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Vishay General Semiconductor - Diodes Division P6SMB300AHM3_D/I
- Part No.:
- P6SMB300AHM3_D/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB300AHM3_D/I.pdf
- Description:
- 600W,300V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,342
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Product details
Overview
P6SMB300AHM3_D/I 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 (PPPM) with 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines in industrial power supplies and automotive ECUs against inductive switching transients.
For engineers reviewing the P6SMB300AHM3_D/I datasheet, P6SMB300AHM3_D/I pinout, P6SMB300AHM3_D/I application, or P6SMB300AHM3_D/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below its 300 V standoff voltage and rapidly transitions to low-impedance conduction above its 344 V clamping threshold during transient events. Its glass-passivated junction ensures stable breakdown behavior and long-term reliability under repetitive surge stress.
The device delivers 600 W peak pulse power handling per 10/1000 μs waveform with 0.01 % duty cycle, and features a thermal resistance of 100 °C/W (junction-to-ambient) when mounted on 5.0 mm × 5.0 mm copper pads. Its MSL Level 1 rating supports lead-free reflow up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 300 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 333–368 V at 1 mA - Confirmed avalanche initiation range under standardized test conditions |
| VC (Clamping) | 414 V at IPPM = 1.45 A - Maximum voltage seen across protected circuit during worst-case transient |
| PPPM | 600 W - Peak transient energy absorption capability with 10/1000 μs waveform |
| TJ max | 150 °C - Maximum allowable junction temperature for reliable long-term operation |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient air on standard 5.0 mm × 5.0 mm pads |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability per JESD22-A108 and stress testing requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HM3 suffix). Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts surge current to ground during overvoltage event |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path for clamping action |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without derating on standard PCB layout |
| AEC-Q101 qualified (HM3) | Validated for automotive under-hood applications including engine control modules and body electronics |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| MSL Level 1 | Supports single-pass lead-free reflow at 260 °C peak without popcorn or delamination risk |
| Low clamping ratio (VC/VBR ≈ 1.23) | Minimizes overvoltage stress on downstream silicon while maintaining fast response time |
Applications
| Industrial Power Supply Protection | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Suppresses load-dump and inductive kickback transients on 24 V DC input rails feeding switch-mode controllers. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between input rail and chassis ground. Use Value: Limits transient voltage to ≤414 V, preventing damage to 36 V-rated input-stage MOSFETs and gate drivers. |
Use Scenario: Shields CAN transceiver and microcontroller I/O pins from alternator load dump and ISO 7637-2 pulse 5a/b. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on battery-supplied 12 V rail prior to LDO regulator. Use Value: Withstands 10/1000 μs pulses up to 600 W while maintaining AEC-Q101 compliance for 15-year vehicle life. |
| Telecom Base Station DC Feeds | Sensor Signal Line Protection |
Use Scenario: Protects remote radio unit (RRU) power inputs against lightning-induced surges on outdoor DC feeder cables. IC Role / Device Role / Timing Role: First-line TVS on -48 V telecom supply rail, upstream of DC/DC converters. Use Value: Clamps 414 V at 1.45 A, compatible with ITU-T K.21 heavy-duty surge requirements for Class H equipment. |
Use Scenario: Guards analog output lines of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance (<5 pF typical) unidirectional TVS on 0–10 V or 4–20 mA signal paths. Use Value: Prevents latch-up or oxide rupture in ADC input stages during ESD events while preserving signal integrity. |
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, commercial-grade (E3) | Limited to industrial/commercial use; not qualified for automotive under-hood environments | Select when AEC-Q101 is unnecessary and cost sensitivity outweighs automotive reliability requirements |
| 1.5SMC300AHE3_A/H | Same VWM (300 V), higher package thermal mass (SMC), 1500 W PPPM, AEC-Q101 qualified | Requires larger PCB footprint (DO-214AB vs. DO-214AA); suited for higher-energy surge zones | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits larger SMC package |
Compared with P6SMB300AHM3_D/I, SMAJ300A-E3/5B offers lower cost but lacks automotive qualification and pulse power headroom, while 1.5SMC300AHE3_A/H provides greater surge margin at the expense of footprint and thermal profile-making P6SMB300AHM3_D/I optimal for space-constrained AEC-Q101 designs needing precise 600 W capability.
