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Vishay General Semiconductor - Diodes Division P6SMB18CAHE3/52
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- Part No.:
- P6SMB18CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB18CAHE3/52.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,563
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Product details
Overview
P6SMB18CAHE3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal and power 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 (VC) at 23.8 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB18CAHE3/52 datasheet, P6SMB18CAHE3/52 pinout, P6SMB18CAHE3/52 application, or P6SMB18CAHE3/52 equivalent, key selection considerations include bidirectional clamping symmetry, AEC-Q101 qualification for automotive use, SMB (DO-214AA) package compatibility with automated SMT placement, and thermal resistance (RθJA = 100 °C/W) under standard PCB pad layout.
Technical Context
The P6SMB18CAHE3/52 operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while its low incremental surge resistance enables rapid energy diversion during ESD or inductive switching events.
Designed for repetitive surge duty cycles up to 0.01 %, it delivers consistent clamping performance across -65 °C to +150 °C operating junction temperature. The device meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements, supporting lead-free reflow soldering at peak temperatures up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15.3 V - Maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 17.1–18.9 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 25.2 V at IPPM = 23.8 A - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for downstream component survivability. |
| PPPM (Peak Pulse Power) | 600 W - Energy-handling capacity under standardized 10/1000 μs waveform; supports robust protection against IEC 61000-4-5 surges. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables reliable operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Low-profile SMT package with 5.0 mm × 5.0 mm copper pad footprint; optimized for automated assembly and thermal dissipation. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability per stress test requirements including HTOL, TCT, and ESD; designated by HE3 suffix. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band marking required for CA-type devices. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against high-energy surges such as lightning-induced transients and inductive load switching spikes in industrial controls. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces requiring long-term reliability. |
| Low-profile SMB (DO-214AA) package | Reduces board space and supports high-density layouts while maintaining thermal performance via standardized 5.0 mm × 5.0 mm copper pads. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 μA at VWM), critical for low-power sensor and battery-operated system integrity. |
| MSL Level 1, 260 °C reflow compatible | Eliminates moisture sensitivity concerns and supports single-pass lead-free reflow without pre-baking, streamlining manufacturing. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface or IC input pins to limit transient voltage excursions. Use Value: Maintains signal integrity during 12 V/24 V system load dump events (ISO 7637-2 Pulse 5a) while meeting AEC-Q101 lifetime requirements. |
Use Scenario: Safeguarding digital and analog I/O channels of programmable logic controllers against field wiring surges and ground bounce. IC Role / Device Role / Timing Role: Primary transient suppression device on backplane and terminal block interfaces, shunting surge energy before reaching FPGA or microcontroller GPIOs. Use Value: Clamps 600 W surges to ≤25.2 V, preventing latch-up or permanent damage to 3.3 V/5 V logic-level components in harsh factory environments. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control |
|
Use Scenario: Shielding Ethernet PHYs, RS-485 transceivers, and PoE injectors from induced surges on outdoor or long-cable runs. IC Role / Device Role / Timing Role: First-line TVS device mounted adjacent to connectors, operating in parallel with GDTs or MOVs in multi-stage protection schemes. Use Value: Fast response time and low clamping voltage ensure compliance with IEC 61000-4-5 Level 4 (4 kV) testing without signal distortion or data corruption. |
Use Scenario: Suppressing commutation spikes from brushed DC motors and solenoids in washing machines, HVAC actuators, and power tools. IC Role / Device Role / Timing Role: Snubber-style TVS placed across motor terminals or H-bridge outputs to absorb inductive kickback energy. Use Value: Handles repetitive 600 W pulses at 0.01 % duty cycle, extending MOSFET lifespan and reducing electromagnetic interference in Class B consumer EMC testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18CA | Same VWM (15.3 V), VC = 29.2 V at 20.9 A; lower PPPM (400 W); SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; less suitable for automotive load dump or industrial 600 W surge standards. | Select when board space is constrained and surge energy is ≤400 W; verify thermal derating on smaller pads. |
| 1.5KE18CA | Same VWM/VC specs but axial-leaded DO-201 package; higher peak pulse current (38.8 A), same 600 W rating. | Not SMT-compatible; requires through-hole assembly and larger board area; unsuitable for automated high-volume production. | Choose only for prototyping or legacy through-hole designs; avoid for new SMT-based automotive or industrial platforms. |
Compared with SMAJ18CA and 1.5KE18CA, the P6SMB18CAHE3/52 uniquely combines AEC-Q101 qualification, SMB SMT compatibility, and full 600 W surge handling - making it the preferred choice for production automotive and industrial systems requiring validated reliability and automated assembly support.
