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Vishay General Semiconductor - Diodes Division P6SMB400AHE3_A/I
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- Part No.:
- P6SMB400AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB400AHE3_A/I.pdf
- Description:
- TVS DIODE 342VWM 548VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,878
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Product details
Overview
P6SMB400AHE3_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 of sensitive electronics. It features a 400 V standoff voltage (VWM), 459 V minimum breakdown voltage (VBR), and clamps transients to 548 V at 1.10 A peak pulse current (IPPM) under 10/1000 μs waveform - deployed on power rails and signal lines in industrial motor drives and telecom infrastructure.
For engineers reviewing the P6SMB400AHE3_A/I datasheet, P6SMB400AHE3_A/I pinout, P6SMB400AHE3_A/I application, or P6SMB400AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification (HE3 suffix), SMB (DO-214AA) package compatibility with automated SMT assembly, 600 W peak pulse power rating, and low thermal resistance (RθJL = 20 °C/W) for reliable transient energy dissipation in space-constrained designs.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to deliver fast response (<1 ns) and low incremental surge resistance. Its 400 V stand-off voltage enables use on 380–420 V DC bus lines, while the 548 V clamping voltage ensures safe margin below typical 600 V IGBT/MOSFET breakdown thresholds.
The device is rated for 100 A non-repetitive forward surge current (IFSM) and supports continuous power dissipation of 5.0 W at 50 °C ambient on infinite heatsink. Thermal resistance from junction to lead (RθJL = 20 °C/W) confirms efficient heat transfer to PCB copper pads, critical for sustained surge duty cycles in industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 400 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit for protected line voltage. |
| VBR (Breakdown) | 380–420 V at 1 mA - Confirmed avalanche onset range; ensures predictable clamping initiation during overvoltage events. |
| VC (Clamping) | 548 V at IPPM = 1.10 A (10/1000 μs) - Peak voltage seen by downstream circuitry during worst-case surge; defines protection margin. |
| PPPM | 600 W - Peak pulse power handling capability; validates robustness against lightning-induced or inductive-switching transients. |
| IFSM | 100 A - Single half-sine surge current rating (8.3 ms); supports protection of rectifier stages and DC link inputs. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in high-ambient environments like enclosed industrial enclosures. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; confirms effective heat conduction to PCB pads without external heatsink. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or lower-potential rail in unidirectional configuration. | Provides reference node for clamping action; must be routed to low-impedance ground plane for effective surge shunting. |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., DC bus, signal trace). | Band-marked terminal; determines polarity-sensitive placement - reversal disables protection function. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability (vibration, temperature cycling, HTRB), enabling use in EV charging modules and under-hood control units. |
| 600 W peak pulse power | Withstands 10/1000 μs surges up to 1.10 A without degradation - sufficient for IEC 61000-4-5 Level 4 (4 kV) compliance testing. |
| Glass passivated junction | Ensures stable leakage current (<1 μA at VWM) and long-term parameter stability across 150 °C operating range. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns - eliminates pre-bake requirement. |
| SMB (DO-214AA) footprint | 0.205" × 0.130" (5.21 mm × 3.30 mm) outline fits high-density layouts; compatible with industry-standard pick-and-place equipment. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of IGBT gate drivers and DC link capacitors against switching transients and load dump events in variable-frequency drives. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed across DC bus rails (±400 V nominal) to limit voltage overshoot during rapid current interruption. Use Value: Clamps transients to ≤548 V, maintaining 152 V safety margin below 700 V IGBT breakdown rating and preventing cumulative gate oxide stress. |
Use Scenario: Surge suppression on -48 V DC input rails of base station power converters exposed to lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Primary-level transient suppressor mounted at board edge, upstream of DC/DC controllers and PMICs. Use Value: Absorbs 600 W pulses without failure, preserving downstream converter ICs and enabling compliance with GR-1089-CORE Section 4.5.2.2 (lightning surge). |
| EV Charging Stations | Industrial PLC I/O Modules |
Use Scenario: Overvoltage protection on AC/DC front-end rectifiers and DC fast-charging output stages subject to grid transients and regenerative braking feedback. IC Role / Device Role / Timing Role: Standoff-rated TVS on 400 V DC output bus, coordinated with MOVs and fuses in multi-stage protection architecture. Use Value: AEC-Q101 qualification ensures reliability under thermal cycling (−40 °C to +125 °C) and mechanical vibration per ISO 16750-3. |
Use Scenario: Signal line protection for analog sensor inputs (e.g., 4–20 mA loops) and digital communication ports (RS-485) in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on isolated signal paths, referenced to local ground via short trace. Use Value: Sub-1 ns response time prevents latch-up in precision op-amps and ADCs; <1 μA leakage avoids offset errors in microamp-level sensing circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ400A-E3/5B | Same VWM (400 V), identical SMB package, but rated for 400 W PPPM (vs. 600 W) and lacks AEC-Q101 qualification. | Not suitable for automotive or high-reliability industrial deployments requiring validated lifetime performance under thermal stress. | Select only for cost-sensitive commercial-grade applications where 400 W surge margin suffices and automotive qualification is unnecessary. |
| 1.5SMC400A | Higher package thermal resistance (RθJA ≈ 120 °C/W vs. 100 °C/W), same 400 V VWM, but no AEC-Q101 option and larger SMC (DO-214AB) footprint. | Requires larger PCB area and exhibits higher junction temperature rise under repeated surges - limiting use in compact, thermally constrained enclosures. | Consider only when existing SMC land pattern is fixed and 600 W rating is not required; verify thermal derating curves for target ambient conditions. |
Compared with SMAJ400A-E3/5B and 1.5SMC400A, P6SMB400AHE3_A/I delivers superior surge robustness (600 W), automotive-grade reliability (AEC-Q101), and optimized thermal performance in the smallest standardized SMB footprint - making it the preferred choice for next-generation industrial and EV infrastructure designs demanding long-term field stability.
