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Vishay General Semiconductor - Diodes Division P6SMB18CAHE3_A/H
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- Part No.:
- P6SMB18CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB18CAHE3_A/H.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,276
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Product details
Overview
P6SMB18CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, 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 interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB18CAHE3_A/H datasheet, P6SMB18CAHE3_A/H pinout, P6SMB18CAHE3_A/H application, or P6SMB18CAHE3_A/H equivalent, this device is selected for robust ESD and surge protection where bidirectional clamping, AEC-Q101 qualification, RoHS compliance, and low-profile SMB packaging are required - especially in space-constrained automotive ECUs and industrial I/O modules.
Technical Context
The P6SMB18CAHE3_A/H operates as a symmetrical, bidirectional TVS diode with no polarity marking, enabling identical clamping behavior in both directions. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and fast response time (<1.0 ps), while its MSL Level 1 rating supports lead-free reflow up to 260 °C.
Thermally, it exhibits a junction-to-ambient thermal resistance (RθJA) of 100 °C/W and a junction-to-lead resistance (RθJL) of 20 °C/W, allowing reliable operation up to 150 °C junction temperature. Its 600 W peak pulse power rating is derated linearly above 25 °C ambient per Figure 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 15.3 V - Maximum continuous reverse voltage before significant leakage; defines safe operating window for protected circuitry. |
| VBR (Breakdown) | 17.1–18.9 V at 1 mA - Voltage at which device enters avalanche conduction; tight tolerance enables predictable clamping onset. |
| VC (Clamping) | 25.2 V at 23.8 A (10/1000 μs) - Peak voltage seen by downstream components during surge; critical for ensuring IC survival under IEC 61000-4-5 Level 3 stress. |
| PPPM | 600 W - Peak transient energy absorption capacity; supports repetitive 0.01% duty cycle surges without degradation. |
| ID (Leakage) | ≤1.0 μA at VWM - Ultra-low reverse leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max. | +150 °C - Enables deployment in under-hood automotive environments and high-temperature industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking - bidirectional symmetry eliminates orientation concerns during automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals behave identically; clamps positive or negative transients equally - no cathode band or polarity identification required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN, RS-485, sensor bridges) without external polarity management. |
| AEC-Q101 qualification | Validates long-term reliability in automotive applications including engine control, body electronics, and ADAS sensors under thermal and mechanical stress. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges (e.g., 2 Ω source impedance, 40 A) without failure - meets ISO 7637-2 Pulse 1/2a/3a requirements. |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk in high-volume SMT assembly. |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime and temperature extremes - critical for precision analog front-ends and low-power IoT nodes. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects microcontroller GPIOs and level-shifter inputs from load-dump and inductive switching transients on 12 V vehicle bus lines. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point before signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to MCU I/O pins during ISO 7637-2 Pulse 5a (load dump) events up to 35 V/100 ms. |
Use Scenario: Shields optocoupler input LEDs and Schmitt-trigger receivers on 24 V DC digital input channels from field-wiring surge coupling. IC Role / Device Role / Timing Role: Primary transient suppressor mounted adjacent to terminal block, shunting surge energy before isolation barrier. Use Value: Maintains functional safety integrity by limiting transient voltage to <25.2 V - below optocoupler CTR degradation threshold and receiver overvoltage limit. |
| Automotive Camera Sensor Interface | Smart Home Motion Sensor Node |
Use Scenario: Guards MIPI CSI-2 differential data lines and power rails against ESD and cable discharge events in rear-view camera modules. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline on each signal pair and VDD line near connector. Use Value: Clamps ±15 kV contact ESD (IEC 61000-4-2) without distorting high-speed video signals due to symmetric, sub-100 pF junction capacitance. |
Use Scenario: Protects PIR sensor output amplifier and microcontroller ADC input from electrostatic discharge during user handling or dry-environment installation. IC Role / Device Role / Timing Role: Standoff-voltage-matched TVS placed at PCB edge connector to intercept ESD before analog signal chain. Use Value: Limits transient overshoot to ≤25.2 V, preventing ADC saturation and false triggers while maintaining <1 μA leakage for multi-year battery operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18CA | Same VWM (15.3 V), VC = 29.2 V at 20.6 A, lower PPPM (400 W), SMA package (larger footprint, higher RθJA). | Not AEC-Q101 qualified; suitable for commercial-grade consumer or telecom equipment only. | Select when cost sensitivity outweighs automotive qualification and thermal performance requirements. |
| SMCJ18CA | Same VWM and VC (25.2 V), higher PPPM (1500 W), larger SMC (DO-214AB) package, RθJA = 35 °C/W. | Over-specified for 600 W needs; adds board area and cost where SMB footprint is constrained. | Choose only if system-level surge testing exceeds IEC 61000-4-5 Level 4 and layout allows SMC package. |
Compared with SMAJ18CA and SMCJ18CA, P6SMB18CAHE3_A/H delivers optimal balance of AEC-Q101 compliance, SMB footprint efficiency, and 600 W surge capability - making it the preferred choice for space-limited, thermally demanding automotive and industrial designs requiring validated reliability.
