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onsemi MA3075WALT1
- Part No.:
- MA3075WALT1
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MA3075WALT1.pdf
- Description:
- TVS DIODE 6.5VWM SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,045
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Product details
Overview
MA3075WALT1 from onsemi is a dual common-anode Zener ESD protection diode in SOT-23 package, designed for transient overvoltage and electrostatic discharge protection of two signal lines. It features 7.5 V nominal zener voltage (7.2–7.9 V at 5 mA), 80 pF typical capacitance at 0 V, <1 µA leakage at 5 V, and meets 16 kV HBM / 30 kV IEC 61000-4-2 air & contact ESD standards. It is used in space-constrained interfaces of computers, communication systems, and medical equipment.
For engineers reviewing the MA3075WALT1 datasheet, pinout, applications, or equivalent options, key selection criteria include dual-line unidirectional clamping capability, low capacitance for high-speed data lines, AEC-Q101 qualification for automotive-grade reliability, and SOT-23 footprint compatibility with automated assembly.
Technical Context
This device implements a monolithic dual-junction Zener structure with shared anode (Pin 3) and separate cathodes (Pins 1 and 2), enabling independent clamping of two bidirectional signal paths. Its low 80 pF junction capacitance and sub-1 µA reverse leakage at 5 V support USB 2.0, HDMI, and other high-speed digital interfaces without signal integrity degradation.
The 7.5 V zener breakdown (±0.3 V tolerance at 5 mA) provides precise overvoltage thresholding for 5 V logic rails, while its 15 W peak pulse power rating (100 µs) handles IEC 61000-4-2 ESD transients. Thermal resistance of 556 °C/W and −55 °C to +150 °C operating range ensure robustness in industrial and automotive ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 7.5 V nominal (7.2–7.9 V @ 5 mA); sets precise clamping threshold for 5 V systems |
| Capacitance | 80 pF typical @ 0 V, 1 MHz; preserves signal integrity on USB/HDMI lines |
| ESD Rating | 16 kV HBM, 30 kV IEC 61000-4-2 air/contact; exceeds industrial and automotive ESD immunity requirements |
| Leakage Current | <1 µA @ 5 V; minimizes standby power loss and avoids false triggering |
| Package | SOT-23 (TO-236), 2.90 × 1.30 × 1.00 mm; enables high-density PCB layout |
| Power Dissipation | 225 mW steady-state (derated above 25 °C); supports continuous operation in compact enclosures |
| Operating Temp | −55 °C to +150 °C; qualified for under-hood automotive and industrial environments |
Pinout & Package
SOT-23 (Case 318, Style 12) surface-mount package with 3 terminals: dual cathodes (Pins 1 and 2) and shared anode (Pin 3). Void-free thermosetting plastic case ensures solderability and corrosion resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Channel A) | Clamps positive transients on first protected line; connects to I/O trace |
| Pin 2 | Cathode (Channel B) | Clamps positive transients on second protected line; independent from Pin 1 |
| Pin 3 | Common Anode | Reference node tied to system ground or supply rail; enables dual-channel operation in single package |
Key Features
| Feature | Design Value |
|---|---|
| Dual Common-Anode Zener Structure | Protects two independent signal lines with one SOT-23 footprint, reducing board area by ~50% vs. discrete diodes |
| Low Capacitance (80 pF) | Enables use on 480 Mbps USB 2.0 and other high-speed serial interfaces without bandwidth limiting |
| AEC-Q101 Qualified | Validated for automotive applications including infotainment and body control modules requiring extended temperature and reliability compliance |
| Pb-Free, Halogen-Free | Meets RoHS Directive 2011/65/EU and JEDEC JS709E; compatible with lead-free reflow profiles |
Applications
| USB 2.0 Data Lines | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pair in portable USB peripherals against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor clamping each line to ground via common-anode configuration. Use Value: 80 pF capacitance prevents signal rise-time degradation; 7.5 V breakdown aligns with 3.3 V I/O rail margin. | Use Scenario: Safeguarding TMDS clock and data channels in set-top boxes and displays exposed to handling ESD. IC Role / Device Role / Timing Role: Dual-channel ESD clamp placed before HDMI receiver IC to limit voltage excursion below absolute maximum ratings. Use Value: 30 kV IEC air discharge rating exceeds HDMI compliance requirement (±15 kV); SOT-23 fits tight connector-side layout. |
| Automotive Infotainment Ports | Medical Equipment I/O Interfaces |
Use Scenario: Shielding USB-C and auxiliary audio jacks in vehicle head units from ESD in dry cabin environments. IC Role / Device Role / Timing Role: AEC-Q101-qualified dual Zener providing line-to-ground clamping for multiple low-voltage interfaces. Use Value: −55 °C to +150 °C operating range supports under-dash mounting; common-anode design simplifies grounding. | Use Scenario: Protecting RS-232 and analog sensor inputs on patient monitors and diagnostic devices from operator-induced ESD. IC Role / Device Role / Timing Role: Low-leakage (<1 µA) dual Zener preventing DC offset errors while suppressing transients up to 16 kV HBM. Use Value: Sub-µA leakage avoids loading sensitive analog front-ends; RoHS-compliant materials meet medical device material restrictions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Zener ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF5.0AT1G | Single-channel, 5.0 V zener, 100 pF capacitance, same SOT-23 package | Requires two devices for dual-line protection; higher capacitance may affect >100 Mbps signals | Use when lower clamping voltage (5.0 V) is required and board space allows duplication |
| TPD2E001DRYR | Dual-channel, 5.5 V clamping, 12 pF capacitance, integrated ESD protection with TVS architecture | Lower capacitance ideal for USB 3.0; not Zener-based - uses avalanche breakdown with tighter voltage tolerance | Select for high-speed interfaces needing <15 pF; verify compatibility with 5 V rail margin and system-level ESD test plan |
Compared with SMF5.0AT1G and TPD2E001DRYR, MA3075WALT1 offers balanced performance for cost-sensitive 5 V systems where 7.5 V clamping and 80 pF are acceptable - delivering dual-line protection in one RoHS-compliant, AEC-Q101-qualified SOT-23 device without requiring layout redesign.
