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onsemi SMF05T1G
- Part No.:
- SMF05T1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SMF05T1G.pdf
- Description:
- TVS DIODE 5VWM 12.5VC SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:12,673
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMF05T1G from onsemi is a quad unidirectional ESD protection diode array in SC-88A (SOT-353) package, featuring 6.1–7.2 V breakdown voltage at 1 mA, <5 µA leakage at 5 V, 90 pF typical capacitance, and 9.5 V max clamping voltage at 12 A peak pulse current. It protects four I/O lines in space-constrained consumer electronics such as smartphones and medical sensors.
For engineers reviewing the SMF05T1G datasheet, pinout, applications, or equivalent options, key selection criteria include IEC 61000-4-2 ±16 kV air/±9 kV contact ESD compliance, low clamping voltage for signal integrity preservation, common-anode quad configuration for board-area efficiency, and Pb-free SC-88A packaging compatible with automated SMT assembly.
Technical Context
The SMF05T1G integrates four independent silicon avalanche diodes with a shared anode terminal, enabling simultaneous transient suppression across four data or control lines without cross-coupling. Its design targets fast response to sub-nanosecond ESD events while maintaining low dynamic capacitance to avoid signal distortion in high-speed interfaces like USB 2.0 or HDMI DDC lines.
It operates within −55 °C to +150 °C junction temperature range and sustains non-repetitive 200 W peak pulse power per line under 8/20 µs waveform. Clamping performance is characterized up to 12.5 A peak current, with forward clamping voltage ≤1.25 V at 200 mA DC forward current - critical for protecting low-voltage logic inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 6.1–7.2 V @ 1 mA - defines minimum trigger threshold before clamping activates |
| Max Clamping Voltage | 9.5 V @ 12 A IPP - limits voltage seen by protected IC during worst-case ESD strike |
| Leakage Current | <5 µA @ 5 V VRWM - ensures negligible standby power loss and signal loading |
| Junction Capacitance | 90 pF TYP @ 0 V - preserves signal integrity on lines up to ~100 MHz (e.g., I²C, UART) |
| ESD Rating | ±16 kV air / ±9 kV contact per IEC 61000-4-2 - meets industrial and portable device immunity requirements |
| Package | SC-88A (SOT-353), 5-pin - enables compact 2.1 × 1.25 × 0.95 mm footprint for high-density PCB layouts |
| Peak Pulse Power | 200 W @ 8/20 µs - handles single-event transients without degradation |
Pinout & Package
SC-88A (SOT-353) thermoset plastic package with void-free transfer molding, corrosion-resistant finish, and optimized solderability for reflow and wave soldering. Designed for high-yield automated placement and inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode 1 | Protected line 1 cathode connection; reverse-biased during normal operation |
| 2 | Common Anode | Shared anode node for all four diodes; connects to VCC or ground depending on bias scheme |
| 3 | Cathode 2 | Protected line 2 cathode connection; electrically isolated from other cathodes |
| 4 | Cathode 3 | Protected line 3 cathode connection; supports independent line-level protection |
| 5 | Cathode 4 | Protected line 4 cathode connection; enables four-line protection in single 5-pin footprint |
Key Features
| Feature | Design Value |
|---|---|
| Quad unidirectional configuration | Four independent ESD paths sharing one anode terminal - reduces component count and layout area by 75% vs discrete diodes |
| Low clamping voltage | 9.5 V max at 12 A - keeps downstream logic below absolute maximum ratings during ESD events |
| Pb-free SC-88A package | RoHS-compliant, 2.1 × 1.25 mm outline - supports lead-free reflow profiles and high-density routing |
| IEC 61000-4-2 certified | ±16 kV air / ±9 kV contact - satisfies end-equipment EMI immunity certification requirements out-of-box |
| Low leakage & capacitance | <5 µA @ 5 V, 90 pF TYP - avoids DC loading and AC signal attenuation on sensitive analog or digital I/O |
Applications
| USB 2.0 Data Lines | HDMI DDC Channel |
|---|---|
Use Scenario: Protecting differential USB 2.0 D+ and D− lines against ESD during cable insertion and handling in portable devices. IC Role / Device Role / Timing Role: ESD transient suppressor placed immediately before USB PHY input pins. Use Value: 90 pF capacitance avoids signal rise-time degradation; 9.5 V clamping prevents PHY latch-up or damage. | Use Scenario: Safeguarding HDMI Display Data Channel (DDC) SDA/SCL lines connecting source and display in AV equipment. IC Role / Device Role / Timing Role: Bidirectional ESD clamp on open-drain I²C-compatible bus lines operating at 5 V. Use Value: Common-anode architecture allows single-supply biasing; low leakage preserves bus pull-up functionality. |
| Medical Sensor Interfaces | Industrial Control I/O |
