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Taiwan Semiconductor Corporation BAT54T REG
- Part No.:
- BAT54T REG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BAT54T REG.pdf
- Description:
- DIODE ARR SCHOT 30V 200MA SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:8,688
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Product details
Overview
BAT54T REG from Taiwan Semiconductor is a dual-channel Schottky barrier diode in SOT-363 package, rated for 200 mA forward current and 30 V repetitive peak reverse voltage, with 1.0 V forward voltage at 100 mA and 5 ns reverse recovery time-used for high-speed clamping and polarity protection in compact DC power rails.
For engineers reviewing the BAT54T REG datasheet, BAT54T REG pinout, BAT54T REG application, or BAT54T REG equivalent, key selection criteria include low VF at low-to-moderate currents, sub-10 ns switching speed, thermal resistance of 625°C/W, RoHS/halogen-free compliance, and SOT-363 footprint compatibility with space-constrained PCB layouts.
Technical Context
The BAT54T REG integrates two independent Schottky diodes in a single SOT-363 (SC-70-6) surface-mount package, sharing no internal connection between anodes or cathodes-enabling flexible dual-diode configurations such as dual clamping or independent reverse polarity protection paths. Its junction temperature range spans −65°C to +150°C, supporting operation in automotive under-hood and industrial control environments.
Designed for fast transient response, it delivers 2 μA max reverse leakage at 25 V and 25°C, 10 pF junction capacitance at 1 V reverse bias, and maintains stable forward conduction down to 0.24 V at 0.1 mA-critical for low-power signal-level clamping and battery backup path control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous) | 200 mA - supports sustained current in USB-powered peripherals and sensor interface rails |
| VRRM | 30 V - enables use in 24 V industrial I/O and 12 V automotive subsystems without derating |
| VF @ 100 mA | 1.00 V - minimizes power loss and self-heating in always-on protection circuits |
| trr | 5 ns - ensures clean switching in >20 MHz digital signal clamping and ESD pulse suppression |
| RθJA | 625°C/W - requires careful thermal pad design or airflow for continuous 200 mA operation at ambient >70°C |
| IR @ 25 V | 2 μA max - preserves signal integrity in high-impedance analog monitoring nodes |
| CT @ 1 V | 10 pF - limits capacitive loading on high-frequency clock or data lines up to ~1 GHz |
Pinout & Package
Package: SOT-363 (SC-70-6), 6-pin surface-mount plastic package with matte tin-plated leads, UL 94V-0 molding compound, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 | Input node for first clamping or polarity protection path |
| 2 | Cathode of Diode 1 | Output/return node for Diode 1; tied to system ground or rail |
| 3 | NC / Thermal Pad | No internal connection; may be used as thermal relief or ground tie per layout guidelines |
| 4 | Cathode of Diode 2 | Shared cathode configuration not applicable-Diode 2 cathode is independent |
| 5 | Anode of Diode 2 | Input node for second independent protection or clamping function |
| 6 | Cathode of Diode 2 | Independent return path; allows dual-rail or split-domain protection |
Key Features
| Feature | Design Value |
|---|---|
| Fast switching speed | 5 ns reverse recovery enables reliable clamping of nanosecond-scale transients in microcontroller I/O protection |
| Low forward voltage drop | 1.0 V @ 100 mA reduces conduction loss by >30% vs. standard silicon diodes in 3.3 V–5 V supply paths |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics manufacturing |
| SOT-363 footprint | Standardized 2.1 × 2.0 × 0.9 mm outline allows drop-in replacement in existing SC-70-6 layouts without rework |
| Junction temp range | −65°C to +150°C rating supports deployment in unheated outdoor enclosures and motor drive control boards |
Applications
| USB Port Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting USB 2.0 data lines and VBUS against ESD and reverse insertion. IC Role / Device Role / Timing Role: Dual Schottky clamp: one diode for D+ line, one for D− line, both referenced to ground. Use Value: 5 ns trr prevents signal distortion at 480 Mbps; 10 pF CT avoids impedance mismatch on 90 Ω differential pairs. | Use Scenario: Isolating 4–20 mA loop-powered sensors from field wiring faults. IC Role / Device Role / Timing Role: Reverse polarity protection diode pair across sensor supply inputs, blocking negative transients. Use Value: 30 V VRRM withstands induced surges up to ±30 V; 2 μA IR preserves loop accuracy over full temperature range. |
| Automotive Body Control Module | IoT Edge Node Power Management |
Use Scenario: Clamping CAN transceiver I/O pins and protecting MCU GPIOs from load dump spikes. IC Role / Device Role / Timing Role: Fast clamping diode network tied to 5 V or 3.3 V rail and chassis ground. Use Value: 200 mA IF rating handles short-duration 12 V/24 V load dump energy; 150°C TJ max supports under-dash mounting. | Use Scenario: Enabling seamless battery/swappable power source handover in battery-backed smart meters. IC Role / Device Role / Timing Role: OR-ing diode pair selecting between primary Li-ion and backup coin cell sources. Use Value: 1.0 V VF minimizes voltage drop during switchover; SOT-363 saves board area in ultra-thin meter modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS40201MR6T1G | Dual common-cathode configuration; 200 mA IF, 40 V VRRM, VF = 0.45 V @ 100 mA | Better voltage margin for 36 V systems; lower VF improves efficiency but requires shared cathode routing | Select when higher reverse voltage headroom or lower conduction loss is prioritized over independent cathode flexibility |
| Diodes Incorporated BAT54C-7-F | Common-cathode dual Schottky; same 30 V/200 mA rating; VF = 0.85 V @ 100 mA; identical SOT-363 package | Optimized for cost-sensitive consumer applications; slightly tighter VF distribution but fixed cathode topology | Choose for price-sensitive designs where shared cathode does not constrain layout or functional requirements |
Compared with BAT54T REG, NSS40201MR6T1G offers higher VRRM and lower VF but mandates common-cathode routing, while BAT54C-7-F matches voltage/current specs and footprint but lacks independent cathodes-making BAT54T REG optimal for dual-rail isolation or asymmetric clamping topologies.
