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Nexperia USA Inc. MMBZ33VAL-QVL
- Part No.:
- MMBZ33VAL-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ33VAL-QVL.pdf
- Description:
- MMBZ33VAL-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,173
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Product details
Overview
MMBZ33VAL-Q 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 30 kV contact ESD immunity (IEC 61000-4-2 Level 4), 40 W peak pulse power, and ultra-low 45–55 pF capacitance - enabling high-speed data line protection in automotive ECUs and portable electronics.
For engineers reviewing the MMBZ33VAL-Q datasheet, MMBZ33VAL-Q pinout, MMBZ33VAL-Q application, or MMBZ33VAL-Q equivalent, key selection criteria include reverse standoff voltage (26 V), clamping voltage (46 V at 0.87 A), low leakage (≤5 nA), AEC-Q101 qualification, and dual-line protection topology in a 3-pin SOT23 package.
Technical Context
This device implements a common-anode dual-diode architecture where Pins 1 and 2 serve as independent cathodes and Pin 3 is the shared anode - enabling either unidirectional protection of two separate lines (e.g., USB D+/D−) or bidirectional protection of a single line (e.g., audio jack). Its IEC 61643-321-compliant 10/1000 µs surge response ensures robust transient suppression without signal distortion.
The diode's 33 V nominal breakdown voltage (VBR = 31.35–34.65 V) and 26 V reverse standoff rating (VRWM) define its operating window for DC-biased signal lines, while thermal resistance Rth(j-a) = 460 K/W reflects its free-air dissipation capability in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 26 V - maximum continuous DC voltage the diode blocks before entering avalanche conduction |
| Breakdown Voltage | 33 V (typical), 31.35–34.65 V - precise threshold at which clamping begins under 1 mA test current |
| Clamping Voltage | 46 V at 0.87 A - peak voltage seen by protected circuit during IEC 61643-321 10/1000 µs surge |
| Diode Capacitance | 45–55 pF at 1 MHz, 0 V bias - low enough to avoid signal integrity degradation on USB 2.0 or HDMI lines |
| Peak Pulse Power | 40 W - energy-handling capacity for transient suppression per diode element |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2 Level 4) - meets automotive and industrial ESD immunity requirements |
| Leakage Current | ≤5 nA at 26 V - negligible loading on high-impedance sensor or analog signal paths |
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 placement and reflow soldering on dense PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Connects to first signal line requiring unidirectional ESD protection; forward-biased during positive transients |
| 2 | Cathode (Diode 2) | Connects to second signal line; enables independent protection of dual lines sharing one ground return path |
| 3 | Common Anode | Connected to system ground; establishes reference for both diodes' clamping action |
Key Features
| Feature | Design Value |
|---|---|
| Common-anode dual-diode topology | Enables simultaneous protection of two unidirectional lines or one bidirectional line without external components |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HBM ESD, and high-temperature operating life |
| Ultra-low capacitance (45–55 pF) | Preserves signal rise/fall times on high-speed interfaces up to 480 Mbps (USB 2.0 full-speed) |
| 40 W peak pulse power rating | Handles repetitive surges per IEC 61643-321 without parameter shift or thermal runaway |
| 0.1–5 nA reverse leakage | Minimizes quiescent current draw in battery-powered portable devices with always-on sensors |
Applications
| Automotive ECUs | USB 2.0 Data Lines |
|---|---|
|
Use Scenario: Protecting CAN FD or LIN bus signal pairs in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Transient voltage suppressor placed at connector interface to clamp fast-rising ESD and switching noise before reaching MCU GPIOs. Use Value: Prevents latch-up and gate oxide damage in 3.3 V/5 V microcontrollers while maintaining <1 ns response time and <46 V clamping. |
Use Scenario: Shielding D+ and D− lines of automotive infotainment USB ports from human-body-model ESD events. IC Role / Device Role / Timing Role: Dual-cathode ESD clamp referenced to chassis ground, installed within 3 mm of USB receptacle. Use Value: Maintains USB 2.0 eye diagram integrity with ≤55 pF loading and passes IEC 61000-4-2 ±30 kV contact discharge testing. |
| Portable Audio Jacks | Industrial Sensor Interfaces |
|
Use Scenario: Safeguarding 3.5 mm TRRS headset jacks in smartphones against repeated plug-in/out ESD events. IC Role / Device Role / Timing Role: Bidirectional protection element across left/right audio channels using common-anode configuration. Use Value: Eliminates audible pop/crackle during insertion by clamping transients below amplifier input damage thresholds. |
Use Scenario: Protecting 4–20 mA current-loop sensor inputs in programmable logic controllers from field wiring surges. IC Role / Device Role / Timing Role: Low-leakage (≤5 nA) standoff diode that avoids disturbing loop calibration while absorbing 0.87 A transients. Use Value: Ensures measurement accuracy remains within ±0.1% full scale during IEC 61000-4-4 EFT bursts without recalibration. |
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 (110 pF), lower VRWM (24 V), same SOT23-3 package and common-anode topology | Less suitable for >100 Mbps interfaces; better for cost-sensitive industrial controls with relaxed speed requirements | Select when budget constraints outweigh high-speed signal integrity needs and 24 V standoff suffices |
| Vishay VEML3020X01 | Lower ESD rating (±15 kV air, ±8 kV contact), higher leakage (100 nA), but rated for 125 °C ambient operation | Preferred for under-hood automotive modules exceeding 105 °C junction temperature limits | Choose for extended-temperature environments where MMBZ33VAL-Q's 150 °C Tj limit may be insufficient due to board-level heating |
Compared with NUP4201MR6T1G and VEML3020X01, MMBZ33VAL-Q uniquely balances 30 kV ESD immunity, 45–55 pF capacitance, and AEC-Q101 qualification - making it optimal for high-reliability, high-speed automotive and portable data line protection where both performance and compliance are non-negotiable.
