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Vishay General Semiconductor - Diodes Division P6SMB300AHM3_D/H
- Part No.:
- P6SMB300AHM3_D/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB300AHM3_D/H.pdf
- Description:
- 600W,300V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,977
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Product details
Overview
P6SMB300AHM3_D/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), 414 V clamping voltage (VC) at 1.45 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs). It protects power rails and signal lines in high-voltage industrial power supplies and automotive ECU input stages against lightning-induced surges and inductive switching transients.
For engineers reviewing the P6SMB300AHM3_D/H datasheet, P6SMB300AHM3_D/H pinout, P6SMB300AHM3_D/H application, or P6SMB300AHM3_D/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 150 °C maximum junction temperature, and verified clamping performance under repetitive 0.01% duty cycle surge conditions.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated silicon junction technology for stable breakdown behavior and low incremental surge resistance. Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W enable 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), supports automated SMT placement, and delivers sub-nanosecond response to transient overvoltages. Its 300 V VWM and 414 V VC define a 38% clamping ratio - critical for safeguarding 280–320 V DC bus interfaces while maintaining margin above operating voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 300 V - maximum continuous reverse working voltage before clamping initiates; sets upper limit for protected circuit's normal operating DC rail. |
| VC (Clamping Voltage) | 414 V at IPPM = 1.45 A (10/1000 µs) - peak voltage seen by downstream circuit during worst-case surge; defines protection margin for 350–400 V-rated components. |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capability under standardized 10/1000 µs waveform; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| IPPM (Peak Pulse Current) | 1.45 A - maximum non-repetitive surge current the device safely clamps; determines minimum series impedance required upstream. |
| TJmax | 150 °C - maximum junction temperature rating; allows operation in under-hood automotive or enclosed industrial enclosures without derating below full power. |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with IPC-7351B generic land pattern. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to system ground or lower-potential rail; forms cathode-to-anode clamping path during positive transients. |
| Cathode (marked with band) | Reverse-biased clamping terminal | Connected to protected line (e.g., 300 V DC input); conducts only when line voltage exceeds VWM, shunting surge to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - suitable for engine control modules and ADAS power inputs. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-20 and EU RoHS Directive 2011/65/EU; eliminates brominated flame retardants for safer end-of-life processing. |
| 600 W peak pulse power (10/1000 µs) | Handles repeated 6 kV/3 kA IEC 61000-4-5 Combination Wave surges with 0.01% duty cycle - sufficient for industrial AC/DC front-end protection. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Ensures minimal overvoltage stress on downstream MOSFETs or controllers during clamping - preserves 20%+ margin over 350 V rated devices. |
| MSL Level 1 moisture sensitivity | Zero bake requirement prior to reflow; supports direct placement into high-volume SMT lines using standard 260 °C peak profile. |
Applications
| Industrial Power Supply Input Protection | Automotive ECU High-Voltage Input Stage |
|---|---|
|
Use Scenario: Protecting 300 V DC intermediate bus in DIN-rail mounted AC/DC converters against load dump and lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between rectified DC output and bulk capacitor, absorbing transient energy before it reaches PWM controller ICs. Use Value: Limits voltage excursion to ≤414 V during 600 W surges, preventing gate oxide rupture in 500 V MOSFETs and ensuring >100,000 surge cycles per MIL-STD-883H Method 3015.8. |
Use Scenario: Safeguarding 24 V to 300 V battery-fed inputs of commercial vehicle telematics ECUs exposed to ISO 7637-2 Pulse 5a/b transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, positioned after fuse and before DC/DC converter, responding within <1 ns to suppress spikes up to 1000 V. Use Value: Maintains system uptime by preventing latch-up in microcontrollers during 100 V/50 ms load-dump events - validated per AEC-Q101 stress test conditions. |
| Telecom Rectifier Module Surge Protection | Renewable Energy Inverter DC Link Clamp |
|
Use Scenario: Clamping induced surges on -48 V telecom rectifier outputs caused by nearby lightning strikes or relay switching in central office cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS on secondary-side DC output, coordinated with upstream MOVs to handle fast-rising edges (>1 kV/µs) without thermal runaway. Use Value: Delivers consistent 414 V clamping across -40 °C to +125 °C ambient, enabling single-device protection without derating in outdoor cabinet deployments. |
Use Scenario: Protecting 300–400 V DC link capacitors in solar string inverters from grid-switching transients and PV array fault currents. IC Role / Device Role / Timing Role: Parallel-connected unidirectional TVS across DC bus, activated only during overvoltage events exceeding 300 V, minimizing leakage impact on MPPT efficiency. Use Value: Withstands 1000+ surge events at rated power while maintaining VWM stability - confirmed via accelerated life testing at 85 °C/85% RH for 1000 hours. |
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), but lower PPPM (400 W), higher VC (430 V), and no AEC-Q101 qualification. | Restricted to commercial-grade power supplies; not approved for automotive under-hood use. | Select when cost is prioritized over automotive qualification and surge margin is less critical. |
| 1.5SMC300A | Same VWM/VC specs, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), higher thermal mass, and no halogen-free option. | Requires PCB layout change; better suited for high-temperature environments where RθJA < 70 °C/W is needed. | Choose when board space permits larger footprint and higher thermal inertia is required for infrequent high-energy surges. |
Compared with SMAJ300A-E3/5B and 1.5SMC300A, P6SMB300AHM3_D/H uniquely combines AEC-Q101 qualification, halogen-free construction, and SMB footprint - making it the only drop-in solution for space-constrained, automotive-qualified 300 V DC bus protection without compromising surge rating or regulatory compliance.
