compared with SBAT54SWT1G and BAT54C-7-F, BAT54S-7-F uniquely provides low-leakage common-cathode operation ideal for V_CC-tied clamping in USB/I²C, while avoiding the layout compromises of alternate topologies or higher IR trade-offs.

Availability

BAT54S-7-F is available at Aetrix Electronics and suitable for USB interface protection, I²C bus clamping, power rail polarity safeguarding, and signal-level translation requiring stable component supply and consistent parametric performance across production lots.

Supply support for BAT54S-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 the Americas.

The BAT54 family belongs to Diodes' general-purpose Schottky diode product line, engineered for high-speed, low-VF signal and power conditioning in space-constrained consumer, computing, and industrial applications.

FAQ

What is the pin configuration of BAT54S-7-F?

Pin 1 is Anode 1, Pin 2 is Anode 2, and Pin 3 is the common Cathode. This configuration allows both diodes to clamp toward the same reference voltage-typically V_CC-making it ideal for bidirectional data line protection. The marking side shows "KL4" for BAT54S identification.

Does BAT54S-7-F meet automotive qualification standards?

No-BAT54S-7-F is qualified to industrial-grade JEDEC standards (AEC-Q200 referenced), but not certified for automotive use. For automotive applications, Diodes offers the pin-compatible BAT54SQ variant, which undergoes extended temperature cycling, HTOL, and ESD testing per AEC-Q101 requirements.

Can BAT54S-7-F replace two individual BAT54 diodes?

Yes-BAT54S-7-F integrates two BAT54-equivalent Schottky diodes in one SOT23-3 package with shared cathode. It matches the electrical specs (V_RRM, I_O, V_F, t_RR) and replaces two discrete BAT54s in clamping or polarity protection, reducing footprint by ~60% and eliminating matching variance.

What is the maximum operating temperature for continuous use?

The BAT54S-7-F supports continuous operation from –65 °C to +150 °C junction temperature. At ambient temperatures above 75 °C, derating applies: power dissipation must be reduced linearly from 200 mW at 25 °C to zero at 125 °C, per the published derating curve in Figure 4 of DS11005 Rev. 34.

BAT54S-7-F 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 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-F FAQ

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

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

The price and inventory of BAT54S-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 BAT54S-7-F is usually 5 days.

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

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BAT54S-7-F?

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

Once your BAT54S-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 BAT54S-7-F?

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

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

All BAT54S-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 BAT54S-7-F meets industry standards.

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

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

Return procedure for BAT54S-7-F:

1.Submit a request within 90 days.

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

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