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Vishay General Semiconductor - Diodes Division P6SMB18AHM3/H
- Part No.:
- P6SMB18AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB18AHM3/H.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,910
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Product details
Overview
P6SMB18AHM3/H 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 test current, 25.2 V maximum clamping voltage at 23.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB18AHM3/H datasheet, P6SMB18AHM3/H pinout, P6SMB18AHM3/H application, or P6SMB18AHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), polarity marking convention, and real-world protection use cases - all confirmed from Vishay's official P6SMB series specification document (Rev. 09-Jan-2024, Doc. #88370).
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity identification, leveraging glass-passivated junction technology for stable surge response. Its low incremental surge resistance and fast response time enable effective suppression of inductive switching spikes and ESD events up to 600 W without degradation under repetitive 0.01% duty cycle conditions.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads per terminal, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and JESD201 Class 2 whisker resistance. The HM3 suffix confirms halogen-free, RoHS-compliant construction with AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 15.3 V - Maximum continuous reverse voltage before leakage exceeds 1 μA; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 17.1–18.9 V at 1 mA - Voltage range where device transitions from high-impedance to low-impedance conduction; ensures predictable turn-on during transients. |
| VC (Clamping) | 25.2 V at 23.8 A - Maximum voltage seen across terminals during 10/1000 μs surge; determines protected circuit's worst-case overvoltage exposure. |
| PPPM | 600 W - Peak pulse power handling capability with 10/1000 μs waveform; supports robust protection against lightning-induced surges and load dump events. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard PCB pad layout; informs derating requirements above 25 °C ambient. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments with proper thermal design. |
| AEC-Q101 | Qualified - Validated for automotive applications per stress test requirements including HTGB, HTRB, and temperature cycling; suffix HM3_B/H denotes qualification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by band marking on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to lower-potential side of protected line; conducts during forward surge or DC bias conditions. |
| Cathode | Reverse-biased clamping terminal | Marked with band; connected to higher-potential side (e.g., VBUS or signal line); initiates avalanche clamping when transient exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without external series impedance. |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without popcorn effect or delamination risk. |
| Halogen-free & RoHS-compliant (HM3) | Meets automotive and industrial environmental compliance mandates without compromising surge performance. |
| AEC-Q101 qualified (HM3_B/H) | Validated for automotive subsystems including body control modules, infotainment power rails, and sensor interface protection. |
Applications
| Automotive Body Control Module (BCM) Power Rail | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12 V supply input of BCM from load dump transients (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND, clamping surges within 1 ns to limit downstream IC stress. Use Value: With 25.2 V clamping at 23.8 A, keeps protected MCU and CAN transceivers below absolute maximum ratings during 100 V/50 ms pulses. |
Use Scenario: Shields 24 V digital input channels of programmable logic controllers from inductive kickback caused by solenoid/relay switching. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted at connector entry point, absorbing >600 W energy without failure across 10⁵ surge cycles. Use Value: 15.3 V VWM allows clean detection of 24 V logic high while clamping transients to safe levels for optocoupler input stages. |
| Consumer Appliance Motor Drive Board | Telecom Base Station Sensor Interface |
Use Scenario: Guards gate driver ICs and bootstrap capacitors on BLDC motor inverters against shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-response TVS placed across half-bridge supply rails to suppress dV/dt-induced ringing and cross-conduction transients. Use Value: Low RθJL (20 °C/W) and 100 °C/W RθJA enable sustained operation at 85 °C ambient without derating loss in surge capability. |
Use Scenario: Protects RS-485 transceiver inputs and analog sensor front-ends (e.g., temperature, humidity) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS (typ. <100 pF at 0 V) placed inline with differential signal pairs. Use Value: 25.2 V clamping prevents latch-up in transceivers while maintaining signal integrity up to 10 Mbps due to minimal parasitic loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A | 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 load dump or industrial repetitive surge environments requiring full 600 W rating. | Select P6SMB18AHM3/H when 600 W surge margin, AEC-Q101 validation, or halogen-free compliance is required. |
| 1.5SMC18A | Higher-power 1500 W variant in larger SMC (DO-214AB) package; same VWM/VBR but requires 30% more PCB area and different pad layout. | Used where system-level surge immunity exceeds IEC 61000-4-5 Level 4 and thermal mass supports higher dissipation. | Choose P6SMB18AHM3/H for space-constrained designs needing 600 W in SMB footprint and automotive qualification. |
Compared with SMAJ18A and 1.5SMC18A, P6SMB18AHM3/H uniquely balances 600 W surge capability, AEC-Q101 qualification, halogen-free construction, and SMB footprint - making it optimal for automotive and industrial applications where reliability, regulatory compliance, and board space are jointly constrained.
