My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB440AHM3_A/H
- Part No.:
- P6SMB440AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB440AHM3_A/H.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,716
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB440AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 440 V standoff voltage (VWM), 462 V maximum breakdown voltage (VBR), and 600 W peak pulse power (10/1000 μs). It clamps transients to 602 V at 1 A peak pulse current and is AEC-Q101 qualified for automotive use in high-voltage power line protection.
For engineers reviewing the P6SMB440AHM3_A/H datasheet, P6SMB440AHM3_A/H pinout, P6SMB440AHM3_A/H application, or P6SMB440AHM3_A/H equivalent, key selection criteria include its 440 V stand-off rating, 602 V clamping voltage at IPPM, AEC-Q101 qualification, halogen-free RoHS compliance, and SMB package thermal performance with RθJA = 100 °C/W.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed to protect downstream circuitry from high-energy transients such as load dump and ISO 7637-2 pulses in automotive 24 V and 48 V systems. Its glass-passivated junction ensures stable leakage and fast response (<1 ns).
It delivers 600 W peak pulse power under 10/1000 μs waveform at 0.01 % duty cycle, with thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads and 20 °C/W (junction-to-lead), enabling reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 440 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin in 48 V automotive or industrial DC bus applications. |
| VBR (Breakdown) | 418–462 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on during overvoltage events without premature conduction. |
| VC (Clamping) | 602 V at IPPM = 1 A - Measured clamping voltage limits stress on protected ICs or MOSFETs during surge conditions per IEC 61000-4-5. |
| PPPM | 600 W (10/1000 μs) - Sustains high-energy transients typical of automotive load dump (ISO 16750-2) and industrial switching noise. |
| ID (Leakage) | 1.0 μA max at VWM - Ultra-low reverse leakage preserves efficiency and avoids false triggering in high-impedance sensing circuits. |
| TJ max | 150 °C - Enables deployment in under-hood automotive environments and industrial enclosures without derating below full power. |
| Package | SMB (DO-214AA) - Standardized surface-mount footprint compatible with automated assembly; 5.59 mm × 4.06 mm body with 2.18 mm min. cathode band width. |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow), and JESD201 Class 2 whisker resistance. Cathode indicated by black band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Receives surge current during reverse-biased clamping; connects to protected line (e.g., battery rail); must be routed with low-inductance path to ground. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return; completes clamping path; requires robust grounding to sustain 1 A IPPM without voltage overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47; supports PPAP documentation for Tier 1 suppliers. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-609A Class 1; eliminates brominated flame retardants for safer end-of-life processing. |
| 600 W peak pulse power | Handles ISO 7637-2 Pulse 5a (load dump) up to 120 V/350 ms in 24 V systems without degradation when mounted per recommended pad layout. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns response), critical for protecting wide-bandwidth analog sensors and CAN transceivers. |
| Glass passivated junction | Ensures stable VBR and ID over lifetime and temperature; prevents parametric drift in harsh environments (−65 °C to +150 °C). |
Applications
| Automotive Power Rail Protection | Industrial DC Bus Surge Suppression |
|---|---|
Use Scenario: Protecting 48 V mild-hybrid vehicle battery management systems from load dump transients exceeding 120 V. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery input and DC/DC converter input stage. Use Value: Limits transient voltage to ≤602 V, preventing damage to 650 V-rated SiC MOSFET gate drivers and isolated ADC front-ends. |
Use Scenario: Safeguarding programmable logic controller (PLC) 24–48 V DC power inputs against inductive switching surges from solenoid valves. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main supply rail upstream of LDO regulators and microcontroller power domains. Use Value: Absorbs 600 W pulses without failure, maintaining system uptime and eliminating need for redundant fusing or MOV-based secondary protection. |
| Telecom Rectifier Output Clamping | Renewable Energy Charge Controller Input |
Use Scenario: Securing output of telecom -48 V rectifier modules against lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Final-stage TVS on rectifier output bus, coordinated with upstream GDT and series impedance. Use Value: Clamps to 602 V within nanoseconds, preserving integrity of downstream hot-swap controllers and PMBus voltage monitors. |
Use Scenario: Protecting solar charge controller inputs connected to 400 V PV string outputs from grid-switching transients and arc-fault events. IC Role / Device Role / Timing Role: Standoff-rated TVS on MPPT input stage, selected for 440 V VWM to accommodate 1.2× nominal string voltage. Use Value: Withstands repeated 600 W surges while maintaining <1 μA leakage, avoiding parasitic drain on open-circuit PV arrays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ440A-QH | Same VWM (440 V), lower PPPM (400 W), SMA package (smaller thermal mass, higher RθJA ≈ 150 °C/W). | Not AEC-Q101 qualified; suitable for commercial industrial use but not automotive under-hood deployment. | Select when board space is constrained and surge energy is limited to ≤400 W; verify thermal margin with reduced copper area. |
| 1.5SMC440A | Same VWM/VBR/VC specs, 1.5 kW PPPM, larger SMC (DO-214AB) package, non-AEC-Q101, halogen-containing. | Higher power handling enables single-device protection for 24 V load dump without parallel devices; lacks automotive qualification and halogen-free status. | Choose for cost-sensitive industrial designs requiring >600 W headroom; accept larger footprint and non-automotive compliance. |
Compared with SMAJ440A-QH and 1.5SMC440A, P6SMB440AHM3_A/H uniquely combines AEC-Q101 qualification, halogen-free construction, and 600 W capability in the compact SMB footprint-making it the only drop-in option for space-constrained, automotive-grade 48 V system protection.
