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Nexperia USA Inc. MMBZ27VAL-QR
- Part No.:
- MMBZ27VAL-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ27VAL-QR.pdf
- Description:
- MMBZ27VAL-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,544
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Product details
Overview
MMBZ27VAL-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 ≤60 pF capacitance - enabling high-speed data line protection in automotive ECUs and portable electronics.
For engineers reviewing the MMBZ27VAL-Q datasheet, MMBZ27VAL-Q pinout, MMBZ27VAL-Q application, or MMBZ27VAL-Q equivalent, key selection criteria include reverse standoff voltage (22 V), clamping voltage (40 V at 1 A), ultra-low leakage (5 nA), and AEC-Q101 qualification for automotive reliability.
Technical Context
This dual-cathode, single-anode TVS diode operates in unidirectional mode across two independent channels - each with 27 V nominal breakdown (25.65–28.35 V) and 40 V clamping under 1 A 10/1000 µs surge. Its common-anode topology allows shared ground return while maintaining channel isolation.
Thermal resistance is 460 K/W junction-to-ambient (free air), and it sustains operation from −55 °C to +150 °C ambient. The device meets IEC 61643-321 for surge robustness and IEC 61000-4-2 for ESD, with validated performance up to 30 kV contact discharge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 22 V - maximum continuous operating voltage before conduction begins on either channel |
| Breakdown Voltage | 27 V (typical), 25.65–28.35 V - precise threshold where avalanche conduction initiates under 1 mA test current |
| Clamping Voltage | 40 V at 1 A - limits transient voltage seen by protected ICs during IEC 61643-321 10/1000 µs surges |
| Diode Capacitance | 48–60 pF at 1 MHz, 0 V bias - low enough for USB 2.0, HDMI, and automotive CAN/FlexRay signal integrity |
| Peak Pulse Power | 40 W - energy-handling capability for short-duration transients per channel (pin 1→3 or pin 2→3) |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2 Level 4) - exceeds automotive and industrial immunity requirements |
| Leakage Current | 0.1–5 nA at 22 V - negligible loading on high-impedance sensor or audio 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 assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Protected signal line 1 anode connection point; conducts when line voltage exceeds 22 V above common anode |
| 2 | Cathode (Diode 2) | Protected signal line 2 anode connection point; electrically isolated from Pin 1 but shares Pin 3 return path |
| 3 | Common Anode | Shared ground reference for both protection channels; must be connected to system ground with minimal inductance |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional dual-line protection | Enables independent ESD suppression on two separate data lines (e.g., CAN_H/CAN_L or USB_DP/DM) using one footprint |
| Bidirectional single-line protection | Configurable as bidirectional TVS by grounding both cathodes - supports legacy analog or AC-coupled interfaces |
| AEC-Q101 qualified | Validated for automotive under stress conditions including temperature cycling, HTRB, and ESD - suitable for ECU front-end protection |
| Low 48–60 pF capacitance | Maintains signal rise time integrity for >100 Mbps digital interfaces without added jitter or reflection |
| 40 W peak pulse rating | Withstands repetitive 1 A, 10/1000 µs transients without degradation - critical for infotainment and ADAS sensor inputs |
Applications
| Automotive ECUs | USB 2.0 Interfaces |
|---|---|
|
Use Scenario: Protecting LIN bus or sensor input lines in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Transient voltage suppressor placed at connector entry point, clamping fast-rising ESD events before reaching MCU GPIO or analog front-end. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V microcontrollers while maintaining <1 ns response time and <40 V clamping. |
Use Scenario: ESD protection for USB 2.0 D+ and D− lines in portable media players and docking stations. IC Role / Device Role / Timing Role: Dual-channel unidirectional clamp referenced to system ground, preserving DC bias and differential signaling integrity. Use Value: 48–60 pF capacitance avoids signal distortion at 480 Mbps; 30 kV contact ESD rating exceeds USB-IF compliance thresholds. |
| Audio Line Inputs | Industrial Sensor Interfaces |
|
Use Scenario: Shielding analog audio inputs (e.g., microphone or line-in) in automotive head units from handling ESD. IC Role / Device Role / Timing Role: Low-leakage (≤5 nA) TVS diode placed before op-amp input stage to avoid DC offset shift or noise injection. Use Value: Enables direct coupling without series resistors; maintains SNR >95 dB and THD+N <0.01% across 20 Hz–20 kHz bandwidth. |
