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Diodes Incorporated BAT54SQ-13
- Part No.:
- BAT54SQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAT54SQ-13.pdf
- Description:
- DIODE ARR SCHOT 30V 200MA SOT233
- Quantity:
- Payment:
- Shipping:
Inventory:9,409
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Product details
Overview
BAT54SQ-13 from Diodes Incorporated is a 30 V, 200 mA surface-mount Schottky barrier diode in SOT23 package, featuring 800 mV max forward voltage at 100 mA, 2 µA max reverse leakage at 25 V, and 5 ns reverse recovery time-used for polarity protection and high-frequency clamping in automotive power management circuits.
For engineers reviewing the BAT54SQ-13 datasheet, BAT54SQ-13 pinout, BAT54SQ-13 application, or BAT54SQ-13 equivalent, key selection criteria include low VF for efficiency-critical 12 V rail protection, AEC-Q101 qualification for under-hood deployment, fast tRR for PWM edge integrity, and SOT23 thermal resistance (RθJA = 500 °C/W) for board-level thermal design.
Technical Context
This Schottky diode employs a planar silicon structure with PN junction guard ring to suppress ESD transients and improve surge robustness without compromising switching speed. Its low barrier height enables sub-0.8 V turn-on at 100 mA while maintaining 30 V reverse blocking capability.
The device operates across –55 °C to +150 °C and is rated for 600 mA non-repetitive surge current, supporting transient load-dump immunity in automotive ECUs. Thermal derating begins above 25 °C ambient per the defined 200 mW PD limit and 500 °C/W RθJA on FR-4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - supports 12 V automotive systems with 2.5× safety margin against ISO 7637-2 pulse 5a (35 V peak) |
| IO | 200 mA continuous - suitable for sensor biasing, logic-level clamping, and low-power rail steering |
| VF Max | 800 mV @ 100 mA - reduces conduction loss by >30% vs. standard silicon diodes in always-on paths |
| IR Max | 2 µA @ 25 V - ensures minimal standby current drain in battery-backed modules |
| tRR | 5 ns - preserves signal edge fidelity in >10 MHz clock or PWM routing applications |
| CT | 10 pF @ 1 V - limits capacitive loading on high-speed digital lines during clamping |
| RθJA | 500 °C/W - requires ≤10 mm² copper pour for safe operation at full IO in sealed enclosures |
Pinout & Package
Package: SOT23 - 3-terminal surface-mount plastic package, 2.9 mm × 1.3 mm × 1.0 mm, matte tin-plated alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node (e.g., input rail) in reverse-polarity protection |
| Cathode (Pin 2) | Forward current exit / reverse-blocking terminal | Connected to system ground or protected load; carries full fault current during reverse connection |
| No-Connect (Pin 3) | Internal die attachment pad | Thermally coupled to die but electrically isolated; may be grounded for enhanced thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| PN junction guard ring | Enables AEC-Q101 qualification by suppressing ESD-induced latch-up and improving transient immunity per ISO 10605 |
| Lead-free & halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU), <900 ppm Br+Cl, <1000 ppm Sb - compliant for automotive Tier-1 supply chain traceability |
| Low thermal resistance junction-to-case | RθJC = 180 °C/W - allows direct thermal coupling to PCB copper for improved power handling in space-constrained modules |
| Automotive-grade manufacturing | Produced in IATF 16949-certified facilities with PPAP documentation support for production release |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Interface |
|---|---|
Use Scenario: Reverse-polarity protection for LIN bus transceiver power input in door module. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage during battery jump-start misconnection. Use Value: 800 mV VF minimizes voltage drop on 12 V rail, preserving >11.2 V for transceiver operation during cold-crank conditions. | Use Scenario: Input clamping diode on 24 V analog sensor front-end (e.g., pressure transducer). IC Role / Device Role / Timing Role: High-speed overvoltage limiter shunting EFT bursts to ground before op-amp input stage. Use Value: 5 ns tRR and 10 pF CT prevent ringing and signal distortion during 4 kV EFT pulses per IEC 61000-4-4. |
| USB-C Power Delivery Sink | Smart Lighting Driver |
