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Diodes Incorporated BAT54STC
- Part No.:
- BAT54STC
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAT54STC.pdf
- Description:
- DIODE ARR SCHOT 30V 200MA SOT233
- Quantity:
- Payment:
- Shipping:
Inventory:7,256
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Product details
Overview
BAT54STC from ON Semiconductor is a dual common-cathode silicon epitaxial Schottky barrier diode in SOT-23 package, rated for 30 V reverse voltage, 200 mA continuous forward current, and 400 mV forward voltage at 10 mA. It delivers fast 5 ns reverse recovery time and low 7.5–10 pF junction capacitance at 1 V, enabling use in high-frequency switching applications such as SCSI bus clamping and mobile telecom DC-DC converter output rectification.
For engineers reviewing the BAT54STC datasheet, BAT54STC pinout, BAT54STC application, or BAT54STC equivalent, key selection criteria include its dual common-cathode configuration, low VF across 0.1–100 mA range (135–400 mV), 30 V VR rating, 5 ns trr, and SOT-23 thermal performance up to 125°C junction temperature.
Technical Context
The BAT54STC integrates two independent Schottky diodes sharing a common cathode terminal (Pin 2), forming a compact dual-diode topology optimized for space-constrained signal routing and bidirectional clamping. Its epitaxial construction enables low forward voltage drop and minimal stored charge, critical for high-efficiency, high-speed switching.
Designed for operation up to 125°C junction temperature, it supports continuous conduction at 200 mA with 330 mW power dissipation at 25°C ambient, derating linearly above that point. The 5 ns reverse recovery time is measured under standardized 10 mA forward-to-1 mA reverse transition conditions with 100 Ω load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 30 V - Maximum DC blocking capability before breakdown; suitable for 24 V rail protection and 5 V/3.3 V logic-level clamping. |
| Forward Current (IF) | 200 mA - Continuous DC current per diode; supports moderate-power signal path rectification and OR-ing. |
| Forward Voltage (VF) | 400 mV @ 10 mA - Low conduction loss improves efficiency in low-voltage DC-DC outputs and level-shifting circuits. |
| Reverse Recovery Time (trr) | 5 ns - Enables reliable operation up to ~100 MHz switching frequencies in RF detector and high-speed data line clamping. |
| Junction Capacitance (CD) | 7.5–10 pF @ 1 V, 1 MHz - Minimizes signal distortion in high-speed digital interfaces like SCSI and USB data lines. |
| Power Dissipation (Ptot) | 330 mW @ 25°C - Defines thermal limit in SOT-23; requires PCB copper area for sustained 200 mA operation at elevated ambient. |
Pinout & Package
SOT-23 surface-mount plastic package (3-pin, standard footprint), 1.3 mm × 2.9 mm × 1.0 mm body, gull-wing leads, JEDEC MO-178 compatible. Pin 1: Anode 1, Pin 2: Common Cathode, Pin 3: Anode 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Input node for first Schottky path; connects to signal source or supply rail requiring clamping/rectification. |
| Pin 2 | Common Cathode | Shared return path for both diodes; ties to reference plane (e.g., ground or regulated rail) for dual-directional protection. |
| Pin 3 | Anode of Diode 2 | Independent input node for second Schottky path; enables differential clamping or redundant signal routing. |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode configuration | Enables compact bidirectional ESD/clamp protection on paired signal lines (e.g., RS-485 A/B) without extra ground traces. |
| Low VF across wide IF range (135–400 mV) | Reduces forward conduction loss in battery-powered systems where 0.1–10 mA bias currents dominate. |
| 5 ns reverse recovery time | Supports clean switching in >50 MHz clock distribution networks and RF front-end detector circuits. |
| 7.5–10 pF junction capacitance | Maintains signal integrity on high-speed digital buses (SCSI, LVDS) by limiting capacitive loading per line. |
Applications
| SCSI Bus Clamping | Mobile Phone Power Management |
|---|---|
Use Scenario: Protecting differential SCSI-2 data lines (SDA/SDB) against ESD and transient overvoltage during hot-plug insertion. IC Role / Device Role / Timing Role: Dual Schottky clamp diode providing low-VF, low-Cj path to ground/rail for bidirectional signal line protection. Use Value: 5 ns trr prevents signal edge degradation; 7.5 pF Cj avoids timing skew on 10–20 MHz parallel SCSI bus. | Use Scenario: Output rectification in buck converter supplying core voltage to baseband processor in GSM handset. IC Role / Device Role / Timing Role: Synchronous rectifier replacement for low-loss DC-DC conversion at 1–3 MHz switching frequency. Use Value: 400 mV VF at 10 mA reduces conduction loss by >30% vs. standard PN diode, extending battery runtime. |
| USB 1.1 Data Line Protection | RS-485 Transceiver Interface |
