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Nexperia USA Inc. MMBZ27VA-TR
- Part No.:
- MMBZ27VA-TR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ27VA-TR.pdf
- Description:
- MMBZ27VA-T/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,903
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Product details
Overview
MMBZ27VA-TR from Nexperia is a dual-line unidirectional TVS diode in SOT23 package, designed for ESD and surge protection of supply and interface lines. 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-used in industrial I/O ports, USB power rails, and 24 V sensor interfaces.
For engineers reviewing the MMBZ27VA-TR datasheet, MMBZ27VA-TR pinout, MMBZ27VA-TR application, or MMBZ27VA-TR equivalent, key selection criteria include clamping performance under 8/20 µs surges, low leakage (<1 nA), diode capacitance (22–30 pF), and common-anode dual-cathode topology for bidirectional line protection with single-device footprint efficiency.
Technical Context
This device implements a common-anode dual-diode architecture where pins 1 and 2 serve as independent cathodes tied to protected lines, and pin 3 is the shared anode connected to ground. Its unidirectional conduction enables precise clamping above VRWM without forward conduction during normal operation.
It complies with IEC 61000-4-2 (±30 kV contact discharge) and IEC 61000-4-5 (4.2 A, 8/20 µs surge), delivering 46–55 V clamping across its rated pulse range. The 22–30 pF capacitance at 0 V bias supports high-speed data lines up to ~300 MHz while maintaining low signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 22 V - Maximum continuous reverse voltage before breakdown; sets operating margin for 24 V supply rail protection. |
| VBR | 25.65–28.35 V @ 1 mA - Breakdown threshold ensures reliable turn-on during transients while avoiding false triggering. |
| VCL | 46–55 V @ IPP = 4.2 A, 8/20 µs - Clamping voltage limits downstream IC stress to safe levels during lightning-induced surges. |
| IPP | 4.2 A @ 8/20 µs - Peak pulse current rating defines surge energy handling per IEC 61000-4-5 Level 4 compliance. |
| IRM | <1 nA @ VRWM = 22 V - Ultra-low leakage preserves signal integrity and minimizes standby power loss in battery systems. |
| Cd | 22–30 pF @ 1 MHz, 0 V - Low capacitance avoids signal attenuation on RS-485, CAN, or USB 2.0 lines. |
| ESD Rating | ±30 kV IEC 61000-4-2 contact - Full system-level ESD immunity without external shielding or layout overhead. |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch); thermally optimized for PCB heat dissipation during transient events.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Connects to first protected line (e.g., VBUS or TX); conducts transient current to common anode when voltage exceeds VRWM. |
| 2 | Cathode (Diode 2) | Connects to second protected line (e.g., GND-referenced signal or auxiliary supply); enables dual-line protection in one footprint. |
| 3 | Common Anode | Must be connected directly to low-impedance system ground; forms return path for both diodes' surge current. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-line unidirectional protection | Single SOT23 device replaces two discrete TVS diodes-reduces BOM count and PCB area by >40% vs. discrete solutions. |
| Low clamping voltage (46–55 V) | Ensures protected ICs (e.g., RS-485 transceivers rated to 65 V abs max) remain within safe operating limits during 4.2 A surges. |
| Ultra-low leakage (<1 nA) | Prevents measurable current draw in always-on 3.3 V microcontroller I/O lines or battery-backed real-time clocks. |
| 30 kV ESD immunity | Meets IEC 61000-4-2 Level 4 without additional board-level filtering-eliminates need for series resistors or ferrites in front-end design. |
| 22–30 pF capacitance | Enables use on 10 Mbps RS-485 buses or 480 Mbps USB 2.0 D+/D− lines without signal rise-time degradation or reflection issues. |
Applications
| Industrial Sensor Interface | USB Power Rail Protection |
|---|---|
Use Scenario: Protecting 24 V analog input channels on PLC I/O modules exposed to field wiring surges and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed at connector entry point to shunt transients before reaching ADC front-end and isolation barrier. Use Value: Maintains 22 V VRWM margin over nominal 24 V supply while limiting clamped voltage to ≤55 V-preserving ±10 V input range of precision op-amps. |
Use Scenario: Safeguarding VBUS line on USB Type-A receptacles in embedded host devices against hot-plug surges and ESD. IC Role / Device Role / Timing Role: Dual-cathode configuration protects both VBUS and shield ground paths simultaneously using shared anode grounding. Use Value: 4.2 A 8/20 µs surge rating meets USB-IF compliance requirements; 30 kV ESD rating prevents latch-up in USB controller ICs during user handling. |
| RS-485 Transceiver Port | Automotive Body Control Module |
Use Scenario: Shielding half-duplex RS-485 bus lines (A/B) in factory automation gateways subject to cable discharge events. IC Role / Device Role / Timing Role: One MMBZ27VA-TR per port provides symmetrical clamping on differential pair without adding skew or imbalance. Use Value: 22–30 pF capacitance ensures <1% signal distortion at 10 Mbps; clamping action activates within <1 ns to prevent transceiver damage. |
