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Nexperia USA Inc. MMBZ27VCT-QR
- Part No.:
- MMBZ27VCT-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ27VCT-QR.pdf
- Description:
- MMBZ27VCT-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,174
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Product details
Overview
MMBZ27VCT-Q from Nexperia is a unidirectional double ESD protection diode in common-cathode SOT23 configuration, designed for transient overvoltage protection of two signal lines. It delivers VRWM = 22 V, VCL = 40 V (typ. at IPP = 3.2 A), Cd ≤ 22 pF, IRM < 1 nA, and IEC 61000-4-2 ±30 kV contact discharge rating - deployed in automotive ECUs and high-speed data interfaces.
For engineers reviewing the MMBZ27VCT-Q datasheet, MMBZ27VCT-Q pinout, MMBZ27VCT-Q application, or MMBZ27VCT-Q equivalent, key selection criteria include clamping voltage under 8/20 µs surge, low capacitance for USB/MIPI signal integrity, AEC-Q101 qualification, and common-cathode dual-anode topology for bidirectional line protection.
Technical Context
This device implements a dual-anode, single-common-cathode structure enabling either unidirectional protection of two independent lines or bidirectional protection of one line referenced to ground. Its silicon design targets fast response to ESD events (tr < 1 ns) while maintaining sub-1 nA leakage at 22 V reverse bias.
The diode's clamping behavior follows standard unidirectional TVS characteristics with VBR = 27 V (typ.) and dynamic resistance optimized for 3.2 A peak pulse current per line. Thermal limits are defined by Tj ≤ 150 °C and Tamb from –55 °C to +150 °C, supporting under-hood automotive deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 22 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe signal swing range for protected lines. |
| VBR | 27 V (typ.) - Breakdown voltage at 1 mA; ensures reliable turn-on during transients without premature conduction during normal operation. |
| VCL | 40 V (typ. at IPP = 3.2 A, 8/20 µs) - Clamped voltage seen by downstream circuitry; limits stress on IC I/O pins during surge events. |
| Cd | 22 pF (typ. at 1 MHz, 0 V) - Low junction capacitance preserves signal integrity on high-speed interfaces like USB 2.0 or HDMI DDC lines. |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact) - Withstands worst-case human-body-model ESD events without degradation or failure. |
| IRM | <1 nA at VR = 22 V - Ultra-low leakage avoids DC loading on sensitive analog or reference lines. |
| Package | SOT23 (TO-236AB) - 3-terminal surface-mount package with 1.9 mm pitch; footprint compatible with automated PCB assembly. |
Pinout & Package
SOT23 plastic surface-mount package (TO-236AB), 2.9 mm × 1.3 mm × 1.0 mm body, 3-terminal layout with 1.9 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (Diode 1) | Input node for first protected signal line; conducts transient current to common cathode during positive overvoltage events. |
| 2 | Anode (Diode 2) | Input node for second protected signal line; enables independent ESD suppression on parallel data paths (e.g., D+ and D−). |
| 3 | Common Cathode | Shared return path to system ground; simplifies PCB routing and ensures matched clamping behavior across both diodes. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional dual-line protection | Enables simultaneous safeguarding of two separate signal paths (e.g., CAN_H/CAN_L or MIPI_DSI_P/N) with single-component placement. |
| Bidirectional single-line protection | Configurable as a symmetrical clamp for AC-coupled or floating lines by grounding the common cathode and using both anodes as differential inputs. |
| AEC-Q101 qualified | Validated for automotive applications including engine control, infotainment, and ADAS sensors with full temperature and lifetime stress testing. |
| Low 22 pF capacitance | Minimizes signal distortion and insertion loss on 480 Mbps USB 2.0 or 1.5 Gbps LVDS links without requiring layout compensation. |
| Sub-1 nA leakage | Prevents DC offset drift in precision analog front-ends (e.g., sensor bias networks or ADC reference dividers) across extended temperature ranges. |
Applications
| Automotive ECU Protection | USB 2.0 Interface Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN signal lines in engine control units exposed to load dump and ESD in harsh under-hood environments. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at connector entry point to shunt ESD and surge energy to chassis ground before reaching MCU GPIOs. Use Value: Maintains signal fidelity up to 250 kbps while surviving ±30 kV contact discharge and 3.2 A 8/20 µs surges per line without latch-up or parametric shift. |
Use Scenario: Safeguarding D+ and D− pins of USB 2.0 host controllers in automotive infotainment head units. IC Role / Device Role / Timing Role: Dual-anode ESD clamp ensuring <22 pF total capacitance across differential pair to preserve eye diagram integrity at 480 Mbps. Use Value: Prevents bit errors and hot-plug failures by limiting clamped voltage to 40 V during ESD events, well below USB PHY absolute maximum ratings. |
| MIPI DSI Display Interface | Industrial Sensor Signal Conditioning |
|
