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Vishay General Semiconductor - Diodes Division P6SMB350AHM3_D/I
- Part No.:
- P6SMB350AHM3_D/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB350AHM3_D/I.pdf
- Description:
- 600W,350V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,999
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Product details
Overview
P6SMB350AHM3_D/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for high-energy surge protection on power and signal lines. It features a 350 V standoff voltage (VWM), 482 V clamping voltage (VC) at 1.24 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive-grade, halogen-free, AEC-Q101-qualified applications such as DC bus protection in EV charging interfaces.
For engineers reviewing the P6SMB350AHM3_D/I datasheet, P6SMB350AHM3_D/I pinout, P6SMB350AHM3_D/I application, or P6SMB350AHM3_D/I equivalent, key selection criteria include verified clamping performance under repetitive transients, thermal derating above 25 °C, SMB (DO-214AA) package compatibility with automated SMT assembly, and AEC-Q101 qualification status for automotive power electronics.
Technical Context
This unidirectional TVS diode operates by avalanche breakdown to clamp transient overvoltages above its 350 V stand-off voltage (VWM), limiting downstream circuit voltage to ≤482 V at 1.24 A IPPM. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM).
Designed for 10/1000 μs surge waveforms at 0.01% duty cycle, it delivers 600 W peak pulse power with low incremental surge resistance and fast response time (<1.0 ns). Thermal resistance is 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads, supporting operation from –65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 350 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below system DC rail. |
| VBR (Breakdown Voltage) | 333–368 V at 1.0 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 482 V at IPPM = 1.24 A - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; critical for IC/MOSFET survival. |
| PPPM (Peak Pulse Power) | 600 W - Energy-handling capacity per IEC 61000-4-5 Level 4 surges; validated for repetitive 0.01% duty cycle. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - Minimal standby power loss and noise coupling; supports low-power sensor interface integrity. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and industrial power supplies without thermal shutdown. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" × 0.130" footprint; compatible with J-STD-020 MSL Level 1 reflow. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes clamping path during positive transients. |
| Cathode | High-side connection point | Connected to protected line (e.g., 400 V DC bus); avalanche conduction occurs when voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics including onboard chargers and DC-DC converters; supports PPAP documentation. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-020 MSL Level 1 (260 °C peak) and JESD201 Class 2 whisker resistance; suitable for green manufacturing. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Combination Wave (1.2/50 μs voltage, 8/20 μs current) surges up to Level 4 without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream SiC MOSFETs or gate drivers; improves system-level surge immunity margin. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; eliminates parameter drift in high-humidity or high-bias stress conditions. |
Applications
| EV Onboard Charger Input Protection | Industrial 400 V DC Bus Clamping |
|---|---|
|
Use Scenario: Protects AC/DC front-end rectifier and PFC stage against lightning-induced surges and load dump transients on 400 V nominal input rails. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and chassis ground; clamps transients within nanoseconds to prevent MOSFET avalanche failure. Use Value: Limits peak voltage to 482 V during 1.24 A surge, preserving 650 V SiC MOSFETs rated at 100% VDS(max) with 20% design margin. |
Use Scenario: Shields programmable logic controllers (PLCs) and motor drives from switching transients generated by contactor opening on 380–420 V industrial DC distribution buses. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across bus rails; absorbs repetitive 600 W pulses without thermal runaway. Use Value: Maintains <1.0 μA leakage at 350 V, avoiding false triggering of undervoltage lockout while enabling reliable 150 °C ambient operation. |
| Automotive Battery Management System (BMS) Cell Monitor Lines | Telecom Remote Radio Unit (RRU) Power Input |
|
Use Scenario: Safeguards isolated CAN and analog sensing lines in high-voltage BMS stacks exposed to ISO 7637-2 Pulse 5a (load dump) events. IC Role / Device Role / Timing Role: Low-leakage TVS on isolated supply rails feeding ADCs and isolators; prevents latch-up in precision measurement circuits. Use Value: Delivers 482 V clamping at 1.24 A with <1.0 μA leakage, ensuring ±0.1% measurement accuracy remains unaffected during surge events. |
Use Scenario: Protects 48 V DC input of outdoor RRUs against induced surges from nearby lightning strikes on tower-mounted antenna feeds. IC Role / Device Role / Timing Role: Primary surge suppression device upstream of DC/DC converter; coordinates with secondary MOVs for staged energy absorption. Use Value: Provides repeatable 600 W clamping performance with 100 °C/W RθJA on standard PCB pads, eliminating need for heatsinking in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ350A-E3/5B | Same VWM (350 V), lower PPPM (400 W), non-AEC-Q101, commercial-grade only | Limited to non-automotive industrial use; lacks halogen-free certification and MSL Level 1 reflow rating | Select when cost sensitivity outweighs automotive qualification and 600 W surge requirement |
| 1.5SMC350AHE3_A/H | Same VWM (350 V), same PPPM (600 W), AEC-Q101 qualified, but larger SMC (DO-214AB) package | Requires PCB layout change due to 0.295" × 0.230" footprint vs. SMB's 0.220" × 0.130"; higher RθJA (75 °C/W) | Choose only if existing design uses SMC footprint or requires higher thermal mass for sustained pulse trains |
Compared with SMAJ350A-E3/5B and 1.5SMC350AHE3_A/H, P6SMB350AHM3_D/I uniquely combines AEC-Q101 qualification, halogen-free compliance, SMB package size, and verified 600 W clamping in a single solution - enabling drop-in replacement in space-constrained automotive and industrial power modules without layout or thermal redesign.
