My Inquiry
My Account
Nexperia USA Inc. MMBZ33VAT-QR
- Part No.:
- MMBZ33VAT-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ33VAT-QR.pdf
- Description:
- MMBZ33VAT-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,740
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMBZ33VAT-QR 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 stand-off voltage, ≤25 pF capacitance, 49 V clamping voltage at 2.8 A peak pulse current, and 20 kV IEC 61000-4-2 ESD rating - enabling high-fidelity signal integrity in automotive infotainment interfaces.
For engineers reviewing the MMBZ33VAT-QR datasheet, MMBZ33VAT-QR pinout, MMBZ33VAT-QR application, or MMBZ33VAT-QR equivalent, this device supports low-capacitance bidirectional line protection (via common-anode topology), AEC-Q101 qualification, ultra-low leakage (<1 nA), and compact SOT23 footprint for space-constrained PCB layouts.
Technical Context
This dual-cathode, single-anode ESD suppressor operates in unidirectional mode per channel but enables bidirectional protection on one line by leveraging symmetrical clamping across both diodes. Its low 20–25 pF capacitance minimizes signal distortion in high-speed data paths up to 100 MHz.
The device meets IEC 61000-4-2 (±20 kV contact/air) and IEC 61000-4-5 (2.8 A, 8/20 µs) surge standards, with thermal limits supporting junction temperatures up to 150 °C - making it suitable for under-hood automotive ECUs where ambient temperature swings exceed −40 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-off Voltage (VRWM) | 26 V - maximum continuous operating voltage before conduction begins; ensures no interference during normal signal operation. |
| Clamping Voltage (VCL) | 49 V typ. at 2.8 A - limits transient energy delivered to protected ICs, safeguarding downstream logic inputs. |
| Diode Capacitance (Cd) | 20–25 pF at 1 MHz, 0 V - preserves signal rise/fall times in USB 2.0, HDMI, and audio I²S interfaces. |
| ESD Rating | ±20 kV IEC 61000-4-2 - exceeds automotive OEM requirements for connector-level ESD immunity. |
| Leakage Current (IRM) | <1 nA at 26 V - prevents DC loading on high-impedance sensor or analog front-end circuits. |
| Peak Pulse Current (IPPM) | 2.8 A (8/20 µs waveform) - handles typical board-level surge events without degradation. |
| Breakdown Voltage (VBR) | 33 V typ. at 1 mA - defines sharp turn-on threshold for reliable transient detection and clamping. |
Pinout & Package
Package: SOT23 (TO-236AB), surface-mount plastic package measuring 2.9 mm × 1.3 mm × 1.0 mm with 1.9 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to first protected signal line; conducts transient current to common anode when voltage exceeds VRWM. |
| 2 (K2) | Cathode of Diode 2 | Connects to second protected signal line; enables independent clamping for differential or dual-single-ended paths. |
| 3 (A) | Common Anode | Connected to system ground or low-impedance return path; serves as shared reference for both ESD channels. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional dual-line protection | Enables discrete ESD suppression on two separate signal traces without cross-talk or shared impedance coupling. |
| Bidirectional single-line protection | Configures both diodes back-to-back across one line and ground, delivering ±20 kV symmetric clamping capability. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD stress - supports PPAP documentation. |
| Ultra-low leakage current | <1 nA at rated VRWM ensures minimal power loss and avoids false triggering in battery-powered portable electronics. |
| Compact SOT23 footprint | Reduces PCB real estate by >40% vs. SO-8 alternatives while maintaining thermal performance via copper pad thermal relief. |
Applications
| Automotive Infotainment Interfaces | USB 2.0 Data Lines |
|---|---|
|
Use Scenario: Protecting LVDS video links and touch controller I²C buses in head-unit displays exposed to ESD during user interaction. IC Role / Device Role / Timing Role: ESD transient suppressor placed within 3 mm of connector entry point to limit voltage overshoot below 50 V. Use Value: Prevents latch-up or gate oxide damage in display driver ICs rated for 3.3 V I/O, preserving functional safety compliance. |
Use Scenario: Safeguarding D+ and D− lines in automotive USB charging ports subjected to repeated hot-plug and static discharge. IC Role / Device Role / Timing Role: Dual-channel clamp ensuring <25 pF total capacitance to maintain USB 2.0 eye diagram integrity at 480 Mbps. Use Value: Eliminates signal jitter and bit errors caused by parasitic capacitance while meeting ISO 10605 ESD test requirements. |
| Automotive Radar Sensor Front-Ends | Industrial CAN FD Transceiver Protection |
|
Use Scenario: Shielding 77 GHz radar module RF feedthroughs and bias control lines from ESD during assembly and field service. IC Role / Device Role / Timing Role: Low-capacitance shunt element placed directly at SMA connector ground plane interface. Use Value: Maintains RF insertion loss <0.3 dB up to 10 GHz while clamping transients to safe levels for GaAs MMICs. |
