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Vishay General Semiconductor - Diodes Division P6SMB12AHM3_B/H
- Part No.:
- P6SMB12AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12AHM3_B/H.pdf
- Description:
- 600W,12V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,289
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Product details
Overview
P6SMB12AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 10.2 V stand-off voltage (VWM), 16.7 V maximum clamping voltage at 35.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the P6SMB12AHM3_B/H datasheet, P6SMB12AHM3_B/H pinout, P6SMB12AHM3_B/H application, or P6SMB12AHM3_B/H equivalent, this AEC-Q101 qualified, halogen-free, RoHS-compliant TVS diode supports automotive-grade surge protection design where low clamping voltage, fast response time, and stable thermal performance up to 150 °C junction temperature are required.
Technical Context
This unidirectional TVS operates by avalanche breakdown to limit transient overvoltages before they damage downstream ICs or MOSFETs. Its glass-passivated junction ensures consistent breakdown behavior and low leakage (<5 µA at VWM), while the SMB package provides mechanical robustness and compatibility with automated SMT assembly.
The device delivers 600 W peak pulse power handling under standardized 10/1000 µs waveform conditions, with a typical thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It is rated for repetitive surge duty cycle ≤ 0.01 % and meets MSL Level 1 per J-STD-020 at 260 °C peak reflow temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1 mA - defines precise avalanche initiation threshold for reliable clamping onset |
| VWM | 10.2 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 16.7 V at 35.9 A - clamped voltage during worst-case 600 W transient, limiting stress on protected circuitry |
| IPPM | 35.9 A - peak surge current capability under 10/1000 µs waveform, enabling robust ESD and lightning surge immunity |
| PPPM | 600 W - standardized peak pulse power rating confirming suitability for industrial and automotive transient suppression |
| TJ max | 150 °C - maximum junction temperature allowing operation in under-hood or high-temperature PCB environments |
| RθJA | 100 °C/W - thermal resistance indicating need for adequate copper pad area (0.2" × 0.2") for sustained power dissipation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity marked with cathode band; anode and cathode terminals are axially oriented.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes conduction path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern automotive and industrial electronics |
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) with margin |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during transients, protecting 12 V logic and analog front-ends |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply rails in body control modules against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps transients to ≤16.7 V, preventing damage to 24 V tolerant but 12 V nominal input regulators and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted directly at sensor connector to shunt induced surges before reaching signal conditioning circuitry. Use Value: Limits voltage excursion to <17 V during 1 kV/µs fast transients, preserving ADC reference integrity and op-amp input stages. |
| Telecom Power Feeding Protection | Consumer USB Power Delivery Port |
|
Use Scenario: Securing PoE-powered devices (e.g., IP cameras) against Ethernet cable-induced surges and cross-talk coupling. IC Role / Device Role / Timing Role: TVS installed on DC input side of PoE interface IC, upstream of hot-swap controller. Use Value: Absorbs 600 W pulses without degradation, maintaining safe operation across extended temperature range (-65 °C to +150 °C). |
Use Scenario: Adding secondary overvoltage protection on VBUS line of USB-C PD ports in portable monitors or docking stations. IC Role / Device Role / Timing Role: Standby clamping device parallel to primary OVP IC, activated only during extreme surge events. Use Value: Provides fail-safe clamping at 16.7 V, ensuring no overvoltage reaches USB PD controller or Type-C port multiplexer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12AHE3_A/H | Same VWM (10.2 V), slightly higher VC (19.9 V at 30.1 A), SMA package (smaller footprint, higher RθJA) | Lower power density; suitable for space-constrained consumer designs with moderate surge exposure | Select when board area is critical and peak surge energy is ≤400 W; verify thermal derating for continuous operation |
| 1.5SMC12AH | Same electrical specs, but SMC (DO-214AB) package - larger body, lower RθJA (70 °C/W), higher IFSM (200 A) | Better thermal performance and surge endurance; used in high-reliability industrial power supplies | Choose for applications requiring >600 W burst tolerance or extended thermal cycling life; requires larger PCB real estate |
Compared with P6SMB12AHM3_B/H, SMAJ12AHE3_A/H trades clamping performance for compactness, while 1.5SMC12AH offers superior thermal and surge robustness at the cost of footprint size - selection depends on layout constraints, thermal environment, and surge severity profile.
Availability
P6SMB12AHM3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power interfaces, and USB-C PD systems requiring stable component supply with AEC-Q101 assurance and halogen-free compliance.
Supply support for P6SMB12AHM3_B/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and automotive qualification.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and communications equipment, delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 validation.
FAQ
What is the clamping voltage of P6SMB12AHM3_B/H under maximum surge conditions?
The P6SMB12AHM3_B/H has a maximum clamping voltage (VC) of 16.7 V at its rated peak pulse current (IPPM) of 35.9 A, measured using the standard 10/1000 µs waveform. This value ensures protected circuits experience minimal overvoltage during transient events, making P6SMB12AHM3_B/H suitable for safeguarding 12 V nominal systems such as automotive body electronics and industrial controllers.
Is P6SMB12AHM3_B/H qualified for automotive use?
Yes, P6SMB12AHM3_B/H is AEC-Q101 qualified, as indicated by the "HM3" and "_B/H" suffixes - denoting halogen-free, RoHS-compliant construction and automotive-grade reliability testing. This qualification confirms P6SMB12AHM3_B/H meets stress test requirements for temperature cycling, humidity bias, and surge endurance in automotive environments, including under-hood applications.
What is the standoff voltage rating for P6SMB12AHM3_B/H?
The standoff voltage (VWM) for P6SMB12AHM3_B/H is 10.2 V, representing the maximum DC or continuous reverse voltage that can be applied without exceeding the specified reverse leakage current (≤5 µA). This rating allows P6SMB12AHM3_B/H to operate reliably on 12 V supply rails while remaining non-conductive during normal operation - a key parameter for ensuring low power loss and signal integrity.
Does P6SMB12AHM3_B/H have a bidirectional variant?
No, P6SMB12AHM3_B/H is a unidirectional TVS diode, as confirmed by its part number suffix "A" and the presence of a cathode band marking. Bidirectional variants in the same series use the "CA" suffix (e.g., P6SMB12CA). The unidirectional configuration of P6SMB12AHM3_B/H makes it appropriate for DC power line protection where polarity is fixed and reverse conduction must be blocked.
What package type does P6SMB12AHM3_B/H use, and what are its mounting requirements?
P6SMB12AHM3_B/H uses the SMB (DO-214AA) surface-mount package, with recommended copper pad dimensions of 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal to ensure proper thermal dissipation and mechanical reliability. The device is MSL Level 1 rated, supporting standard reflow profiles up to 260 °C peak without preconditioning, and features matte tin-plated leads compliant with J-STD-002 solderability standards.
P6SMB12AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 35.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB12AHM3_B/H FAQ
1.How can I place an order for P6SMB12AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12AHM3_B/H 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 P6SMB12AHM3_B/H reliable?
The price and inventory of P6SMB12AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB12AHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB12AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12AHM3_B/H?
P6SMB12AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12AHM3_B/H 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 P6SMB12AHM3_B/H?
For technical support, including P6SMB12AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB12AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB12AHM3_B/H 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 P6SMB12AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB12AHM3_B/H?
All P6SMB12AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12AHM3_B/H, 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 P6SMB12AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB12AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB12AHM3_B/H Tags
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