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Vishay General Semiconductor - Diodes Division P6SMB18AHE3/52
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- Part No.:
- P6SMB18AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB18AHE3/52.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,750
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Product details
Overview
P6SMB18AHE3/52 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 a 15.3 V stand-off voltage (VWM), 17.1–18.9 V breakdown voltage (VBR) at 1 mA, 25.2 V maximum clamping voltage (VC) at 23.8 A peak pulse current, and 600 W peak pulse power capability with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the P6SMB18AHE3/52 datasheet, P6SMB18AHE3/52 pinout, P6SMB18AHE3/52 application, or P6SMB18AHE3/52 equivalent, this device is selected for robust ESD and surge protection where low-profile SMT placement, AEC-Q101 qualification, and stable clamping under repetitive transients are required.
Technical Context
The P6SMB18AHE3/52 operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for fast response (<1 ns) to transient overvoltages. Its glass-passivated junction ensures stable leakage performance and long-term reliability under thermal cycling.
It delivers 600 W peak pulse power handling per 10/1000 µs waveform at 0.01% duty cycle, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling operation up to +150 °C junction temperature when mounted on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 15.3 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 17.1–18.9 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | 25.2 V at 23.8 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream components. |
| PPPM | 600 W - Peak transient energy absorption capacity; supports IEC 61000-4-5 Level 4 surge immunity design. |
| IPPM | 23.8 A - Peak pulse current corresponding to VC; determines minimum trace width and PCB layout robustness. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments with proper thermal pad design. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - suitable for engine control and ADAS modules. |
| 600 W peak pulse power | Supports repeated 10/1000 µs surges without degradation; meets IEC 61000-4-5 requirements for industrial equipment. |
| Glass passivated junction | Ensures stable leakage current (<1 µA at VWM) and consistent VBR across temperature and lifetime. |
| Low profile SMB package | 0.086" height enables use in space-constrained layouts; compatible with standard SMT assembly and AOI inspection. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH; no bake-out required prior to reflow soldering. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients before they reach LDOs or microcontrollers. Use Value: Limits voltage to ≤25.2 V during 23.8 A surges, preventing latch-up or gate oxide damage in downstream semiconductors. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential or single-ended signal lines to shunt fast transients. Use Value: Sub-1 ns response time and <1 µA leakage preserve signal integrity while meeting IEC 61000-4-2 Level 4 (15 kV air) requirements. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
|
Use Scenario: Input-side protection in AC/DC adapters exposed to mains-borne surges and switching noise. IC Role / Device Role / Timing Role: Primary-side TVS on DC bus after rectification to absorb residual transients missed by MOVs. Use Value: 600 W rating handles repetitive 10/1000 µs surges without derating; RoHS-compliant HE3 suffix satisfies regional compliance mandates. |
Use Scenario: Front-end protection on Ethernet or RS-485 ports in network infrastructure equipment. IC Role / Device Role / Timing Role: Bidirectional or unidirectional TVS placed across data lines or between line and ground to suppress lightning-induced surges. Use Value: Stable clamping at 25.2 V prevents receiver IC damage while maintaining signal eye diagram integrity under transient stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A-E3/52 | Same VWM/VBR/VC, but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients; less suitable for automotive load dump or industrial 4 kV surge testing. | Select when board space is critical and surge energy is ≤400 W; verify thermal margin with reduced copper area. |
| 1.5SMC18A | Same electrical specs, but larger SMC (DO-214AB) package; higher PPPM derating margin and RθJL = 15 °C/W. | Better thermal performance for high-repetition-rate surges; requires larger PCB real estate and different stencil design. | Choose for demanding industrial applications needing extended surge endurance or improved heat dissipation without redesigning layout. |
Compared with SMAJ18A-E3/52 and 1.5SMC18A, the P6SMB18AHE3/52 offers balanced surge capability (600 W), AEC-Q101 qualification, and SMB footprint - making it optimal for automotive and space-constrained industrial designs requiring validated reliability and standardized assembly.
Availability
P6SMB18AHE3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and consumer power supply designs requiring stable component supply, AEC-Q101 compliance, and repeatable surge protection performance.
Supply support for P6SMB18AHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robust clamping, low leakage, and seamless integration into automated SMT production lines.
FAQ
What is the clamping voltage of P6SMB18AHE3/52 at its rated peak pulse current?
The P6SMB18AHE3/52 has a maximum clamping voltage (VC) of 25.2 V at 23.8 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 circuits during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings. The P6SMB18AHE3/52 maintains this clamping performance across its full operating temperature range.
Is P6SMB18AHE3/52 qualified for automotive applications?
Yes, the P6SMB18AHE3/52 carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and surge endurance per AEC-Q101 Rev D. This makes the P6SMB18AHE3/52 suitable for under-hood and cabin applications such as body control modules, infotainment power rails, and ADAS sensor interfaces where automotive-grade reliability is mandatory.
What is the standoff voltage and why does it matter for P6SMB18AHE3/52?
The P6SMB18AHE3/52 has a reverse stand-off voltage (VWM) of 15.3 V, meaning it remains non-conductive up to this DC or RMS voltage level. This parameter ensures normal circuit operation without leakage or power loss, while providing sufficient margin below the 17.1–18.9 V breakdown range. For a 12 V automotive system, the P6SMB18AHE3/52's VWM allows safe operation during battery transients up to ~15 V while still triggering reliably during load dump events exceeding 25 V.
How does the SMB package of P6SMB18AHE3/52 compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of the P6SMB18AHE3/52 measures 0.220" × 0.130" with 0.086" height - smaller than SMC (DO-214AB) but larger than SMA (DO-214AC), offering a balance of surge capability and board space efficiency. Its thermal resistance is 100 °C/W (junction-to-ambient), lower than SMA's 140 °C/W but higher than SMC's 75 °C/W. The P6SMB18AHE3/52's SMB footprint supports high-yield automated placement while delivering full 600 W pulse rating - unlike smaller packages that require derating.
Can P6SMB18AHE3/52 be used in bidirectional configurations?
No, the P6SMB18AHE3/52 is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies part numbers ending in "CA", such as P6SMB18CA. Using the P6SMB18AHE3/52 in reverse-biased configurations risks permanent failure due to forward conduction during negative transients. Always match device polarity to circuit topology - the P6SMB18AHE3/52 must be oriented with cathode toward the protected line and anode to ground.
P6SMB18AHE3/52 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:
- 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)
P6SMB18AHE3/52 FAQ
1.How can I place an order for P6SMB18AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB18AHE3/52 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 P6SMB18AHE3/52 reliable?
The price and inventory of P6SMB18AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB18AHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB18AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB18AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB18AHE3/52?
P6SMB18AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB18AHE3/52 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 P6SMB18AHE3/52?
For technical support, including P6SMB18AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB18AHE3/52 requirements.
6.How does Aetrix verify that P6SMB18AHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB18AHE3/52 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 P6SMB18AHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB18AHE3/52?
All P6SMB18AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB18AHE3/52, 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 P6SMB18AHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB18AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB18AHE3/52 Tags
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