Use Scenario: Adding secondary ESD hardening to CAN FD physical layer transceivers in engine control modules. IC Role / Device Role / Timing Role: Pre-transceiver protection stage that absorbs fast-rising ESD pulses before they reach the PHY's internal clamp network. Use Value: Extends transceiver lifetime under repeated 15 kV contact discharge events without degrading bus timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5V3U2M-2/TR | Lower VRWM (5.3 V), higher capacitance (35 pF), same SOT23-3L package | Targeted for 5 V logic rails only; unsuitable for 26 V signal lines like LIN or sensor analog outputs | Select only for sub-6 V digital interfaces where tighter clamping voltage is prioritized over voltage range. |
| TPD2E001DRYR | Higher VRWM (5.5 V), lower capacitance (12 pF), dual-channel unidirectional, same pinout | Designed for USB/DisplayPort; lacks AEC-Q101 qualification and 20 kV air discharge rating | Prefer for consumer-grade high-speed serial links where automotive qualification is not required. |
Compared with ESD5V3U2M-2/TR and TPD2E001DRYR, the MMBZ33VAT-QR uniquely supports 26 V signal lines, achieves 20 kV ESD robustness, and carries AEC-Q101 certification - making it the sole choice for automotive analog sensor and LIN bus protection where voltage range and qualification are non-negotiable.
Availability
MMBZ33VAT-QR is available at Aetrix Electronics and suitable for automotive electronic control units, USB 2.0 interface protection, and industrial sensor signal conditioning requiring stable component supply and long-term lifecycle assurance.
Supply support for MMBZ33VAT-QR 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.
The MMBZ33VAT-QR belongs to Nexperia's Automotive-qualified ESD Protection portfolio, engineered specifically for robust, low-capacitance transient suppression in harsh-environment vehicle subsystems such as ADAS sensors and infotainment gateways.
FAQ
What is the maximum operating temperature for MMBZ33VAT-QR?
The MMBZ33VAT-QR supports a junction temperature range up to 150 °C and ambient operating temperatures from −55 °C to +150 °C. Its thermal design allows direct placement near heat-generating components in engine bay ECUs, provided PCB copper area meets Nexperia's recommended thermal pad layout for SOT23 packages.
Can MMBZ33VAT-QR protect bidirectional communication lines like I²C?
Yes - by connecting K1 and K2 to SDA and SCL respectively and tying the common anode (Pin 3) to ground, the device provides symmetrical clamping for both rising and falling transients. Its ≤25 pF capacitance avoids signal integrity issues at standard-mode (100 kHz) and fast-mode (400 kHz) I²C speeds.
Is MMBZ33VAT-QR compatible with lead-free reflow soldering processes?
Yes - the device is qualified for standard Pb-free reflow profiles per J-STD-020, with peak temperatures up to 260 °C. The SOT23 package uses matte tin plating and passes MSL Level 1 moisture sensitivity testing, eliminating pre-bake requirements for most production environments.
How does MMBZ33VAT-QR differ from single-diode ESD protectors like PESD5V0S1BA?
Unlike single-diode protectors, MMBZ33VAT-QR integrates two cathodes sharing one anode, enabling either dual-line unidirectional protection or single-line bidirectional clamping. This reduces component count and PCB area versus using two discrete diodes, while maintaining matched electrical characteristics across channels.
MMBZ33VAT-QR 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):
- 31.3V
- Voltage - Clamping (Max) @ Ipp:
- 49V (Typ)
- Current - Peak Pulse (10/1000µs):
- 2.8A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 20pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
MMBZ33VAT-QR FAQ
1.How can I place an order for MMBZ33VAT-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ33VAT-QR 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 MMBZ33VAT-QR reliable?
The price and inventory of MMBZ33VAT-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ33VAT-QR is usually 5 days.
3.What payment methods are accepted for MMBZ33VAT-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ33VAT-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ33VAT-QR?
MMBZ33VAT-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ33VAT-QR 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 MMBZ33VAT-QR?
For technical support, including MMBZ33VAT-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ33VAT-QR requirements.
6.How does Aetrix verify that MMBZ33VAT-QR is sourced from the original manufacturer or authorized distributors?
All MMBZ33VAT-QR 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 MMBZ33VAT-QR meets industry standards.
7.What is the process for return or replacement of MMBZ33VAT-QR?
All MMBZ33VAT-QR units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ33VAT-QR, 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 MMBZ33VAT-QR part is unused and in its original packaging.
Return procedure for MMBZ33VAT-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ33VAT-QR 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