Availability
BAT54T REG is available at Aetrix Electronics and suitable for USB port protection, industrial sensor interfaces, automotive body control modules, and IoT edge node power management requiring stable component supply and long-term manufacturability.
Supply support for BAT54T REG 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete devices, analog ICs, and power management solutions for industrial, computing, and consumer markets.
The BAT54 series belongs to TSC's high-reliability Schottky diode product line, engineered specifically for fast-switching, low-loss protection in space-constrained and thermally demanding applications across automotive and industrial segments.
FAQ
What is the marking code for BAT54T REG?
The BAT54T REG is marked with "KLA" on the device surface, per Taiwan Semiconductor's official ordering and marking documentation. This distinguishes it from BAT54AD (KL6), BAT54CD (KL7), BAT54SD (KL8), and BAT54BR (KLB). The KLA code confirms the specific dual-diode, independent-anode-and-cathode configuration of the BAT54T REG and is visible under 20× magnification on the SOT-363 package top surface.
Does BAT54T REG support bidirectional signal clamping?
No-BAT54T REG contains two independent unidirectional Schottky diodes, each with defined anode-to-cathode polarity. It does not provide symmetrical bidirectional clamping like a TVS diode. For signal line protection, BAT54T REG must be used in conjunction with a reference rail (e.g., VCC or GND); one diode clamps positive excursions to VCC, another clamps negative excursions to GND-requiring external biasing, not inherent bidirectionality.
Is BAT54T REG pin-compatible with BAT54C or BAT54A variants?
No-BAT54T REG uses an independent diode configuration (anode1/cathode1/anode2/cathode2), whereas BAT54C is common-cathode and BAT54A is common-anode. Pin assignments differ: BAT54T REG pins 1/2 and 5/6 are isolated anode/cathode pairs, while BAT54C ties pins 2 and 4 to a shared cathode. Swapping them without layout revision will cause functional failure or short circuits.
What is the maximum power dissipation for BAT54T REG at 25°C ambient?
The BAT54T REG has a maximum power dissipation (PD) of 200 mW at TA = 25°C, as specified in its Absolute Maximum Ratings table. This limit assumes no additional copper pour or airflow; actual usable power drops significantly with rising ambient temperature-e.g., only ~100 mW at 75°C ambient-due to its 625°C/W junction-to-ambient thermal resistance. Derating curves in the datasheet must be applied for sustained operation.
Can BAT54T REG replace BAT54SW in a circuit?
No-BAT54SW is a single Schottky diode in SOT-323 (SC-59) package, while BAT54T REG is a dual diode in SOT-363. They differ in channel count, pin count (3 vs. 6), footprint, and thermal performance (RθJA 430°C/W for BAT54SW vs. 625°C/W for BAT54T REG). Substitution would require PCB redesign, netlist updates, and validation of dual-diode functionality-BAT54T REG cannot serve as a direct drop-in replacement for BAT54SW.
BAT54T REG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 3 Independent
- 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-363
BAT54T REG FAQ
1.How can I place an order for BAT54T REG through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54T REG 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 BAT54T REG reliable?
The price and inventory of BAT54T REG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54T REG is usually 5 days.
3.What payment methods are accepted for BAT54T REG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54T REG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54T REG?
BAT54T REG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54T REG 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 BAT54T REG?
For technical support, including BAT54T REG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54T REG requirements.
6.How does Aetrix verify that BAT54T REG is sourced from the original manufacturer or authorized distributors?
All BAT54T REG 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 BAT54T REG meets industry standards.
7.What is the process for return or replacement of BAT54T REG?
All BAT54T REG units undergo pre-shipment inspection (PSI). If there is an issue with BAT54T REG, 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 BAT54T REG part is unused and in its original packaging.
Return procedure for BAT54T REG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54T REG Tags
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BAV99-7-F
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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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
Nexperia USA Inc.
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BAS40-04LT1G
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MMBD1503-TP
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BAV99WT1G
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