Availability
MMBZ33VAL-Q is available at Aetrix Electronics and suitable for automotive electronic control units, USB 2.0 peripheral interfaces, and portable audio subsystems requiring stable component supply across production lifecycles.
Supply support for MMBZ33VAL-Q 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 global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in ESD protection, MOSFETs, and bipolar transistors.
This device belongs to Nexperia's Automotive-Qualified ESD Protection Diode product line, engineered specifically for robust transient suppression in safety-critical vehicle networks and consumer electronics with stringent EMC requirements.
FAQ
What is the maximum recommended PCB trace length between MMBZ33VAL-Q and the protected signal line?
Per Nexperia application guidance, the trace length from the diode cathode to the protected line must not exceed 3 mm, and the ground path from the common anode to the system ground plane must be direct and low-inductance - ideally via multiple vias within 2 mm of the anode pad - to maintain sub-nanosecond response and prevent impedance mismatch during ESD events.
Can MMBZ33VAL-Q protect bidirectional communication lines like RS-485?
No - MMBZ33VAL-Q is unidirectional only and unsuitable for true bidirectional differential buses. Its common-anode configuration allows bidirectional clamping *only* on a single-ended line referenced to ground (e.g., audio jack sleeve), not on balanced differential pairs. For RS-485, use a dedicated bidirectional TVS array such as PESD5V0S1BA.
Does the 30 kV ESD rating apply to both pins 1 and 2 simultaneously?
Yes - the 30 kV contact discharge rating (IEC 61000-4-2) is verified independently on Pin 1-to-Pin 3 and Pin 2-to-Pin 3, with ten non-repetitive pulses applied to each cathode relative to the common anode, confirming full protection capability for both protected lines under automotive-grade stress conditions.
How does thermal resistance affect derating of peak pulse power at elevated ambient temperatures?
At 85 °C ambient, the device's rated peak pulse power drops to ~65% of its 25 °C value (≈26 W) due to junction temperature rise - calculated using Rth(j-a) = 460 K/W and the 150 °C max Tj. Derating curves in Figure 4 confirm linear reduction above 25 °C, requiring layout optimization (e.g., thermal vias) for sustained surge duty cycles in hot environments.
MMBZ33VAL-QVL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 26V (Max)
- Voltage - Breakdown (Min):
- 31.35V
- Voltage - Clamping (Max) @ Ipp:
- 46V
- Current - Peak Pulse (10/1000µs):
- 870mA
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 45pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
MMBZ33VAL-QVL FAQ
1.How can I place an order for MMBZ33VAL-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ33VAL-QVL 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 MMBZ33VAL-QVL reliable?
The price and inventory of MMBZ33VAL-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ33VAL-QVL is usually 5 days.
3.What payment methods are accepted for MMBZ33VAL-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ33VAL-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ33VAL-QVL?
MMBZ33VAL-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ33VAL-QVL 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 MMBZ33VAL-QVL?
For technical support, including MMBZ33VAL-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ33VAL-QVL requirements.
6.How does Aetrix verify that MMBZ33VAL-QVL is sourced from the original manufacturer or authorized distributors?
All MMBZ33VAL-QVL 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 MMBZ33VAL-QVL meets industry standards.
7.What is the process for return or replacement of MMBZ33VAL-QVL?
All MMBZ33VAL-QVL units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ33VAL-QVL, 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 MMBZ33VAL-QVL part is unused and in its original packaging.
Return procedure for MMBZ33VAL-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ33VAL-QVL 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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