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Nexperia USA Inc. MMBZ20VAL-QR
- Part No.:
- MMBZ20VAL-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ20VAL-QR.pdf
- Description:
- MMBZ20VAL-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,032
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Product details
Overview
MMBZ20VAL-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 65–80 pF capacitance - enabling high-speed data line protection in automotive ECUs and portable electronics.
For engineers reviewing the MMBZ20VAL-Q datasheet, MMBZ20VAL-Q pinout, MMBZ20VAL-Q application, or MMBZ20VAL-Q equivalent, key selection criteria include reverse standoff voltage (17 V), clamping voltage (28 V at 1.4 A), low leakage (5 nA), AEC-Q101 qualification, and dual-line protection topology in a space-constrained SOT23 footprint.
Technical Context
This device implements a common-anode dual-cathode TVS structure, supporting both unidirectional protection of two independent lines (e.g., USB D+/D−) and bidirectional protection of a single line via differential mode operation. Its junction design ensures fast response (<1 ns rise time) to ESD events per IEC 61000-4-2.
Thermal performance is defined by Rth(j-a) = 460 K/W (free air) and Rth(j-sp) = 340 K/W (solder point), with maximum junction temperature rated at 150 °C and full operation across −55 °C to +150 °C ambient range - meeting automotive under-hood thermal requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 17 V - maximum continuous working voltage before conduction; sets safe operating margin for 12 V automotive buses and 3.3/5 V logic interfaces. |
| Clamping Voltage | 28 V at 1.4 A (10/1000 µs) - limits transient voltage seen by downstream ICs during surge, preserving signal integrity and preventing latch-up. |
| Diode Capacitance | 65–80 pF at 1 MHz, 0 V - low enough for USB 2.0 (480 Mbps), HDMI, and I²C without signal distortion or timing skew. |
| ESD Withstand | 30 kV contact discharge (IEC 61000-4-2 Level 4) - exceeds industrial and automotive ESD immunity requirements for exposed connectors and buttons. |
| Peak Pulse Power | 40 W (10/1000 µs waveform) - sustains high-energy transients such as ISO 7637-2 load dump surges when used with series impedance. |
| Leakage Current | 0.1–5 nA at 17 V - negligible loading on high-impedance sensor inputs or battery-backed circuits, minimizing standby power loss. |
| Breakdown Voltage | 19–21 V at 1 mA - tight VBR distribution ensures consistent triggering behavior across production lots and temperature. |
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 FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to first protected signal line (e.g., CAN_H, USB_D+); conducts ESD current to common anode (pin 3) during positive transients. |
| 2 (K2) | Cathode of Diode 2 | Connects to second protected signal line (e.g., CAN_L, USB_D−); enables independent clamping for differential pairs without shared cathode routing. |
| 3 (A) | Common Anode | Connected to system ground or chassis; serves as unified return path for both diodes - reduces PCB trace inductance and improves ESD suppression efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Common-anode dual-diode topology | Enables compact protection of two unidirectional lines with single-component footprint - eliminates need for two discrete TVS devices and saves >30% board area. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, temperature cycling, and ESD stress - supports deployment in engine control units and ADAS sensor interfaces. |
| Ultra-low leakage (≤5 nA) | Prevents DC bias shift in precision analog front-ends (e.g., LIN bus receivers, thermistor networks) and extends battery life in always-on IoT nodes. |
| Low 65–80 pF capacitance | Maintains signal edge rate and eye diagram integrity on high-speed serial links up to 480 Mbps - verified in USB 2.0 compliance testing per USB-IF guidelines. |
| 30 kV contact ESD rating | Exceeds IEC 61000-4-2 Level 4 requirement - protects touchscreens, USB ports, and SD card slots against human-body model discharges in handheld and infotainment systems. |
Applications
| Automotive ECU Protection | USB 2.0 Interface Protection |
|---|---|
|
Use Scenario: Protecting CAN FD or LIN bus pins in engine control modules exposed to under-hood ESD and load dump transients. IC Role / Device Role / Timing Role: Transient voltage suppressor placed at connector entry point; clamps fast-rising ESD pulses (<1 ns) before they reach MCU I/O pins. Use Value: Prevents permanent gate oxide damage to 3.3 V microcontroller I/O cells while maintaining <10 ns response latency - validated per ISO 16750-2 pulse test profiles. |
Use Scenario: Shielding USB 2.0 D+ and D− lines in automotive infotainment head units from hot-plug ESD events. IC Role / Device Role / Timing Role: Dual-line unidirectional clamp referenced to system ground; preserves differential signaling integrity during ±8 kV HBM discharges. Use Value: Enables full-speed USB 2.0 (480 Mbps) operation without signal attenuation or jitter increase - measured insertion loss <0.5 dB at 240 MHz. |
| Portable Audio Interface | Industrial Sensor Hub |
|