Availability
P6SMB440AHM3_A/H is available at Aetrix Electronics and suitable for automotive battery management, industrial PLC power rails, telecom rectifier outputs, and renewable energy charge controller inputs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB440AHM3_A/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, power efficiency, and automotive-grade validation.
The P6SMB Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom infrastructure-delivering consistent clamping performance across temperature and lifetime with AEC-Q101 and RoHS/halogen-free variants.
FAQ
What is the maximum clamping voltage of the P6SMB440AHM3_A/H under peak pulse conditions?
The P6SMB440AHM3_A/H has a maximum clamping voltage (VC) of 602 V at 1 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB440AHM3_A/H maintains this clamping performance across its full operating temperature range.
Is the P6SMB440AHM3_A/H qualified for automotive applications?
Yes, the P6SMB440AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" (halogen-free, RoHS-compliant, AEC-Q101 qualified) and documented in the P6SMB Series datasheet revision 09-Jan-2024. It undergoes stress testing including HTGB, HTRB, and temperature cycling per AEC-Q101 requirements, making it suitable for under-hood and powertrain-related applications.
What does the "_A/H" suffix in P6SMB440AHM3_A/H indicate?
The "_A/H" suffix in P6SMB440AHM3_A/H denotes packaging and revision: "A" is the revision code per Vishay's internal documentation, and "H" specifies 7" diameter plastic tape and reel delivery (750 units per reel). The base "HM3" confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction, distinguishing it from commercial-grade "M3" or "E3" variants.
Can the P6SMB440AHM3_A/H be used in bidirectional configurations?
No, the P6SMB440AHM3_A/H is a unidirectional TVS diode, as indicated by its part number ending in "A" (not "CA") and explicit designation in the Vishay P6SMB datasheet. Bidirectional variants use the "CA" suffix (e.g., P6SMB440CA). Using P6SMB440AHM3_A/H in bidirectional signal lines would result in forward conduction during negative transients and potential failure.
What is the thermal resistance of the P6SMB440AHM3_A/H, and how does it affect PCB layout?
The P6SMB440AHM3_A/H 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 TJ ≤ 150 °C under 600 W pulse loads, designers must ensure adequate copper area, avoid thermal bottlenecks, and consider junction-to-lead (RθJL = 20 °C/W) for localized heat sinking. The P6SMB440AHM3_A/H datasheet provides exact pad layout dimensions in inches and millimeters.
P6SMB440AHM3_A/H 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)
P6SMB440AHM3_A/H FAQ
1.How can I place an order for P6SMB440AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB440AHM3_A/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 P6SMB440AHM3_A/H reliable?
The price and inventory of P6SMB440AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB440AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB440AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB440AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB440AHM3_A/H?
P6SMB440AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB440AHM3_A/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 P6SMB440AHM3_A/H?
For technical support, including P6SMB440AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB440AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB440AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB440AHM3_A/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 P6SMB440AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB440AHM3_A/H?
All P6SMB440AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB440AHM3_A/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 P6SMB440AHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB440AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB440AHM3_A/H 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 …