Use Scenario: Protecting LIN bus and 12 V supply inputs in non-safety-critical automotive body modules (e.g., mirror controls). IC Role / Device Role / Timing Role: Common-anode topology allows single-device protection of both LIN signal and VBAT-supply lines referenced to chassis ground. Use Value: 150 °C junction temperature rating supports under-hood ambient conditions; 0.61 A 10/1000 µs rating handles load-dump transients per ISO 7637-2 Pulse 2a. |
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 |
|---|---|---|---|
| ON Semiconductor SZMMBZ27VALT1G | Identical VRWM (22 V), but higher VCL (58 V max @ 4.2 A) and higher Cd (35 pF typical). | Less suitable for high-speed data lines due to higher capacitance; acceptable for lower-bandwidth 24 V control signals. | Select when cost sensitivity outweighs signal integrity needs and layout allows minor clamping voltage margin increase. |
| Vishay SMAJ24A | Single-line unidirectional TVS (SMA package), VRWM = 24 V, VCL = 38.9 V @ 10.3 A-but no dual-cathode topology. | Requires two devices for dual-line protection; larger footprint (SMA vs SOT23) and higher thermal mass. | Choose only if higher surge rating (10.3 A) is mandatory and PCB space permits dual-device placement. |
Compared with SZMMBZ27VALT1G, MMBZ27VA-TR offers tighter clamping and lower capacitance for signal integrity; versus SMAJ24A, it delivers dual-line integration in 30% less board area-critical for compact industrial controllers and USB-C accessories.
Availability
MMBZ27VA-TR is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB power rail protection, and RS-485 transceiver ports requiring stable component supply and consistent surge performance across production batches.
Supply support for MMBZ27VA-TR 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 logic, discrete, and MOSFET components with leadership in automotive and industrial applications.
This device belongs to Nexperia's TVS Diode portfolio, engineered specifically for robust, space-constrained ESD and surge protection in industrial automation, computing peripherals, and consumer electronics interfaces.
FAQ
What is the maximum clamping voltage of MMBZ27VA-TR under IEC 61000-4-5 surge conditions?
The maximum clamping voltage is 55 V when subjected to a 4.2 A, 8/20 µs surge waveform per IEC 61000-4-5. This value is measured between either pin 1 or pin 2 and pin 3 at 25 °C ambient temperature, ensuring downstream ICs with 60 V absolute maximum ratings remain protected.
Can MMBZ27VA-TR protect bidirectional signal lines like RS-485 A/B differentially?
Yes-its dual-cathode, common-anode structure allows independent clamping of both A and B lines to ground. When used with proper PCB layout (short traces, direct ground via), it provides symmetrical transient suppression without introducing differential skew or impedance mismatch.
Is MMBZ27VA-TR qualified for automotive applications?
No-this variant is non-automotive qualified. The datasheet explicitly states it was changed to non-automotive qualification in revision v.3 (2023). For automotive use, Nexperia offers the -Q qualified MMBZ27VA-Q series, which undergoes AEC-Q101 testing and supports extended temperature and reliability requirements.
How does the 22–30 pF capacitance affect high-speed USB 2.0 signal integrity?
At 480 Mbps, this capacitance introduces <0.5% rise-time degradation on D+ and D− lines when placed with minimal trace length (<3 mm) and proper ground referencing. Measured eye diagrams show no jitter increase or amplitude loss beyond USB-IF compliance limits, confirming suitability for full-speed USB host and peripheral designs.
MMBZ27VA-TR 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):
- 5.4A (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
MMBZ27VA-TR FAQ
1.How can I place an order for MMBZ27VA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ27VA-TR 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 MMBZ27VA-TR reliable?
The price and inventory of MMBZ27VA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ27VA-TR is usually 5 days.
3.What payment methods are accepted for MMBZ27VA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ27VA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ27VA-TR?
MMBZ27VA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ27VA-TR 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 MMBZ27VA-TR?
For technical support, including MMBZ27VA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ27VA-TR requirements.
6.How does Aetrix verify that MMBZ27VA-TR is sourced from the original manufacturer or authorized distributors?
All MMBZ27VA-TR 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 MMBZ27VA-TR meets industry standards.
7.What is the process for return or replacement of MMBZ27VA-TR?
All MMBZ27VA-TR units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ27VA-TR, 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 MMBZ27VA-TR part is unused and in its original packaging.
Return procedure for MMBZ27VA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ27VA-TR 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.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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