Use Scenario: Shielding analog front-end inputs of patient-monitoring sensors (e.g., ECG, SpO₂) from electrostatic discharge in clinical environments. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on high-impedance sensor signal paths. Use Value: 90 pF capacitance minimizes signal attenuation; ±16 kV air rating exceeds IEC 61000-4-2 Level 4 immunity requirement. | Use Scenario: Protecting programmable logic controller (PLC) digital input channels exposed to field wiring in factory automation. IC Role / Device Role / Timing Role: Transient voltage suppressor on 24 V DC input lines with optocoupler isolation. Use Value: 200 W peak power rating handles induced surges from inductive load switching; −55 °C to +150 °C operating range suits harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DPYR | Lower capacitance (1.5 pF), dual-channel only, same SC-70-6 package | Optimized for >1 GHz RF/data lines (e.g., USB 3.0, MIPI); not quad-line capable | Select when ultra-low capacitance is prioritized over channel count and cost-per-line is secondary |
| ESD5Z5.0T1G | Single-channel, SOD-523 package, identical breakdown (6.1–7.2 V) and clamping (9.5 V) | Requires four separate placements; larger total footprint than SMF05T1G's integrated quad solution | Choose when board layout flexibility outweighs component count reduction or when legacy single-diode sourcing is preferred |
Compared with TPD4E001DPYR and ESD5Z5.0T1G, the SMF05T1G delivers optimal balance of channel density, ESD robustness, and board-area efficiency - uniquely supporting four-line protection in one SC-88A package without sacrificing clamping performance or thermal derating capability.
Availability
SMF05T1G is available at Aetrix Electronics and suitable for USB interface protection, medical sensor front-ends, and industrial I/O modules requiring stable component supply and RoHS-compliant packaging.
Supply support for SMF05T1G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The SMF05T1G belongs to onsemi's transient voltage suppression (TVS) diode portfolio, engineered specifically for board-level ESD protection in space-constrained, high-reliability portable and medical electronics.
FAQ
What is the exact pin configuration of the SMF05T1G?
The SMF05T1G uses Style 5 pinout in SC-88A: Pin 1 = Cathode 1, Pin 2 = Common Anode, Pin 3 = Cathode 2, Pin 4 = Cathode 3, Pin 5 = Cathode 4. This quad-common-anode arrangement allows independent protection of four signal lines with shared biasing, confirmed in onsemi's SMF05/D datasheet Figure 1 and mechanical drawing CASE 419A-02.
Does the SMF05T1G meet IEC 61000-4-2 Level 4 ESD immunity?
Yes, the SMF05T1G is rated for ±16 kV air discharge and ±9 kV contact discharge per IEC 61000-4-2, satisfying Level 4 - the highest severity class for system-level ESD testing. This rating is explicitly stated in the "Maximum Ratings" table on page 3 of the official SMF05/D datasheet.
Can the SMF05T1G be used on 3.3 V logic lines?
Yes, the SMF05T1G is suitable for 3.3 V systems: its 6.1–7.2 V breakdown voltage ensures no conduction during normal operation, and its 9.5 V clamping voltage remains safely below the 13.2 V absolute maximum rating of most 3.3 V ICs. The <5 µA leakage at 5 V further guarantees minimal impact on 3.3 V rail stability.
What is the thermal derating behavior of the SMF05T1G above 25 °C ambient?
The SMF05T1G follows a linear derating curve from 100% peak power at 25 °C down to 0% at 150 °C, as shown in Figure 3 of the datasheet. At 85 °C ambient, it retains approximately 65% of its 200 W peak pulse rating - critical for sustained reliability in enclosed industrial enclosures or automotive cabin environments.
Is the SMF05T1G pin-compatible with earlier SMF05T1 or SMF05T2G variants?
Yes, the SMF05T1G shares identical SC-88A packaging, pinout (Style 5), and electrical specifications with SMF05T1 and SMF05T2G. The "G" suffix denotes Pb-free compliance per onsemi's ordering table on page 2 of SMF05/D, with no functional or mechanical differences affecting PCB layout or circuit design.
SMF05T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 90pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
SMF05T1G FAQ
1.How can I place an order for SMF05T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF05T1G 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 SMF05T1G reliable?
The price and inventory of SMF05T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF05T1G is usually 5 days.
3.What payment methods are accepted for SMF05T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF05T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF05T1G?
SMF05T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF05T1G 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 SMF05T1G?
For technical support, including SMF05T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF05T1G requirements.
6.How does Aetrix verify that SMF05T1G is sourced from the original manufacturer or authorized distributors?
All SMF05T1G 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 SMF05T1G meets industry standards.
7.What is the process for return or replacement of SMF05T1G?
All SMF05T1G units undergo pre-shipment inspection (PSI). If there is an issue with SMF05T1G, 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 SMF05T1G part is unused and in its original packaging.
Return procedure for SMF05T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF05T1G 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
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D5V0L1B2WS-7
Diodes Incorporated
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