Use Scenario: I/O pin protection on USB upstream port transceivers against ±8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Common-cathode dual diode clamping D+ and D− lines to 3.3 V and GND rails. Use Value: 30 V VR withstands USB VBUS coupling transients; 10 pF Cj preserves 12 Mbps full-speed signal rise/fall times. | Use Scenario: Fail-safe termination and short-circuit protection on RS-485 half-duplex bus nodes in industrial PLC backplanes. IC Role / Device Role / Timing Role: Bidirectional clamping diode pair limiting A/B differential voltage swing to safe levels during cable fault events. Use Value: Dual common-cathode layout simplifies PCB routing; 200 mA IF rating handles sustained fault currents without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV99LT1G | Single common-anode dual Schottky; 70 V VR, 215 mA IF, 1.25 V VF @ 50 mA | Higher VR suits 48 V telecom systems; higher VF increases conduction loss in low-voltage rails | Select when higher reverse standoff is required and VF penalty is acceptable. |
| NSR0230HT1G | Single Schottky; 30 V VR, 200 mA IF, 270 mV VF @ 10 mA, SOD-523 package | Smaller footprint but single-diode only; no dual common-cathode functionality | Choose for space-limited single-line clamping where dual topology is unnecessary. |
Compared with BAV99LT1G, BAT54STC offers lower VF and matched dual common-cathode layout ideal for differential signal protection; compared with NSR0230HT1G, it provides integrated dual-channel functionality in same SOT-23 footprint, eliminating routing complexity for paired signals.
Availability
BAT54STC is available at Aetrix Electronics and suitable for SCSI interface design, mobile phone power management, USB 1.1 data line protection, and RS-485 transceiver interface applications requiring stable component supply and consistent parametric performance across production lots.
Supply support for BAT54STC 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
ON Semiconductor is a global semiconductor supplier specializing in energy-efficient power management, analog, and sensor solutions for automotive, industrial, and communications markets.
The BAT54 series targets high-frequency signal integrity and low-loss power conversion, with BAT54STC specifically engineered for dual-channel clamping and rectification in compact portable and data interface systems.
FAQ
What is the maximum junction temperature for continuous operation of BAT54STC?
The absolute maximum junction temperature is 125°C. Operation at this temperature requires strict thermal management: PCB copper area ≥ 25 mm² per pad, ambient ≤ 85°C, and derated forward current to ≤120 mA. Exceeding 125°C risks permanent parameter shift and accelerated failure.
Can BAT54STC be used as a replacement for BAT54C in a common-anode design?
No. BAT54STC has a common-cathode pinout (Pin 2 = cathode), while BAT54C is common-anode (Pin 2 = anode). Swapping them causes reverse polarity conduction and circuit malfunction. Layout and schematic must match the specific BAT54 variant's internal topology.
Is BAT54STC suitable for 5 V USB 2.0 data line protection?
No. USB 2.0 high-speed (480 Mbps) requires <1.5 pF junction capacitance to avoid signal integrity loss; BAT54STC's 7.5–10 pF exceeds this limit. It remains valid for USB 1.1 (12 Mbps) where capacitance tolerance is relaxed.
What is the typical reverse leakage current at 25°C and 25 V reverse bias?
Typical reverse leakage current is 2.5 µA at 25 V reverse bias and 25°C ambient, per manufacturer characterization. Measured values range from 1.2 µA (min) to 4 µA (max) under those conditions, confirming suitability for low-leakage bias networks and precision clamping.
BAT54STC 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:
- Obsolete
- 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:
- 4 µA @ 25 V
- Operating Temperature - Junction:
- 125°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BAT54STC FAQ
1.How can I place an order for BAT54STC through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54STC 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 BAT54STC reliable?
The price and inventory of BAT54STC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54STC is usually 5 days.
3.What payment methods are accepted for BAT54STC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54STC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54STC?
BAT54STC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54STC 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 BAT54STC?
For technical support, including BAT54STC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54STC requirements.
6.How does Aetrix verify that BAT54STC is sourced from the original manufacturer or authorized distributors?
All BAT54STC 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 BAT54STC meets industry standards.
7.What is the process for return or replacement of BAT54STC?
All BAT54STC units undergo pre-shipment inspection (PSI). If there is an issue with BAT54STC, 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 BAT54STC part is unused and in its original packaging.
Return procedure for BAT54STC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54STC Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
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BAT54SLT1G
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BAV70LT1G
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BAT54CLT1G
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
onsemi
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BAT54S,215
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BAS40-04LT1G
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MMBD1503-TP
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BAV99WT1G
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