Availability
P6SMB300AHM3_D/I is available at Aetrix Electronics and suitable for industrial power supplies, automotive engine control units, telecom base station DC feeds, and sensor interface protection requiring stable component supply and full traceability.
Supply support for P6SMB300AHM3_D/I 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems, designed to meet stringent surge immunity standards while supporting automated manufacturing and extended temperature operation.
FAQ
What is the clamping voltage of the P6SMB300AHM3_D/I under maximum rated surge current?
The P6SMB300AHM3_D/I has a maximum clamping voltage (VC) of 414 V at its rated peak pulse current (IPPM) of 1.45 A, measured using the standard 10/1000 μs waveform. This value is guaranteed per the Vishay datasheet revision 09-Jan-2024 and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB300AHM3_D/I maintains this clamping performance across its specified operating temperature range.
Is the P6SMB300AHM3_D/I suitable for automotive applications?
Yes, the P6SMB300AHM3_D/I is AEC-Q101 qualified (indicated by the HM3 suffix), meaning it has passed stress tests for high-temperature operating life, temperature cycling, and mechanical shock required for automotive under-hood and body electronics. Its 150 °C maximum junction temperature and MSL Level 1 rating further support reflow compatibility and long-term reliability in automotive ECUs and power distribution modules.
What does the "D" in P6SMB300AHM3_D/I signify?
The "D" in P6SMB300AHM3_D/I denotes the AEC-Q101 qualification grade for high-voltage variants (250 V to 540 V) within the P6SMB family, as documented in Vishay's ordering information table. It distinguishes this part from lower-voltage AEC-Q101 versions marked with "B" and confirms compliance with automotive reliability requirements specific to the 300 V standoff rating.
How does the P6SMB300AHM3_D/I compare to bidirectional TVS diodes in the same series?
The P6SMB300AHM3_D/I is unidirectional and intended for DC line protection where polarity is fixed, offering tighter VBR tolerance and lower leakage than bidirectional equivalents like P6SMB300CA. Bidirectional variants lack cathode marking and conduct in both directions, making them suitable for AC or differential signal lines-but they exhibit higher capacitance and reduced clamping efficiency in DC applications. The P6SMB300AHM3_D/I is optimized for asymmetric DC rail protection.
What PCB pad layout is recommended for optimal thermal and electrical performance of the P6SMB300AHM3_D/I?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for the P6SMB300AHM3_D/I to achieve its rated 600 W peak pulse power and 100 °C/W thermal resistance. The pad layout must follow the DO-214AA outline dimensions shown in the datasheet, with no solder mask defined over the pads to maximize heat dissipation. Use of internal ground planes and thermal vias beneath pads further enhances thermal performance in high-surge environments.
P6SMB300AHM3_D/I 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:
- Active
- 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:
- 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)
P6SMB300AHM3_D/I FAQ
1.How can I place an order for P6SMB300AHM3_D/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB300AHM3_D/I 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_D/I reliable?
The price and inventory of P6SMB300AHM3_D/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB300AHM3_D/I is usually 5 days.
3.What payment methods are accepted for P6SMB300AHM3_D/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB300AHM3_D/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB300AHM3_D/I?
P6SMB300AHM3_D/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB300AHM3_D/I 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_D/I?
For technical support, including P6SMB300AHM3_D/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB300AHM3_D/I requirements.
6.How does Aetrix verify that P6SMB300AHM3_D/I is sourced from the original manufacturer or authorized distributors?
All P6SMB300AHM3_D/I 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_D/I meets industry standards.
7.What is the process for return or replacement of P6SMB300AHM3_D/I?
All P6SMB300AHM3_D/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB300AHM3_D/I, 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_D/I part is unused and in its original packaging.
Return procedure for P6SMB300AHM3_D/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB300AHM3_D/I Tags
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Diodes Incorporated
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