Use Scenario: VBUS path isolation in dual-role USB-C port with dynamic role swap. IC Role / Device Role / Timing Role: Low-loss forward conduction path during DFP mode; blocks reverse current when UFP active. Use Value: 200 mA IO and 30 V VRRM cover USB PD 3.0 20 V/3 A profiles with margin for inductive kickback. | Use Scenario: Flyback diode across MOSFET gate driver in constant-current LED string controller. IC Role / Device Role / Timing Role: Freewheeling path for gate charge during PWM off-cycle, minimizing switching losses. Use Value: Sub-0.8 V VF reduces average gate drive power dissipation by 45% vs. 1N4148 in 100 kHz PWM operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54SWTQ-7-F | Same SOT23 package, identical VRRM/IO, but 300 mV lower VF typ. at 10 mA; no AEC-Q101 certification | Not qualified for automotive use; limited to commercial-grade consumer or industrial control | Select only if AEC-Q101 compliance is not required and ultra-low VF at light loads is prioritized |
| NSR0230P2T5G | Lower VF (360 mV @ 100 mA), same 30 V rating, but 120 mA IO; SOD-523 package (smaller footprint) | Insufficient current rating for 200 mA BCM rails; unsuitable for sustained load-dump events | Use only in space-constrained, low-current applications where thermal margin is not critical |
Compared with SBAT54SWTQ-7-F and NSR0230P2T5G, BAT54SQ-13 uniquely delivers AEC-Q101 qualification, 200 mA continuous rating, and SOT23 thermal robustness-making it the sole choice for production automotive modules requiring PPAP documentation and IATF 16949 traceability.
Availability
BAT54SQ-13 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, USB-C power delivery sinks, and smart lighting drivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAT54SQ-13 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 BAT54Q-series belongs to Diodes' AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive power rail protection, ESD-hardened signal clamping, and high-efficiency DC-DC converter auxiliary functions.
FAQ
What is the maximum allowable junction temperature for BAT54SQ-13?
The absolute maximum junction temperature is +150 °C, with continuous operation limited by thermal derating: power dissipation must be reduced linearly above +25 °C ambient at 0.4 mW/°C (based on RθJA = 500 °C/W). At +105 °C ambient, maximum usable power drops to 60 mW to maintain TJ ≤ 150 °C.
Is BAT54SQ-13 compatible with lead-free reflow soldering processes?
Yes-BAT54SQ-13 uses matte tin-plated alloy 42 leads and complies with JEDEC J-STD-020 moisture sensitivity level 1, supporting peak reflow temperatures up to 260 °C for 10 seconds. The "Green" molding compound meets UL 94V-0 flammability rating and withstands standard Pb-free thermal profiles without delamination.
How does the PN junction guard ring improve reliability in automotive environments?
The integrated guard ring prevents edge breakdown during voltage transients, raising ESD withstand voltage to ±8 kV (HBM) and improving immunity to load-dump spikes. It eliminates parasitic thyristor formation under high dv/dt, eliminating latch-up risk in 12 V systems exposed to ISO 7637-2 pulse 5a (75 V/350 ms) events.
Can BAT54SQ-13 replace BAT54CQ-13 in existing designs?
Yes-BAT54SQ-13 and BAT54CQ-13 share identical electrical specs, package, and pinout, differing only in marking code (KL4 vs KL3) and internal die configuration. Both are AEC-Q101 qualified and functionally interchangeable; SQ variant uses a slightly optimized Schottky contact for tighter VF distribution at high currents.
BAT54SQ-13 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
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BAT54SQ-13 FAQ
1.How can I place an order for BAT54SQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT54SQ-13 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 BAT54SQ-13 reliable?
The price and inventory of BAT54SQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT54SQ-13 is usually 5 days.
3.What payment methods are accepted for BAT54SQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT54SQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT54SQ-13?
BAT54SQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT54SQ-13 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 BAT54SQ-13?
For technical support, including BAT54SQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT54SQ-13 requirements.
6.How does Aetrix verify that BAT54SQ-13 is sourced from the original manufacturer or authorized distributors?
All BAT54SQ-13 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 BAT54SQ-13 meets industry standards.
7.What is the process for return or replacement of BAT54SQ-13?
All BAT54SQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with BAT54SQ-13, 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 BAT54SQ-13 part is unused and in its original packaging.
Return procedure for BAT54SQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAT54SQ-13 Tags
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BAV99-7-F
Diodes Incorporated
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BAV99,215
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