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Nexperia USA Inc. MMBZ27VAT-QR
- Part No.:
- MMBZ27VAT-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ27VAT-QR.pdf
- Description:
- MMBZ27VAT-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,818
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Product details
Overview
MMBZ27VAT-Q from Nexperia is a dual-channel unidirectional TVS diode in SOT23 package, designed for ESD and surge protection of two independent supply or interface lines in automotive systems. It features 22 V reverse standoff voltage (VRWM), 55 V max clamping voltage at 4.2 A peak pulse current, and 30 kV IEC 61000-4-2 ESD rating - enabling robust transient suppression in CAN, LIN, and sensor supply rails.
For engineers reviewing the MMBZ27VAT-Q datasheet, MMBZ27VAT-Q pinout, MMBZ27VAT-Q application, or MMBZ27VAT-Q equivalent, this device delivers verified AEC-Q101 qualification, ultra-low leakage (<1 nA), and low capacitance (22–30 pF) critical for high-speed signal integrity and automotive-grade reliability.
Technical Context
This dual-cathode, common-anode TVS array implements two independent unidirectional clamping paths between pins 1–3 and 2–3. Its 27 V nominal breakdown voltage (VBR = 25.65–28.35 V at 1 mA) ensures precise overvoltage triggering while maintaining safe margin below system rail voltages.
Clamping performance is validated under both IEC 61000-4-5 (8/20 µs, 4.2 A) and IEC 61643-321 (10/1000 µs, 0.61 A) waveforms, with dynamic resistance optimized to limit voltage overshoot during fast transients - essential for protecting downstream 24 V automotive controllers and analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 22 V - Maximum continuous reverse operating voltage before conduction; sets upper limit for protected line DC bias. |
| VBR (1 mA) | 25.65–28.35 V - Breakdown threshold ensuring reliable turn-on before damage to 24 V-rated ICs. |
| VCL (4.2 A) | 46–55 V - Clamped voltage during 8/20 µs surge; limits stress on downstream components during ISO 7637-2 pulses. |
| IPP (8/20 µs) | 4.2 A - Peak pulse current handling capacity matching automotive load-dump and coupling transient severity. |
| Capacitance | 22–30 pF at 0 V - Low enough to avoid signal distortion on 1–5 Mbps CAN/LIN buses without added filtering. |
| ESD Rating | ±30 kV contact discharge - Meets IEC 61000-4-2 Level 4 for direct human interaction points in infotainment and body control modules. |
| Leakage (22 V) | <1 nA typical - Negligible power loss in always-on 12/24 V supply monitoring circuits. |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm, 1.9 mm lead pitch), qualified per AEC-Q101 for automotive underhood and cabin environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Connects to first protected line (e.g., CAN_H); conducts transient energy to common anode when voltage exceeds VRWM. |
| 2 | Cathode (Diode 2) | Connects to second protected line (e.g., CAN_L or sensor VCC); enables dual-line protection with single-component footprint. |
| 3 | Common Anode | Typically tied to chassis or system ground; serves as shared return path for both clamping diodes during surge events. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-line unidirectional protection | Single SOT23 device replaces two discrete TVS diodes - reduces PCB area by >40% and eliminates layout mismatch risk. |
| AEC-Q101 qualification | Validated for temperature cycling (-55 °C to +150 °C), HTRB, and ESD stress - meets automotive production requirements without additional qualification. |
| Low clamping voltage (46 V typ) | Ensures protected ICs (e.g., TJA1042, MC33664) remain within absolute maximum ratings during 100 V/50 A ISO 7637-2 Pulse 5a events. |
| Sub-1 nA leakage at VRWM | Prevents measurable current draw in battery-backed domains (e.g., real-time clock backup rails) over 10+ year vehicle lifetime. |
| 22–30 pF capacitance | Maintains <1% signal rise-time degradation on 500 ns CAN edges - avoids need for series termination or bandwidth-limiting filters. |
Applications
| Automotive CAN Bus Protection | Body Control Module Power Rails |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L differential pair against ESD from connector handling and coupled transients in door modules. IC Role / Device Role / Timing Role: Unidirectional clamping element placed directly at OBD-II or module connector, shunting surges to chassis ground before reaching transceiver input pins. Use Value: Prevents latch-up or gate oxide damage in NXP TJA1042 or ST TPD12S016 transceivers during 30 kV contact discharge events. |
Use Scenario: Safeguarding 12 V supply inputs to microcontrollers (e.g., Infineon AURIX TC275) and driver ICs in lighting or window lift ECUs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main VBAT rail, activated within 1 ns of transient onset to suppress ISO 7637-2 Pulse 1 (−150 V) and Pulse 5a (100 V). Use Value: Eliminates need for secondary TVS or Zener on regulator input, reducing BOM count while maintaining <55 V stress on LDOs like TLE4275. |
| Infotainment USB Interface | Engine Control Unit Sensor Inputs |
Use Scenario: Shielding USB 2.0 D+/D− lines in head unit against ESD during cable insertion and hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance TVS pair placed adjacent to USB connector, with common anode grounded to shield plane to minimize loop inductance. Use Value: Preserves signal integrity up to 480 Mbps without eye diagram closure, meeting USB-IF ESD immunity requirements. |
