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Diodes Incorporated QSBT40-13-F
- Part No.:
- QSBT40-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
QSBT40-13-F.pdf
- Description:
- SCHOTTKY DIODE SOT363 T&R 10K
- Quantity:
- Payment:
- Shipping:
Inventory:4,244
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Product details
Overview
QSBT40-13-F from Diodes Incorporated is a quad Schottky bus terminator diode array designed for high-speed data line transient protection in industrial and telecom interfaces. It features four independent Schottky diodes with 30 V reverse voltage rating, 200 mA continuous forward current per channel, 5.0 ns reverse recovery time, and ultra-low 280–1000 mV forward voltage (depending on current), deployed in SOT363 package for compact DDR/PCIe/LVDS termination and ESD clamping.
For engineers reviewing the QSBT40-13-F datasheet, QSBT40-13-F pinout, QSBT40-13-F application, or QSBT40-13-F equivalent, this device serves as a space-efficient, RoHS-compliant solution for IEC61000-4-2 (15 kV air, 8 kV contact) and IEC61000-4-4 (80 A EFT) compliant data line protection in high-density PCB layouts requiring low capacitance (6.5–10.0 pF) and fast switching.
Technical Context
The QSBT40-13-F integrates four monolithic Schottky diodes in a single SOT363 package, each configured with a PN junction guard ring to enhance ESD robustness without compromising switching speed. Its architecture supports bidirectional clamping between data lines (DL1–DL4) and supply rails (VCC/GND), enabling simultaneous overvoltage suppression on multiple high-speed signal paths.
Designed for use in 3.3 V and 5 V systems, it operates across –55 °C to +125 °C and delivers stable performance under transient stress per IEC61000-4-5 Class 3 lightning surge requirements. The 6.5 pF inter-line capacitance (DL1–DL4) and 10.0 pF line-to-rail capacitance ensure minimal signal integrity degradation in sub-1 Gbps digital interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM / VRWM | 30 V - Maximum reverse blocking capability for 3.3 V/5 V bus lines without breakdown |
| IFM | 200 mA per diode - Sustained current handling for steady-state termination and DC biasing |
| VF @ 10 mA | 350 mV - Low forward drop preserves noise margin and reduces power loss in active termination |
| trr | 5.0 ns - Enables clean switching in >100 MHz digital signal environments |
| CT (DL–DL) | 6.5 pF - Minimizes crosstalk and timing skew between adjacent data lines |
| ESD Rating | ±15 kV air / ±8 kV contact (IEC61000-4-2) - Meets industrial-grade interface immunity requirements |
| Operating Temp | –55 °C to +125 °C - Validated for extended temperature operation in automotive and industrial control units |
Pinout & Package
SOT363 is a 6-pin ultra-small surface-mount package (2.10 × 1.30 × 0.95 mm) with gull-wing leads, rated UL 94V-0, moisture sensitivity level 1, and matte tin-plated Alloy 42 leadframe for reliable reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DL1) | Data Line 1 Anode | Input node for first protected data line; connects to external signal trace |
| 2 (GND) | Ground Reference | Common cathode return path for all four diodes; must be low-inductance PCB ground plane |
| 3 (VCC) | Supply Rail Clamp | Positive rail connection point for bidirectional clamping to VCC or GND |
| 4 (DL2) | Data Line 2 Anode | Second protected data line input; electrically isolated but thermally coupled |
| 5 (DL3) | Data Line 3 Anode | Third protected data line input; shares thermal mass with DL1/DL2/DL4 |
| 6 (DL4) | Data Line 4 Anode | Fourth protected data line input; enables full quad-line termination in one footprint |
Key Features
| Feature | Design Value |
|---|---|
| Quad Schottky configuration | Four independent low-VF diodes in one SOT363 footprint-reduces board area by ~75% vs. discrete solutions |
| PN junction guard ring | Enhances ESD robustness without adding series resistance or degrading trr performance |
| Low inter-line capacitance | 6.5 pF between data lines minimizes crosstalk in parallel bus architectures (e.g., DDR address/control) |
| Lead-free & green construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) meets strict environmental compliance mandates |
| High-density termination | Enables compact layout for multi-lane interfaces such as PCIe Gen2 x4 or LVDS camera links |
Applications
| DDR Memory Interfaces | PCI Express Lanes |
|---|---|
Use Scenario: Termination and ESD protection of DDR3/DDR4 command/address/data buses on memory modules and controllers. IC Role / Device Role: Quad Schottky clamp providing bidirectional overvoltage suppression between signal lines and VDDQ/GND rails. Use Value: Maintains signal integrity at 800–2133 MT/s with <6.5 pF inter-line capacitance and prevents latch-up during hot-plug events. | Use Scenario: Transient protection on PCIe Gen1/Gen2 differential pairs in server backplanes and add-in cards. IC Role / Device Role: Per-lane clamping diode array placed at connector entry points to absorb ESD/EFT energy before reaching SerDes PHY. Use Value: Achieves IEC61000-4-2 Level 4 compliance while adding <0.1 mm² footprint per lane versus discrete alternatives. |
| LVDS Camera Links | Industrial Ethernet PHYs |
