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Nexperia USA Inc. MMBZ33VA-TR
- Part No.:
- MMBZ33VA-TR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- -
- Datasheet:
-
MMBZ33VA-TR.pdf
- Description:
- MMBZ33VA-T/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
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Product details
Overview
MMBZ33VA-TR from Nexperia is a unidirectional double ESD protection diode in common-anode SOT23 configuration, designed for transient overvoltage protection of two signal lines. It delivers 26 V reverse standoff voltage, ≤25 pF capacitance at 1 MHz, and clamps to 49 V (typ.) under 2.8 A 8/20 µs surge, making it suitable for high-speed USB, HDMI, and audio interface line protection.
For engineers reviewing the MMBZ33VA-TR datasheet, MMBZ33VA-TR pinout, MMBZ33VA-TR application, or MMBZ33VA-TR equivalent, key selection criteria include low capacitance for signal integrity, dual-line protection topology, IEC 61000-4-2 ±20 kV contact/air discharge rating, and SOT23 footprint compatibility with space-constrained portable designs.
Technical Context
This device implements a common-anode dual-diode structure enabling unidirectional protection of two independent signal lines-or bidirectional protection of a single line-by leveraging symmetrical cathode terminals. Its silicon junction design achieves ultra-low leakage (<1 nA at 26 V) and tight clamping (49 V typ. at 2.8 A), critical for preserving signal fidelity in high-frequency interfaces.
The 25 pF max capacitance is measured at 0 V bias and 1 MHz, ensuring minimal loading on data lines up to ~300 MHz. Thermal limits are defined by a 150 °C max junction temperature and -55 °C to +150 °C ambient operating range, supporting industrial and automotive-adjacent environments when derated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 26 V - Maximum continuous working voltage before conduction begins; defines safe operating margin for 24 V nominal systems. |
| Clamping Voltage | 49 V (typ. at 2.8 A) - Peak voltage seen by protected circuit during IEC 61000-4-5 8/20 µs surge; ensures downstream ICs remain below absolute maximum ratings. |
| Diode Capacitance | 20–25 pF at 1 MHz, 0 V - Enables use on USB 2.0 (480 Mbps), HDMI 1.4, and I²S audio lines without signal degradation. |
| ESD Rating | ±20 kV per IEC 61000-4-2 - Validated for both contact and air discharge, meeting industrial and consumer end-equipment immunity requirements. |
| Peak Pulse Current | 2.8 A (8/20 µs) - Sustains transient energy from lightning-induced surges or cable discharge events without failure. |
| Leakage Current | <1 nA at 26 V - Prevents DC loading or battery drain in always-on portable electronics and sensor interfaces. |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 × 1.3 × 1.0 mm body, optimized for automated reflow assembly and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to first protected signal line; conducts during positive transients relative to common anode. |
| 2 (K2) | Cathode of Diode 2 | Connects to second protected signal line; enables independent clamping path for dual-line architecture. |
| 3 (A) | Common Anode | Connected to system ground or reference plane; serves as shared return path for both ESD current paths. |
Key Features
| Feature | Design Value |
|---|---|
| Common-anode dual-diode topology | Enables compact protection of two independent signal lines with single-component placement and shared ground connection. |
| 25 pF max capacitance | Preserves signal rise time and eye diagram integrity on high-speed digital interfaces up to 480 Mbps. |
| 49 V clamping at 2.8 A | Provides robust overvoltage limiting while maintaining compatibility with 3.3 V and 5 V logic supply rails. |
| ±20 kV IEC 61000-4-2 rating | Meets international ESD immunity standards for handheld, peripheral, and industrial control equipment. |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Channels |
|---|---|
Use Scenario: Protecting differential USB 2.0 D+ and D− lines against ESD events during cable insertion or handling. IC Role / Device Role: Unidirectional clamp on each line referenced to ground, suppressing transients before they reach the USB transceiver. Use Value: Maintains <25 pF loading to preserve 480 Mbps eye opening while clamping surges to <49 V, preventing PHY latch-up or damage. |
Use Scenario: Safeguarding HDMI Display Data Channel (DDC) and Consumer Electronics Control (CEC) lines in TVs and set-top boxes. IC Role / Device Role: Dual-line ESD suppressor placed at HDMI connector, with K1/K2 tied to DDC_SDA/DDC_SCL or CEC lines. Use Value: Enables compliance with IEC 61000-4-2 Level 4 (±15 kV air/±8 kV contact) without degrading 100 kHz I²C timing margins. |
| Audio Line Inputs (3.5 mm Jack) | Automotive Infotainment USB Ports |
Use Scenario: Shielding analog audio inputs (L/R) on portable speakers or headphones from user-handling ESD. IC Role / Device Role: Common-anode configuration protects both left and right channels simultaneously with minimal board area. Use Value: Ultra-low leakage (<1 nA) avoids DC offset or bias shift in op-amp input stages; 25 pF prevents HF roll-off in 20 kHz bandwidth paths. |
