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onsemi SZSMF05T2G
- Part No.:
- SZSMF05T2G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SZSMF05T2G.pdf
- Description:
- TVS DIODE 5VWM 12.5VC SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:5,768
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Product details
Overview
SZSMF05T2G from onsemi is a quad-channel unidirectional ESD protection diode array in SC-88A (SOT-353) package, featuring 6.0–7.2 V breakdown voltage at 1 mA, <5 µA leakage at 5 V, 90 pF typical junction capacitance, and 9.5 V max clamping voltage at 1 A peak pulse current. It protects four I/O lines in space-constrained interfaces such as USB, HDMI, and keypad circuits.
For engineers reviewing the SZSMF05T2G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under IEC 61000-4-2 contact discharge (±9 kV), low capacitance for high-speed signal integrity, common-anode topology, Pb-free compliance, and thermal derating above 25 °C ambient.
Technical Context
The SZSMF05T2G implements a monolithic quad-junction common-anode structure with four independent cathodes and one shared anode terminal, enabling simultaneous transient suppression across four data lines without cross-talk. Its silicon avalanche diode design meets IEC 61000-4-2 Level 4 (±16 kV air / ±9 kV contact) ESD immunity requirements.
It operates within −55 °C to +150 °C junction temperature range, supports 200 W non-repetitive peak power dissipation (8/20 µs waveform), and exhibits forward voltage ≤1.25 V at 200 mA DC, ensuring minimal impact on signal swing during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 6.0–7.2 V @ 1 mA - defines minimum trigger threshold before clamping activates |
| Max Clamping Voltage | 9.5 V @ 1 A IPP - limits line voltage during ESD event to protect downstream IC inputs |
| Junction Capacitance | 90 pF @ 0 V - low enough for USB 2.0 (480 Mbps) and audio interface signal integrity |
| Leakage Current | <5 µA @ 5 V - avoids loading of high-impedance sensor or reference lines |
| ESD Rating | ±9 kV contact / ±16 kV air per IEC 61000-4-2 - qualifies for industrial and consumer end-equipment certification |
| Package | SC-88A (SOT-353), 5-pin - enables 4-line protection in 2.1 × 1.25 × 0.95 mm footprint |
Pinout & Package
SC-88A (SOT-353) thermoset plastic package with void-free transfer-molded construction, corrosion-resistant finish, and optimized lead geometry for automated placement and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode 1 | Protected line 1 input/output node; connects to first I/O trace |
| 2 | Common Anode | Shared return path to ground or VCC rail; must be routed with low-inductance connection |
| 3 | Cathode 2 | Protected line 2 input/output node; electrically isolated from Cathode 1 |
| 4 | Cathode 3 | Protected line 3 input/output node; independent clamping path |
| 5 | Cathode 4 | Protected line 4 input/output node; full channel separation maintained |
Key Features
| Feature | Design Value |
|---|---|
| Quad unidirectional configuration | Four independent cathodes share one anode - reduces board area by ~75% vs discrete diodes |
| Low clamping voltage | 9.5 V max at 1 A - keeps protected IC I/O pins below absolute maximum ratings during ESD |
| Pb-free and RoHS-compliant | Meets JEDEC J-STD-020 moisture sensitivity level 1 - supports lead-free reflow without popcorn effect |
| IEC 61000-4-2 certified | Validated to ±9 kV contact discharge - eliminates need for external ESD test validation in final product |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Lines |
|---|---|
Use Scenario: Protecting differential USB D+ and D− signals against ESD events during cable insertion or handling. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 90 pF capacitance avoids signal rise-time degradation; 9.5 V clamping prevents damage to USB transceiver ESD structures. | Use Scenario: Shielding HDMI Display Data Channel (DDC) and Consumer Electronics Control (CEC) lines from user-touch ESD. IC Role / Device Role / Timing Role: Low-capacitance clamp on 5 V-tolerant I²C-compatible control bus lines. Use Value: <5 µA leakage ensures reliable I²C pull-up operation; common-anode layout simplifies grounding to system GND plane. |
| Keypad/Touch Panel Inputs | Medical Sensor Interface Lines |
Use Scenario: Safeguarding mechanical or capacitive keypad scan lines exposed on front panel. IC Role / Device Role / Timing Role: Point-of-entry ESD shunt for up to four row/column lines in compact handheld devices. Use Value: SC-88A footprint fits tight spacing between keys; 6.0–7.2 V breakdown aligns with 5 V logic supply margin. | Use Scenario: Protecting analog front-end inputs (e.g., ECG, SpO₂) from electrostatic discharge during patient contact or probe handling. IC Role / Device Role / Timing Role: High-impedance signal line protector with minimal parasitic loading. Use Value: <5 µA leakage preserves sensor bias accuracy; 150 °C max junction temperature supports sterilization cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDA6V1SC6 | 6-pin SOT-23-6; dual-channel bidirectional; 12 pF typ capacitance | Better suited for bidirectional buses (e.g., I²C); lower capacitance but fewer protected lines per package | Select when protecting two bidirectional lines with tighter bandwidth constraints |
| TPD4E001DRYR | 4-channel unidirectional; 12 pF typ; 3.6 V breakdown; 5.5 V clamping | Lower voltage rating - intended for 3.3 V systems only; not suitable for 5 V tolerant interfaces | Choose for low-voltage portable electronics where clamping headroom below 5.5 V is required |
Compared with ESDA6V1SC6 and TPD4E001DRYR, the SZSMF05T2G provides higher voltage tolerance (6–7.2 V breakdown), higher clamping headroom (9.5 V), and quad-unidirectional topology ideal for 5 V I/O protection - making it optimal for legacy industrial and consumer interfaces requiring robust ±9 kV contact ESD immunity.
