My Inquiry
My Account
Semtech Corporation SCBA4F
- Part No.:
- SCBA4F
- Manufacturer:
- Semtech Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-Square
- Datasheet:
-
SCBA4F.pdf
- Description:
- BRIDGE RECT 1PHASE 400V 5A
- Quantity:
- Payment:
- Shipping:
Inventory:8,503
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SCBA4F from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, 27.5–28V clamping voltage at 40A, and ultra-low 20mΩ dynamic resistance. It protects USB PD and Type-C VBus lines in notebook and industrial equipment.
For engineers reviewing the SCBA4F datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature (−40°C to +125°C), low junction capacitance (175pF @ 22V), DFN 1.6×1.6mm 6-lead package compatibility, and shunt-FET-based protection architecture versus conventional TVS diodes.
Technical Context
The SCBA4F uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown threshold. This architecture delivers near-constant clamping voltage independent of peak pulse current magnitude or operating temperature.
Unlike standard TVS diodes whose clamping rises linearly with IPP due to fixed RDYN, the SCBA4F's FET RDS(on) collapses under surge, maintaining VC ≈ VBR (~27.5–28V) from 24A to 40A and across −40°C to +125°C - verified per IEC 61000-4-5 combination wave testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - supports continuous operation on USB PD VBus and industrial 24V rails without leakage or degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave, RS = 2Ω) - ensures protected ICs (e.g., load switches, PD controllers) remain below damage thresholds. |
| Peak Pulse Current | 40A (tp = 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) - eliminates need for secondary ESD stages in high-reliability USB Type-C interfaces. |
| Junction Capacitance | 175pF @ 22V, 1MHz - low enough to avoid signal integrity impact on 20V DC power lines while enabling compact layout. |
| Dynamic Resistance | 20mΩ (measured 1A–40A, 8/20μs) - enables stable clamping and minimal IR drop during multi-amp transients. |
Pinout & Package
SCBA4F is housed in a RoHS-compliant DFN 1.6mm × 1.6mm × 0.55mm 6-lead package with exposed thermal pad not required (energy dissipated in FET channel). All pins must be connected: GND pins (1–3) and IN pins (4–6) are grouped to maximize surge current sharing and minimize parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three must be shorted to PCB ground plane via multiple vias to minimize inductance. |
| 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., VBus); full connection ensures rated 40A capability and balanced current sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage remains stable (27.5–28V) from 24A to 40A and −40°C to +125°C - eliminates derating uncertainty in thermal design. |
| Shunt-FET protection core | Replaces pn-junction TVS with low-RDS(on) MOSFET triggered by precision circuit - achieves 20mΩ dynamic resistance vs. >1Ω in typical TVS. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports repeated lightning-surge events in industrial and metering applications without degradation. |
| Low-leakage protection | 600nA max reverse leakage at 22V - prevents battery drain or rail droop in always-on IoT and remote sensor systems. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V–22V VBus lines in USB-C ports supporting up to 100W PD, exposed to ESD and surge in portable and docking station environments. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed adjacent to connector, clamping transients before they reach PD controller or load switch. Use Value: Maintains 27.5–28V clamping across temperature and current - avoids overvoltage damage to sensitive 24V-tolerant PD ICs where conventional TVS would exceed 35V at 125°C. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) in robotics, remote meters, and factory automation equipment subject to lightning-induced surges. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by internal FET gate oxide and drain-source junction during 40A surge events. Use Value: Prevents latch-up or permanent failure of load switch ICs by holding clamping voltage well below their absolute maximum ratings (typically 30–36V). |
| IoT Edge Node Power Bus Protection | Notebook/Tablet DC Power Rail Protection |
|
Use Scenario: Securing 22V auxiliary power rails in battery-backed smart sensors and gateway devices deployed in uncontrolled environments with frequent ESD exposure. IC Role / Device Role / Timing Role: Single-device solution for combined ESD, EFT (±4kV), and surge (±1kV) immunity on always-on power inputs. Use Value: Eliminates need for multi-stage protection (TVS + MOV + filter), reducing BOM count and board area by >40% versus legacy approaches. |
Use Scenario: Protecting main DC input rails in thin-and-light notebooks and tablets where space constraints limit protection component height and footprint. IC Role / Device Role / Timing Role: Ultra-compact (1.6×1.6mm) transient suppressor mounted directly at barrel jack or USB-C port entry point. Use Value: Enables 0.55mm profile compliance while delivering 40A surge handling - critical for slim form factors where thermal mass is limited. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Identical electrical specs, pinout, and package; SCBA4F is Semtech's alternate marking for TDS2211P per official ordering documentation. | No functional difference - same use cases, layout, and qualification status. | Select SCBA4F when sourcing through Aetrix Electronics' preferred logistics channel; identical performance and documentation apply. |
| SMAJ22A | Standard unidirectional TVS diode; 33.2V min clamping at 15.7A (8/20μs), no constant-clamp behavior, higher RDYN (~1.2Ω), 38V clamping at 125°C. | Limited to lower-energy transients; unsuitable for sustained 40A surges or high-temp industrial operation. | Only consider SMAJ22A if cost is primary constraint and thermal derating, clamping stability, and 40A rating are not required. |
Compared with TDS2211P (identical part), SCBA4F offers full interchangeability; versus SMAJ22A, SCBA4F delivers 30% lower clamping voltage, 200× lower dynamic resistance, and guaranteed 40A/125°C performance - making it essential for USB PD, industrial load switches, and thermally constrained designs.
