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Vishay General Semiconductor - Diodes Division P6SMB12AHE3/52
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- Part No.:
- P6SMB12AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12AHE3/52.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,525
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Product details
Overview
P6SMB12AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 16.7 V maximum clamping voltage (VC) at 35.9 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients in industrial and automotive electronics.
For engineers reviewing the P6SMB12AHE3/52 datasheet, P6SMB12AHE3/52 pinout, P6SMB12AHE3/52 application, or P6SMB12AHE3/52 equivalent, key selection criteria include its AEC-Q101 qualification, 10.2 V stand-off voltage (VWM), <5.0 μA reverse leakage at VWM, low thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche behavior under repetitive surge conditions. Its 10/1000 μs waveform rating reflects standardized lightning and ESD transient immunity testing per IEC 61000-4-5.
The device features MSL Level 1 moisture sensitivity, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets UL 94 V-0 flammability requirements in its SMB molding compound - enabling reliable reflow soldering at peak temperatures up to 260 °C without delamination or whisker formation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1 mA test current - defines precise avalanche onset threshold for predictable clamping initiation |
| 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 downstream stress |
| IPPM | 35.9 A - peak surge current capability with 10/1000 μs waveform, derated above 25 °C ambient |
| PPPM | 600 W - standardized peak pulse power handling per REA-defined waveform, supporting industrial-grade surge immunity |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive and high-temperature industrial environments |
| RθJL | 20 °C/W - low junction-to-lead thermal resistance supports efficient heat transfer to PCB copper pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads; cathode identified by a single band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to circuit ground or lower-potential node in unidirectional protection configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., I/O, power rail); band-marked end accepts transient surge into ground path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring long-term reliability under thermal cycling and vibration |
| Glass passivated junction | Ensures stable VBR tolerance and low parameter drift over lifetime, critical for consistent clamping performance in safety-critical systems |
| MSL Level 1 rating | Enables direct placement and reflow without baking, reducing manufacturing cost and process complexity for high-volume SMT lines |
| 600 W peak pulse power | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3/4 surges without degradation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive CMOS inputs |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kickback in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between signal line and chassis ground, activated within <1 ns of overvoltage event. Use Value: Limits transient voltage to ≤16.7 V, preventing damage to 5 V or 3.3 V interface ICs while maintaining signal integrity during normal operation. | Use Scenario: Shielding digital input modules in programmable logic controllers from relay coil flyback and motor drive noise in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff protector on 24 V DC input lines, absorbing repetitive 600 W surges without parameter shift over >100,000 cycles. Use Value: Eliminates need for external series impedance or RC snubbers, simplifying board layout and reducing BOM count while meeting IEC 61000-4-4 EFT immunity. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Safeguarding primary-side controller ICs and rectifier bridges in AC/DC adapters subjected to mains-borne surges and lightning-induced spikes. IC Role / Device Role / Timing Role: Primary-stage clamping device across bulk capacitor or bridge output, triggered only during overvoltage events exceeding 10.2 V. Use Value: Withstands 100 A non-repetitive forward surge (IFSM), ensuring survival during brownout recovery and hot-plug events. | Use Scenario: Front-end protection for Ethernet PHYs and PoE injectors in network switches exposed to induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part used on DC bias rails (e.g., +48 V PoE supply) with explicit polarity orientation. Use Value: Achieves <5.0 μA leakage at 10.2 V, minimizing standby power loss while delivering 600 W transient absorption per IEEE 802.3bt compliance testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/52 | Same SMB package, identical VBR range (11.4–12.6 V), but rated for 400 W PPPM and higher VC (20.1 V) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 compliance where 600 W is required | Select P6SMB12AHE3/52 when full 600 W surge margin is needed; SMAJ12A-E3/52 may be chosen for cost-sensitive, lower-risk consumer applications |
| 1.5SMC12A | Same electrical specs but in larger SMC (DO-214AB) package; 1.5x footprint area and 2.5x thermal mass | Requires PCB redesign due to larger pad layout; better suited for high-temperature ambient (>85 °C) or high-reliability aerospace use | Choose P6SMB12AHE3/52 for space-constrained designs and automated placement; 1.5SMC12A only if enhanced thermal dissipation or legacy footprint compatibility is mandatory |
Compared with SMAJ12A-E3/52 and 1.5SMC12A, P6SMB12AHE3/52 delivers optimal balance of 600 W surge capacity, AEC-Q101 qualification, and compact SMB footprint - making it the preferred choice for automotive and industrial SMT designs where board area, reliability, and standardized surge compliance are jointly prioritized.
Availability
P6SMB12AHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power supply protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for P6SMB12AHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is designed specifically for robust transient voltage suppression in automotive, industrial, and telecom systems - combining high-power surge handling, AEC-Q101 qualification, and surface-mount scalability for automated manufacturing.
FAQ
What is the clamping voltage of the P6SMB12AHE3/52 under maximum surge conditions?
The P6SMB12AHE3/52 has a maximum clamping voltage (VC) of 16.7 V at its rated peak pulse current of 35.9 A using the 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads) and ensures downstream ICs see no more than 16.7 V during worst-case transient events. The P6SMB12AHE3/52 maintains this clamping performance across its qualified operating temperature range.
Is the P6SMB12AHE3/52 suitable for automotive applications?
Yes, the P6SMB12AHE3/52 is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It meets stringent requirements for thermal cycling, mechanical shock, and long-term reliability in engine control, body electronics, and ADAS sensor modules. The P6SMB12AHE3/52 is rated for TJ up to +150 °C and complies with JESD201 Class 2 whisker resistance, confirming suitability for under-hood and cabin-mounted systems.
What does the "HE3" suffix indicate in P6SMB12AHE3/52?
The "HE3" suffix in P6SMB12AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability standards. It distinguishes this grade from commercial-only "E3" variants and confirms compliance with automotive reliability and environmental requirements. The P6SMB12AHE3/52 is not merely drop-in compatible - its HE3 designation certifies full qualification for automotive production use.
How does the P6SMB12AHE3/52 compare to bidirectional TVS diodes like P6SMB12CA?
The P6SMB12AHE3/52 is unidirectional and features a cathode band for polarity-sensitive placement, whereas P6SMB12CA is bidirectional with no polarity marking and symmetric clamping in both directions. The P6SMB12AHE3/52 offers lower leakage (<5.0 μA at 10.2 V) and is optimized for DC rail or signal-line protection with defined ground reference; P6SMB12CA suits AC-coupled or floating lines where polarity reversal may occur.
What is the thermal resistance specification for the P6SMB12AHE3/52?
The P6SMB12AHE3/52 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, measured under standard mounting conditions. This enables efficient heat transfer from the silicon die to the PCB copper pads during surge events, supporting sustained reliability in high-temperature environments. The P6SMB12AHE3/52 also exhibits RθJA = 100 °C/W (junction-to-ambient), confirming effective thermal design when used with recommended 5.0 mm × 5.0 mm pad areas.
P6SMB12AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB12AHE3/52 FAQ
1.How can I place an order for P6SMB12AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12AHE3/52 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 P6SMB12AHE3/52 reliable?
The price and inventory of P6SMB12AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB12AHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB12AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12AHE3/52?
P6SMB12AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12AHE3/52 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 P6SMB12AHE3/52?
For technical support, including P6SMB12AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12AHE3/52 requirements.
6.How does Aetrix verify that P6SMB12AHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB12AHE3/52 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 P6SMB12AHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB12AHE3/52?
All P6SMB12AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12AHE3/52, 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 P6SMB12AHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB12AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB12AHE3/52 Tags
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