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Diodes Incorporated MMBZ27VCL-7-F
- Part No.:
- MMBZ27VCL-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ27VCL-7-F.pdf
- Description:
- TVS DIODE 22VWM 38VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:765,138
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Product details
Overview
MMBZ27VCL-7-F from Diodes Incorporated is a dual unidirectional TVS diode in common-cathode SOT23 package, rated for 40W peak pulse power (1ms), 27V nominal breakdown voltage (±5%), and 38V clamping voltage at 1A peak current. It delivers ESD protection for low-voltage data lines in portable electronics and industrial I/O interfaces.
For engineers reviewing the MMBZ27VCL-7-F datasheet, MMBZ27VCL-7-F pinout, MMBZ27VCL-7-F application, or MMBZ27VCL-7-F equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, leakage current (<1.0nA @ 22V), thermal resistance (556°C/W), and AEC-Q101 qualification status of the automotive-grade variant.
Technical Context
This dual TVS operates in common-cathode configuration, enabling bidirectional protection of two signal lines with shared ground reference. Each element has independent 27V breakdown (25.65–28.35V), 38V clamping at 1A IPP, and +0.090%/°C temperature coefficient.
Designed for transient suppression per IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT), it sustains 225mW steady-state power on FR-5 PCB and derates linearly above +25°C ambient per Figure 1 - critical for high-density board layouts with limited airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 25.65–28.35 V @ 1mA IT - ensures reliable turn-on before protected circuit damage |
| Clamping Voltage (VC) | 38 V @ 1 A IPP - limits voltage seen by downstream IC to safe level during surge |
| Peak Pulse Power (PPK) | 40 W @ 1.0 ms - handles IEC 61000-4-2 contact discharge up to ±15 kV |
| Reverse Leakage (IR) | <1.0 nA @ 22 V - prevents signal distortion and battery drain in always-on circuits |
| Thermal Resistance (RθJA) | 556 °C/W - requires careful PCB copper area allocation to avoid junction overheating |
| Operating Temp Range | −55 to +150 °C - supports industrial and under-hood automotive environments |
Pinout & Package
Package: SOT23 - surface-mount, 3-terminal plastic package with 0.008 g mass, UL 94V-0 rating, and matte tin-plated Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input node for first protected signal line (e.g., USB D+) |
| Pin 2 | Cathode (Common) | Shared cathode connection to system ground or TVS return path |
| Pin 3 | Anode 2 | Input node for second protected signal line (e.g., USB D−) |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode topology | Enables compact dual-line ESD protection without separate ground traces |
| 40W peak pulse rating | Meets IEC 61000-4-2 Level 4 (±15 kV contact) with margin |
| Low 1.0 nA leakage @ 22V | Preserves signal integrity in high-impedance sensor or analog front-end paths |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and automotive "Green" standards |
Applications
| USB 2.0 Interface Protection | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting D+ and D− lines of embedded USB host ports against ESD events during field servicing. IC Role / Device Role: Dual-line transient voltage suppressor with shared cathode grounding to minimize PCB footprint. Use Value: Clamps transients to ≤38 V while maintaining <1 nA leakage-preserving USB eye diagram integrity and enumeration reliability. | Use Scenario: Safeguarding 4–20 mA current-loop sensor inputs in PLC analog modules exposed to factory floor EFT noise. IC Role / Device Role: Low-leakage dual TVS placed directly at connector entry point before signal conditioning amplifier. Use Value: Prevents latch-up in op-amps by limiting surge voltage to 38 V, with thermal stability across −40°C to +85°C operating range. |
| Automotive Body Control Module I/O | Medical Patient Monitor Data Ports |
Use Scenario: Protecting LIN bus and switch input lines in BCMs where space and reliability are constrained. IC Role / Device Role: AEC-Q101 qualified dual TVS (MMBZ27VCLQ-7-F variant) used on non-safety-critical control signals. Use Value: Delivers 40W surge handling with PPAP-capable traceability and IATF 16949 manufacturing controls. | Use Scenario: Shielding RS-232 and SPI debug ports on Class II medical devices from electrostatic discharge during clinical handling. IC Role / Device Role: Dual-channel ESD clamp meeting IEC 60601-1-2 immunity requirements for patient-connected equipment. Use Value: Ensures <1 nA leakage avoids DC offset errors in precision biopotential amplifiers upstream of the port. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ27VCLA-7 | Revised version with improved thermal performance (RθJA = 470°C/W) and tighter VBR tolerance (±3%) | Preferred for new designs requiring higher reliability margin and lower clamping variance | Select when upgrading legacy designs or targeting extended temperature operation beyond +125°C |
| SMAJ27A | Single-element SMA package, 400W PPK, 43.5V VC @ 10A - larger footprint, higher clamping | Used where higher surge current capacity is needed but dual-line integration is not required | Choose only if board space allows SMA and system-level surge exceeds 1A IPP |
Compared with MMBZ27VCLA-7, this part offers tighter breakdown control and better thermal dissipation but requires layout revision; versus SMAJ27A, it saves >60% board area and lowers clamping voltage by 5.5V at 1A, at the cost of lower absolute surge rating.
Availability
MMBZ27VCL-7-F is available at Aetrix Electronics and suitable for USB interface protection, industrial sensor signal conditioning, and automotive body control module I/O requiring stable component supply and full traceability.
Supply support for MMBZ27VCL-7-F 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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The MMBZ series belongs to Diodes' TVS Diode portfolio, engineered specifically for compact, high-reliability ESD and surge protection in space-constrained consumer, industrial, and automotive electronics.
FAQ
What is the maximum clamping voltage of MMBZ27VCL-7-F at 1A peak pulse current?
The maximum clamping voltage (VC) is 38 V at 1 A peak pulse current (IPP), measured using the 10/1000 µs waveform per REA standard. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events.
Is MMBZ27VCL-7-F suitable for automotive applications?
The MMBZ27VCL-7-F itself is not AEC-Q101 qualified; however, its automotive-grade variant MMBZ27VCLQ-7-F meets AEC-Q101, is PPAP capable, and is manufactured in IATF 16949 certified facilities - making it appropriate for non-safety-critical automotive body electronics.
How does the common-cathode configuration affect PCB layout?
The common-cathode arrangement (Pin 2) requires only one ground connection for both protected lines, reducing routing complexity and minimizing loop area. This lowers inductive coupling during fast transients and simplifies placement near connectors or IC I/O pins without splitting ground returns.
Why is MMBZ27VCL-7-F marked "not recommended for new designs"?
Diodes Incorporated recommends migrating to MMBZ27VCLA-7 due to its enhanced thermal resistance (470°C/W vs. 556°C/W), tighter breakdown voltage tolerance (±3% vs. ±5%), and improved long-term reliability - all validated in the same SOT23 package with identical pinout and footprint compatibility.
MMBZ27VCL-7-F 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:
- Active
- 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-F FAQ
1.How can I place an order for MMBZ27VCL-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ27VCL-7-F 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-F reliable?
The price and inventory of MMBZ27VCL-7-F 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-F is usually 5 days.
3.What payment methods are accepted for MMBZ27VCL-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ27VCL-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ27VCL-7-F?
MMBZ27VCL-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ27VCL-7-F 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-F?
For technical support, including MMBZ27VCL-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ27VCL-7-F requirements.
6.How does Aetrix verify that MMBZ27VCL-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ27VCL-7-F 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-F meets industry standards.
7.What is the process for return or replacement of MMBZ27VCL-7-F?
All MMBZ27VCL-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ27VCL-7-F, 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-F part is unused and in its original packaging.
Return procedure for MMBZ27VCL-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ27VCL-7-F Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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