Use Scenario: Protecting 4–20 mA current-loop sensor inputs in PLC I/O modules subjected to field wiring transients. IC Role / Device Role / Timing Role: Common-anode configuration allows shared ground return for multiple loop inputs, reducing component count and board area. Use Value: 40 W pulse rating handles 100 V/1 A surges per IEC 61000-4-4; AEC-Q101 qualification ensures long-term stability in harsh environments. |
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 SZMMBZ27VALT1G | Same 27 V breakdown, identical SOT23-3 package, but rated for 25 kV contact ESD (IEC 61000-4-2 Level 3) vs. 30 kV | Lacks AEC-Q101 qualification; not recommended for automotive production | Acceptable for consumer-grade USB or audio where full automotive qualification is unnecessary |
| Vishay SMAJ24A | Single-channel, higher 24 V standoff, 400 W peak power, SMA package - larger footprint and higher capacitance (150 pF) | Not pin-compatible; requires redesign for dual-line protection; better suited for power rail vs. signal line protection | Use only when higher surge energy handling is required and board space permits larger package |
Compared with SZMMBZ27VALT1G and SMAJ24A, MMBZ27VAL-Q uniquely combines dual-line unidirectional protection, 30 kV ESD rating, AEC-Q101 qualification, and sub-60 pF capacitance in SOT23 - making it optimal for space-constrained, high-reliability signal-line applications.
Availability
MMBZ27VAL-Q is available at Aetrix Electronics and suitable for automotive electronic control units, USB 2.0 interface designs, and industrial sensor signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for MMBZ27VAL-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.
MMBZ27VAL-Q belongs to Nexperia's Automotive-Qualified ESD Protection Diode product line, engineered specifically for robust, low-capacitance transient suppression in safety-critical vehicle subsystems and high-speed data interfaces.
FAQ
What is the maximum operating temperature for MMBZ27VAL-Q?
The MMBZ27VAL-Q supports continuous operation from −55 °C to +150 °C ambient temperature, with a maximum junction temperature of 150 °C. Its thermal resistance is 460 K/W junction-to-ambient in free air, and derating applies above 25 °C ambient per the datasheet's thermal curves.
Can MMBZ27VAL-Q protect bidirectional signal lines like RS-485?
Yes - by connecting both cathodes (Pins 1 and 2) to the protected differential pair and the common anode (Pin 3) to ground, MMBZ27VAL-Q functions as a bidirectional TVS for one balanced line. This configuration leverages its symmetrical breakdown and clamping characteristics in both polarities.
How does the common-anode configuration affect PCB layout?
The common-anode design requires a low-inductance ground connection at Pin 3, placed as close as possible to the protected connector. Signal traces to Pins 1 and 2 must be equally length-matched and routed away from noisy power planes to preserve ESD suppression effectiveness and minimize crosstalk.
Is MMBZ27VAL-Q compatible with lead-free reflow soldering?
Yes - MMBZ27VAL-Q is qualified for lead-free reflow per JEDEC J-STD-020, with a maximum peak temperature of 260 °C. The recommended reflow profile uses a 60-second dwell above 217 °C, matching standard SnAgCu paste specifications and SOT23 thermal mass requirements.
MMBZ27VAL-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):
- 22V (Max)
- Voltage - Breakdown (Min):
- 25.65V
- Voltage - Clamping (Max) @ Ipp:
- 40V
- Current - Peak Pulse (10/1000µs):
- 1A
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 48pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
MMBZ27VAL-QR FAQ
1.How can I place an order for MMBZ27VAL-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ27VAL-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 MMBZ27VAL-QR reliable?
The price and inventory of MMBZ27VAL-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ27VAL-QR is usually 5 days.
3.What payment methods are accepted for MMBZ27VAL-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ27VAL-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ27VAL-QR?
MMBZ27VAL-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ27VAL-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 MMBZ27VAL-QR?
For technical support, including MMBZ27VAL-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ27VAL-QR requirements.
6.How does Aetrix verify that MMBZ27VAL-QR is sourced from the original manufacturer or authorized distributors?
All MMBZ27VAL-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 MMBZ27VAL-QR meets industry standards.
7.What is the process for return or replacement of MMBZ27VAL-QR?
All MMBZ27VAL-QR units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ27VAL-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 MMBZ27VAL-QR part is unused and in its original packaging.
Return procedure for MMBZ27VAL-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ27VAL-QR Tags
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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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