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Vishay General Semiconductor - Diodes Division P6SMB18AHE3_A/H
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- Part No.:
- P6SMB18AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB18AHE3_A/H.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,105
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Product details
Overview
P6SMB18AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 15.3 V stand-off voltage (VWM), 17.1–18.9 V breakdown voltage (VBR) at 1 mA test current, 25.2 V maximum clamping voltage at 23.8 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power rails.
For engineers reviewing the P6SMB18AHE3_A/H datasheet, P6SMB18AHE3_A/H pinout, P6SMB18AHE3_A/H application, or P6SMB18AHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, unidirectional polarity with cathode band marking, low incremental surge resistance, and compliance with J-STD-020 MSL level 1 (260 °C reflow).
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuitry, conducting only when reverse voltage exceeds VBR to divert transient energy away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device is rated for 100 A non-repetitive forward surge current (IFSM), supports operation from −65 °C to +150 °C junction temperature, and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads - requiring careful PCB thermal design for sustained power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 15.3 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 17.1–18.9 V at 1 mA - Confirmed breakdown range where device transitions from high-impedance to low-impedance conduction |
| VC (Clamping) | 25.2 V at 23.8 A - Peak voltage seen across protected circuit during 10/1000 μs transient; determines maximum stress on downstream ICs |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; defines transient energy absorption capacity per event |
| ID (Leakage) | 1.0 μA max at VWM - Low reverse leakage preserves system efficiency and prevents false triggering in low-power circuits |
| TJ max | +150 °C - Maximum junction temperature rating enabling use in under-hood automotive and high-temperature industrial environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or lower-potential rail; completes clamping loop during overvoltage events |
| Cathode | Reverse-biased terminal / transient input node | Marked with band; connects to protected line (e.g., 12 V supply or CAN bus); conducts when Vin > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without derating in standard layouts |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero-defect reliability and extended temperature operation |
| Glass passivated junction | Ensures stable VBR tolerance and low parameter drift over time and temperature, critical for long-life industrial deployments |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow profiles without preconditioning, reducing manufacturing complexity and cost |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage exposure to protected ICs - e.g., keeps 3.3 V or 5 V logic within safe absolute maximum ratings |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and inductive switching transients in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 15.3 V. Use Value: Limits peak voltage to 25.2 V during 10/1000 μs surges, preventing damage to MCU power supplies and CAN transceivers. |
Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Clamping device on sensor signal line (e.g., 4–20 mA loop or 0–10 V output) referenced to local ground. Use Value: Suppresses ESD and fast transients up to ±15 kV contact discharge while maintaining sub-μA leakage at 15.3 V. |
| Telecom DC Power Input Protection | Consumer Device USB Power Line Protection |
Use Scenario: Securing −48 V telecom rectifier outputs against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Reverse-connected unidirectional TVS on negative rail to clamp positive-going transients relative to ground. Use Value: Withstands 600 W pulses and maintains <1 μA leakage at −15.3 V, preserving efficiency in always-on systems. |
Use Scenario: Adding secondary overvoltage protection on VBUS lines of USB-C ports in portable audio devices. IC Role / Device Role / Timing Role: Stand-off-rated clamping element between VBUS and GND, activated only during fault conditions. Use Value: Clamps VBUS to ≤25.2 V during 10/1000 μs surges, preventing latch-up or gate oxide rupture in USB PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A-E3/5B | Same VWM (15.3 V), identical SMB package, but rated for 400 W PPPM (vs. 600 W) and lacks AEC-Q101 qualification | Not suitable for automotive or high-energy industrial surge environments requiring full 600 W compliance | Select P6SMB18AHE3_A/H when 600 W clamping and AEC-Q101 validation are mandatory |
| 1.5SMC18A | Same electrical specs (VWM/VBR/VC), but in larger SMC (DO-214AB) package with higher thermal mass and RθJA = 50 °C/W | Better suited for high-duty-cycle or continuous power dissipation scenarios where SMB thermal limits may be exceeded | Choose 1.5SMC18A only if board layout allows larger footprint and thermal performance outweighs space constraints |
Compared with SMAJ18A-E3/5B and 1.5SMC18A, P6SMB18AHE3_A/H uniquely delivers 600 W surge capability in an AEC-Q101-qualified SMB package - making it optimal for space-constrained automotive and industrial designs needing validated reliability and high-energy clamping without footprint penalty.
