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Vishay General Semiconductor - Diodes Division P6SMB440A01HM3_A/I
- Part No.:
- P6SMB440A01HM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB440A01HM3_A/I.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,725
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Product details
Overview
P6SMB440A01HM3_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 in power rails and signal lines. It features a 440 V standoff voltage (VWM), 462 V maximum breakdown voltage (VBR), 602 V clamping voltage (VC) at 1.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in industrial motor drives and telecom power supplies.
For engineers reviewing the P6SMB440A01HM3_A/I datasheet, P6SMB440A01HM3_A/I pinout, P6SMB440A01HM3_A/I application, or P6SMB440A01HM3_A/I equivalent, key selection criteria include its 440 V working voltage, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, SMB (DO-214AA) package, and unidirectional polarity with cathode band marking.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (VBR = 418–462 V), limiting transient-induced overvoltage to ≤602 V at 1.0 A IPPM. Its low incremental surge resistance and fast response time ensure effective suppression of ESD, lightning-induced surges, and inductive switching transients.
Designed for surface-mount assembly on standard PCBs, it uses glass-passivated junction technology and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101-qualified construction - suitable for automotive-grade power rail protection where reliability under thermal cycling and humidity is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 440 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC rail margin. |
| VBR (Breakdown Voltage) | 418–462 V at 1.0 mA - Voltage range at which avalanche conduction begins; ensures predictable turn-on behavior. |
| VC (Clamping Voltage) | 602 V at IPPM = 1.0 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy absorption capability with 10/1000 μs waveform at 0.01% duty cycle. |
| Package | SMB (DO-214AA) - Low-profile SMD outline (5.59 mm × 4.06 mm × 2.20 mm); compatible with automated pick-and-place and reflow soldering. |
| Qualification | AEC-Q101 qualified (HM3 suffix) - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock. |
| Thermal Resistance | RθJA = 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking on one end. Dimensions: 5.59 mm × 4.06 mm × 2.20 mm. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines directionality of clamping action. |
| Cathode | Reverse voltage input / Clamping output | Marked with band; connected to higher-potential rail (e.g., +440 V supply); conducts avalanche current to ground during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on high-voltage DC rails without thermal runaway. |
| Glass-passivated chip junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives; critical for automotive under-hood environments. |
| MSL Level 1 (260 °C peak) | Supports single-reflow assembly without preconditioning; eliminates moisture-related popcorning risk in production. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills EU ELV and China RoHS requirements; avoids brominated flame retardants in molding compound. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), enhancing protection of sensitive gate drivers and controllers. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of 400 V DC bus against inductive kickback from IGBT gate drivers and contactor switching. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between DC+ and chassis ground to limit transients to <602 V. Use Value: Prevents gate oxide rupture in 650 V IGBTs by holding voltage below 70% of rated VCES, extending system MTBF. |
Use Scenario: Surge suppression on -48 V telecom rectifier outputs exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on output rail referenced to system ground, absorbing differential-mode spikes up to 600 W. Use Value: Maintains uninterrupted operation during IEC 61000-4-5 2 kV/12 Ω tests without latch-up or degradation. |
| Automotive Battery Management | Renewable Energy Inverters |
Use Scenario: Overvoltage clamp on 400–450 V battery pack monitoring circuits in EV traction inverters. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional TVS on voltage sense inputs to protect ADC front-ends and isolation amplifiers. Use Value: Survives 1000+ thermal cycles (-40 °C to +125 °C) while maintaining VWM tolerance within ±5%, ensuring calibration integrity. |
Use Scenario: DC-link protection in solar string inverters subjected to grid-switching transients and nearby lightning strikes. IC Role / Device Role / Timing Role: High-VWM TVS mounted across PV+ and PV− inputs to clamp fast-rising surges before entering MPPT controller stage. Use Value: Limits voltage excursion to 602 V during 10/1000 μs events, preventing damage to 650 V SiC MOSFETs and gate drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ440A-E3/5B | Same VWM (440 V) and VC (602 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4; requires larger copper area for thermal management. | Select only if board space is constrained and surge threat level is ≤Level 2; verify thermal derating at >50 °C ambient. |
| 1.5KE440A | Through-hole DO-201 package; identical VWM/VBR/VC specs but higher IPPM (1.2 A) and same 600 W rating; no AEC-Q101 or halogen-free certification. | Not suitable for automated SMT lines; lacks automotive qualification and RoHS/halogen-free compliance required for Tier 1 BOMs. | Use only in legacy through-hole designs or non-automotive industrial equipment where qualification and assembly method are not constraints. |
Compared with SMAJ440A-E3/5B and 1.5KE440A, P6SMB440A01HM3_A/I delivers superior manufacturability (SMB SMT compatibility), automotive-grade reliability (AEC-Q101 + HM3), and thermal performance (RθJA = 100 °C/W vs. 140 °C/W), making it the preferred choice for new high-voltage DC designs requiring long-term supply continuity and regulatory compliance.
