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Semtech Corporation SC3BJ6F
- Part No.:
- SC3BJ6F
- Manufacturer:
- Semtech Corporation
- Category:
- Bridge Rectifiers
- Package:
- 5-Rectangle
- Datasheet:
-
SC3BJ6F.pdf
- Description:
- BRIDGE RECT 3PHASE 600V 1.5A
- Quantity:
- Payment:
- Shipping:
Inventory:5,450
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Product details
Overview
SC3BJ6F from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, and 20mΩ dynamic resistance. It protects USB Type-C power delivery buses, load switch inputs, and industrial interfaces where stable clamping under temperature and current stress is critical.
For engineers reviewing the SC3BJ6F datasheet, pinout, applications, or equivalent options, this device offers constant-voltage clamping across its full 40A surge range and −40°C to +125°C operating temperature-critical when selecting robust, low-RDSON-based protection over conventional TVS diodes in USB PD, IoT, and industrial equipment designs.
Technical Context
The SC3BJ6F implements a precision-triggered shunt FET architecture: a dedicated trigger circuit senses overvoltage events and activates a low-RDS(ON) MOSFET to divert transients to ground. Unlike standard TVS diodes, its clamping voltage remains nearly flat (27.5–28V) from 24A to 40A due to decreasing RDS(ON) under surge conditions.
It operates with reverse stand-off voltage of 22V, breakdown voltage of 25–27.9V, and junction capacitance of 175pF at 22V/1MHz. Its DFN 1.6×1.6×0.55mm package integrates three parallel input terminals (Pins 4–6) and three ground terminals (Pins 1–3) to minimize parasitic inductance and maximize surge current handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - ensures protected ICs (e.g., USB PD controllers) remain below damage thresholds even at max surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial and USB PD applications. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without external shielding. |
| Dynamic Resistance | 20mΩ - enables near-constant clamping by minimizing IR drop increase as surge current rises. |
| Junction Capacitance | 175pF at 22V/1MHz - compatible with medium-speed data/power lines (e.g., USB Type-C VBUS, load switch inputs), not superspeed lanes. |
Pinout & Package
SC3BJ6F is housed in a RoHS-compliant DFN 1.6mm × 1.6mm × 0.55mm 6-lead package with exposed thermal pad (no solder mask defined). All pins are electrically grouped: Pins 1–3 form a common ground plane; Pins 4–6 form a common input node. PCB layout requires direct, low-inductance routing to connector and multi-via grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | Ground (GND) | Parallel ground terminals - must all be connected to minimize ground loop inductance during 40A surge discharge. |
| Pins 4, 5, 6 | Input (IN) | Parallel protected-line terminals - connect directly to VBUS or power rail; all three required for rated 40A performance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies only ±0.5V across full 24–40A surge range - eliminates design margin inflation needed with TVS diodes. |
| Temperature-stable protection | Clamping remains 27.5–28V from −40°C to +125°C - removes thermal derating calculations for industrial ambient conditions. |
| Low dynamic resistance | 20mΩ measured between 1A–40A (8/20μs) - delivers superior energy diversion vs. TVS diodes with fixed RDYN >1Ω. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports repeated ±1kV/42Ω surges per IEC 61000-4-5 without degradation. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V VBUS lines in USB-C receptacles against ESD, lightning-induced surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed adjacent to the connector, clamping transients before they reach the PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping across temperature and current - prevents false OVP trips and ensures PD controller survival under worst-case 40A surges. |
Use Scenario: Safeguarding input pins of industrial-grade load switches (e.g., HS2950P) against EOS in remote meters, robotics, and factory automation. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents latch-up or permanent damage to the load switch by holding clamping voltage well below its absolute maximum ratings (e.g., <30V). |
| IoT Device Power Rail Protection | Storage Device DC Bus Protection |
Use Scenario: Securing 12–22V power rails in battery-powered or PoE-powered IoT edge nodes exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS+MOV networks - handles both fast ESD and slower surge events. Use Value: Reduces BOM count and board area versus discrete TVS arrays while delivering higher reliability in uncontrolled environments. |
Use Scenario: Protecting SATA or NVMe SSD power inputs (e.g., +3.3V/+12V rails) from EOS during hot-swap, cable insertion, or system-level EFT exposure. IC Role / Device Role / Timing Role: Standalone transient suppressor on primary DC input path - absorbs energy before it propagates to PMIC or controller ICs. Use Value: Ensures uninterrupted operation during ±4kV EFT bursts (IEC 61000-4-4) and prevents latent damage to flash memory controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Identical electrical specs, same DFN 1.6×1.6mm package, identical marking (T22), and same tape-and-reel packaging (3,000/reel). | No functional difference - TDS2211P.C is the official Semtech orderable part number; SC3BJ6F is a valid alternate marking used in distribution channels. | Select TDS2211P.C for direct manufacturer sourcing; SC3BJ6F is fully interchangeable with no design or layout impact. |
| SMAJ22A | Standard unidirectional TVS diode: 22V VRWM, 35.5V VC @ 12.3A, 1.2Ω RDYN, 150pF - higher clamping, current-limited, temperature-sensitive. | Requires larger derating margin for 40A surges; clamping rises to ~42V at 125°C - unsuitable for tight-margin USB PD VBUS protection. | Use only where lower cost and legacy compatibility outweigh clamping stability; not recommended for new USB PD or industrial designs requiring 40A surge headroom. |
Compared with TDS2211P.C (identical device) and SMAJ22A (conventional TVS), SC3BJ6F delivers flat 27.5–28V clamping across temperature and current - enabling smaller safety margins, eliminating thermal derating, and supporting robust 40A surge immunity in space-constrained USB and industrial applications.