Availability
P6SMB18AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, AEC-Q101 traceability, and consistent 600 W clamping performance.
Supply support for P6SMB18AHE3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure - engineered for robustness under repetitive surge stress, AEC-Q101 compliance, and compatibility with automated SMT assembly.
FAQ
What is the clamping voltage of P6SMB18AHE3_A/H at its rated peak pulse current?
The P6SMB18AHE3_A/H has a maximum clamping voltage (VC) of 25.2 V at its specified peak pulse current (IPPM) of 23.8 A with a 10/1000 μs waveform. This value is measured under standardized test conditions per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB18AHE3_A/H maintains this clamping performance across its qualified temperature range and after multiple surge cycles when operated within datasheet limits.
Is P6SMB18AHE3_A/H suitable for automotive applications?
Yes, P6SMB18AHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix and documented in Vishay's official specification (Document Number: 88370, Revision: 09-Jan-2024). It undergoes rigorous stress testing for temperature cycling, humidity bias, and mechanical shock - making it suitable for under-hood and body electronics applications. The P6SMB18AHE3_A/H also meets MSL Level 1 reflow requirements, supporting standard automotive PCB assembly processes.
How does the P6SMB18AHE3_A/H differ from bidirectional variants like P6SMB18CA?
The P6SMB18AHE3_A/H is unidirectional, with polarity marked by a cathode band and intended for DC line protection where transients occur primarily in one polarity (e.g., 12 V supply rails). In contrast, P6SMB18CA is bidirectional and symmetrical, used in AC-coupled or differential signal lines like RS-485 or CAN. The P6SMB18AHE3_A/H has no reverse breakdown specification - its forward conduction is not rated for surge handling, unlike the bidirectional version which clamps equally in both directions.
What is the maximum operating junction temperature for P6SMB18AHE3_A/H?
The P6SMB18AHE3_A/H has a maximum junction temperature (TJ max) of +150 °C, as specified in the Absolute Maximum Ratings table of its datasheet. This rating enables reliable operation in high-temperature environments such as engine compartments or enclosed industrial enclosures. Derating curves in Figure 2 show that peak pulse power must be reduced above TA = 25 °C, and thermal design using minimum recommended 0.2" × 0.2" copper pads is essential to maintain the P6SMB18AHE3_A/H within safe thermal limits.
Does P6SMB18AHE3_A/H require special PCB layout considerations?
Yes, P6SMB18AHE3_A/H requires adherence to Vishay's recommended mounting pad layout (0.086" × 0.060" minimum, 0.085" × 0.060" maximum per footprint drawing) to ensure proper thermal dissipation and mechanical reliability. Traces to the P6SMB18AHE3_A/H should be short and wide to minimize inductance during surge events, and copper pour on both sides of the PCB improves heat spreading. Failure to follow these guidelines risks exceeding thermal resistance (RθJA = 100 °C/W) and premature failure under repeated 600 W pulses.
P6SMB18AHE3_A/H 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 23.8A
- 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)
P6SMB18AHE3_A/H FAQ
1.How can I place an order for P6SMB18AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB18AHE3_A/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 P6SMB18AHE3_A/H reliable?
The price and inventory of P6SMB18AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB18AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB18AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB18AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB18AHE3_A/H?
P6SMB18AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB18AHE3_A/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 P6SMB18AHE3_A/H?
For technical support, including P6SMB18AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB18AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB18AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB18AHE3_A/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 P6SMB18AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB18AHE3_A/H?
All P6SMB18AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB18AHE3_A/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 P6SMB18AHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB18AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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