Availability
P6SMB400AHE3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, EV charging stations, and PLC I/O modules requiring stable component supply with AEC-Q101 validation and consistent SMB (DO-214AA) packaging.
Supply support for P6SMB400AHE3_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 high-reliability diodes, MOSFETs, and passive components for power, signal, and protection applications.
The P6SMB Series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, automotive electrification, and telecom infrastructure where robustness, thermal stability, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum clamping voltage of the P6SMB400AHE3_A/I under standard test conditions?
The P6SMB400AHE3_A/I has a maximum clamping voltage (VC) of 548 V when subjected to a 10/1000 μs waveform at 1.10 A peak pulse current (IPPM). This value is measured per JEDEC standards and reflects the actual voltage imposed on protected circuitry during a defined surge event - critical for ensuring downstream components remain within their absolute maximum ratings. The P6SMB400AHE3_A/I maintains this clamping performance across its full operating temperature range (−65 °C to +150 °C).
Is the P6SMB400AHE3_A/I suitable for automotive applications?
Yes, the P6SMB400AHE3_A/I is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay documentation. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and mechanical shock validation - making it appropriate for under-hood and charging system applications in electric vehicles. The P6SMB400AHE3_A/I meets automotive reliability requirements without requiring additional qualification screening by the end user.
What does the "A/I" suffix in P6SMB400AHE3_A/I indicate?
The "A/I" suffix in P6SMB400AHE3_A/I specifies packaging and reel configuration: "A" denotes the revision code (per Vishay's ordering nomenclature), and "I" indicates 13-inch diameter plastic tape and reel packaging containing 3200 units. This format supports high-volume automated assembly and is traceable per Vishay's material categorization and RoHS compliance reporting. The P6SMB400AHE3_A/I is RoHS-compliant and halogen-free per Vishay's HM3-grade specifications.
How does the thermal performance of P6SMB400AHE3_A/I compare to similar SMB-packaged TVS diodes?
The P6SMB400AHE3_A/I features a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, significantly lower than many competing SMB devices (e.g., SMAJ series at ~30–40 °C/W). This enables more efficient heat transfer to PCB copper pads, reducing junction temperature rise during repetitive surge events. For designs with limited airflow or elevated ambient temperatures, the P6SMB400AHE3_A/I offers improved thermal headroom - directly extending operational lifetime in industrial power converters and EV charging modules.
Can P6SMB400AHE3_A/I be used in bidirectional configurations?
No, the P6SMB400AHE3_A/I is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA") and absence of bidirectional VBR/VWM ranges in its electrical characteristics table. Its cathode band marking and forward conduction behavior require correct polarity orientation - reverse connection will block normal operation and fail to clamp positive transients. For bidirectional protection at 400 V, a different part number such as P6SMB400CA would be required, though that variant is not offered in the HE3 automotive grade.
P6SMB400AHE3_A/I 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:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB400AHE3_A/I FAQ
1.How can I place an order for P6SMB400AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB400AHE3_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 P6SMB400AHE3_A/I reliable?
The price and inventory of P6SMB400AHE3_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 P6SMB400AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB400AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB400AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB400AHE3_A/I?
P6SMB400AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB400AHE3_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 P6SMB400AHE3_A/I?
For technical support, including P6SMB400AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB400AHE3_A/I requirements.
6.How does Aetrix verify that P6SMB400AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB400AHE3_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 P6SMB400AHE3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB400AHE3_A/I?
All P6SMB400AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB400AHE3_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 P6SMB400AHE3_A/I part is unused and in its original packaging.
Return procedure for P6SMB400AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB400AHE3_A/I Tags
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