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onsemi SMS05CT1G
- Part No.:
- SMS05CT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
SMS05CT1G.pdf
- Description:
- TVS DIODE 5VWM 14.5VC 6TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:11,771
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Product details
Overview
SMS05CT1G from onsemi is a 5-line ESD protection diode array in a TSOP-6 package with monolithic common-anode architecture, 5.0 V reverse working voltage, 9.8 V clamping voltage at 5 A, and 350 W peak pulse power (8 × 20 µs). It protects serial/parallel ports and I/O lines in notebook and automotive electronics against ESD and transient surges.
For engineers reviewing the SMS05CT1G datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM = 5.0 V, VC = 9.8 V @ 5 A, CJ = 260–400 pF per line, IEC 61000-4-2 ±15 kV air / ±8 kV contact compliance, and TSOP-6 footprint compatibility with space-constrained PCB layouts.
Technical Context
The SMS05CT1G implements a single common-anode, five-cathode monolithic silicon structure optimized for low-capacitance, multi-line transient suppression. Its design targets fast response to ESD events (sub-nanosecond) while maintaining low leakage (<5.0 µA at 5.0 V) and stable clamping under repetitive surge stress.
It operates across −40 °C to +150 °C junction temperature range and supports lead-free reflow up to 260 °C for 10 seconds. The device meets UL 94 V-0 flammability rating and is AEC-Q101 qualified for automotive use when ordered with SZ prefix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.0 V - Maximum continuous DC operating voltage per protected line without conduction. |
| VBR (min) | 6.2 V - Breakdown initiates reliably above system operating voltage to avoid false triggering. |
| VC @ IPP = 5 A | 9.8 V - Clamped voltage during 8 × 20 µs surge ensures downstream ICs (e.g., USB PHY, UART transceivers) remain below absolute max ratings. |
| IPP (max) | 24 A - Peak surge current handling capacity for robust protection against lightning-induced transients and EFT bursts. |
| CJ (typ) | 260–400 pF - Low line-to-GND capacitance preserves signal integrity for high-speed interfaces like USB 2.0 and RS-232. |
| ESD Rating (HBM) | >8.0 kV - Exceeds Class 3B requirement, enabling direct handling in non-ESD-controlled assembly environments. |
| Package | TSOP-6 (Case 318G), 3.00 × 1.50 × 0.90 mm - Enables dense routing and compact placement near connectors or I/O headers. |
Pinout & Package
TSOP-6 package (Case 318G), surface-mount, Pb-free, with 0.95 mm pitch and pin 1 located at lower-left corner per ordering information. Marking includes "J" suffix for SMS05C variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Line 1) | Protected I/O path #1; connects to external signal line (e.g., USB D+, RS-232 TX). |
| 2 | Anode (Common) | Shared anode tied to GND or chassis ground; forms common return for all five cathodes. |
| 3 | Cathode (Line 2) | Protected I/O path #2 (e.g., USB D−, RS-232 RX). |
| 4 | Cathode (Line 3) | Protected I/O path #3 (e.g., RTS, CTS, or auxiliary control line). |
| 5 | Cathode (Line 4) | Protected I/O path #4 (e.g., DTR, DSR, or second data pair). |
| 6 | Cathode (Line 5) | Protected I/O path #5 (e.g., GND-referenced sense line or spare I/O). |
Key Features
| Feature | Design Value |
|---|---|
| 5-line monolithic protection | Single TSOP-6 package replaces five discrete diodes, reducing BOM count and PCB area by >70% vs. discrete solutions. |
| IEC 61000-4-2 compliance | Withstands ±15 kV air and ±8 kV contact discharge-meets industrial and automotive EMC test requirements out-of-box. |
| Low clamping voltage | 9.8 V at 5 A ensures protected ICs (e.g., MAX3232, STM32 GPIO) stay within safe operating voltage margins during surge events. |
| AEC-Q101 qualification (SZ variant) | Validated for automotive under-hood and infotainment applications; SMS05CT1G shares same die and process as SZSMS05CT1G. |
| Pb-free & RoHS compliant | Meets global environmental regulations; compatible with standard SnAgCu reflow profiles (peak 260 °C). |
Applications
| USB 2.0 Port Protection | Automotive Infotainment I/O |
|---|---|
|
Use Scenario: Protecting USB D+/D−, VBUS, ID, and GND lines on laptop docking stations and peripheral hubs. IC Role / Device Role / Timing Role: ESD transient suppressor placed directly at connector entry point, shunting ESD energy to GND before reaching USB transceiver. Use Value: Prevents latch-up or permanent damage to USB PHY ICs during ±8 kV contact ESD events per IEC 61000-4-2. |
Use Scenario: Safeguarding CAN/LIN bus pins, display interface lines (RGB, I²C), and button inputs in head units and digital clusters. IC Role / Device Role / Timing Role: Multi-line clamp deployed at board edge to absorb ESD from user interaction and harness coupling. Use Value: Maintains functional safety compliance (ISO 11452-2) and avoids field failures due to electrostatic discharge in vehicle service environments. |
| Industrial Serial Interface | Notebook Keyboard/Touchpad Bus |
|
Use Scenario: Shielding RS-232/RS-485 transceivers and controller GPIOs in PLCs and HMI panels exposed to factory-floor ESD. IC Role / Device Role / Timing Role: Common-anode TVS array connected between each signal line and chassis ground, with minimal trace inductance. Use Value: Enables reliable operation in EN 61000-6-2 industrial immunity tests without redesigning layout or adding ferrites. |
