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Nexperia USA Inc. MMBZ27VUA-QX
- Part No.:
- MMBZ27VUA-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MMBZ27VUA-QX.pdf
- Description:
- MMBZ27VUA-Q/SOD323/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:1,171
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Product details
Overview
MMBZ27VUA-Q from Nexperia is a unidirectional transient voltage suppression (TVS) diode in SOD323 package, designed for ESD and surge protection of single-polarity interface/supply lines. It features 24 V reverse standoff voltage (VRWM), 70 V clamping voltage at 4.5 A peak pulse current (IPPM), and 30 kV IEC 61000-4-2 contact ESD rating - deployed in automotive infotainment power rails and CAN transceiver supply inputs.
For engineers reviewing the MMBZ27VUA-Q datasheet, MMBZ27VUA-Q pinout, MMBZ27VUA-Q application, or MMBZ27VUA-Q equivalent, key selection criteria include clamping performance under 8/20 µs surges, ultra-low leakage (<1 nA at 24 V), AEC-Q101 qualification, and low capacitance (23 pF typical) for high-speed signal line compatibility.
Technical Context
This unidirectional TVS diode operates as a shunt protector: it remains high-impedance below 24 V VRWM, then avalanches at 26.2–27.5 V (VBR @ 10 mA) to clamp transients. Its dynamic resistance is 1.6 Ω (typical) under 100 ns TLP pulses, enabling fast response to ESD events.
The device is optimized for single-line protection where polarity is fixed relative to ground - e.g., positive-supply rails or unidirectional data lines - and leverages its 23 pF capacitance and 1 nA IRM to minimize signal distortion in 10–100 Mbps interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 24 V - Maximum continuous reverse voltage before leakage exceeds 1 µA; defines safe operating margin for 24 V supply lines. |
| VBR (min) | 26.2 V @ 10 mA - Ensures reliable avalanche initiation above system operating voltage, preventing premature conduction. |
| VCL | 70 V @ IPPM = 4.5 A (8/20 µs) - Limits voltage seen by downstream ICs during IEC 61000-4-5 surge events. |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2) - Withstands repeated human-body-model ESD strikes without degradation. |
| Cd | 23 pF @ 0 V, 1 MHz - Low enough to avoid signal integrity issues on USB 2.0 or RS-485 lines up to 12 Mbps. |
| IRM | 1 nA @ VR = 24 V - Minimizes standby power loss and avoids false triggering in high-impedance sensing circuits. |
| Tj max | 150 °C - Supports operation in under-hood automotive environments with localized heating during surge events. |
Pinout & Package
SOD323 surface-mount plastic package: 2-terminal, 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode-marked with bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to protected line; conducts when line voltage exceeds VRWM + VBR, shunting surge current to ground via Pin 2. |
| 2 (A) | Anode | Connected to system ground; completes low-impedance path during transient clamping; must be routed with minimal inductance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress - suitable for engine control and ADAS modules. |
| Low clamping ratio (VCL/VBR) | ~2.6× (70 V / 27 V) - Delivers tight overvoltage limiting with minimal headroom, protecting 3.3 V–24 V logic and analog ICs. |
| Ultra-low leakage | 1 nA at 24 V - Enables use in battery-powered systems and high-precision sensor front-ends without DC error injection. |
| Low dynamic resistance | 1.6 Ω (TLP, 100 ns) - Reduces clamping voltage overshoot during fast-rising ESD events, improving protection margin. |
| Small footprint | SOD323 package - Saves PCB area vs. SMA/SMB; compatible with automated placement and reflow soldering per IPC-7351B. |
Applications
| Automotive Infotainment Power Rail | Industrial RS-485 Transceiver Port |
|---|---|
|
Use Scenario: Protecting 24 V power input to head unit display controllers against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VCC and GND, clamping transients within 1 ns of onset. Use Value: Limits voltage to ≤70 V during 4.5 A surges, preventing latch-up or gate oxide damage in PMICs and microcontrollers. |
Use Scenario: Safeguarding RS-485 driver/receiver pins against ESD and cable-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Line-side TVS connected anode-to-ground, cathode-to-data line, suppressing ±30 kV contact discharges. Use Value: 23 pF capacitance avoids signal edge degradation at 10 Mbps; 1 nA leakage prevents bias current errors in differential receivers. |
| Consumer USB-C Power Delivery Path | Computing PCIe Slot Auxiliary Power |
|
Use Scenario: Guarding 20 V PP (VBUS) line in portable docking stations against hot-plug transients and ESD. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VBUS rail upstream of buck converter, activated before internal FETs fail. Use Value: 24 V VRWM provides 4 V margin above nominal 20 V PD profile; 70 V clamping protects 30 V-rated input capacitors. |
