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Nexperia USA Inc. MMBZ18VCL,215
- Part No.:
- MMBZ18VCL,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ18VCL,215.pdf
- Description:
- TVS DIODE 14.5VWM 25VC TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,990
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Product details
Overview
MMBZ18VCL from Nexperia is a unidirectional double ESD protection diode in common-cathode SOT23 configuration, designed for transient overvoltage suppression on up to two signal lines. It delivers 30 kV contact ESD protection (IEC 61000-4-2 Level 4), 14.5 V reverse standoff voltage, ≤90 pF capacitance, ≤5 nA leakage, and 40 W peak pulse power - deployed in automotive ECUs and portable electronics interfaces.
For engineers reviewing the MMBZ18VCL datasheet, MMBZ18VCL pinout, MMBZ18VCL application, or MMBZ18VCL equivalent, key selection criteria include common-cathode dual-line ESD clamping behavior, low-capacitance signal integrity preservation, AEC-Q101 qualification for automotive use, and thermal resistance (Rth(j-a) = 350 K/W) under standard FR4 mounting.
Technical Context
This device implements a dual-anode, single-common-cathode topology enabling simultaneous unidirectional protection of two independent signal paths to ground. Its clamping action activates at 17.1–18.9 V breakdown (IR = 1 mA), limiting transients to ≤25 V at 1.6 A (10/1000 µs waveform).
It supports bidirectional protection of a single line via symmetrical conduction across both anodes when referenced to cathode, with verified performance per IEC 61000-4-2 (30 kV contact, 15 kV air) and MIL-STD-883 HBM (8 kV). Junction temperature is rated to 150 °C with derated pulse power above 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 14.5 V - Maximum continuous operating voltage before leakage exceeds 5 nA; defines safe signal swing range. |
| Breakdown Voltage (VBR) | 17.1–18.9 V @ 1 mA - Threshold where avalanche conduction begins; sets minimum clamping onset point. |
| Clamping Voltage (VCL) | 25 V @ 1.6 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC input survival. |
| Diode Capacitance (Cd) | 70–90 pF @ 1 MHz, 0 V - Low enough to avoid signal distortion in USB 2.0, audio, and I²C lines. |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2 Level 4) - Meets automotive and industrial immunity requirements without external shielding. |
| Peak Pulse Power (PPPM) | 40 W @ 25 °C - Sustains high-energy transients; derates linearly above ambient per Fig. 3. |
| Junction Temperature (Tj) | 150 °C max - Enables operation in under-hood automotive environments with proper PCB copper area. |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 × 1.3 × 1.0 mm body, standard footprint per Fig. 10 (reflow) and Fig. 11 (wave).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | Anode of Diode 1 | Connects to first signal line requiring unidirectional ESD clamp to ground (cathode). |
| 2 (A2) | Anode of Diode 2 | Connects to second independent signal line; enables dual-line protection with shared cathode return. |
| 3 (CC) | Common Cathode | Single ground reference node; must be routed with minimal inductance to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional dual-line protection | Two independent anodes share one cathode, allowing discrete ESD hardening of separate data paths (e.g., CAN_H/CAN_L or USB_DP/DM) without cross-talk. |
| Bidirectional single-line mode | When used with one anode floating or tied together, provides symmetric ±30 kV ESD protection on a single bidirectional bus like RS-485. |
| Ultra-low leakage current | ≤5 nA at 14.5 V enables use on high-impedance sensor inputs and battery-backed circuits without measurable DC loading. |
| AEC-Q101 qualification | Validated for automotive applications including engine control, infotainment, and ADAS modules per stress test requirements. |
| Thermal design support | Rth(j-sp) = 60 K/W to solder point (pin 3) allows accurate junction temperature estimation during surge events with PCB copper thermal relief. |
Applications
| Automotive ECU Protection | USB 2.0 Interface Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN signal pins in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Clamps fast transients (<100 ns rise time) before they reach MCU GPIO or transceiver inputs. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V automotive microcontrollers while maintaining <90 pF signal path loading. |
Use Scenario: Safeguarding DP/DM lines of USB 2.0 ports in docking stations and peripherals against user ESD events. IC Role / Device Role / Timing Role: Provides sub-25 V clamping during 30 kV contact discharge without distorting 480 Mbps data eye. Use Value: Eliminates need for series resistors or ferrites that degrade signal integrity, preserving full-speed USB compliance. |
| Audio Line Input Protection | Industrial Sensor Interface |
|
Use Scenario: Shielding analog audio inputs (e.g., microphone bias lines) in smart speakers and headsets from handling ESD. IC Role / Device Role / Timing Role: Blocks >15 kV air discharge transients while adding negligible noise or offset due to <5 nA leakage. Use Value: Maintains SNR >100 dB in 24-bit audio paths and avoids DC shift in electret mic bias networks. |