Use Scenario: Shielding high-speed MIPI DSI clock and data lanes between application processor and display module in automotive instrument clusters. IC Role / Device Role / Timing Role: Common-cathode dual-diode array placed adjacent to display connector to minimize inductance in transient return path. Use Value: Enables >1 Gbps data rates with <0.5 dB insertion loss at 1 GHz due to ultra-low 22 pF capacitance and matched trace routing capability. |
Use Scenario: Protecting analog output lines of pressure or temperature sensors in industrial PLC modules subjected to field wiring ESD. IC Role / Device Role / Timing Role: Low-leakage (≤1 nA) ESD clamp preserving microvolt-level signal accuracy in 24-bit sigma-delta ADC front-ends. Use Value: Eliminates baseline drift and calibration drift caused by diode leakage current in ratiometric sensor bridges over –40 °C to +125 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5V3U2U-2/TR | Lower VRWM (5.3 V), higher Cd (100 pF), same SOT23-3L package and AEC-Q101 grade. | Targeted at 5 V logic rails (e.g., UART, I²C); unsuitable for 22 V signal lines due to premature conduction. | Select only when protecting low-voltage digital buses where clamping voltage must be <6 V. |
| TPD2E001DRYR | Higher VRWM (12 V), lower VCL (18 V typ.), dual-channel unidirectional, but not AEC-Q101 qualified. | Used in consumer-grade portable electronics; lacks automotive reliability validation and thermal derating data. | Prefer for cost-sensitive non-automotive designs where AEC-Q101 compliance is not required. |
Compared with ESD5V3U2U-2/TR and TPD2E001DRYR, MMBZ27VCT-Q uniquely supports 22 V signal rails with automotive-grade reliability and 22 pF capacitance - making it the only option for robust ESD protection in 12–24 V automotive data interfaces.
Availability
MMBZ27VCT-Q is available at Aetrix Electronics and suitable for automotive electronic control units, USB 2.0 interface protection, and MIPI DSI display interfaces requiring stable component supply and long-term lifecycle assurance.
Supply support for MMBZ27VCT-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.
MMBZ27VCT-Q belongs to Nexperia's Automotive ESD Protection Diode product line, engineered specifically for robust transient suppression in 12 V/24 V vehicle networks while meeting stringent AEC-Q101 requirements.
FAQ
What is the maximum peak pulse current this diode can handle?
The MMBZ27VCT-Q is rated for 3.2 A peak pulse current (IPPM) under IEC 61000-4-5 8/20 µs waveform conditions. This value is validated per absolute maximum ratings and confirmed in both quick reference and limiting values tables of the official datasheet. It applies per diode channel in the dual configuration.
Can this device protect bidirectional signals like RS-485 or CAN bus?
Yes - when configured with the common cathode grounded and both anodes connected to differential signal lines (e.g., CAN_H and CAN_L), the MMBZ27VCT-Q provides symmetrical bidirectional clamping. Its 22 V VRWM aligns with standard 12 V automotive bus operating ranges, and its ±30 kV ESD rating meets ISO 10605 requirements.
Is the 22 pF capacitance specified at zero bias or operating voltage?
The typical diode capacitance of 22 pF is measured at 1 MHz with 0 V reverse bias and ambient temperature of 25 °C, as stated in Table 4 (Characteristics). Capacitance decreases slightly with increasing reverse voltage - e.g., ~13 pF at VR = 15 V - enabling predictable high-frequency performance across its operating range.
Does the AEC-Q101 qualification cover temperature cycling and humidity testing?
Yes - AEC-Q101 qualification for MMBZ27VCT-Q includes full stress test sequences: temperature cycling (–55 °C to +150 °C, 1000 cycles), high-temperature operating life (1000 h at 150 °C), unbiased HAST (96 h at 130 °C/85% RH), and mechanical shock/vibration. All results are documented in Nexperia's certified test reports.
MMBZ27VCT-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 (Typ)
- Current - Peak Pulse (10/1000µs):
- 3.2A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 22pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
MMBZ27VCT-QR FAQ
1.How can I place an order for MMBZ27VCT-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ27VCT-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 MMBZ27VCT-QR reliable?
The price and inventory of MMBZ27VCT-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ27VCT-QR is usually 5 days.
3.What payment methods are accepted for MMBZ27VCT-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ27VCT-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ27VCT-QR?
MMBZ27VCT-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ27VCT-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 MMBZ27VCT-QR?
For technical support, including MMBZ27VCT-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ27VCT-QR requirements.
6.How does Aetrix verify that MMBZ27VCT-QR is sourced from the original manufacturer or authorized distributors?
All MMBZ27VCT-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 MMBZ27VCT-QR meets industry standards.
7.What is the process for return or replacement of MMBZ27VCT-QR?
All MMBZ27VCT-QR units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ27VCT-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 MMBZ27VCT-QR part is unused and in its original packaging.
Return procedure for MMBZ27VCT-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ27VCT-QR Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
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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