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Vishay General Semiconductor - Diodes Division P6SMB300AHM3_C/H
- Part No.:
- P6SMB300AHM3_C/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB300AHM3_C/H.pdf
- Description:
- TVS DIODE 256VWM 414VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,815
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Product details
Overview
P6SMB300AHM3_C/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 300 V standoff voltage (VWM), 344 V clamping voltage (VC) at 1.45 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in industrial power supplies and automotive control units.
For engineers reviewing the P6SMB300AHM3_C/H datasheet, P6SMB300AHM3_C/H pinout, P6SMB300AHM3_C/H application, or P6SMB300AHM3_C/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 150 °C max junction temperature, and low incremental surge resistance enabling robust clamping under repetitive 0.01% duty cycle surges.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated silicon junction technology for fast response (<1 ns) and stable breakdown behavior. Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W support reliable operation on standard 0.2" × 0.2" copper pads without forced cooling.
The device 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 and AEC-Q101 qualification per revision D for high-reliability automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 300 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown) | 333–368 V at 1 mA - Confirmed breakdown threshold range ensuring predictable turn-on margin |
| VC (Clamping) | 414 V at IPPM = 1.45 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case transient |
| PPPM | 600 W - Sustains 10/1000 μs surge energy without degradation under 0.01% duty cycle |
| TJ max | 150 °C - Enables use in under-hood automotive environments and sealed industrial enclosures |
| RθJA | 100 °C/W - Defines thermal derating slope; requires ≥5.0 mm × 5.0 mm copper pad per terminal for full rating |
| AEC-Q101 | Qualified (HM3 suffix, revision D) - Validated for automotive electronics per stress test requirements |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side reference | Must be routed to lowest-impedance ground plane to minimize clamping loop inductance |
| Cathode | Current exit point in forward bias; connected to line being protected (e.g., 300 V rail or sensor input) | Band-marked end; placement adjacent to protected IC pin reduces transient coupling path length |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift |
| 600 W peak pulse power (10/1000 μs) | Handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) without failure |
| AEC-Q101 qualified (HM3) | Validated for automotive powertrain and body control modules requiring zero field failures |
| Halogen-free & RoHS-compliant | Meets EU ELV Directive and IPC-1752A material declaration requirements |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking |
Applications
| Automotive Power Distribution | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting 24 V/48 V battery-fed ECUs from load-dump transients up to 120 V and alternator ripple spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and chassis ground to clamp positive-going overvoltage events. Use Value: Clamps to ≤414 V within nanoseconds, preventing damage to downstream DC-DC controllers rated for 40 V input. |
Use Scenario: Shielding 24 V digital input channels of programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on each optocoupler input line to absorb 1 kV/500 A IEC 61000-4-5 surges. Use Value: Maintains 300 V VWM margin above nominal 24 V supply while limiting transient voltage to safe levels for CMOS input stages. |
| Telecom Power Supply Rails | Sensor Signal Line Protection |
|
Use Scenario: Safeguarding primary-side MOSFETs and gate drivers in telecom AC/DC front-ends exposed to AC line surges. IC Role / Device Role / Timing Role: High-VWM TVS across bulk capacitor terminals to suppress differential-mode transients exceeding 300 V. Use Value: Withstands repeated 600 W pulses without parameter shift, preserving long-term reliability in 24/7 infrastructure equipment. |
Use Scenario: Guarding analog outputs of pressure/temperature sensors in factory automation against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on 4–20 mA loop outputs to prevent latch-up in precision DACs. Use Value: Delivers sub-nanosecond response and <1 nF junction capacitance, avoiding signal integrity degradation at 10 kHz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ300A-E3/5B | Same VWM (300 V), lower PPPM (400 W), non-AEC-Q101, E3 suffix (RoHS only) | Limited to commercial-grade industrial power supplies; not validated for automotive temperature cycling or humidity testing | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom is unnecessary |
| 1.5SMC300AHE3_A/H | Same VWM (300 V), identical PPPM (600 W), but SMC (DO-214AB) package - 2.5 mm wider, higher thermal mass | Requires PCB layout change; better heat dissipation in high-ambient-temp environments (>105 °C) | Choose when board space allows larger footprint and enhanced thermal performance justifies redesign effort |
Compared with P6SMB300AHM3_C/H, SMAJ300A-E3/5B offers lower cost but sacrifices AEC-Q101 validation and 33% peak power headroom, while 1.5SMC300AHE3_A/H delivers equal electrical performance in a thermally superior but less space-efficient package requiring layout revision.