Use Scenario: Guarding 4–20 mA current loop inputs in PLC analog modules against field-induced surges and cable coupling. IC Role / Device Role / Timing Role: Absorbs 40 W transient energy without thermal runaway, thanks to 150 °C Tj rating and FR4 thermal design rules. Use Value: Extends field reliability beyond IEC 61000-4-5 Level 3 (2 kV surge) without requiring additional TVS arrays or spark gaps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUP4202MR6T1G | Same SOT23-3, common-cathode, but higher Cd (120 pF typ) and lower VRWM (12 V); 24 W PPPM. | Less suitable for high-speed USB or HDMI; better for lower-voltage logic (1.8–3.3 V) with tighter VRWM margin. | Select when protecting 12 V tolerant lines where capacitance is non-critical and cost is prioritized over speed. |
| Vishay ESDE0402-18 | 0402 DFN package (0.6 × 0.3 mm), same VRWM (14.5 V), but lower PPPM (24 W) and Cd (55 pF typ). | Enables ultra-compact layout on dense RF boards; not AEC-Q101 qualified; limited thermal mass for repeated surges. | Choose for space-constrained consumer wearables or Bluetooth modules where board area outweighs automotive qualification needs. |
Compared with NUP4202MR6T1G and ESDE0402-18, MMBZ18VCL uniquely balances AEC-Q101 compliance, 40 W surge capacity, and 90 pF capacitance in a manufacturable SOT23 package - making it optimal for automotive and industrial designs requiring proven reliability and moderate speed.
Availability
MMBZ18VCL is available at Aetrix Electronics and suitable for automotive electronic control units, USB 2.0 interface protection, and industrial sensor interface applications requiring stable component supply and long-term lifecycle assurance.
Supply support for MMBZ18VCL 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 essential semiconductors - delivering discrete, logic, and MOSFET solutions optimized for efficiency, miniaturization, and robustness.
MMBZ18VCL belongs to Nexperia's ESD protection portfolio, engineered specifically for I/O line hardening in automotive, industrial, and consumer systems where compact size, low capacitance, and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of MMBZ18VCL under IEC 61000-4-2 ESD stress?
The MMBZ18VCL clamps to ≤25 V when subjected to a 1.6 A peak pulse (10/1000 µs waveform), measured from either anode (pin 1 or 2) to the common cathode (pin 3). This value is specified in Table 7 of the datasheet and confirmed under standardized surge conditions at 25 °C ambient.
Can MMBZ18VCL protect bidirectional communication lines like RS-485?
Yes - by connecting both anodes (pins 1 and 2) to the differential pair and the common cathode (pin 3) to ground, MMBZ18VCL provides symmetrical ±30 kV ESD protection per line. Its unidirectional structure forms a pseudo-bidirectional clamp when used in this configuration, validated per IEC 61000-4-2 air discharge testing.
Is MMBZ18VCL suitable for protecting high-speed digital interfaces such as HDMI or PCIe?
No - with typical capacitance of 70–90 pF, MMBZ18VCL introduces excessive signal loading for HDMI (≥3 GHz) or PCIe (≥2.5 GHz) interfaces. It is appropriate for USB 2.0 (480 Mbps), I²C, UART, and audio lines where bandwidth remains below 100 MHz and capacitance tolerance exceeds 50 pF.
How does thermal resistance affect MMBZ18VCL's surge handling capability?
Rth(j-a) = 350 K/W (standard FR4) means junction temperature rises ~56 °C per watt of average surge power. For a 40 W, 1 ms pulse, peak Tj increase is ~22 °C - well within the 150 °C limit. However, repeated surges require adequate copper pour on pin 3 (Rth(j-sp) = 60 K/W) to prevent localized overheating and parametric drift.
MMBZ18VCL,215 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):
- 14.5V (Max)
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25V
- Current - Peak Pulse (10/1000µs):
- 1.6A
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 70pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
MMBZ18VCL,215 FAQ
1.How can I place an order for MMBZ18VCL,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ18VCL,215 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 MMBZ18VCL,215 reliable?
The price and inventory of MMBZ18VCL,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ18VCL,215 is usually 5 days.
3.What payment methods are accepted for MMBZ18VCL,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ18VCL,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ18VCL,215?
MMBZ18VCL,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ18VCL,215 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 MMBZ18VCL,215?
For technical support, including MMBZ18VCL,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ18VCL,215 requirements.
6.How does Aetrix verify that MMBZ18VCL,215 is sourced from the original manufacturer or authorized distributors?
All MMBZ18VCL,215 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 MMBZ18VCL,215 meets industry standards.
7.What is the process for return or replacement of MMBZ18VCL,215?
All MMBZ18VCL,215 units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ18VCL,215, 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 MMBZ18VCL,215 part is unused and in its original packaging.
Return procedure for MMBZ18VCL,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ18VCL,215 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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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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