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Vishay General Semiconductor - Diodes Division P6SMB400AHM3_D/H
- Part No.:
- P6SMB400AHM3_D/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB400AHM3_D/H.pdf
- Description:
- 600W,400V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,082
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Product details
Overview
P6SMB400AHM3_D/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 400 V standoff voltage (VWM), 459 V minimum breakdown voltage (VBR), and 600 W peak pulse power (10/1000 μs). It provides robust overvoltage protection for high-voltage DC rails in industrial power supplies and automotive ECU input stages.
For engineers reviewing the P6SMB400AHM3_D/H datasheet, P6SMB400AHM3_D/H pinout, P6SMB400AHM3_D/H application, or P6SMB400AHM3_D/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), 1.10 A peak pulse current (IPPM), 548 V maximum clamping voltage (VC), and halogen-free RoHS compliance - critical for automotive-grade surge immunity design.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-banded polarity, leveraging glass-passivated junction technology for stable avalanche behavior under repetitive transients. Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ = 150 °C) define derating requirements on standard PCB copper pads (0.2" × 0.2").
The device meets J-STD-020 MSL Level 1 and withstands 100 A non-repetitive forward surge (IFSM, 8.3 ms half-sine), confirming suitability for high-energy inductive switching events. Its low incremental surge resistance ensures minimal voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 400 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected line voltage. |
| VBR (min) | 459 V at IT = 1 mA - Guaranteed avalanche initiation threshold; ensures reliable turn-on above system nominal voltage. |
| VC | 548 V at IPPM = 1.10 A - Clamped voltage during 600 W transient; defines worst-case stress on downstream components. |
| PPPM | 600 W (10/1000 μs waveform) - Peak transient energy handling capacity; validates protection against IEC 61000-4-5 Level 4 surges. |
| IPPM | 1.10 A - Peak pulse current corresponding to 600 W clamping; used to size series impedance and verify margin vs. system fault current. |
| TJ max | 150 °C - Maximum junction temperature; requires thermal pad layout per DO-214AA footprint to sustain repetitive pulses. |
| AEC-Q101 | Qualified - Validated for automotive electronic control units per stress test requirements; supports PPAP documentation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; forms clamping loop with cathode during transient. |
| Cathode | High-side connection point | Connected to protected line (e.g., 400 V DC bus); avalanche conduction occurs from cathode to anode when VWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against severe lightning-induced surges (IEC 61000-4-5) without derating on standard PCB layouts. |
| AEC-Q101 qualified (HM3 suffix) | Validates reliability for automotive under-hood applications including engine control modules and battery management systems. |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and long-term parameter stability across temperature and lifetime cycling. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture-related popcorn failure or parametric shift. |
| Halogen-free & RoHS-compliant | Meets automotive OEM material declarations (e.g., GMW3172, Ford WSS-M99P9999-A1) and EU environmental compliance. |
Applications
| Industrial Power Supply Input Protection | Automotive Battery Line Protection |
|---|---|
Use Scenario: 400 V DC input stage of industrial AC/DC front-end converter exposed to load dump and switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between HV rail and chassis ground to limit transient overvoltage to <548 V. Use Value: Prevents damage to upstream rectifier diodes and downstream PWM controllers during 600 W surge events. |
Use Scenario: 12 V–48 V battery-fed ECU input in commercial vehicle with 24 V nominal system and 35 V load dump. IC Role / Device Role / Timing Role: Standoff-rated TVS on main power rail to suppress ISO 7637-2 Pulse 5a (load dump) up to 60 V. Use Value: Maintains functional safety integrity by clamping transients within 100 ns while surviving 100 A surge current. |
| Telecom DC Feeder Protection | Renewable Energy Inverter DC Link |
Use Scenario: -48 V telecom power feeders subject to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (cathode grounded) protecting data/power combo lines. Use Value: Limits voltage excursion to ≤548 V during 10/1000 μs surges, preserving isolation barriers and interface ICs. |
Use Scenario: High-voltage DC link (350–450 V) in solar string inverters exposed to grid-switching transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC bus, coordinated with MOVs and crowbar circuits. Use Value: Provides precise 400 V standoff and 548 V clamping to avoid false triggering while ensuring MOSFET gate oxide safety. |
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), lower PPPM (400 W), non-AEC-Q101, SMA package (smaller thermal mass) | Limited to commercial-grade, lower-energy transients; unsuitable for automotive PPAP or high-repetition-rate surges. | Select only for cost-sensitive, non-automotive designs where 400 W clamping margin suffices and board space is constrained. |
| 1.5KE400A | Through-hole DO-201 package, same VWM/VC, higher IFSM (200 A), no AEC-Q101, larger footprint | Requires wave soldering; better for prototyping or legacy through-hole boards but incompatible with automated SMT lines. | Choose when manual assembly or thermal robustness under sustained surge duty cycle (>0.01 %) is prioritized over SMT compatibility. |
Compared with SMAJ400A-E3/5B and 1.5KE400A, P6SMB400AHM3_D/H delivers AEC-Q101 validation, SMB package compatibility with high-density layouts, and guaranteed 600 W clamping performance - making it the sole option for production automotive SMT designs requiring full compliance traceability.