Availability
P6SMB300AHM3_C/H is available at Aetrix Electronics and suitable for automotive control units, industrial PLCs, and telecom power supplies requiring stable component supply with guaranteed AEC-Q101 compliance and halogen-free materials.
Supply support for P6SMB300AHM3_C/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, automotive-qualified components meeting global environmental standards.
The P6SMB Series targets surface-mount transient protection in space-constrained, high-surge environments-specifically engineered for automotive subsystems, industrial controls, and telecom infrastructure where AEC-Q101 validation and consistent clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of the P6SMB300AHM3_C/H under a 10/1000 μs surge?
The P6SMB300AHM3_C/H clamps to a maximum of 414 V when subjected to its rated peak pulse current of 1.45 A using the standardized 10/1000 μs waveform. This value is measured at TJ = 25 °C with specified mounting conditions (0.2" × 0.2" copper pads), and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB300AHM3_C/H maintains this clamping performance across its qualified operating temperature range.
Is the P6SMB300AHM3_C/H suitable for automotive applications?
Yes, the P6SMB300AHM3_C/H is explicitly qualified to AEC-Q101 (revision D) and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction and automotive-grade reliability testing. It is designed for use in engine control modules, body electronics, and ADAS power domains where sustained operation from −65 °C to +150 °C and resistance to mechanical shock/vibration are required. The P6SMB300AHM3_C/H meets all stress tests defined in the AEC-Q101 standard.
What does the "HM3" suffix indicate in P6SMB300AHM3_C/H?
The "HM3" suffix in P6SMB300AHM3_C/H denotes halogen-free, RoHS-compliant packaging and AEC-Q101 qualification per revision D. It distinguishes this variant from commercial-grade versions (e.g., E3 or M3) and confirms compliance with automotive material restrictions and reliability validation protocols. The "C/H" denotes tape-and-reel packaging in 7-inch reels (H) with standard orientation coding (C), ensuring compatibility with automated SMT assembly lines. The P6SMB300AHM3_C/H is traceable to Vishay's certified automotive production flow.
How does the P6SMB300AHM3_C/H compare to bidirectional TVS diodes in the same series?
The P6SMB300AHM3_C/H is unidirectional and features a cathode band for polarity identification, whereas bidirectional variants (e.g., P6SMB300CA) lack polarity marking and conduct symmetrically in both directions. Unidirectional types like the P6SMB300AHM3_C/H offer lower leakage current and tighter VBR tolerance in DC-coupled applications such as power rail protection. The P6SMB300AHM3_C/H is not interchangeable with bidirectional parts without circuit-level review due to fundamental polarity and conduction behavior differences.
What is the thermal resistance and recommended PCB layout for the P6SMB300AHM3_C/H?
The P6SMB300AHM3_C/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. To achieve full 600 W pulse rating, each pad must be solid, unbroken, and directly connected to internal ground/power planes via multiple vias. The P6SMB300AHM3_C/H thermal performance degrades significantly if pads are reduced or isolated, requiring derating per Figure 2 in the Vishay datasheet 88370.
P6SMB300AHM3_C/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):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 1.45A
- 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 (SMB)
P6SMB300AHM3_C/H FAQ
1.How can I place an order for P6SMB300AHM3_C/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB300AHM3_C/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 P6SMB300AHM3_C/H reliable?
The price and inventory of P6SMB300AHM3_C/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB300AHM3_C/H is usually 5 days.
3.What payment methods are accepted for P6SMB300AHM3_C/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB300AHM3_C/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB300AHM3_C/H?
P6SMB300AHM3_C/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB300AHM3_C/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 P6SMB300AHM3_C/H?
For technical support, including P6SMB300AHM3_C/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB300AHM3_C/H requirements.
6.How does Aetrix verify that P6SMB300AHM3_C/H is sourced from the original manufacturer or authorized distributors?
All P6SMB300AHM3_C/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 P6SMB300AHM3_C/H meets industry standards.
7.What is the process for return or replacement of P6SMB300AHM3_C/H?
All P6SMB300AHM3_C/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB300AHM3_C/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 P6SMB300AHM3_C/H part is unused and in its original packaging.
Return procedure for P6SMB300AHM3_C/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB300AHM3_C/H Tags
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