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Home > Products > Discrete Semiconductor Products > Diodes > Bridge Rectifiers

Semtech Corporation SBMA1F

Name: SBMA1F
Brand: Semtech Corporation
SKU: SBMA1F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SBMA1F

Manufacturer:: Semtech Corporation

Category:: Bridge Rectifiers

Package:: -

Datasheet:: SBMA1F.pdf

Description:: BRIDGE RECT 1PHASE 100V 1.5A

Quantity:: RFQ Add To RFQ list

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Inventory:6,990

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Product details

Overview

TDS2211P from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 22V voltage buses or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 24–40A, and 20mΩ dynamic resistance - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.

For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for flat VC vs. IPP behavior, DFN-6 package layout constraints, and compatibility with 22V working voltage systems requiring robust surge immunity per IEC 61000-4-5.

Technical Context

The TDS2211P uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown threshold - enabling near-constant clamping voltage independent of peak pulse current magnitude. Its operation differs fundamentally from conventional TVS diodes by replacing junction-based conduction with low-R_DS(on) shunt switching.

Clamping voltage remains stable from −40°C to +125°C due to minimal temperature dependence of the FET's on-resistance and trigger circuit reference. The device delivers 1120W peak pulse power handling while maintaining 175pF junction capacitance at 22V reverse bias - critical for minimizing signal distortion in high-speed bus protection.

Key Specifications

Parameter	Value and Actual Design Meaning
Working Voltage	22V - defines maximum continuous DC operating voltage on protected line without leakage degradation.
Clamping Voltage	27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge events.
Peak Pulse Current	40A (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 (±1kV, RS = 42Ω) on unsymmetrical lines.
ESD Withstand	±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity requirements for external connectors.
Dynamic Resistance	20mΩ - enables flat clamping curve; reduces voltage rise under increasing surge current versus TVS diodes with fixed RDYN.
Junction Capacitance	175pF at 22V, 1MHz - low enough for USB Type-C VBUS protection without degrading power delivery signaling integrity.
Package	DFN 1.6 × 1.6 × 0.55 mm, 6-lead - enables compact placement adjacent to connectors with minimal PCB area and thermal mass.

Pinout & Package

Package: DFN-6 (1.6 mm × 1.6 mm × 0.55 mm), RoHS-compliant, UL 94V-0 molding compound, lead-free finish, tape-and-reel packaging (3,000 pcs/reel).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3	GND	Common ground terminals - all three must be connected to maximize surge current path integrity and minimize parasitic inductance.
4, 5, 6	IN	Protected line input - pins electrically parallel; connection to VBUS or power rail requires single low-inductance trace to connector.

Key Features

Feature	Design Value
Constant-clamp architecture	Clamping voltage varies ≤0.5V across full 24–40A range and −40°C to +125°C - eliminates derating uncertainty in thermal design.
FET-based shunt protection	Replaces PN-junction TVS with <0.1Ω R_DS(on) switch - dissipates surge energy in channel rather than junction, improving reliability under repeated transients.
Low dynamic resistance	20mΩ measured between 1A–40A (8/20μs) - ensures predictable voltage overshoot during fast-rising surges (e.g., ESD, lightning-induced).
High-energy rating	1120W peak pulse power - supports industrial-grade surge immunity where standard TVS devices fail at >20A.
Compact DFN footprint	1.6 × 1.6 mm area - saves >60% board space vs. SO-8 or SOT-23 alternatives while maintaining 6-terminal current sharing.

