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Diodes Incorporated MMBZ27VALQ-7-F
- Part No.:
- MMBZ27VALQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ27VALQ-7-F.pdf
- Description:
- TVS DIODE 22VWM 40VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
MMBZ27VALQ-7-F from Diodes Incorporated is a dual unidirectional TVS diode in common-anode SOT23 package, rated for 40W peak pulse power (1.0ms), 22V reverse standoff voltage (VRWM), and 40A peak pulse current (IPP), designed to protect automotive signal lines against ESD and transient surges.
For engineers reviewing the MMBZ27VALQ-7-F datasheet, MMBZ27VALQ-7-F pinout, MMBZ27VALQ-7-F application, or MMBZ27VALQ-7-F equivalent, key selection criteria include clamping voltage (VC = 40V @ IPP), temperature coefficient (+0.090%/°C), AEC-Q101 qualification, and SOT23 footprint compatibility with automated PCB assembly.
Technical Context
This dual TVS implements a common-anode configuration, enabling simultaneous protection of two signal paths with shared ground reference. It delivers 40W peak pulse power under 10/1000μs waveform per IEC 61000-4-5, with 225mW steady-state dissipation and thermal resistance RθJA = 556°C/W on FR-4 board.
The device features low leakage (<1.0μA @ VRWM), tight breakdown voltage tolerance (25.65–28.35V @ IT = 1mA), and +0.090%/°C temperature coefficient-ensuring stable clamping across -55°C to +150°C operating range required for under-hood automotive electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 22 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 24V automotive systems. |
| VBR (min/typ/max) | 25.65 / 27.0 / 28.35 V @ 1 mA - Tight 5% tolerance ensures predictable turn-on during transients without false triggering. |
| VC @ IPP | 40 V @ 40 A - Clamping voltage limits downstream IC stress during 10/1000μs surge; critical for protecting CAN/LIN transceivers. |
| PPK | 40 W @ 1.0 ms - Peak pulse power rating validated per IEC 61000-4-5 Level 4; supports robust EMC compliance. |
| IR @ VRWM | <1.0 μA - Ultra-low leakage preserves signal integrity and battery life in always-on vehicle modules. |
| TC of VBR | +0.090 %/°C - Positive temperature coefficient stabilizes breakdown voltage over wide ambient range (-55°C to +150°C). |
Pinout & Package
Package: SOT23 - Surface-mount plastic package (2.90 mm × 1.30 mm × 1.03 mm), RoHS-compliant, halogen-free, moisture sensitivity level 1, weight ≈ 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first protected signal path; connects to line under protection (e.g., CAN_H). |
| Pin 2 | Cathode (Common) | Shared cathode node tied to system ground; enables dual-channel clamping with single return path. |
| Pin 3 | Anode 2 | Input terminal for second protected signal path (e.g., CAN_L); symmetrical layout simplifies PCB routing. |
Key Features
| Feature | Design Value |
|---|---|
| Dual unidirectional TVS in common-anode SOT23 | Enables compact dual-line protection (e.g., differential bus) without discrete component count increase or layout complexity. |
| AEC-Q101 qualified & PPAP capable | Validated for automotive use including engine control, body electronics, and ADAS sensors requiring zero-defect reliability. |
| 40W peak pulse power (1.0ms) | Meets IEC 61000-4-5 Level 4 surge immunity (4kV line-to-ground) for 12V/24V vehicle architectures. |
| Low leakage & tight VBR tolerance | Preserves signal fidelity in high-impedance sensor interfaces while ensuring repeatable clamping onset across production lots. |
Applications
| CAN Bus Protection | LIN Bus Protection |
|---|---|
Use Scenario: Protecting CAN_H and CAN_L differential pair in automotive ECUs against ESD (IEC 61000-4-2) and load dump-induced transients. IC Role / Device Role / Timing Role: Dual-channel transient voltage suppressor providing symmetric clamping at both signal lines referenced to chassis ground. Use Value: Limits VC to 40V during 40A surge, preventing damage to ISO 11898-2 transceivers while maintaining signal integrity below 1 Mbps. | Use Scenario: Safeguarding LIN slave nodes (e.g., door modules, seat controls) from battery voltage spikes and electrostatic discharge. IC Role / Device Role / Timing Role: Unidirectional TVS pair suppressing positive-going transients on LIN bus and wake-up line simultaneously. Use Value: Enables reliable 19.2 kbps communication with <1.0 μA leakage preserving sleep-mode current budget in battery-sensitive applications. |
| Automotive Sensor Interface | Body Control Module I/O Protection |