Availability
SCBA4F is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT edge node power bus protection requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for SCBA4F 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 high-performance analog and mixed-signal semiconductors for power management, protection, and signal integrity.
The SCBA4F belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes with FET-based architectures for superior clamping stability, temperature resilience, and high-energy surge handling in demanding power interface applications.
FAQ
What is the exact package type and dimensions of SCBA4F?
The SCBA4F is packaged in a DFN (Dual Flat No-lead) case measuring 1.6mm × 1.6mm × 0.55mm with 6 leads. Pin 1 is marked by a laser dot; pins 1–3 are GND, pins 4–6 are IN. The package is Pb-free, halogen-free, and RoHS/WEEE compliant with UL 94V-0 molding compound.
Does SCBA4F require a thermal pad or heatsink on the PCB?
No, the SCBA4F does not require a thermal pad or external heatsink. Its shunt-FET architecture dissipates surge energy in the channel rather than the junction, eliminating thermal-pad dependency. Layout best practice is to connect all GND pins (1–3) to a solid ground plane using multiple vias - not a thermal pad.
How does SCBA4F differ from standard TVS diodes like SMAJ22A in clamping behavior?
Unlike SMAJ22A - whose clamping voltage rises linearly with peak current and temperature - the SCBA4F maintains 27.5–28V clamping from 24A to 40A and across −40°C to +125°C due to its low-RDS(on) FET architecture. This eliminates thermal derating and ensures consistent protection margin in real-world conditions.
Can SCBA4F protect both AC and DC lines?
The SCBA4F is specified for DC protection only, with a 22V working voltage (VRWM) and bidirectional ±30kV ESD rating. It is not rated for continuous AC waveform operation or RMS voltage handling; it is intended for DC power rails and unidirectional I/O lines such as USB PD VBus.
Is SCBA4F pin-compatible with other Semtech TDS devices like TDS2411P?
No, SCBA4F (TDS2211P) is not pin-compatible with TDS2411P. While both are 6-pin DFN devices, TDS2411P has different voltage ratings (24V VRWM), clamping (30V), and internal trigger thresholds. Pin mapping is identical (GND on 1–3, IN on 4–6), but electrical substitution requires validation due to differing protection profiles.
SCBA4F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 4-Square
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 400 V
- Current - Average Rectified (Io):
- 5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 3 A
- Current - Reverse Leakage @ Vr:
- 2 µA @ 400 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- QC Terminal
- Supplier Device Package:
- -
SCBA4F FAQ
1.How can I place an order for SCBA4F through Aetrix?
Please submit a Request for Quotation (RFQ) for SCBA4F 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 SCBA4F reliable?
The price and inventory of SCBA4F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SCBA4F is usually 5 days.
3.What payment methods are accepted for SCBA4F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SCBA4F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SCBA4F?
SCBA4F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SCBA4F 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 SCBA4F?
For technical support, including SCBA4F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SCBA4F requirements.
6.How does Aetrix verify that SCBA4F is sourced from the original manufacturer or authorized distributors?
All SCBA4F 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 SCBA4F meets industry standards.
7.What is the process for return or replacement of SCBA4F?
All SCBA4F units undergo pre-shipment inspection (PSI). If there is an issue with SCBA4F, 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 SCBA4F part is unused and in its original packaging.
Return procedure for SCBA4F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SCBA4F Tags
-
HDS10M-13
Diodes Incorporated
-
CD-MBL106S
Bourns Inc.
-
MB10S-13
Diodes Incorporated
-
CD-MBL206SL
Bourns Inc.
-
MB4S-TP
Micro Commercial Co
-
MB6S-TP
Micro Commercial Co
-
CD-MBL210S
Bourns Inc.
-
BAS3007ARPPE6327HTSA1
Infineon Technologies
-
DF02M
Diodes Incorporated
-
CD-MBL210SL
Bourns Inc.
-
DF04M
Diodes Incorporated
-
DF01M
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