Applications

USB Type-C Power Delivery Protection	Industrial Load Switch Input Protection
Use Scenario: Protecting VBUS line in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD and system-level surges. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed directly at connector, clamping transients before reaching PD controller and load switch. Use Value: Maintains 27.5–28V clamping across temperature and current - prevents false overvoltage shutdown or latch-up in PD controllers rated for 24V absolute max.	Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and IoT gateways subject to lightning-induced surges. IC Role / Device Role / Timing Role: Transient shunt element that diverts surge energy away from load switch FET drain, preventing gate oxide damage or avalanche failure. Use Value: Limits voltage across load switch input to ≤28V during 40A surges - avoids exceeding V_DSS rating and enables use of cost-optimized 30V FETs.
IoT Device Power Rail Protection	Storage Device Interface Protection
Use Scenario: Securing 22V auxiliary power rails in battery-backed edge sensors and wireless modules operating in harsh electromagnetic environments. IC Role / Device Role / Timing Role: Standalone EOS protector for non-data power lines, eliminating need for series impedance or RC filtering. Use Value: 175pF capacitance and 600nA leakage at 22V enable direct integration without affecting sleep-mode current or startup timing.	Use Scenario: Shielding SATA or PCIe auxiliary power lines in SSD enclosures and NAS units from ESD events during hot-plug operations. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on 22V VDDIO rails feeding interface controllers and flash memory power management ICs. Use Value: Stable clamping ensures no voltage excursion breaches 24V tolerance of PMICs or level shifters - preventing data corruption or reset glitches.

USB Type-C Power Delivery Protection

Industrial Load Switch Input Protection

Use Scenario: Protecting VBUS line in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD and system-level surges.

IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed directly at connector, clamping transients before reaching PD controller and load switch.

Use Value: Maintains 27.5–28V clamping across temperature and current - prevents false overvoltage shutdown or latch-up in PD controllers rated for 24V absolute max.

Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and IoT gateways subject to lightning-induced surges.

IC Role / Device Role / Timing Role: Transient shunt element that diverts surge energy away from load switch FET drain, preventing gate oxide damage or avalanche failure.

Use Value: Limits voltage across load switch input to ≤28V during 40A surges - avoids exceeding V_DSS rating and enables use of cost-optimized 30V FETs.

IoT Device Power Rail Protection

Storage Device Interface Protection

Use Scenario: Securing 22V auxiliary power rails in battery-backed edge sensors and wireless modules operating in harsh electromagnetic environments.

IC Role / Device Role / Timing Role: Standalone EOS protector for non-data power lines, eliminating need for series impedance or RC filtering.

Use Value: 175pF capacitance and 600nA leakage at 22V enable direct integration without affecting sleep-mode current or startup timing.

Use Scenario: Shielding SATA or PCIe auxiliary power lines in SSD enclosures and NAS units from ESD events during hot-plug operations.

IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on 22V VDDIO rails feeding interface controllers and flash memory power management ICs.

Use Value: Stable clamping ensures no voltage excursion breaches 24V tolerance of PMICs or level shifters - preventing data corruption or reset glitches.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ22A	Standard unidirectional TVS diode; 22V V_RWM, 35.5V V_C @ 12.3A (8/20μs); higher clamping voltage, no constant-clamp behavior.	Limited to lower-energy surges; clamping rises with temperature and current - unsuitable for 40A or high-temp industrial use.	Select only for cost-sensitive, low-surge environments where 35.5V clamping is acceptable and thermal derating is manageable.
SP1003-220K	Bi-directional TVS array; 22V V_RWM, 36V V_C @ 12A; 150pF typical capacitance; lacks FET-based architecture and flat clamping.	Designed for data-line ESD (e.g., USB 2.0 D+/D−); not rated for 40A power-line surges or sustained 22V DC operation.	Use only for signal-line protection; avoid for VBUS or load-switch input where high IPP and stable VC are required.

Compared with SMAJ22A and SP1003-220K, the TDS2211P provides superior surge handling via FET-based constant-clamp operation - delivering 27.5–28V clamping at 40A and −40°C to +125°C, whereas alternatives exhibit ≥35V clamping with strong current/temperature dependence and lower peak current ratings.

Availability

TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT device power rail protection requiring stable component supply, long-term lifecycle support, and verified surge performance.