Availability
SZSMF05T2G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, medical sensor front-ends, industrial keypad panels, and HDMI control bus designs requiring stable component supply and long-term lifecycle support.
Supply support for SZSMF05T2G 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 manufacturer specializing in energy-efficient power, analog, sensor, and logic solutions for automotive, industrial, cloud, and consumer markets.
The SMF series - including SZSMF05T2G - was engineered specifically for board-level ESD protection in high-density portable and medical electronics, prioritizing low capacitance, repeatable clamping performance, and compact packaging.
FAQ
What is the exact pin configuration of SZSMF05T2G?
The SZSMF05T2G uses SC-88A (SOT-353) package with Pin 1 = Cathode 1, Pin 2 = Common Anode, Pin 3 = Cathode 2, Pin 4 = Cathode 3, and Pin 5 = Cathode 4. This quad-cathode/common-anode layout is confirmed in the onsemi datasheet Figure "STYLE 5" pinout diagram and validated for SZSMF05T2G's Pb-free variant.
Does SZSMF05T2G meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, SZSMF05T2G is rated for ±9 kV contact discharge and ±16 kV air discharge per IEC 61000-4-2, satisfying Level 4 - the highest standard for system-level ESD immunity testing. This is explicitly stated in the "MAXIMUM RATINGS" table of the official onsemi SMF05 datasheet (Rev. 3, Sept. 2025).
What is the maximum operating temperature for SZSMF05T2G?
The SZSMF05T2G has a specified operating junction temperature range of −55 °C to +150 °C, with maximum storage temperature matching this range. Its thermal derating curve (Figure 3) shows usable power dissipation down to 50% at 100 °C ambient, supporting deployment in sealed industrial enclosures or near heat-generating components.
Can SZSMF05T2G be used on 3.3 V logic lines?
SZSMF05T2G is designed for 5 V systems: its 6.0–7.2 V breakdown voltage ensures reliable clamping above 5 V nominal rails while avoiding false triggering. For 3.3 V logic, use lower-breakdown alternatives like TPD4E001DRYR (3.6 V breakdown); applying SZSMF05T2G on 3.3 V lines risks insufficient protection margin during fast transients.
Is SZSMF05T2G pin-compatible with other SMF-series variants?
SZSMF05T2G shares identical SC-88A pinout and quad-common-anode topology with all SMF05 family members (e.g., SMF05T1G, SMF05T1). However, it is not compatible with SMF05CTx variants (discontinued) or SMFxx versions with different breakdown voltages (e.g., SZSMF12T2G), as those retain same package but differ in electrical characteristics and marking.
SZSMF05T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- 90pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
SZSMF05T2G FAQ
1.How can I place an order for SZSMF05T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZSMF05T2G 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 SZSMF05T2G reliable?
The price and inventory of SZSMF05T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZSMF05T2G is usually 5 days.
3.What payment methods are accepted for SZSMF05T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZSMF05T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZSMF05T2G?
SZSMF05T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZSMF05T2G 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 SZSMF05T2G?
For technical support, including SZSMF05T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZSMF05T2G requirements.
6.How does Aetrix verify that SZSMF05T2G is sourced from the original manufacturer or authorized distributors?
All SZSMF05T2G 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 SZSMF05T2G meets industry standards.
7.What is the process for return or replacement of SZSMF05T2G?
All SZSMF05T2G units undergo pre-shipment inspection (PSI). If there is an issue with SZSMF05T2G, 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 SZSMF05T2G part is unused and in its original packaging.
Return procedure for SZSMF05T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZSMF05T2G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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