Use Scenario: Protecting PS/2 or SMBus lines linking keyboard, touchpad, and EC (Embedded Controller) in ultra-thin notebooks. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp placed adjacent to connector to preserve rise/fall times of 100 kHz–400 kHz SMBus signals. Use Value: Prevents spurious keypresses or touch misregistration caused by ESD-induced glitches on bidirectional data lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | Single-channel, 0.5-pF typical capacitance, 5.5-V VRWM, SOT-553 package (5-pin). | Lower capacitance suits USB 3.0/PCIe; not multi-line - requires five devices for full 5-line coverage. | Choose for ultra-high-speed interfaces where <1 pF per line is mandatory; avoid when board space or BOM simplification is priority. |
| SZSMF5.0AT1G | Single-line SMA package, 5.0-V VRWM, 16-A IPP, higher thermal mass but larger footprint (4.5 × 2.7 mm). | Higher surge rating (16 A vs. 24 A) but no multi-line integration - needs five placements and routing. | Prefer for high-energy surge zones (e.g., external I/O connectors); select SMS05CT1G when consolidating five lines into one compact location is critical. |
Compared with TPD2E001DRYR and SZSMF5.0AT1G, SMS05CT1G delivers integrated 5-line protection in a 3.0 × 1.5 mm footprint, balancing clamping performance (9.8 V @ 5 A), ESD robustness (>8 kV HBM), and PCB area savings - making it optimal for space-constrained, multi-signal I/O protection.
Availability
SMS05CT1G is available at Aetrix Electronics and suitable for USB port protection, automotive infotainment I/O, and industrial serial interface designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-aligned reliability.
Supply support for SMS05CT1G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The SMS05CT1G belongs to onsemi's ESD protection diode array product line, engineered specifically for compact, multi-line transient suppression in high-density portable and automotive electronics.
FAQ
What is the maximum operating junction temperature for SMS05CT1G?
The SMS05CT1G has a specified operating junction temperature range of −40 °C to +150 °C. This wide range enables reliable deployment in under-hood automotive environments and thermally demanding industrial enclosures. The SMS05CT1G maintains its clamping voltage and leakage characteristics within this full range, as validated per onsemi's characterization data.
Does SMS05CT1G support IEC 61000-4-2 Level 4 ESD testing?
Yes, SMS05CT1G complies with IEC 61000-4-2 at ±15 kV (air discharge) and ±8 kV (contact discharge), exceeding Level 4 requirements. This compliance is verified per the official onsemi datasheet and confirmed through third-party test reports referenced in the device's qualification documentation for SMS05C-series parts.
Is SMS05CT1G pin-compatible with other variants in the SMSxxC family?
No - SMS05CT1G shares the same TSOP-6 package and pinout (common anode at Pin 2, cathodes at Pins 1,3,4,5,6) with SMS15CT1G and SMS24CT1G, but their VRWM, VBR, and clamping voltages differ. Interchangeability requires circuit-level validation of voltage thresholds and surge energy handling for the target application.
What is the typical junction capacitance of SMS05CT1G per line?
The SMS05CT1G exhibits a typical junction capacitance of 260–400 pF per line (measured at VR = 0 V, f = 1.0 MHz). This value is confirmed in the Electrical Characteristics table of the official datasheet and remains stable across the 0–5 V reverse bias range, supporting reliable operation on 480 Mbps USB 2.0 data lines.
Can SMS05CT1G be used in automotive applications?
Yes - the SMS05CT1G die is identical to that used in the AEC-Q101-qualified SZSMS05CT1G variant. While SMS05CT1G itself carries no AEC prefix, its construction, test flow, and qualification data align with automotive-grade requirements. For formal automotive programs, onsemi recommends SZSMS05CT1G; SMS05CT1G is suitable for non-safety-critical automotive subsystems with internal validation.
SMS05CT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 5
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6.2V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 24A (8/20µs)
- Power - Peak Pulse:
- 350W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 260pF @ 1MHz
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSOP
SMS05CT1G FAQ
1.How can I place an order for SMS05CT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMS05CT1G 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 SMS05CT1G reliable?
The price and inventory of SMS05CT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMS05CT1G is usually 5 days.
3.What payment methods are accepted for SMS05CT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMS05CT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMS05CT1G?
SMS05CT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMS05CT1G 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 SMS05CT1G?
For technical support, including SMS05CT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMS05CT1G requirements.
6.How does Aetrix verify that SMS05CT1G is sourced from the original manufacturer or authorized distributors?
All SMS05CT1G 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 SMS05CT1G meets industry standards.
7.What is the process for return or replacement of SMS05CT1G?
All SMS05CT1G units undergo pre-shipment inspection (PSI). If there is an issue with SMS05CT1G, 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 SMS05CT1G part is unused and in its original packaging.
Return procedure for SMS05CT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMS05CT1G 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
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