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Vishay General Semiconductor - Diodes Division P6SMB36AHE3_B/I
- Part No.:
- P6SMB36AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB36AHE3_B/I.pdf
- Description:
- 600W,36V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,490
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Product details
Overview
P6SMB36AHE3_B/I 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 36 V standoff voltage (VWM), 49.9 V maximum clamping voltage at 12.0 A peak pulse current, and 600 W peak pulse power capability with 10/1000 μs waveform - deployed in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the P6SMB36AHE3_B/I datasheet, P6SMB36AHE3_B/I pinout, P6SMB36AHE3_B/I application, or P6SMB36AHE3_B/I equivalent, this AEC-Q101 qualified TVS offers validated surge immunity for 12 V and 24 V automotive subsystems, robust ESD/inductive switching transient suppression, and RoHS-compliant matte tin-plated terminals compatible with J-STD-002 soldering standards.
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 34.2–37.8 V breakdown range (VBR at 1 mA). Its low incremental surge resistance ensures stable clamping under repetitive 0.01% duty cycle pulses, while glass-passivated junction enhances reliability across -65 °C to +150 °C operating temperature.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads per terminal, it meets MSL Level 1 per J-STD-020 (peak reflow 260 °C) and delivers 100 °C/W junction-to-ambient thermal resistance. The cathode band marking enables unambiguous polarity identification during automated placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 34.2–37.8 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on behavior under transient overvoltage. |
| VC (Clamping Voltage) | 49.9 V at 12.0 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress level. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capacity under standardized 10/1000 μs waveform; validates protection against common load-switching transients. |
| ID (Reverse Leakage) | 1.0 μA max at 30.8 V - Minimal standby current leakage; preserves low-power system integrity and battery life. |
| TJ max | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and high-temperature industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode identified by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; establishes reference for unidirectional clamping action. |
| Cathode | Clamping output / Surge current sink | Connected to higher-potential rail (e.g., VCC or signal line); conducts surge current to ground path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables reliable suppression of high-energy transients from relay coil decay or motor commutation without degradation. |
| Glass passivated chip junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for automotive under-hood use. |
| AEC-Q101 qualification (HE3 suffix) | Confirms compliance with automotive stress testing protocols including HTOL, TC, and HAST - required for Tier-1 supply chain acceptance. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT reflow profiles without preconditioning, reducing manufacturing complexity and cost. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), enhancing protection fidelity for sensitive ICs. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and LIN bus transceivers from load-dump and jump-start surges in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between input pin and chassis ground. Use Value: Limits transient voltage to ≤49.9 V during 12 V system load dump (ISO 7637-2 Pulse 5a), preventing latch-up or permanent damage to 5 V tolerant interfaces. |
Use Scenario: Shields 24 V DC digital input circuitry from inductive kickback generated by solenoid valves and contactors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side input node, upstream of optocoupler or Schmitt trigger. Use Value: Absorbs up to 600 W surge energy without failure, maintaining signal integrity and enabling >100,000 switching cycles per input channel. |
| Automotive Cabin Sensor Hub | Telecom Power Supply Front-End |
|
Use Scenario: Safeguards I²C and analog sensor lines (e.g., temperature, humidity) connected to HVAC control units against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on bidirectional data lines with minimal signal distortion. Use Value: Delivers <1.0 μA leakage at 30.8 V, preserving sensor accuracy and enabling sub-μA sleep-mode current budgets. |
Use Scenario: Guards AC-DC adapter secondary-side 48 V output rails against lightning-induced surges entering via Ethernet or PoE interfaces. IC Role / Device Role / Timing Role: Secondary-stage clamping device after primary MOV/GDT, refining voltage limiting precision. Use Value: Provides tighter clamping (49.9 V) than bulkier MOVs, reducing stress on downstream DC-DC converters and LDOs. |
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 rated for 400 W PPPM (vs. 600 W) and not AEC-Q101 qualified. | Limited to commercial-grade industrial or consumer equipment where automotive qualification is unnecessary. | Select when cost sensitivity outweighs automotive reliability requirements and surge energy remains ≤400 W. |
| 1.5SMC36A | Higher package thermal resistance (RθJA = 125 °C/W vs. 100 °C/W), same 600 W rating, but no AEC-Q101 validation or HE3 suffix. | Suitable for non-automotive applications with less stringent thermal or qualification demands. | Choose only if existing PCB layout uses SMC footprint and thermal margin allows higher junction temperature rise. |
Compared with SMAJ36A-E3/5B and 1.5SMC36A, P6SMB36AHE3_B/I delivers superior automotive-grade reliability, higher surge energy handling, and lower thermal resistance - making it the preferred choice for safety-critical 12 V/24 V vehicle subsystems requiring zero field failures.
