My Inquiry
My Account
Diodes Incorporated MMBZ27VCL-7
- Part No.:
- MMBZ27VCL-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ27VCL-7.pdf
- Description:
- TVS DIODE 22VWM 38VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,222
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMBZ27VCL-7 from Diodes Incorporated is a dual unidirectional surface-mount TVS diode in common-cathode configuration, designed for ESD and transient overvoltage protection in low-voltage signal lines. It delivers 40 W peak pulse power (1.0 ms), has a 27 V nominal breakdown voltage (±5%), clamps to ≤38 V at 1.0 A peak current, and operates across –55 °C to +150 °C - used in USB data lines, I²C buses, and sensor interface circuits.
For engineers reviewing the MMBZ27VCL-7 datasheet, MMBZ27VCL-7 pinout, MMBZ27VCL-7 application, or MMBZ27VCL-7 equivalent, key selection criteria include unidirectional dual-channel clamping performance, SOT23 package compatibility with automated assembly, low leakage (<1.0 nA @ 22 V), thermal derating behavior on FR-5 PCBs, and AEC-Q101 qualification status of the automotive-grade variant.
Technical Context
This dual TVS device integrates two identical unidirectional protection elements sharing a common cathode terminal, enabling bidirectional protection of differential pairs or independent protection of two signals with shared ground return. Its 225 mW steady-state power dissipation and 556 °C/W junction-to-ambient thermal resistance are specified for FR-5 board mounting with defined 1.0 × 0.75 inch copper pad layout.
The device exhibits +0.090 %/°C temperature coefficient of breakdown voltage and maintains <1.0 nA reverse leakage at VRWM = 22 V, supporting stable clamping in industrial temperature environments. Breakdown voltage tolerance (25.65–28.35 V) and clamping voltage (≤38 V @ 1.0 A) are validated per REA 10×1000 µs waveform testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 40 W @ 1.0 ms (REA 10×1000 µs waveform); defines maximum transient energy absorption capability per channel |
| Reverse Standoff Voltage | 22 V max; ensures reliable blocking of normal operating signals up to 22 V without leakage or conduction |
| Breakdown Voltage | 25.65–28.35 V @ IT = 1 mA; tight 5% tolerance enables precise overvoltage threshold setting |
| Clamping Voltage | ≤38 V @ IPP = 1.0 A; limits downstream IC voltage stress during ESD or surge events |
| Leakage Current | ≤1.0 nA @ VRWM = 22 V; minimizes signal path loading and power loss in battery-powered systems |
| Operating Temperature | –55 °C to +150 °C; supports deployment in under-hood automotive, industrial control, and outdoor electronics |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin-plated alloy 42 leadframe, moisture sensitivity level 1 (J-STD-020), UL 94V-0 rated, weight ≈ 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first TVS element; connects to protected signal line (e.g., I²C SDA) |
| Pin 2 | Cathode (Common) | Shared cathode node for both TVS elements; ties to system ground or reference plane |
| Pin 3 | Anode 2 | Input terminal for second TVS element; connects to second protected signal line (e.g., I²C SCL) |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode topology | Enables compact protection of differential or paired signal lines using single SOT23 footprint |
| 40 W peak pulse rating | Withstands IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) ESD transients without degradation |
| Low 1.0 nA leakage @ 22 V | Preserves signal integrity and battery life in always-on sensor and communication interfaces |
| AEC-Q101 qualified variant available | MMBZ27VCLQ-7-F meets automotive reliability requirements including PPAP and IATF 16949 manufacturing controls |
| Lead-free & halogen-free | Fully RoHS 3 compliant (<900 ppm Br/Cl, <1000 ppm Sb); supports green manufacturing and end-of-life recycling |
Applications
| USB 2.0 Data Lines | I²C Bus Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines in portable USB peripherals against ESD events during hot-plug insertion. IC Role / Device Role: Dual-channel unidirectional TVS clamping each data line to ground while preserving DC bias and high-speed signal fidelity. Use Value: Prevents latch-up or damage to USB transceivers by limiting transient voltage to ≤38 V at 1.0 A, within USB 2.0 eye diagram timing margins. |
Use Scenario: Safeguarding I²C SDA and SCL lines in industrial sensors and microcontroller-based modules exposed to board-level ESD. IC Role / Device Role: Common-cathode dual TVS provides matched clamping thresholds and low leakage for open-drain bus operation. Use Value: Maintains bus pull-up functionality with <1.0 nA leakage, ensuring reliable multi-master arbitration and clock stretching. |
| Automotive LIN Transceivers | Industrial Analog Sensor Inputs |
Use Scenario: Protecting LIN bus pins in body control modules where transients arise from load dump or inductive switching. IC Role / Device Role: Unidirectional clamping of LIN TX/RX lines referenced to vehicle chassis ground via shared cathode. Use Value: Withstands –55 °C to +150 °C ambient range and meets AEC-Q101 stress test requirements when using Q-grade variant. |