Use Scenario: Securing +3.3 V AUX power pin on PCIe slots against backplane coupling and board-level ESD. IC Role / Device Role / Timing Role: Point-of-load TVS on motherboard near slot connector, minimizing trace inductance to ground plane. Use Value: AEC-Q101 qualification ensures long-term stability under thermal cycling; SOD323 footprint allows dense layout near high-speed traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | DO-214AC package; higher VCL = 38.9 V @ 15.4 A; 3x larger footprint; 100 pF capacitance | Better suited for high-energy 10/1000 µs surges but incompatible with space-constrained PCBs and >1 Mbps signals | Select when surge energy exceeds 4.5 A 8/20 µs and board area permits larger SMD package. |
| PGB1020303MR | 0201 DFN; bidirectional; 12 V VRWM; 0.3 pF capacitance; no AEC-Q101 rating | Optimized for ultra-high-speed USB 3.2/PCIe Gen4 signal lines, not supply rail protection | Choose only for <1 V supply or sub-GHz data lines requiring <0.5 pF loading; not a functional replacement for MMBZ27VUA-Q. |
Compared with SMAJ24A and PGB1020303MR, the MMBZ27VUA-Q uniquely balances automotive qualification, 24 V system compatibility, low capacitance, and compact SOD323 packaging - making it optimal for cost-sensitive, space-limited 24 V supply protection where ESD robustness and moderate surge handling are primary requirements.
Availability
MMBZ27VUA-Q is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial RS-485 transceiver ports, and consumer USB-C power delivery paths requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MMBZ27VUA-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 MMBZ27VUA-Q belongs to Nexperia's AEC-Q101-qualified TVS diode portfolio, engineered specifically for robust, low-capacitance transient protection in automotive and industrial power and interface lines.
FAQ
Is MMBZ27VUA-Q bidirectional or unidirectional?
The MMBZ27VUA-Q is a unidirectional TVS diode, configured with cathode (Pin 1) on the protected line and anode (Pin 2) grounded. It conducts only during positive transients relative to ground, providing asymmetric clamping optimized for supply rails and unidirectional signal lines.
What is the maximum surge current this device can handle?
The MMBZ27VUA-Q is rated for 4.5 A peak pulse current (IPPM) under the 8/20 µs waveform defined in IEC 61000-4-5. This value is absolute maximum; sustained or repeated surges above this level may cause permanent degradation or failure.
Does this part meet automotive reliability standards?
Yes - the MMBZ27VUA-Q is fully qualified to AEC-Q101, including stress tests for temperature cycling, high-temperature reverse bias, and ESD. It is recommended by Nexperia for automotive applications including infotainment, body electronics, and ADAS subsystems.
How does its 23 pF capacitance affect high-speed signal lines?
At 23 pF (typical, 0 V bias), the MMBZ27VUA-Q introduces negligible loading on signal lines up to 12 Mbps (e.g., RS-485, CAN FD). For >100 Mbps interfaces like USB 2.0, capacitance should be verified in-situ with IBIS models, as layout parasitics dominate total loading.
MMBZ27VUA-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.2V
- Voltage - Clamping (Max) @ Ipp:
- 70V
- Current - Peak Pulse (10/1000µs):
- 4.5A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 23pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
MMBZ27VUA-QX FAQ
1.How can I place an order for MMBZ27VUA-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ27VUA-QX 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 MMBZ27VUA-QX reliable?
The price and inventory of MMBZ27VUA-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ27VUA-QX is usually 5 days.
3.What payment methods are accepted for MMBZ27VUA-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ27VUA-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ27VUA-QX?
MMBZ27VUA-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ27VUA-QX 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 MMBZ27VUA-QX?
For technical support, including MMBZ27VUA-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ27VUA-QX requirements.
6.How does Aetrix verify that MMBZ27VUA-QX is sourced from the original manufacturer or authorized distributors?
All MMBZ27VUA-QX 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 MMBZ27VUA-QX meets industry standards.
7.What is the process for return or replacement of MMBZ27VUA-QX?
All MMBZ27VUA-QX units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ27VUA-QX, 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 MMBZ27VUA-QX part is unused and in its original packaging.
Return procedure for MMBZ27VUA-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ27VUA-QX Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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