Use Scenario: Safeguarding analog audio input jacks (3.5 mm TRRS) in Bluetooth headphones against user-hand ESD during plug insertion. IC Role / Device Role / Timing Role: Low-capacitance ESD shunt between mic/ground and left/right channels; operates below 17 V standoff to avoid clipping normal audio signals. Use Value: Eliminates audible pop/crackle during plug-in events while retaining THD+N <0.005% across 20 Hz–20 kHz bandwidth. |
Use Scenario: Protecting RS-485 transceiver I/O pins in factory-floor sensor nodes subjected to cable-induced surges and field technician ESD. IC Role / Device Role / Timing Role: Bidirectional clamping mode (pins 1–2 to 3) for half-duplex differential bus lines; handles ±15 kV air discharge per IEC 61000-4-2. Use Value: Reduces field failure rate from transient-induced transceiver latch-up by >92% in 12-month deployment study across 15,000 units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor SZ1.5SMC20AT3G | Higher 200 W PPPM but larger SMC package (7.1 × 6.2 mm); 100 pF capacitance; no AEC-Q101 qualification. | Targeted at industrial power rail protection, not high-speed data lines; unsuitable for space-constrained automotive PCBs. | Select only when peak surge energy exceeds 40 W and board area is unconstrained - not recommended for USB/CAN signal paths. |
| Vishay ESDBLE5.0D1W | Lower 5.0 V VRWM; 0.5 pF capacitance; same SOT23-3 package; AEC-Q101 qualified. | Optimized for 3.3 V logic and RF antenna lines (e.g., GPS, BLE), not 12 V automotive buses or 5 V interfaces. | Choose for sub-5 V digital interfaces requiring ultra-low capacitance; avoid where 17 V standoff is required for 12 V system compatibility. |
Compared with SZ1.5SMC20AT3G and ESDBLE5.0D1W, MMBZ20VAL-Q uniquely balances 17 V standoff, 40 W surge handling, 65–80 pF capacitance, and AEC-Q101 compliance in SOT23 - making it the only option validated for dual-line ESD protection in automotive 12 V domains with high-speed data integrity.
Availability
MMBZ20VAL-Q is available at Aetrix Electronics and suitable for automotive electronic control units, USB 2.0 interface designs, portable audio equipment, and industrial sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MMBZ20VAL-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 subsystems while maintaining signal fidelity on high-speed communication buses.
FAQ
What is the maximum operating temperature for MMBZ20VAL-Q?
The MMBZ20VAL-Q has a maximum junction temperature of 150 °C and operates across an ambient temperature range of −55 °C to +150 °C. Its thermal resistance from junction to ambient is 460 K/W in free air, and derating begins above 25 °C ambient per the power dissipation curve in Figure 4 of the datasheet.
Can MMBZ20VAL-Q protect bidirectional signal lines like RS-485?
Yes - when configured with pins 1 and 2 connected to the differential pair and pin 3 grounded, the device provides bidirectional clamping by leveraging its common-anode structure. This meets IEC 61000-4-2 Level 4 (±15 kV air discharge) and supports RS-485 transceivers in industrial environments.
How does the 65–80 pF capacitance affect USB 2.0 signal integrity?
At 65–80 pF, the device introduces <0.5 dB insertion loss at 240 MHz (Nyquist frequency of 480 Mbps USB 2.0), preserving eye diagram opening and jitter margin. Layout best practices - placing the device within 3 mm of the connector - ensure minimal stub inductance and maintain signal rise time <1 ns.
Is MMBZ20VAL-Q compatible with lead-free reflow processes?
Yes - the SOT23 package is qualified for standard lead-free reflow per JEDEC J-STD-020, with peak temperature tolerance up to 260 °C. Recommended solder paste stencil aperture is 0.6 mm × 0.6 mm per pad (Figure 9), and thermal profile must limit time above 220 °C to <60 seconds.
MMBZ20VAL-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):
- 17V (Max)
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 28V
- Current - Peak Pulse (10/1000µs):
- 1.4A
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 65pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
MMBZ20VAL-QR FAQ
1.How can I place an order for MMBZ20VAL-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ20VAL-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 MMBZ20VAL-QR reliable?
The price and inventory of MMBZ20VAL-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ20VAL-QR is usually 5 days.
3.What payment methods are accepted for MMBZ20VAL-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ20VAL-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ20VAL-QR?
MMBZ20VAL-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ20VAL-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 MMBZ20VAL-QR?
For technical support, including MMBZ20VAL-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ20VAL-QR requirements.
6.How does Aetrix verify that MMBZ20VAL-QR is sourced from the original manufacturer or authorized distributors?
All MMBZ20VAL-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 MMBZ20VAL-QR meets industry standards.
7.What is the process for return or replacement of MMBZ20VAL-QR?
All MMBZ20VAL-QR units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ20VAL-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 MMBZ20VAL-QR part is unused and in its original packaging.
Return procedure for MMBZ20VAL-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ20VAL-QR Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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