My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB400A-M3/52
;;2.jpg)
- Part No.:
- P6SMB400A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB400A-M3/52.pdf
- Description:
- TVS DIODE 342VWM 548VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,202
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB400A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 400 V standoff voltage (VWM), 420 V minimum breakdown voltage (VBR), and 548 V maximum clamping voltage (VC) at 1.10 A peak pulse current (IPPM). It delivers 600 W peak pulse power with a 10/1000 µs waveform and is optimized for protecting power rails and signal lines in industrial power supplies and motor drive circuits against ESD and inductive switching transients.
For engineers reviewing the P6SMB400A-M3/52 datasheet, P6SMB400A-M3/52 pinout, P6SMB400A-M3/52 application, or P6SMB400A-M3/52 equivalent, key selection criteria include its 400 V stand-off rating, low 1.10 A IPPM threshold for precise overvoltage triggering, halogen-free RoHS-compliant M3 construction, and AEC-Q101 qualification readiness via HM3 suffix variants.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction for stable avalanche behavior under repetitive surge conditions. Its thermal resistance (RθJA = 100 °C/W) and 150 °C max junction temperature support operation in high-ambient environments when mounted on 5.0 mm × 5.0 mm copper pads.
The device complies with J-STD-020 MSL Level 1 (260 °C peak reflow), features matte tin-plated leads solderable per J-STD-002, and meets JESD201 Class 2 whisker resistance. Its 0.110 %/°C VBR temperature coefficient ensures predictable voltage drift across temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 400 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 380–420 V at 1.0 mA - Confirmed avalanche initiation range; ensures reliable turn-on within ±5 % of nominal rating. |
| VC (Clamping) | 548 V at 1.10 A - Maximum voltage seen by protected circuit during 10/1000 µs transient; limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability under standardized 10/1000 µs waveform; supports robust surge immunity per IEC 61000-4-5. |
| IPPM | 1.10 A - Peak pulse current corresponding to VC; enables accurate coordination with upstream fuses or current-limiting elements. |
| TJ max | +150 °C - Maximum junction temperature; permits use in enclosed industrial enclosures without forced cooling. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; requires ≥5.0 mm × 5.0 mm copper pad area per terminal for rated derating. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads. Cathode indicated by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential side of protected line. | Used only during forward conduction (e.g., during fault reset or bidirectional variant operation); not active in normal unidirectional clamping. |
| Cathode | Current exit point in reverse breakdown; connected to higher-potential side (e.g., VIN rail). | Defines clamping reference node; must be routed with low-inductance path to ground or return plane to maintain VC integrity. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against severe lightning-induced surges and high-energy inductive kickback in AC/DC front-ends and motor controllers. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage performance under thermal cycling and humidity exposure in industrial environments. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow assembly without preconditioning or special handling requirements. |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills environmental compliance mandates for export to EU, China, and other regulated markets without compromising electrical performance. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection fidelity for sensitive gate drivers and ADC inputs. |
Applications
| Industrial Power Supply Input Protection | Motor Drive DC Bus Clamping |
|---|---|
Use Scenario: Protecting rectified AC input stages in DIN-rail power supplies against line surges and load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between +VIN and chassis ground to limit transient overvoltage on bulk capacitor and controller ICs. Use Value: Withstands 600 W pulses while clamping to ≤548 V, preventing damage to 600 V-rated MOSFETs and bridge rectifiers. |
Use Scenario: Suppressing inductive kickback from IGBT gate drivers and freewheeling diodes in servo amplifier outputs. IC Role / Device Role / Timing Role: Fast-response clamping element across DC bus rails to absorb energy from rapid current interruption in H-bridge legs. Use Value: 1.10 A IPPM threshold ensures early conduction before bus voltage exceeds 550 V, safeguarding 650 V-rated power semiconductors. |
| Telecom Line Card Surge Protection | Renewable Energy Inverter DC Link |
Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from induced surges on outdoor cabling in base station equipment. IC Role / Device Role / Timing Role: Secondary-level TVS on isolated DC supply rails feeding PHY ICs, coordinated with primary GDT or MOV protection. Use Value: 400 V VWM allows compatibility with 36–48 V nominal telecom systems while providing headroom for 100 V transients. |
Use Scenario: Safeguarding DC link capacitors and gate drivers in solar string inverters exposed to grid-switching transients and lightning coupling. IC Role / Device Role / Timing Role: Parallel clamping device across 400–600 V DC bus to clamp fast transients before they propagate to IGBT modules or isolation amplifiers. Use Value: 548 V VC aligns with 600 V system insulation ratings, enabling design margin without over-specifying downstream components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400A | Same VWM/VC specs but rated for 600 W with 1.0 ms pulse width; slightly higher VBR min (380 V vs. 380 V) and identical IPPM (1.10 A). | Identical clamping behavior and footprint; differs only in JEDEC qualification scope and minor packaging markings. | Select SMBJ400A if requiring legacy qualification documentation or dual-sourcing from alternate foundry lines. |
| 1.5SMC400A | Higher package thermal resistance (RθJA ≈ 125 °C/W), larger SMC (DO-214AB) footprint, and same 400 V/548 V ratings but lower IPPM (1.05 A). | Requires PCB layout change due to 7.11 mm × 6.22 mm SMC outline vs. SMB's 4.57 mm × 3.94 mm; suited for less space-constrained designs. | Choose 1.5SMC400A only when board real estate allows larger package and higher thermal margin is needed beyond SMB's 100 °C/W rating. |
Compared with SMBJ400A and 1.5SMC400A, P6SMB400A-M3/52 offers identical electrical protection performance in a smaller SMB footprint, halogen-free construction, and direct compatibility with automated placement systems-making it optimal for high-density industrial and telecom PCBs where size, RoHS compliance, and assembly efficiency are critical.