Availability
P6SMB36AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB36AHE3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-qualified solutions.
The P6SMB Series targets robust transient suppression in harsh environments, with design focus on AEC-Q101 compliance, low-profile SMT compatibility, and consistent clamping performance across wide temperature ranges.
FAQ
What is the clamping voltage of P6SMB36AHE3_B/I at its rated peak pulse current?
The P6SMB36AHE3_B/I has a maximum clamping voltage (VC) of 49.9 V at 12.0 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB36AHE3_B/I maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C), ensuring consistent protection in automotive and industrial deployments.
Is P6SMB36AHE3_B/I qualified for automotive applications?
Yes, P6SMB36AHE3_B/I is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's P6SMB series datasheet (Rev. 09-Jan-2024, Doc. #88370). This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. The P6SMB36AHE3_B/I is approved for use in automotive body electronics, infotainment interfaces, and sensor modules where reliability under vibration, thermal cycling, and electrical transients is mandatory.
What does the "_B/I" suffix indicate in P6SMB36AHE3_B/I?
The "_B" in P6SMB36AHE3_B/I denotes AEC-Q101 qualification for the P6SMB36AHE3 variant, while "/I" specifies packaging in 13-inch diameter plastic tape and reel containing 3200 units. This format aligns with Vishay's ordering nomenclature where "/I" indicates high-volume reel packaging optimized for automated SMT placement. The P6SMB36AHE3_B/I thus combines automotive-grade reliability with production-ready packaging for high-throughput manufacturing environments.
How does P6SMB36AHE3_B/I compare to bidirectional TVS diodes like P6SMB36CA?
P6SMB36AHE3_B/I is unidirectional and intended for DC line protection where polarity is fixed (e.g., 12 V supply rails), offering lower leakage (<1.0 μA at 30.8 V) and sharper breakdown knee. In contrast, P6SMB36CA is bidirectional and suited for AC or symmetrical signal lines (e.g., RS-485), with doubled ID limit per datasheet note (3). The P6SMB36AHE3_B/I cannot replace P6SMB36CA in AC applications due to asymmetric conduction - selecting the correct polarity version is essential for functional correctness and reliability.
What is the thermal resistance of P6SMB36AHE3_B/I, and how does it affect layout design?
P6SMB36AHE3_B/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 specified in the Vishay datasheet. This value requires PCB designers to allocate adequate copper area and consider airflow or ambient temperature limits to prevent junction temperatures exceeding +150 °C during repetitive surge events. The P6SMB36AHE3_B/I's RθJA directly impacts sustained power dissipation capability and must be verified in final thermal simulation for automotive under-hood or enclosed industrial enclosures.
P6SMB36AHE3_B/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:
- Active
- 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)
P6SMB36AHE3_B/I FAQ
1.How can I place an order for P6SMB36AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB36AHE3_B/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 P6SMB36AHE3_B/I reliable?
The price and inventory of P6SMB36AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB36AHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB36AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB36AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB36AHE3_B/I?
P6SMB36AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB36AHE3_B/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 P6SMB36AHE3_B/I?
For technical support, including P6SMB36AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB36AHE3_B/I requirements.
6.How does Aetrix verify that P6SMB36AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB36AHE3_B/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 P6SMB36AHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB36AHE3_B/I?
All P6SMB36AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB36AHE3_B/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 P6SMB36AHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB36AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB36AHE3_B/I Tags
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