Availability
P6SMB400AHM3_D/H is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, telecom DC feeders, and renewable energy inverters requiring stable component supply with full AEC-Q101 documentation and halogen-free compliance.
Supply support for P6SMB400AHM3_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 automotive qualification.
The P6SMB Series targets high-energy transient suppression in harsh environments, designed specifically for automotive, industrial, and telecom applications demanding AEC-Q101 validation and stable clamping performance across temperature.
FAQ
What is the clamping voltage of P6SMB400AHM3_D/H at its rated peak pulse current?
The P6SMB400AHM3_D/H has a maximum clamping voltage (VC) of 548 V at its specified peak pulse current (IPPM) of 1.10 A, measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 600 W transient event and is verified per the Vishay datasheet revision 09-Jan-2024, page 2.
Is P6SMB400AHM3_D/H qualified for automotive applications?
Yes, P6SMB400AHM3_D/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It is validated for use in engine control units, battery management systems, and other under-hood automotive electronics per the Vishay P6SMB Series datasheet, section "Mechanical Data" and ordering information table on page 3.
What does the "D/H" suffix indicate in P6SMB400AHM3_D/H?
The "D" in P6SMB400AHM3_D/H denotes AEC-Q101 qualification for the high-voltage range (250 V to 540 V), while "H" specifies packaging in 7-inch plastic tape and reel (750 units per reel). This ordering code format is defined in the Vishay P6SMB Series datasheet, page 3, under "Ordering Information".
How does the thermal resistance of P6SMB400AHM3_D/H affect PCB layout?
P6SMB400AHM3_D/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, which assumes mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C during repetitive surges, designers must implement these minimum pad dimensions and avoid excessive trace length or isolation that increases thermal impedance.
Can P6SMB400AHM3_D/H be used in bidirectional protection circuits?
No, P6SMB400AHM3_D/H is a unidirectional TVS diode, as indicated by the absence of "CA" suffix and presence of cathode band marking. For bidirectional operation, Vishay specifies part numbers ending in "CA" (e.g., P6SMB400CA); using P6SMB400AHM3_D/H in reverse-biased configurations risks permanent junction damage due to lack of symmetrical avalanche capability.
P6SMB400AHM3_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):
- 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:
- 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)
P6SMB400AHM3_D/H FAQ
1.How can I place an order for P6SMB400AHM3_D/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB400AHM3_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 P6SMB400AHM3_D/H reliable?
The price and inventory of P6SMB400AHM3_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 P6SMB400AHM3_D/H is usually 5 days.
3.What payment methods are accepted for P6SMB400AHM3_D/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB400AHM3_D/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB400AHM3_D/H?
P6SMB400AHM3_D/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB400AHM3_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 P6SMB400AHM3_D/H?
For technical support, including P6SMB400AHM3_D/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB400AHM3_D/H requirements.
6.How does Aetrix verify that P6SMB400AHM3_D/H is sourced from the original manufacturer or authorized distributors?
All P6SMB400AHM3_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 P6SMB400AHM3_D/H meets industry standards.
7.What is the process for return or replacement of P6SMB400AHM3_D/H?
All P6SMB400AHM3_D/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB400AHM3_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 P6SMB400AHM3_D/H part is unused and in its original packaging.
Return procedure for P6SMB400AHM3_D/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB400AHM3_D/H Tags
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