Availability
MA3075WALT1 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment port hardening, and medical device I/O shielding requiring stable component supply and long-term lifecycle support.
Supply support for MA3075WALT1 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 power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.
The MA3075WALT1 belongs to onsemi's Zener ESD Protection Diode product line, engineered specifically for compact, high-reliability transient suppression in space-constrained consumer, computing, and automotive electronics.
FAQ
What is the exact pin configuration of the MA3075WALT1?
The MA3075WALT1 uses SOT-23 package Style 12: Pin 1 is Cathode (Channel A), Pin 2 is Cathode (Channel B), and Pin 3 is the Common Anode. This dual-cathode, single-anode arrangement enables independent clamping of two signal lines to a shared reference, confirmed in the official onsemi datasheet (MA3075WALT1/D, Rev. 5).
Is the MA3075WALT1 suitable for USB 2.0 data line protection?
Yes, the MA3075WALT1 is suitable for USB 2.0 data line protection due to its 80 pF typical capacitance at 0 V and 1 MHz, which preserves signal integrity at 480 Mbps. Its 7.5 V zener voltage provides safe clamping margin above the 3.3 V logic level, and its dual-channel configuration protects both D+ and D− lines using a single SOT-23 footprint - all verified in the MA3075WALT1 datasheet.
Does the MA3075WALT1 meet automotive qualification standards?
Yes, the SZ-prefix variant SZMA3075WALT1G is AEC-Q101 qualified and PPAP capable, confirming its suitability for automotive applications. While the base MA3075WALT1G is also manufactured to the same process and specifications, the SZ prefix denotes additional site and control change requirements mandated for automotive use - as stated in the official onsemi datasheet.
What is the maximum ESD voltage the MA3075WALT1 can withstand?
The MA3075WALT1 withstands up to 16 kV per Human Body Model (HBM) and 30 kV per IEC 61000-4-2 for both air and contact discharge. These values are measured and guaranteed per the onsemi datasheet (MA3075WALT1/D), making it appropriate for end-equipment requiring robust ESD immunity in commercial and industrial environments.
What is the leakage current specification for the MA3075WALT1 at 5 V reverse bias?
The MA3075WALT1 exhibits a maximum reverse leakage current of 1 µA at 5 V reverse voltage and 25 °C, as specified in the Electrical Characteristics table of the official datasheet. This low leakage helps prevent unwanted loading of sensitive signal lines and supports reliable operation in battery-powered and low-power systems.
MA3075WALT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.2V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 15W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 80pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
MA3075WALT1 FAQ
1.How can I place an order for MA3075WALT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MA3075WALT1 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 MA3075WALT1 reliable?
The price and inventory of MA3075WALT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MA3075WALT1 is usually 5 days.
3.What payment methods are accepted for MA3075WALT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MA3075WALT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MA3075WALT1?
MA3075WALT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MA3075WALT1 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 MA3075WALT1?
For technical support, including MA3075WALT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MA3075WALT1 requirements.
6.How does Aetrix verify that MA3075WALT1 is sourced from the original manufacturer or authorized distributors?
All MA3075WALT1 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 MA3075WALT1 meets industry standards.
7.What is the process for return or replacement of MA3075WALT1?
All MA3075WALT1 units undergo pre-shipment inspection (PSI). If there is an issue with MA3075WALT1, 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 MA3075WALT1 part is unused and in its original packaging.
Return procedure for MA3075WALT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MA3075WALT1 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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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
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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