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Vishay General Semiconductor - Diodes Division P6SMB36AHM3/I
- Part No.:
- P6SMB36AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB36AHM3/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,550
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Product details
Overview
P6SMB36AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for robust overvoltage protection of sensitive electronics. It features a 30.8 V stand-off voltage (VWM), 34.2–37.8 V breakdown voltage (VBR) at 1 mA test current, and clamps transients to ≤49.9 V at 12.0 A peak pulse current (IPPM) under 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the P6SMB36AHM3/I datasheet, P6SMB36AHM3/I pinout, P6SMB36AHM3/I application, or P6SMB36AHM3/I equivalent, this device is evaluated for high-reliability transient suppression in AEC-Q101-qualified systems, with verified thermal resistance (RθJA = 100 °C/W), halogen-free RoHS compliance, and SMB (DO-214AA) package compatibility for automated SMT assembly.
Technical Context
This unidirectional TVS diode operates as a clamping device that conducts above its breakdown threshold to divert surge energy away from protected circuitry. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1 ns), while the low incremental surge resistance enables effective voltage limiting during 600 W peak pulse events.
The P6SMB36AHM3/I is rated for 150 °C maximum junction temperature and supports repetitive surge duty cycles up to 0.01 %, with derating applied above 25 °C ambient per Figure 2. Its cathode-band polarity marking aligns with standard SMB layout conventions and supports direct integration into DC power input stages and I/O protection networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30.8 V - Maximum continuous reverse voltage before conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown) | 34.2–37.8 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | ≤49.9 V at IPPM = 12.0 A (10/1000 μs) - Actual voltage seen by protected IC during worst-case surge; critical for downstream component survival. |
| PPPM | 600 W - Peak pulse power handling capability; determines survivability against lightning-induced or inductive-switching surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; informs PCB copper pad sizing (0.2" × 0.2") for thermal management. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports protection of rectifier or MOSFET gate drive paths. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or industrial enclosures without derating. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line (e.g., +12 V rail); conducts avalanche current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and body electronics. |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients from load dump or relay switching without degradation - eliminates need for external series impedance in many designs. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream components - e.g., protects 3.3 V or 5 V logic inputs when placed on supply lines. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental regulations and JESD201 Class 2 whisker resistance - suitable for consumer, medical, and industrial production. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking - reduces manufacturing cost and avoids moisture-related popcorning defects. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 12 V power inputs in engine control units (ECUs) against ISO 7637-2 load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤49.9 V, preventing damage to upstream regulators and enabling compliance with automotive EMC requirements. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across signal and ground to shunt fast transients before reaching ADC or op-amp inputs. Use Value: Sub-1 ns response ensures clamping occurs before sensitive analog front-end components experience overstress. |
| Telecom DC Power Feeding | Consumer USB Port Overvoltage Defense |
|
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC feeding lines. IC Role / Device Role / Timing Role: Primary TVS on DC input stage, coordinated with secondary MOV or GDT for staged surge handling. Use Value: 600 W rating handles multi-kV transients while maintaining low leakage (<1 μA) during normal operation. |
Use Scenario: Preventing damage to USB-C controller ICs and Type-C port multiplexers from accidental 20 V adapter misconnection or hot-plug spikes. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line, positioned upstream of USB PD controller and load switch. Use Value: 30.8 V stand-off allows safe operation with 5–20 V USB PD profiles while clamping >34 V faults to protect silicon. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5B | Same VWM (30.8 V), identical SMB package, but lower PPPM = 400 W and non-AEC-Q101 rated. | Limited to commercial-grade industrial or consumer use; not qualified for automotive under-hood environments. | Select when cost sensitivity outweighs automotive qualification and 400 W surge margin suffices. |
| 1.5SMC36AHE3_A/H | Higher PPPM = 1500 W, same VWM/VBR, but larger SMC (DO-214AB) package - 2.5× footprint area. | Requires PCB redesign due to larger pad layout; suited for higher-energy surge zones like main power entry. | Choose only if system-level surge testing exceeds 600 W and board space permits SMC footprint. |
Compared with SMAJ36A-E3/5B, P6SMB36AHM3/I delivers automotive-grade reliability and 50 % higher surge power handling; versus 1.5SMC36AHE3_A/H, it offers identical electrical performance in a 40 % smaller SMB footprint - optimizing space-constrained ECU and sensor module layouts.