Availability
P6SMB350AHM3_D/I is available at Aetrix Electronics and suitable for EV onboard chargers, industrial 400 V DC bus systems, and telecom remote radio units requiring stable component supply with full automotive qualification traceability.
Supply support for P6SMB350AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom power systems - engineered for robustness under repetitive surge stress and extended temperature operation.
FAQ
What is the clamping voltage of the P6SMB350AHM3_D/I under maximum rated surge current?
The P6SMB350AHM3_D/I has a maximum clamping voltage (VC) of 482 V at its rated peak pulse current (IPPM) of 1.24 A, measured using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream component voltage margining in designs using the P6SMB350AHM3_D/I.
Is the P6SMB350AHM3_D/I certified for automotive applications?
Yes, the P6SMB350AHM3_D/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3_D", where "D" denotes AEC-Q101 qualification for high-voltage variants (250 V to 540 V). It meets all stress tests including temperature cycling, humidity bias, and mechanical shock required for under-hood and powertrain applications.
What does the "HM3_D/I" suffix in P6SMB350AHM3_D/I signify?
The "HM3" indicates halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance; "D" specifies AEC-Q101 qualification for the 250–540 V voltage range; "I" denotes packaging in 13-inch tape-and-reel format (3200 units per reel), optimized for high-volume SMT assembly lines.
Can the P6SMB350AHM3_D/I be used in bidirectional configurations?
No - the P6SMB350AHM3_D/I is strictly unidirectional, as indicated by the "A" suffix (not "CA") and absence of symmetrical breakdown data in its electrical characteristics table. For bidirectional protection at 350 V, a different series such as the P6SMB350CA would be required, but no CA variant exists for 350 V in the P6SMB family.
What is the thermal resistance and recommended pad layout for the P6SMB350AHM3_D/I?
The P6SMB350AHM3_D/I 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, per Vishay's test condition. The recommended mounting pad layout matches the SMB (DO-214AA) outline: 0.086" minimum width, 0.220" reference length, with solder mask defined pads to maximize thermal conduction and minimize voiding.
P6SMB350AHM3_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):
- 300V
- Voltage - Breakdown (Min):
- 333V
- Voltage - Clamping (Max) @ Ipp:
- 482V
- Current - Peak Pulse (10/1000µs):
- 1.24A
- 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)
P6SMB350AHM3_D/I FAQ
1.How can I place an order for P6SMB350AHM3_D/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB350AHM3_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 P6SMB350AHM3_D/I reliable?
The price and inventory of P6SMB350AHM3_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 P6SMB350AHM3_D/I is usually 5 days.
3.What payment methods are accepted for P6SMB350AHM3_D/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB350AHM3_D/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB350AHM3_D/I?
P6SMB350AHM3_D/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB350AHM3_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 P6SMB350AHM3_D/I?
For technical support, including P6SMB350AHM3_D/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB350AHM3_D/I requirements.
6.How does Aetrix verify that P6SMB350AHM3_D/I is sourced from the original manufacturer or authorized distributors?
All P6SMB350AHM3_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 P6SMB350AHM3_D/I meets industry standards.
7.What is the process for return or replacement of P6SMB350AHM3_D/I?
All P6SMB350AHM3_D/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB350AHM3_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 P6SMB350AHM3_D/I part is unused and in its original packaging.
Return procedure for P6SMB350AHM3_D/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB350AHM3_D/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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