Availability
P6SMB18CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection circuits, and consumer appliance motor drives requiring stable component supply and long-term lifecycle continuity.
Supply support for P6SMB18CAHE3/52 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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The P6SMB series was developed to deliver high-power, surface-mount TVS solutions for automotive and industrial markets where AEC-Q101 qualification, repeatable clamping, and automated assembly compatibility are mandatory design requirements.
FAQ
What does the "CA" suffix indicate in P6SMB18CAHE3/52?
The "CA" suffix denotes a bidirectional configuration: the P6SMB18CAHE3/52 provides symmetrical transient suppression in both voltage polarities, with identical VBR, VC, and IPPM characteristics regardless of signal direction. This eliminates polarity marking and simplifies layout for AC-coupled or differential signal lines, unlike unidirectional variants (e.g., P6SMB18A) that require cathode alignment.
Is P6SMB18CAHE3/52 suitable for automotive applications?
Yes - the P6SMB18CAHE3/52 carries the HE3 suffix, confirming AEC-Q101 qualification per Vishay's documentation. It has passed stress tests including high-temperature operating life, temperature cycling, and ESD, making it appropriate for under-hood and chassis-mounted automotive electronics such as body control modules and sensor interfaces where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of P6SMB18CAHE3/52 and how is it measured?
The maximum clamping voltage (VC) of the P6SMB18CAHE3/52 is 25.2 V, measured at a peak pulse current (IPPM) of 23.8 A using the standardized 10/1000 μs double-exponential waveform. This value represents the highest voltage the device allows across protected circuitry during a surge event and is confirmed per Figure 1 and Table on page 2 of Vishay document 88370.
How does the SMB (DO-214AA) package of P6SMB18CAHE3/52 affect thermal performance?
The SMB package of the P6SMB18CAHE3/52 delivers 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. This thermal performance enables sustained 5.0 W power dissipation at TA = 50 °C and supports reliable operation in compact, high-density PCB layouts without additional heatsinking.
Can P6SMB18CAHE3/52 replace older P6SMB18CA parts with different suffixes?
Yes - the P6SMB18CAHE3/52 is a direct replacement for P6SMB18CA-E3/52 and P6SMB18CA-M3/52 in terms of electrical specs and package, with added AEC-Q101 qualification. The HE3 suffix indicates RoHS-compliant construction plus automotive qualification, while maintaining identical VWM (15.3 V), VBR (17.1–18.9 V), and VC (25.2 V) values - ensuring drop-in compatibility in existing designs requiring enhanced reliability validation.
P6SMB18CAHE3/52 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:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB18CAHE3/52 FAQ
1.How can I place an order for P6SMB18CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB18CAHE3/52 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 P6SMB18CAHE3/52 reliable?
The price and inventory of P6SMB18CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB18CAHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB18CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB18CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB18CAHE3/52?
P6SMB18CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB18CAHE3/52 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 P6SMB18CAHE3/52?
For technical support, including P6SMB18CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB18CAHE3/52 requirements.
6.How does Aetrix verify that P6SMB18CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB18CAHE3/52 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 P6SMB18CAHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB18CAHE3/52?
All P6SMB18CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB18CAHE3/52, 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 P6SMB18CAHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB18CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB18CAHE3/52 Tags
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