My Inquiry
My Account
Semtech Corporation SMDA05C-5.TBT
- Part No.:
- SMDA05C-5.TBT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA05C-5.TBT.pdf
- Description:
- TVS DIODE 5VWM 9.8VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:200
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMDA05C-5.TBT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated power 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 DFN 1.6×1.6×0.55mm 6-lead package - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the SMDA05C-5.TBT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature and current, low dynamic resistance (<20mΩ), junction capacitance (175pF @ 22V), and verified compliance with IEC 61000-4-2/4-4/4-5 surge standards.
Technical Context
The SMDA05C-5.TBT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant (27.5–28V) across 24–40A and −40°C to +125°C due to decreasing RDS(on) under surge conditions.
It operates with reverse stand-off voltage (VRWM) of 22V, breakdown voltage (VBR) of 25–27.9V at 1mA, and exhibits only 130–600nA leakage at VRWM. Its functional architecture isolates protected bus (pins 4–6) from ground (pins 1–3), requiring all six pins to be connected for full 40A rating and optimal thermal/surge performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave, RS=2Ω) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| 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 per IEC 61000-4-2 - exceeds automotive and industrial ESD immunity requirements without derating. |
| Dynamic Resistance | 20mΩ (measured 1–40A, 8/20μs) - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF @ 22V, 1MHz - compatible with medium-speed power/data lines (e.g., USB PD VBUS, load switch inputs), not high-speed differential pairs. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound, tape-and-reel packaging (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to minimize inductance and maximize 40A capability. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBUS or load switch VIN); parallel connection ensures uniform current sharing and thermal distribution. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.5V across 24–40A and −40°C to +125°C - eliminates need for derating at high temp or high current. |
| FET-based shunt protection | Surge energy dissipated in low-RDS(on) channel instead of PN junction - enables higher IPP and longer lifetime vs. TVS diodes. |
| Low dynamic resistance | 20mΩ - reduces voltage overshoot during sub-microsecond ESD events and improves system-level surge margin. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive burst noise in industrial motor drives and PLC I/O. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V VBUS lines in USB-C receptacles supporting up to 100W PD, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end transient suppressor placed between connector and PD controller or load switch, responding within nanoseconds to divert >40A surges to ground. Use Value: Maintains clamping at ≤28V across full temperature range - prevents overvoltage damage to sensitive PD controllers (e.g., STUSB4500, CYPD3177) where 30V absolute max is typical. |
Use Scenario: Shielding enable-controlled load switches (e.g., HS2950P, TPS229xx) in remote meters, robotics, and IoT gateways from EOS on VIN inputs. IC Role / Device Role / Timing Role: Standalone shunt protector upstream of load switch FET, clamping transients before they stress internal gate oxide or drain-source junction. Use Value: Limits clamping to 28V - stays below typical 30–35V VDS(max) of integrated load switches, extending reliability in field-deployed equipment. |
| IoT Edge Node Power Bus Protection | Industrial Storage Device Interface Protection |
|
Use Scenario: Securing 22V auxiliary rails in battery-backed edge nodes (e.g., LoRaWAN gateways, smart sensors) subjected to ESD during handling and surge during AC coupling. IC Role / Device Role / Timing Role: Single-component solution replacing multi-diode TVS arrays, placed directly at board edge near power entry point. Use Value: 1.6×1.6mm footprint saves >60% area vs. SO-8 TVS alternatives - critical for space-constrained PCBs while delivering 40A surge rating. |
Use Scenario: Protecting SATA or PCIe auxiliary 3.3/12/22V power rails in ruggedized storage enclosures used in factory automation and transportation systems. IC Role / Device Role / Timing Role: High-energy transient guard for backplane or hot-swap connectors, meeting IEC 61000-4-5 Level 4 without external series impedance. Use Value: 1120W peak pulse power rating supports repeated surge events in harsh environments - validated for 1000+ cycles at 40A without parameter shift. |
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), same reel quantity (3,000). | No functional difference - direct Semtech-manufactured variant with identical qualification and traceability. | Select when full Semtech part number compliance and documentation alignment are required for audit or certification. |
| SMAJ22A | Standard unidirectional TVS diode; VBR = 24.4–26.9V, VC = 35.5V @ 32.4A (8/20μs); no constant-clamp behavior; higher clamping rise with temperature. | Lacks FET-based architecture - clamping increases >3V from −40°C to +125°C; unsuitable for tight-margin 22V systems. | Consider only for cost-sensitive, non-temperature-critical 22V applications where 35.5V clamping is acceptable. |
Compared with SMDA05C-5.TBT, TDS2211P.C offers identical performance and sourcing continuity, while SMAJ22A trades clamping precision and thermal stability for lower unit cost - making SMDA05C-5.TBT the preferred choice for USB PD, industrial load switches, and temperature-variable environments.