Availability
P6SMB36AHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power feeding requiring stable component supply with halogen-free, AEC-Q101-qualified assurance.
Supply support for P6SMB36AHM3/I 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-volume, high-reliability transient suppression in automotive, industrial, and communications systems - engineered for robustness under harsh thermal and electrical stress conditions.
FAQ
What is the clamping voltage of P6SMB36AHM3/I at its rated peak pulse current?
The P6SMB36AHM3/I clamps to a maximum of 49.9 V when subjected to its specified 12.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured and guaranteed per Vishay's datasheet (Document Number: 88370, Rev. 09-Jan-2024), and represents the upper limit of voltage imposed on protected circuitry during surge events - a key parameter for ensuring downstream ICs remain within absolute maximum ratings.
Is P6SMB36AHM3/I qualified for automotive applications?
Yes, P6SMB36AHM3/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in the Vishay P6SMB datasheet. The "HM3" designation indicates halogen-free, RoHS-compliant construction with full AEC-Q101 stress testing - including temperature cycling, high-temperature reverse bias (HTRB), and ESD - making it suitable for under-hood and chassis-mounted automotive modules such as body controllers and ADAS sensor nodes.
What does the "I" suffix in P6SMB36AHM3/I signify?
The "I" suffix in P6SMB36AHM3/I denotes tape-and-reel packaging in 13-inch diameter reels containing 3200 units, per Vishay's ordering information table. This format supports high-speed automated pick-and-place assembly and is distinct from the "H" suffix (7-inch reel, 750 units). The "HM3" portion confirms halogen-free, RoHS-compliant, AEC-Q101-qualified construction - all verified in Document Number 88370.
How does P6SMB36AHM3/I differ from bidirectional variants like P6SMB36CA?
P6SMB36AHM3/I is unidirectional, with polarity marked by a cathode band and intended for DC line protection where current flows in one direction - e.g., +12 V inputs. In contrast, P6SMB36CA is bidirectional, has no polarity marking, and suppresses transients on AC or floating lines (e.g., data pairs). Their VWM and VBR values differ: P6SMB36AHM3/I specifies 30.8 V / 34.2–37.8 V, while P6SMB36CA lists 22.0 V / 24.0–26.4 V - confirming they are not interchangeable without circuit review.
What is the thermal resistance and recommended PCB layout for P6SMB36AHM3/I?
P6SMB36AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as defined in the Vishay datasheet. This layout is mandatory to achieve rated power dissipation and avoid thermal runaway during repetitive surge events. Smaller pads increase RθJA, reducing safe operating area - so PCB design must strictly follow the mounting pad dimensions shown in the DO-214AA outline drawing.
P6SMB36AHM3/I 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
P6SMB36AHM3/I FAQ
1.How can I place an order for P6SMB36AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB36AHM3/I 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 P6SMB36AHM3/I reliable?
The price and inventory of P6SMB36AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB36AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB36AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB36AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB36AHM3/I?
P6SMB36AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB36AHM3/I 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 P6SMB36AHM3/I?
For technical support, including P6SMB36AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB36AHM3/I requirements.
6.How does Aetrix verify that P6SMB36AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB36AHM3/I 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 P6SMB36AHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB36AHM3/I?
All P6SMB36AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB36AHM3/I, 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 P6SMB36AHM3/I part is unused and in its original packaging.
Return procedure for P6SMB36AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB36AHM3/I Tags
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