Supply support for TDS2211P 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 sensing, protection, and connectivity solutions.

The TDS product line targets high-reliability EOS protection in power and interface applications where traditional TVS limitations - rising clamping voltage, thermal derating, and junction fatigue - compromise system robustness.

FAQ

What is the maximum continuous operating voltage for TDS2211P?

The TDS2211P has a reverse stand-off voltage (V_RWM) of 22V, meaning it can continuously block up to 22V DC on the protected line without significant leakage. This makes it suitable for 20V USB PD VBUS and 22V industrial auxiliary rails. Exceeding 22V risks increased reverse leakage and premature triggering. The TDS2211P is specifically rated for this voltage level per its datasheet Absolute Maximum Ratings table.

How does TDS2211P achieve constant clamping voltage across varying surge currents?

The TDS2211P achieves constant clamping using a surge-rated FET as the main conduction element, triggered by an internal precision circuit. As surge current increases, the FET's R_DS(on) decreases, counteracting voltage rise - resulting in clamping voltage of 27.5–28V from 24A to 40A. This contrasts with TVS diodes whose V_C = V_BR + I_PP × R_DYN. The TDS2211P's architecture ensures predictable protection regardless of transient magnitude.

Can TDS2211P replace a standard TVS diode in existing designs without layout changes?

No - TDS2211P requires specific PCB layout: all three IN pins (4–6) must be shorted together with a single low-inductance trace, and all three GND pins (1–3) must connect to a solid ground plane via multiple vias. Its DFN-6 footprint differs from common SOD-123 or DO-214 packages. Direct replacement without layout revision risks degraded surge performance and inconsistent clamping. The TDS2211P demands dedicated routing per its datasheet layout guidelines.

What is the junction capacitance of TDS2211P and why does it matter for USB Type-C applications?

The TDS2211P exhibits 175pF junction capacitance at 22V reverse bias and 1MHz - low enough to avoid distorting USB PD communication signals on the VBUS line while providing robust surge suppression. Higher capacitance would increase insertion loss and risk violating USB PD specification timing margins. This value is measured and guaranteed per the Electrical Characteristics table in the TDS2211P datasheet.

Does TDS2211P require external components like series resistors or RC filters for proper operation?

No - the TDS2211P operates as a standalone shunt protector with no external components required. Its integrated trigger circuit and FET eliminate the need for series impedance or timing networks. Adding external resistors would impede surge current flow and degrade clamping performance. The TDS2211P is designed for direct connection between protected line and ground, as confirmed in Figure 4 and Figure 5 of its official datasheet.

SBMA1F Specifications

Product attributes: Attribute value

Manufacturer:: Semtech Corporation

Series:: -

Package/Case:: -

Packaging:: Bulk

Product Status:: Discontinued at Digi-Key

Diode Type:: Single Phase

Technology:: Standard

Voltage - Peak Reverse (Max):: 100 V

Current - Average Rectified (Io):: 1.5 A

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 1 A

Current - Reverse Leakage @ Vr:: 2 µA @ 100 V

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

SBMA1F FAQ

1.How can I place an order for SBMA1F through Aetrix?

Please submit a Request for Quotation (RFQ) for SBMA1F 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 SBMA1F reliable?

The price and inventory of SBMA1F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBMA1F is usually 5 days.

3.What payment methods are accepted for SBMA1F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBMA1F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SBMA1F?

SBMA1F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SBMA1F 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 SBMA1F?

For technical support, including SBMA1F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBMA1F requirements.

6.How does Aetrix verify that SBMA1F is sourced from the original manufacturer or authorized distributors?

All SBMA1F 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 SBMA1F meets industry standards.

7.What is the process for return or replacement of SBMA1F?

All SBMA1F units undergo pre-shipment inspection (PSI). If there is an issue with SBMA1F, 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 SBMA1F part is unused and in its original packaging.

Return procedure for SBMA1F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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