Availability
P6SMB18CAHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and smart sensor interface modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB18CAHE3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications systems - engineered for robustness under harsh electrical and thermal conditions while meeting stringent automotive qualification standards.
FAQ
What is the clamping voltage of P6SMB18CAHE3_A/H under a 10/1000 μs surge?
The P6SMB18CAHE3_A/H has a maximum clamping voltage (VC) of 25.2 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 23.8 A. This value is measured per standard test conditions defined in the Vishay datasheet (Document Number: 88370), and represents the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces downstream.
Is P6SMB18CAHE3_A/H suitable for automotive applications?
Yes, P6SMB18CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101-qualified construction. It meets requirements for temperature cycling, high-temperature reverse bias, and ESD robustness - making P6SMB18CAHE3_A/H appropriate for body electronics, infotainment interfaces, and ADAS sensor protection in passenger vehicles and commercial fleets.
Does P6SMB18CAHE3_A/H have polarity markings?
No, P6SMB18CAHE3_A/H is a bidirectional TVS diode and carries no polarity marking such as a cathode band. Its symmetrical internal structure ensures identical clamping behavior for both positive and negative transients - simplifying PCB layout and eliminating orientation errors during automated placement. This distinguishes P6SMB18CAHE3_A/H from unidirectional variants like P6SMB18A.
What is the maximum operating junction temperature for P6SMB18CAHE3_A/H?
The maximum operating junction temperature (TJ max.) for P6SMB18CAHE3_A/H is +150 °C, as specified in the Vishay P6SMB Series datasheet. This rating enables reliable operation in under-hood automotive environments and enclosed industrial control cabinets. Derating of peak pulse power begins above 25 °C ambient per Figure 2, and thermal design must account for RθJA = 100 °C/W when using the recommended 0.2" × 0.2" copper pad layout.
How does the "_A/H" suffix in P6SMB18CAHE3_A/H affect packaging and delivery?
The "_A/H" suffix in P6SMB18CAHE3_A/H indicates packaging in 7-inch diameter plastic tape and reel, with a base quantity of 750 units per reel. This format is optimized for high-speed pick-and-place assembly. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification, while "A" denotes the revision level per Vishay's ordering nomenclature - ensuring P6SMB18CAHE3_A/H matches the latest released version documented in Revision 09-Jan-2024.
P6SMB18CAHE3_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:
- -
- 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_A/H FAQ
1.How can I place an order for P6SMB18CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB18CAHE3_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 P6SMB18CAHE3_A/H reliable?
The price and inventory of P6SMB18CAHE3_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 P6SMB18CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB18CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB18CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB18CAHE3_A/H?
P6SMB18CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB18CAHE3_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 P6SMB18CAHE3_A/H?
For technical support, including P6SMB18CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB18CAHE3_A/H requirements.
6.How does Aetrix verify that P6SMB18CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB18CAHE3_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 P6SMB18CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB18CAHE3_A/H?
All P6SMB18CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB18CAHE3_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 P6SMB18CAHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB18CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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