Use Scenario: Hardening USB charging/data ports in vehicle head units against ESD from passenger interaction or environmental transients. IC Role / Device Role: Dual-line protector mounted directly at USB Type-A receptacle, with common anode grounded to chassis via short trace. Use Value: Withstands -40 °C to +105 °C ambient (derated), meets ISO 10605 ESD requirements when combined with proper PCB layout per Nexperia guidelines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUP4201MR6T1G | Higher capacitance (30 pF max), lower clamping (40 V typ. at 1 A), bidirectional-only dual-diode (no common-anode unidirectional mode). | Best suited for lower-speed lines (e.g., UART, I²C) where <30 pF is acceptable; not optimal for USB 2.0 due to higher capacitance. | Select when lower clamping voltage is prioritized over speed; verify layout supports bidirectional operation on both lines. |
| Vishay ESDE0402MUT5G | Lower standoff (3.3 V), much lower capacitance (0.3 pF), rated for 1 A IPP only; designed for RF antenna or high-frequency analog paths. | Targeted at sub-GHz RF front-ends or precision analog sensors-not general-purpose data line protection. | Choose only for ultra-high-frequency or ultra-low-capacitance needs; unsuitable for 24 V signal lines or 2.8 A surge handling. |
Compared with NUP4201MR6T1G and ESDE0402MUT5G, MMBZ33VA-TR uniquely balances 26 V standoff, 2.8 A surge capability, and ≤25 pF capacitance-making it the only option among the three qualified for robust, high-speed, dual-line protection in industrial and consumer USB/HDMI applications.
Availability
MMBZ33VA-TR is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI auxiliary channel safeguarding, and portable audio input conditioning requiring stable component supply across production volumes.
Supply support for MMBZ33VA-TR 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
Nexperia is a leading Dutch semiconductor manufacturer specializing in high-performance, reliable discrete and logic devices, with core expertise in ESD protection, MOSFETs, and bipolar transistors.
The MMBZ33VA-TR belongs to Nexperia's low-capacitance ESD protection portfolio, engineered specifically for high-speed data line immunity in space-constrained consumer, computing, and industrial electronics.
FAQ
What is the maximum operating temperature for MMBZ33VA-TR?
The MMBZ33VA-TR has a maximum junction temperature of 150 °C and operates across an ambient temperature range of -55 °C to +150 °C. Derating is required above 75 °C ambient to maintain reliability; thermal performance depends on PCB copper area and airflow per Nexperia's SOT23 thermal guidelines.
Can MMBZ33VA-TR protect bidirectional signal lines like I²C?
Yes-when configured with both cathodes (K1/K2) connected to SDA/SCL and the common anode (A) grounded, MMBZ33VA-TR provides bidirectional ESD protection for one differential pair. This leverages its inherent common-anode dual-diode structure to clamp both positive and negative transients on either line.
Is MMBZ33VA-TR compliant with RoHS and REACH?
Yes-MMBZ33VA-TR is RoHS-compliant (lead-free, homogeneous material level) and REACH-conformant per Nexperia's published declarations. The SOT23 package uses halogen-free molding compound and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) for unlimited floor life at ≤30 °C/85% RH.
How does the 26 V VRWM relate to system voltage selection?
The 26 V reverse standoff voltage sets the maximum continuous DC or peak AC voltage the diode blocks before entering breakdown. It is selected to exceed normal operating voltages (e.g., 24 V industrial buses or 18 V audio rails) while allowing sufficient margin for ripple and tolerance-ensuring no leakage or conduction during steady-state operation.
MMBZ33VA-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Power - Max:
- -
- Frequency - Transition:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MMBZ33VA-TR FAQ
1.How can I place an order for MMBZ33VA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ33VA-TR 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 MMBZ33VA-TR reliable?
The price and inventory of MMBZ33VA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ33VA-TR is usually 5 days.
3.What payment methods are accepted for MMBZ33VA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ33VA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ33VA-TR?
MMBZ33VA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ33VA-TR 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 MMBZ33VA-TR?
For technical support, including MMBZ33VA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ33VA-TR requirements.
6.How does Aetrix verify that MMBZ33VA-TR is sourced from the original manufacturer or authorized distributors?
All MMBZ33VA-TR 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 MMBZ33VA-TR meets industry standards.
7.What is the process for return or replacement of MMBZ33VA-TR?
All MMBZ33VA-TR units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ33VA-TR, 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 MMBZ33VA-TR part is unused and in its original packaging.
Return procedure for MMBZ33VA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ33VA-TR Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
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MMBT3906-7-F
Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC846BLT1G
onsemi
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
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