My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB350AHM3_A/I
- Part No.:
- P6SMB350AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB350AHM3_A/I.pdf
- Description:
- TVS DIODE 300VWM 482VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,375
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB350AHM3_A/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 maximum clamping voltage (VC) at 1.24 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB350AHM3_A/I datasheet, P6SMB350AHM3_A/I pinout, P6SMB350AHM3_A/I application, or P6SMB350AHM3_A/I equivalent, this device delivers AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and low incremental surge resistance for robust transient suppression in automotive and industrial environments.
Technical Context
The P6SMB350AHM3_A/I operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response to ESD and lightning-induced transients. Its breakdown voltage (VBR) is specified at 333–368 V (min/max) with 1 mA test current, and it exhibits a temperature coefficient of 0.110 %/°C - critical for thermal stability in wide-temperature deployments.
Designed for SMB (DO-214AA) package mounting on 5.0 mm × 5.0 mm copper pads, it supports repetitive surge duty cycles up to 0.01 % and withstands 100 A non-repetitive forward surge (IFSM, 8.3 ms half-sine). Junction temperature range spans −65 °C to +150 °C, with thermal resistance RθJA = 100 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 300 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown Voltage) | 333–368 V at 1 mA - precise avalanche initiation threshold for predictable clamping onset |
| VC (Clamping Voltage) | 482 V at IPPM = 1.24 A - limits transient voltage seen by downstream circuitry during surge events |
| PPPM (Peak Pulse Power) | 600 W with 10/1000 μs waveform - sustains high-energy surges without failure under defined test conditions |
| ID (Reverse Leakage) | 1.0 μA at VWM - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max. | +150 °C - enables reliable operation in under-hood automotive and industrial ambient environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated placement and reflow soldering |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection for unidirectional conduction path | Connects to protected line; clamps when voltage exceeds VBR relative to anode |
| Anode | Reference/ground return path | Typically tied to system ground or low-side rail; completes transient shunt path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern industrial and automotive PCB assemblies |
| 600 W peak pulse power (10/1000 μs) | Provides robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) |
| Glass-passivated junction | Ensures stable VBR over time and improved long-term reliability vs. epoxy-passivated alternatives |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., inductive switch-off) |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and MCU I/O lines against back-EMF spikes from brushed DC motors and solenoids. IC Role / Device Role / Timing Role: Unidirectional TVS placed between motor driver output and ground to clamp negative flyback voltage. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces while maintaining <1.0 μA leakage at 300 V standby. |
Use Scenario: Surge suppression on LIN bus lines and sensor supply rails exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing 12 V system transients up to 482 V clamping level without degrading signal integrity. Use Value: Enables compliance with ISO 7637-2 Pulse 1/2a/5a and AEC-Q100 stress tests due to AEC-Q101 qualification and 150 °C TJ rating. |
| Telecom Power Supplies | Industrial PLC Analog Input Modules |
|
Use Scenario: Input-stage protection for AC/DC front-ends subjected to lightning-induced surges on primary-side rectifier outputs. IC Role / Device Role / Timing Role: High-VWM TVS placed across bulk capacitor to limit overvoltage during line surges. Use Value: Withstands 300 V DC operating voltage and clamps to 482 V, preserving downstream converter FETs and controllers during 600 W transient events. |
Use Scenario: Protection of 4–20 mA current loop inputs against accidental 24 V DC miswiring and field-induced transients. IC Role / Device Role / Timing Role: Unidirectional suppressor connected between input terminal and ground to divert fault current away from precision op-amps and ADCs. Use Value: Low 1.0 μA leakage preserves loop accuracy; 482 V clamping prevents >10 V excursion at analog front-end, avoiding saturation or damage. |
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), SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when board space is constrained and automotive qualification is unnecessary |
| 1.5KE350A | Through-hole DO-201 package, same VWM/VC specs, 1.5 kW PPPM but larger size and manual assembly | Better thermal dissipation but incompatible with SMT-only production | Choose for prototyping or legacy through-hole designs requiring higher single-pulse energy handling |
Compared with SMAJ350A-E3/5B and 1.5KE350A, the P6SMB350AHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free compliance, SMB footprint, and 600 W pulse rating - making it optimal for volume SMT production in automotive and industrial applications demanding both reliability and manufacturability.
Availability
P6SMB350AHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and PLC analog input modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P6SMB350AHM3_A/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, efficiency, and application-specific performance.
The P6SMB Series was developed to deliver high-power, surface-mount transient suppression for automotive, industrial, and telecom systems where space, thermal performance, and qualification rigor are critical design constraints.
FAQ
What is the clamping voltage of the P6SMB350AHM3_A/I under maximum rated surge current?
The P6SMB350AHM3_A/I has a maximum clamping voltage (VC) of 482 V at 1.24 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during a full-rated transient event. The P6SMB350AHM3_A/I maintains this clamping performance across its specified operating temperature range and is validated per JEDEC and IEC surge test protocols.
Is the P6SMB350AHM3_A/I suitable for automotive applications?
Yes, the P6SMB350AHM3_A/I is AEC-Q101 qualified (indicated by the HM3 suffix), meaning it has passed rigorous stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD validation required for automotive electronics. Its −65 °C to +150 °C junction temperature range, halogen-free construction, and MSL Level 1 rating make the P6SMB350AHM3_A/I appropriate for under-hood and body-control module deployments.
What does the "_A/I" suffix mean in P6SMB350AHM3_A/I?
The "_A/I" suffix in P6SMB350AHM3_A/I denotes packaging configuration: "A" indicates the device is part of the standard P6SMB350A unidirectional variant, and "I" specifies 13-inch diameter plastic tape-and-reel delivery (3200 units per reel). This format supports high-volume automated pick-and-place assembly. The base HM3 designation confirms halogen-free, RoHS-compliant, and AEC-Q101-qualified construction.
How does the P6SMB350AHM3_A/I compare to bidirectional TVS diodes in the same series?
The P6SMB350AHM3_A/I is unidirectional and intended for DC-biased lines where polarity is fixed - such as positive supply rails or grounded signal paths. Bidirectional variants (e.g., P6SMB350CA) are used for AC-coupled or floating lines like data buses. The P6SMB350AHM3_A/I offers identical VWM/VBR/VC ratings to its bidirectional counterpart but lacks symmetrical clamping in reverse bias; its cathode band must be oriented correctly during layout.
What is the thermal resistance of the P6SMB350AHM3_A/I, and how does it affect layout?
The P6SMB350AHM3_A/I 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 maintain safe junction temperatures under repetitive surges, PCB layout must adhere to these pad dimensions and avoid excessive trace length or isolation. Derating curves in the datasheet (Fig. 2) show power capability decreases above 25 °C ambient - a key consideration for the P6SMB350AHM3_A/I in enclosed enclosures.
P6SMB350AHM3_A/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:
- Discontinued at Digi-Key
- 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_A/I FAQ
1.How can I place an order for P6SMB350AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB350AHM3_A/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_A/I reliable?
The price and inventory of P6SMB350AHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB350AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB350AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB350AHM3_A/I?
P6SMB350AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB350AHM3_A/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_A/I?
For technical support, including P6SMB350AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB350AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB350AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB350AHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB350AHM3_A/I?
All P6SMB350AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB350AHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P6SMB350AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB350AHM3_A/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