Availability
P6SMB440A01HM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive battery management systems, and renewable energy inverters requiring stable component supply, AEC-Q101 qualification, and halogen-free compliance.
Supply support for P6SMB440A01HM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series is engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where sustained surge immunity and long-term parametric stability are mandatory.
FAQ
What is the clamping voltage of P6SMB440A01HM3_A/I at its rated peak pulse current?
The clamping voltage (VC) of P6SMB440A01HM3_A/I is 602 V when subjected to a 10/1000 μs waveform at 1.0 A peak pulse current (IPPM). This value is measured under standardized test conditions per JEDEC standards and defines the maximum voltage imposed on the protected circuit during surge events. The P6SMB440A01HM3_A/I maintains this clamping performance across its qualified operating temperature range of -65 °C to +150 °C.
Is P6SMB440A01HM3_A/I suitable for automotive applications?
Yes, P6SMB440A01HM3_A/I is AEC-Q101 qualified, as confirmed by the HM3 suffix in its part number, indicating halogen-free, RoHS-compliant, and automotive-grade reliability testing. It has passed stress tests including temperature cycling, humidity bias, and mechanical shock - making it suitable for use in battery management systems, ADAS power domains, and other automotive subsystems operating up to 150 °C junction temperature.
What does the "HM3" suffix mean in P6SMB440A01HM3_A/I?
The "HM3" suffix in P6SMB440A01HM3_A/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" denotes the packaging format (13-inch tape and reel), "M3" specifies halogen-free molding compound and RoHS compliance, and the "_A/I" denotes revision A and tape-and-reel delivery in 3200-unit reels. This suffix directly maps to Vishay's ordering nomenclature in Document Number 88370.
What is the thermal resistance of P6SMB440A01HM3_A/I, and how does it affect layout design?
P6SMB440A01HM3_A/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. This value assumes standard FR-4 PCB with no internal planes; designers must increase copper area or add thermal vias if ambient temperatures exceed 50 °C or power dissipation approaches 5.0 W continuous rating. The P6SMB440A01HM3_A/I datasheet provides derating curves for elevated temperatures.
How does P6SMB440A01HM3_A/I differ from bidirectional variants like P6SMB440CA?
P6SMB440A01HM3_A/I is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where voltage polarity is fixed. In contrast, P6SMB440CA is bidirectional, offering symmetrical clamping for AC or floating signal lines, but with lower maximum VWM (185 V) and VBR (220 V) ratings. The P6SMB440A01HM3_A/I cannot substitute for P6SMB440CA in AC-coupled applications due to inherent polarity dependence and parameter mismatch.
P6SMB440A01HM3_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):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 602V
- Current - Peak Pulse (10/1000µs):
- 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)
P6SMB440A01HM3_A/I FAQ
1.How can I place an order for P6SMB440A01HM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB440A01HM3_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 P6SMB440A01HM3_A/I reliable?
The price and inventory of P6SMB440A01HM3_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 P6SMB440A01HM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB440A01HM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB440A01HM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB440A01HM3_A/I?
P6SMB440A01HM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB440A01HM3_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 P6SMB440A01HM3_A/I?
For technical support, including P6SMB440A01HM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB440A01HM3_A/I requirements.
6.How does Aetrix verify that P6SMB440A01HM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB440A01HM3_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 P6SMB440A01HM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB440A01HM3_A/I?
All P6SMB440A01HM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB440A01HM3_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 P6SMB440A01HM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB440A01HM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB440A01HM3_A/I Tags
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