Availability
P6SMB300AHM3_D/H is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronic control units, telecom rectifier modules, and renewable energy inverters requiring stable component supply with guaranteed long-term continuity.
Supply support for P6SMB300AHM3_D/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-energy transient suppression in compact SMT formats, designed specifically for automotive, industrial, and telecom systems where space, qualification, and repeatable clamping are non-negotiable.
FAQ
What is the clamping voltage of P6SMB300AHM3_D/H at its rated peak pulse current?
The P6SMB300AHM3_D/H has a maximum clamping voltage (VC) of 414 V at 1.45 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay Document 88370 and defines the upper voltage limit imposed on protected circuits during surge events. The P6SMB300AHM3_D/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is P6SMB300AHM3_D/H qualified for automotive applications?
Yes, P6SMB300AHM3_D/H is AEC-Q101 qualified, as indicated by the "HM3" suffix - denoting halogen-free, RoHS-compliant, and automotive-grade reliability. It undergoes stress testing per AEC-Q101 including HTGB, H3TRB, and surge endurance, making it suitable for under-hood ECUs and ADAS power inputs. The "D" in the suffix specifies qualification for the 250–540 V voltage range subset of the P6SMB family.
What does the "D/H" suffix mean in P6SMB300AHM3_D/H?
In P6SMB300AHM3_D/H, "D" indicates AEC-Q101 qualification for the high-voltage variant (250–540 V range), while "H" denotes packaging in 7-inch diameter plastic tape and reel with 750 units per reel. The "HM3" base suffix confirms halogen-free, RoHS-compliant construction and automotive qualification. This full suffix ensures traceability to Vishay's qualified manufacturing lot and packaging configuration.
Can P6SMB300AHM3_D/H be used in bidirectional configurations?
No, P6SMB300AHM3_D/H is a unidirectional TVS diode, as confirmed by its part number ending in "A" (not "CA") and absence of bidirectional VBR/VWM specifications in its electrical table. Bidirectional variants in the P6SMB series use the "CA" suffix (e.g., P6SMB300CA). Using P6SMB300AHM3_D/H in bidirectional applications would result in forward conduction during negative transients, causing failure.
What is the thermal resistance of P6SMB300AHM3_D/H, and how does it affect PCB layout?
P6SMB300AHM3_D/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay Document 88370. This value assumes minimum recommended pad layout; reducing pad area increases RθJA, potentially limiting surge repetition rate. Layout must follow DO-214AA land pattern guidelines to maintain thermal and mechanical reliability.
P6SMB300AHM3_D/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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/H FAQ
1.How can I place an order for P6SMB300AHM3_D/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB300AHM3_D/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_D/H reliable?
The price and inventory of P6SMB300AHM3_D/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_D/H is usually 5 days.
3.What payment methods are accepted for P6SMB300AHM3_D/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB300AHM3_D/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB300AHM3_D/H?
P6SMB300AHM3_D/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB300AHM3_D/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_D/H?
For technical support, including P6SMB300AHM3_D/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB300AHM3_D/H requirements.
6.How does Aetrix verify that P6SMB300AHM3_D/H is sourced from the original manufacturer or authorized distributors?
All P6SMB300AHM3_D/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_D/H meets industry standards.
7.What is the process for return or replacement of P6SMB300AHM3_D/H?
All P6SMB300AHM3_D/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB300AHM3_D/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_D/H part is unused and in its original packaging.
Return procedure for P6SMB300AHM3_D/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB300AHM3_D/H Tags
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