Use Scenario: Shielding analog sensor inputs (e.g., temperature, pressure) in engine management systems from ignition noise and alternator ripple. IC Role / Device Role / Timing Role: Low-leakage dual TVS placed at connector interface to shunt fast transients before reaching ADC front-end. Use Value: Maintains <1.0 μA IR at 22V VRWM, avoiding DC offset errors in ratiometric sensor measurements over full temperature range. | Use Scenario: Protecting GPIOs and switch inputs in BCMs handling door lock/unlock, lighting, and window control signals. IC Role / Device Role / Timing Role: Common-anode configuration allows single-device protection of multiple 12V-switched inputs sharing ground return. Use Value: Reduces BOM count by 50% vs. discrete TVS solutions while delivering 40W pulse handling for inductive load switching events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-Q | Single-channel SMA package; 400W PPK but larger footprint (4.5×2.7mm); higher RθJA (110°C/W). | Requires two devices for dual-line protection; unsuitable for space-constrained SOT23 layouts. | Select when higher pulse energy handling is needed and board area permits discrete placement. |
| TPD2E001DRYR | Single-chip dual-channel ESD protector (IEC 61000-4-2 only); 30W max PPK; no IEC 61000-4-5 surge rating. | Rated only for ESD (±8kV contact), not for surge; lacks automotive qualification and 40A IPP capability. | Choose only for consumer-grade USB/I²C protection where automotive surge immunity is not required. |
Compared with SMAJ22A-Q and TPD2E001DRYR, MMBZ27VALQ-7-F uniquely combines AEC-Q101 qualification, SOT23 dual-channel integration, and 40W/40A surge capability-making it optimal for cost- and space-sensitive automotive signal line protection where both ESD and surge immunity are mandated.
Availability
MMBZ27VALQ-7-F is available at Aetrix Electronics and suitable for automotive body electronics, CAN/LIN network nodes, and engine control unit I/O protection requiring stable component supply and long-term lifecycle support.
Supply support for MMBZ27VALQ-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, specializing in high-reliability components for automotive, industrial, and computing markets.
The MMBZ27VALQ-7-F belongs to Diodes' AEC-Q101-qualified TVS portfolio, engineered specifically for automotive signal line protection with emphasis on surge immunity, thermal stability, and automated assembly compatibility.
FAQ
What is the maximum clamping voltage of MMBZ27VALQ-7-F during a 40A transient?
The clamping voltage VC is 40 V at 40 A peak pulse current (IPP), measured under 10/1000 μs waveform per IEC 61000-4-5. This value is guaranteed across -55°C to +150°C and ensures downstream ICs remain within safe operating voltage limits during surge events.
Is MMBZ27VALQ-7-F suitable for bidirectional signal lines like RS-485?
No-MMBZ27VALQ-7-F is unidirectional with common-anode configuration, intended for positive-going transients on grounded-signal systems (e.g., CAN, LIN). For bidirectional lines, a dual-bidirectional TVS such as D3V3F4U2LP-7 is required to clamp both polarities.
How does the +0.090%/°C temperature coefficient affect circuit design?
The positive temperature coefficient means VBR increases linearly with junction temperature, raising the clamping threshold at high ambient conditions. Designers must verify that VC remains ≤40 V at maximum TJ (150°C) to maintain protection margin-confirmed in Diodes' DS30306 Rev. 17 data.
Does MMBZ27VALQ-7-F require derating at elevated ambient temperatures?
Yes-steady-state power dissipation derates linearly above +25°C per Figure 5 in DS30306, reaching 0 mW at +150°C. Pulse power also derates per Figure 1: at +125°C ambient, peak pulse power drops to ~65% of 40W. Layout with adequate copper pour is essential for thermal management.
MMBZ27VALQ-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:
- 40V
- Current - Peak Pulse (10/1000µs):
- 1A
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MMBZ27VALQ-7-F FAQ
1.How can I place an order for MMBZ27VALQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ27VALQ-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 MMBZ27VALQ-7-F reliable?
The price and inventory of MMBZ27VALQ-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 MMBZ27VALQ-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ27VALQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ27VALQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ27VALQ-7-F?
MMBZ27VALQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ27VALQ-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 MMBZ27VALQ-7-F?
For technical support, including MMBZ27VALQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ27VALQ-7-F requirements.
6.How does Aetrix verify that MMBZ27VALQ-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ27VALQ-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 MMBZ27VALQ-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ27VALQ-7-F?
All MMBZ27VALQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ27VALQ-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 MMBZ27VALQ-7-F part is unused and in its original packaging.
Return procedure for MMBZ27VALQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ27VALQ-7-F Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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