Use Scenario: Shielding 4–20 mA or 0–10 V analog inputs in PLC I/O modules from field-induced surges and ESD. IC Role / Device Role: Dual TVS placed at connector entry point, clamping each analog channel independently to system ground. Use Value: 22 V standoff prevents interference with 24 V loop-powered operation while clamping transients below ADC input damage thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A | Single-channel SMB package; 400 W peak power; 27 V standoff; higher clamping (42.1 V @ 9.2 A) | Requires two devices for dual-line protection; larger footprint; suited for higher-energy surges | Select when protecting high-current lines (e.g., CAN, RS-485) where 400 W rating is needed and space allows SMB |
| MMBZ27VCLA-7 | Direct replacement; same SOT23 package; improved thermal design; lower RθJA (500 °C/W); same electrical specs | Identical pinout and function; recommended for new designs per Diodes' notice | Prefer for all new designs due to enhanced thermal performance and continued production support |
Compared with SMBJ27A and MMBZ27VCLA-7, the MMBZ27VCL-7 offers optimal space efficiency for dual low-energy signal protection but lacks the thermal margin of its successor and the surge capacity of discrete SMB devices - choose based on footprint constraints, thermal environment, and long-term supply assurance.
Availability
MMBZ27VCL-7 is available at Aetrix Electronics and suitable for USB interface protection, I²C bus hardening, automotive LIN subsystems, and industrial analog input conditioning requiring stable component supply and consistent SOT23 assembly compatibility.
Supply support for MMBZ27VCL-7 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design, manufacturing, and distribution operations across Asia, the Americas, and Europe.
The MMBZ27VCL belongs to Diodes' TVS Diode family, engineered specifically for high-reliability, low-capacitance ESD and transient suppression in space-constrained, high-volume consumer and industrial electronics.
FAQ
Is MMBZ27VCL-7 RoHS 3 compliant?
Yes, MMBZ27VCL-7 is fully RoHS 3 compliant (EU Directive 2015/863/EU), containing <900 ppm bromine, <900 ppm chlorine, and <1000 ppm antimony compounds. It is also halogen-free and lead-free, with matte tin plating over Alloy 42 leadframe per MIL-STD-202.
What is the difference between MMBZ27VCL-7 and MMBZ27VCLQ-7-F?
MMBZ27VCLQ-7-F is the AEC-Q101 qualified automotive version, manufactured in IATF 16949 certified facilities and PPAP capable. Electrically identical, it adds change control, extended qualification testing, and automotive-specific documentation - while MMBZ27VCL-7 targets commercial/industrial use.
Can MMBZ27VCL-7 be used for bidirectional signal protection?
No - MMBZ27VCL-7 is unidirectional only, with two anodes and one shared cathode. For bidirectional protection of a single line, a dedicated bidirectional TVS (e.g., MMBZ27VAL) or back-to-back configuration would be required; this device protects two separate unidirectional paths to ground.
Why is MMBZ27VCL-7 not recommended for new designs?
Diodes Incorporated explicitly states MMBZ27VCL-7 is not recommended for new designs due to the introduction of the improved MMBZ27VCLA-7, which features lower thermal resistance (500 °C/W vs. 556 °C/W) and updated manufacturing process - offering better long-term reliability and thermal performance in the same SOT23 footprint.
MMBZ27VCL-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 25.65V
- Voltage - Clamping (Max) @ Ipp:
- 38V
- Current - Peak Pulse (10/1000µs):
- 1A
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MMBZ27VCL-7 FAQ
1.How can I place an order for MMBZ27VCL-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ27VCL-7 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 MMBZ27VCL-7 reliable?
The price and inventory of MMBZ27VCL-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ27VCL-7 is usually 5 days.
3.What payment methods are accepted for MMBZ27VCL-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ27VCL-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ27VCL-7?
MMBZ27VCL-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ27VCL-7 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 MMBZ27VCL-7?
For technical support, including MMBZ27VCL-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ27VCL-7 requirements.
6.How does Aetrix verify that MMBZ27VCL-7 is sourced from the original manufacturer or authorized distributors?
All MMBZ27VCL-7 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 MMBZ27VCL-7 meets industry standards.
7.What is the process for return or replacement of MMBZ27VCL-7?
All MMBZ27VCL-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ27VCL-7, 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 MMBZ27VCL-7 part is unused and in its original packaging.
Return procedure for MMBZ27VCL-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ27VCL-7 Tags
-
ESD9B5.0ST5G
onsemi
-
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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