Availability
SC3BJ6F is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch protection, and IoT device power rail hardening requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SC3BJ6F 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
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in analog and mixed-signal ICs for precision protection, signal integrity, and wireless infrastructure.
The TDS family-including SC3BJ6F-is engineered specifically for high-energy EOS protection in next-generation interfaces like USB PD and industrial power systems, replacing traditional TVS diodes with active FET-based clamping for superior voltage stability and surge resilience.
FAQ
What is the exact function of SC3BJ6F in a circuit?
SC3BJ6F functions as a transient-diverting suppressor that actively shunts high-energy electrical overstress (EOS) events-such as ESD, lightning surges, and EFT-to ground using an integrated precision-triggered MOSFET. Unlike passive TVS diodes, SC3BJ6F maintains a stable 27.5–28V clamping voltage across its full 40A surge range and −40°C to +125°C operating temperature, making it ideal for protecting sensitive 22V power rails in USB PD and industrial systems.
Is SC3BJ6F pin-compatible with other Semtech TDS devices?
No-SC3BJ6F is specific to the TDS2211P family and shares the same 6-pin DFN 1.6×1.6mm package and pinout (Pins 1–3 = GND, Pins 4–6 = IN) as TDS2211P.C. It is not pin-compatible with other TDS variants like TDS3301P (33V) or TDS1201P (12V), which use different breakdown voltages and internal trigger thresholds despite similar packaging.
Can SC3BJ6F replace a standard TVS diode like SMAJ22A in an existing design?
SC3BJ6F can replace SMAJ22A only if the PCB layout accommodates its 6-pin DFN footprint and the application demands tighter clamping control. SMAJ22A has higher clamping (~35.5V at 12.3A) and degrades with temperature, whereas SC3BJ6F holds 27.5–28V up to 40A and 125°C. Layout changes are required due to differing pin count and thermal grounding needs - it is not a drop-in replacement.
What is the maximum continuous operating voltage for SC3BJ6F?
The maximum continuous operating (reverse stand-off) voltage for SC3BJ6F is 22V - verified per datasheet parameter VRWM. It may be used on any DC or slowly varying power line up to this voltage, including USB Type-C VBUS (up to 20V nominal, 22V max), industrial 24V rails (with appropriate margin), and load switch inputs. Exceeding 22V risks increased leakage or unintended conduction.
Does SC3BJ6F require external components for basic operation?
No - SC3BJ6F is a fully self-contained transient suppressor requiring no external resistors, capacitors, or bias networks. Its internal trigger circuit and shunt FET operate autonomously. Best practice is to place SC3BJ6F as close as possible to the protected connector with short, wide traces to Pins 4–6 (IN) and robust multi-via connections from Pins 1–3 (GND) to the ground plane - no additional components are needed for functional protection.
SC3BJ6F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 5-Rectangle
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Diode Type:
- Three Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 600 V
- Current - Average Rectified (Io):
- 1.5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Current - Reverse Leakage @ Vr:
- 3 µA @ 600 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- QC Terminal
- Supplier Device Package:
- -
SC3BJ6F FAQ
1.How can I place an order for SC3BJ6F through Aetrix?
Please submit a Request for Quotation (RFQ) for SC3BJ6F 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 SC3BJ6F reliable?
The price and inventory of SC3BJ6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC3BJ6F is usually 5 days.
3.What payment methods are accepted for SC3BJ6F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC3BJ6F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC3BJ6F?
SC3BJ6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC3BJ6F 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 SC3BJ6F?
For technical support, including SC3BJ6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC3BJ6F requirements.
6.How does Aetrix verify that SC3BJ6F is sourced from the original manufacturer or authorized distributors?
All SC3BJ6F 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 SC3BJ6F meets industry standards.
7.What is the process for return or replacement of SC3BJ6F?
All SC3BJ6F units undergo pre-shipment inspection (PSI). If there is an issue with SC3BJ6F, 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 SC3BJ6F part is unused and in its original packaging.
Return procedure for SC3BJ6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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