Use Scenario: Protecting analog inputs (e.g., MAP, O2 sensors) from load dump and alternator ripple-induced spikes in engine bay harnesses. IC Role / Device Role / Timing Role: Front-end clamp on sensor supply (5 V or 3.3 V) and signal return, limiting transient amplitude before op-amp input stages. Use Value: Avoids ADC saturation and false fault codes during 120 V/10 ms ISO 7637-2 Pulse 5b events, improving diagnostic reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-Q | Single-channel, 24 V VRWM, SMA package (4.5 mm × 2.7 mm); higher VCL (53 V @ 7.3 A) but larger footprint. | Requires two devices for dual-line protection; less suitable for space-constrained modules like mirror ECUs. | Select when higher IPP (7.3 A) is required and board area permits discrete placement. |
| TPD2E001DRYR | Bi-directional, 5 V VRWM, 3.5 pF capacitance; designed for USB/low-voltage data lines, not 12/24 V supply rails. | Cannot withstand automotive supply transients; unsuitable for CAN or VBAT protection due to low breakdown voltage. | Use only for sub-5.5 V high-speed interfaces where ultra-low capacitance is prioritized over surge energy handling. |
Compared with SMAJ24A-Q and TPD2E001DRYR, the MMBZ27VAT-Q uniquely balances dual-line integration, 22 V standoff, and AEC-Q101 compliance in a 2.9 mm × 1.3 mm footprint - making it optimal for compact, high-reliability automotive power and interface protection where space and qualification are critical.
Availability
MMBZ27VAT-Q is available at Aetrix Electronics and suitable for automotive CAN bus protection, body control module power rails, and infotainment USB interface designs requiring stable component supply across multi-year vehicle production cycles.
Supply support for MMBZ27VAT-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 automotive-qualified components and advanced packaging.
The MMBZ27VAT-Q belongs to Nexperia's AEC-Q101-qualified TVS diode portfolio, engineered specifically for robust transient suppression in 12 V/24 V automotive electrical systems - targeting ECU, ADAS, and infotainment subsystems demanding zero field failures.
FAQ
What is the maximum junction temperature rating for MMBZ27VAT-Q?
The MMBZ27VAT-Q has a maximum junction temperature (Tj) of 150 °C, validated per AEC-Q101 thermal stress testing. This allows operation in under-hood environments up to 125 °C ambient with appropriate PCB copper pour and thermal vias, maintaining clamping performance across the full automotive temperature range.
Can MMBZ27VAT-Q be used for bidirectional line protection?
No - the MMBZ27VAT-Q is a unidirectional TVS array with cathode-anode polarity. It protects only positive-going transients on lines referenced to ground. For bidirectional protection (e.g., RS-485), a dedicated bidirectional device such as PESD5V0S1BA must be used instead.
How does the common anode configuration affect PCB layout?
The common anode (pin 3) must connect directly to a low-inductance ground plane or chassis ground point. Layout best practice requires minimizing trace length from pin 3 to ground and avoiding shared return paths - otherwise, voltage bounce during clamping can compromise protection effectiveness on both protected lines simultaneously.
Is MMBZ27VAT-Q compatible with lead-free reflow soldering profiles?
Yes - the SOT23 package is qualified for standard JEDEC J-STD-020 lead-free reflow profiles, including peak temperatures up to 260 °C. The recommended footprint matches Nexperia's sot023_fr design (0.6 mm solder land width, 0.5 mm spacing), ensuring reliable joint formation without tombstoning or voiding.
MMBZ27VAT-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:
- 41V
- Current - Peak Pulse (10/1000µs):
- 1.3A (8/20µs)
- Power - Peak Pulse:
- 24W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 22pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
MMBZ27VAT-QR FAQ
1.How can I place an order for MMBZ27VAT-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ27VAT-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 MMBZ27VAT-QR reliable?
The price and inventory of MMBZ27VAT-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ27VAT-QR is usually 5 days.
3.What payment methods are accepted for MMBZ27VAT-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ27VAT-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ27VAT-QR?
MMBZ27VAT-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ27VAT-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 MMBZ27VAT-QR?
For technical support, including MMBZ27VAT-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ27VAT-QR requirements.
6.How does Aetrix verify that MMBZ27VAT-QR is sourced from the original manufacturer or authorized distributors?
All MMBZ27VAT-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 MMBZ27VAT-QR meets industry standards.
7.What is the process for return or replacement of MMBZ27VAT-QR?
All MMBZ27VAT-QR units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ27VAT-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 MMBZ27VAT-QR part is unused and in its original packaging.
Return procedure for MMBZ27VAT-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ27VAT-QR Tags
-
ESD9B5.0ST5G
onsemi
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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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