Availability
P6SMB18AHM3/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and consumer appliance motor drive systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for P6SMB18AHM3/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 telecom infrastructure - engineered for robust clamping, low leakage, and seamless integration into automated SMT assembly lines.
FAQ
What is the clamping voltage of P6SMB18AHM3/H at its rated peak pulse current?
The P6SMB18AHM3/H has a maximum clamping voltage (VC) of 25.2 V at 23.8 A peak pulse current (IPPM), measured using the standardized 10/1000 μs double-exponential waveform. This value is specified in Vishay's official datasheet (Doc. #88370, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuits during surge events. Engineers use this parameter to verify that downstream components remain within their absolute maximum voltage ratings during transient conditions.
Is P6SMB18AHM3/H qualified for automotive applications?
Yes, P6SMB18AHM3/H is AEC-Q101 qualified, as confirmed by the HM3_B/H ordering code suffix and Vishay's documentation (Doc. #88370). The "_B" denotes AEC-Q101 qualification for the 6.8 V to 220 V unidirectional/bidirectional range, and "H" indicates 7" tape-and-reel packaging. This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - validating suitability for under-hood and chassis-mounted automotive electronics.
What does the "HM3" suffix mean in P6SMB18AHM3/H?
The "HM3" suffix in P6SMB18AHM3/H indicates halogen-free, RoHS-compliant construction with matte tin-plated leads, meeting JESD201 Class 2 whisker resistance requirements. It also signals AEC-Q101 qualification when paired with the "_B" revision code (as in HM3_B/H). This distinguishes it from commercial-grade "M3" parts and ensures compliance with automotive environmental standards without sacrificing electrical performance or surge robustness.
How does P6SMB18AHM3/H differ from P6SMB18A-E3/52?
P6SMB18AHM3/H differs from P6SMB18A-E3/52 in three key ways: (1) HM3 denotes halogen-free + AEC-Q101 qualification, whereas E3 is RoHS-compliant only; (2) the "H" packaging code specifies 7" tape-and-reel (750 units/reel), while "52" also indicates 7" reel but without automotive qualification; (3) HM3_B/H includes full AEC-Q101 test reporting and enhanced process controls for automotive use, unlike the commercial E3 variant. Both share identical electrical specs and SMB package.
What is the thermal resistance of P6SMB18AHM3/H, and how does it affect layout design?
P6SMB18AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly impacts power derating: at 85 °C ambient, its 5.0 W steady-state power dissipation must be reduced to ~3.0 W to maintain TJ ≤ 150 °C. Layout must replicate the specified pad dimensions and avoid thermal isolation - insufficient copper area increases RθJA and risks premature thermal failure during repetitive surge events.
P6SMB18AHM3/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:
- 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:
- 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)
P6SMB18AHM3/H FAQ
1.How can I place an order for P6SMB18AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB18AHM3/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 P6SMB18AHM3/H reliable?
The price and inventory of P6SMB18AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB18AHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB18AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB18AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB18AHM3/H?
P6SMB18AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB18AHM3/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 P6SMB18AHM3/H?
For technical support, including P6SMB18AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB18AHM3/H requirements.
6.How does Aetrix verify that P6SMB18AHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB18AHM3/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 P6SMB18AHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB18AHM3/H?
All P6SMB18AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB18AHM3/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 P6SMB18AHM3/H part is unused and in its original packaging.
Return procedure for P6SMB18AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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