Availability
P6SMB400A-M3/52 is available at Aetrix Electronics and suitable for industrial power supplies, motor control systems, telecom line cards, and renewable energy inverters requiring stable component supply, halogen-free compliance, and repeatable surge immunity performance.
Supply support for P6SMB400A-M3/52 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, ruggedness, and automotive-grade qualification.
The P6SMB Series was engineered for high-energy transient suppression in harsh industrial and transportation environments, supporting AEC-Q101 qualification paths and offering scalable voltage coverage from 6.8 V to 540 V in compact SMB packages.
FAQ
What is the maximum clamping voltage of the P6SMB400A-M3/52 under a 10/1000 µs transient?
The P6SMB400A-M3/52 has a maximum clamping voltage (VC) of 548 V when subjected to its rated peak pulse current of 1.10 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C with specified mounting conditions (0.2" × 0.2" copper pads). The P6SMB400A-M3/52 maintains this clamping performance across its full operational temperature range, making it suitable for protecting 600 V-class power components.
Is the P6SMB400A-M3/52 RoHS-compliant and halogen-free?
Yes, the P6SMB400A-M3/52 carries the M3 suffix, indicating it is both RoHS-compliant and halogen-free per IEC 61249-2-21. This construction meets environmental regulations for export to the EU, China, and other jurisdictions without sacrificing electrical or thermal performance. The P6SMB400A-M3/52 uses matte tin-plated leads and complies with JESD201 Class 2 whisker resistance testing.
Does the P6SMB400A-M3/52 have AEC-Q101 qualification?
The base P6SMB400A-M3/52 is not AEC-Q101 qualified; however, Vishay offers the HM3 suffix variant (e.g., P6SMB400AHM3_D/H) which is fully AEC-Q101 qualified for automotive applications. The P6SMB400A-M3/52 shares identical electrical characteristics and package dimensions with its HM3 counterpart, differing only in test reporting and traceability documentation.
What is the thermal resistance of the P6SMB400A-M3/52, and how does it affect PCB layout?
The P6SMB400A-M3/52 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. To achieve rated power dissipation, the P6SMB400A-M3/52 requires these minimum pad dimensions and should avoid excessive copper isolation or thermal vias that disrupt heat spreading. Layout deviations increase junction temperature and reduce surge endurance.
How does the P6SMB400A-M3/52 compare to bidirectional TVS diodes like P6SMB400CA?
The P6SMB400A-M3/52 is unidirectional and features a cathode band for polarity identification, whereas P6SMB400CA is bidirectional with no polarity marking and symmetric clamping in both directions. The P6SMB400A-M3/52 offers tighter VBR tolerance (380–420 V) and is preferred for DC rail protection where polarity is fixed. Bidirectional variants are used in AC-coupled signal lines or floating buses where voltage reversal occurs.
P6SMB400A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 548V
- Current - Peak Pulse (10/1000µs):
- 1.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB400A-M3/52 FAQ
1.How can I place an order for P6SMB400A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB400A-M3/52 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 P6SMB400A-M3/52 reliable?
The price and inventory of P6SMB400A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB400A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB400A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB400A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB400A-M3/52?
P6SMB400A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB400A-M3/52 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 P6SMB400A-M3/52?
For technical support, including P6SMB400A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB400A-M3/52 requirements.
6.How does Aetrix verify that P6SMB400A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB400A-M3/52 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 P6SMB400A-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB400A-M3/52?
All P6SMB400A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB400A-M3/52, 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 P6SMB400A-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB400A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB400A-M3/52 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
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 …