Use Scenario: Signal line protection in machine vision cameras using ChannelLink or SLVS-EC interfaces. IC Role / Device Role: Low-capacitance Schottky array clamping differential pairs to 3.3 V rails during cable disconnect transients. Use Value: Prevents receiver damage from ±8 kV contact ESD without distorting 600+ Mbps LVDS eye diagrams due to 5.0 ns trr. | Use Scenario: Data line hardening in EtherCAT or PROFINET PHY sections exposed to factory floor EMI and surges. IC Role / Device Role: Quad termination diode protecting MDI pins (TX+/TX−/RX+/RX−) against IEC61000-4-4 EFT bursts. Use Value: Delivers 80 A EFT immunity (5/50 ns) with no derating required up to +105 °C ambient in DIN-rail mounted gateways. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad Schottky bus terminator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN3026LSD-13 | Single N-channel MOSFET (30 V, 3.2 A), not a diode array; lacks integrated guard ring and ESD certification | Used for active load switching-not suitable for passive bus termination or IEC-rated clamping | Select only if replacing discrete MOSFET-based TVS circuits, not as direct QSBT40 substitute |
| SP1001-01WTG | Single-channel 15 kV ESD protector (0.5 pF), no quad configuration or VCC/GND clamping topology | Targeted at USB/HDMI port-level protection-not designed for multi-line bus termination | Choose when ultra-low capacitance is critical and only one line requires protection |
Compared with DMN3026LSD-13 and SP1001-01WTG, QSBT40-13-F uniquely combines quad-channel Schottky clamping, IEC-certified ESD/EFT immunity, and VCC/GND bidirectional architecture in a single SOT363 footprint-making it irreplaceable for compact, standards-compliant bus termination.
Availability
QSBT40-13-F is available at Aetrix Electronics and suitable for DDR memory subsystems, PCIe add-in card designs, and industrial LVDS camera interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for QSBT40-13-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, specializing in high-reliability protection, signal integrity, and power management solutions for industrial, computing, and communications markets.
The QSBT40 belongs to Diodes' Bus Terminator & Protection product line, engineered specifically for high-speed digital interface hardening-emphasizing low capacitance, fast recovery, and certified transient immunity in space-constrained applications.
FAQ
What is the maximum allowable peak reverse voltage for QSBT40-13-F?
The QSBT40-13-F has a peak repetitive reverse voltage (VRRM) and working peak reverse voltage (VRWM) rated at 30 V. This value is validated under standard test conditions per DS30195 Rev. 16–2 and applies to each of the four diodes independently. Operation above 30 V risks irreversible avalanche breakdown and permanent device failure.
Can QSBT40-13-F be used for unidirectional clamping only?
No-QSBT40-13-F is inherently bidirectional due to its internal configuration: each data line (DL1–DL4) connects to both VCC and GND through separate Schottky junctions. This allows clamping to either rail during positive or negative transients, satisfying IEC61000-4-2 and -4-4 requirements without external polarity selection.
Is the SOT363 package compatible with standard reflow profiles?
Yes-the SOT363 package uses matte tin-plated Alloy 42 leads and is qualified for Pb-free reflow per JEDEC J-STD-020. Its moisture sensitivity level is 1, meaning it can be stored indefinitely at ≤30 °C/60% RH without baking. Recommended peak temperature is 260 °C for ≤30 seconds, consistent with IPC/JEDEC J-STD-020D.3.
Does QSBT40-13-F require external current-limiting resistors?
No external current-limiting resistors are required for ESD/EFT clamping because the device's inherent dynamic resistance and 200 mA IFM rating provide sufficient self-limiting behavior during transient events. However, for continuous DC termination applications (e.g., active pull-up), series resistors must be sized per system voltage and desired bias current using VF values from the datasheet.
QSBT40-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 30V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 10pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
QSBT40-13-F FAQ
1.How can I place an order for QSBT40-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for QSBT40-13-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 QSBT40-13-F reliable?
The price and inventory of QSBT40-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QSBT40-13-F is usually 5 days.
3.What payment methods are accepted for QSBT40-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QSBT40-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QSBT40-13-F?
QSBT40-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QSBT40-13-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 QSBT40-13-F?
For technical support, including QSBT40-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QSBT40-13-F requirements.
6.How does Aetrix verify that QSBT40-13-F is sourced from the original manufacturer or authorized distributors?
All QSBT40-13-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 QSBT40-13-F meets industry standards.
7.What is the process for return or replacement of QSBT40-13-F?
All QSBT40-13-F units undergo pre-shipment inspection (PSI). If there is an issue with QSBT40-13-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 QSBT40-13-F part is unused and in its original packaging.
Return procedure for QSBT40-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
QSBT40-13-F Tags
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