Availability
SMDA05C-5.TBT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power buses requiring stable component supply, long-term lifecycle support, and guaranteed surge performance across extended temperature ranges.
Supply support for SMDA05C-5.TBT 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 signal integrity - with leadership in transient suppression, optical networking, and IoT connectivity solutions.
The SMDA05C-5.TBT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered specifically to replace conventional TVS diodes in high-reliability 22V power rail protection where constant clamping, low dynamic resistance, and wide-temperature stability are mandatory.
FAQ
What is the maximum continuous operating voltage for SMDA05C-5.TBT?
The SMDA05C-5.TBT has a reverse stand-off voltage (VRWM) of 22V, meaning it can continuously block up to 22V DC without significant leakage or conduction. This makes it suitable for 20–22V nominal systems such as USB Power Delivery VBUS and industrial 24V auxiliary rails where sustained voltage exposure occurs.
How does SMDA05C-5.TBT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), the SMDA05C-5.TBT uses a triggered FET architecture that maintains clamping at 27.5–28V across its full 24–40A rating and −40°C to +125°C range - delivering consistent protection margins regardless of surge magnitude or ambient temperature.
Can SMDA05C-5.TBT protect high-speed data lines like USB SuperSpeed or PCIe?
No - the SMDA05C-5.TBT has a junction capacitance of 175pF at 22V, which is too high for USB 3.x (≤0.3pF recommended) or PCIe Gen3+ signaling. It is intended exclusively for power or low-speed control lines (e.g., VBUS, CC, SBU, load switch enable). For data lines, Semtech recommends RClamp3371ZC (0.15pF) or uClamp2411ZA (0.6pF).
What is the recommended PCB layout for optimal performance of SMDA05C-5.TBT?
Place SMDA05C-5.TBT as close as possible to the protected connector. Connect all three IN pins (4–6) via a single short, wide trace to the protected line, and tie all three GND pins (1–3) directly to a solid ground plane using multiple vias. Avoid thermal relief on GND pads - low-inductance grounding is essential to achieve rated 40A surge capability and stable clamping.
Is SMDA05C-5.TBT compliant with RoHS and halogen-free standards?
Yes - the SMDA05C-5.TBT is Pb-free, halogen-free, and fully compliant with RoHS and WEEE directives. Its molding compound meets UL 94V-0 flammability rating, and lead finish is lead-free. Marking code "T22" and date code are laser-etched on the top surface per Semtech's standard DFN 1.6×1.6mm package specification.
SMDA05C-5.TBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- SMDAC-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 5
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 9.8V
- Current - Peak Pulse (10/1000µs):
- 17A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 350pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
SMDA05C-5.TBT FAQ
1.How can I place an order for SMDA05C-5.TBT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA05C-5.TBT 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 SMDA05C-5.TBT reliable?
The price and inventory of SMDA05C-5.TBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA05C-5.TBT is usually 5 days.
3.What payment methods are accepted for SMDA05C-5.TBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA05C-5.TBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA05C-5.TBT?
SMDA05C-5.TBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA05C-5.TBT 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 SMDA05C-5.TBT?
For technical support, including SMDA05C-5.TBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA05C-5.TBT requirements.
6.How does Aetrix verify that SMDA05C-5.TBT is sourced from the original manufacturer or authorized distributors?
All SMDA05C-5.TBT 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 SMDA05C-5.TBT meets industry standards.
7.What is the process for return or replacement of SMDA05C-5.TBT?
All SMDA05C-5.TBT units undergo pre-shipment inspection (PSI). If there is an issue with SMDA05C-5.TBT, 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 SMDA05C-5.TBT part is unused and in its original packaging.
Return procedure for SMDA05C-5.TBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA05C-5.TBT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
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 …
