My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB440AHM3_C/H
- Part No.:
- P6SMB440AHM3_C/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB440AHM3_C/H.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,929
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB440AHM3_C/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for high-energy surge protection on power and signal lines. It features a 440 V standoff voltage (VWM), 462 V maximum breakdown voltage (VBR), 600 W peak pulse power rating (10/1000 μs), and clamps transients to 602 V at 1 A peak pulse current - deployed in automotive power supply rails, industrial motor drive control circuits, and telecom DC feed protection.
For engineers reviewing the P6SMB440AHM3_C/H datasheet, P6SMB440AHM3_C/H pinout, P6SMB440AHM3_C/H application, or P6SMB440AHM3_C/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, SMB (DO-214AA) package thermal resistance (RθJA = 100 °C/W), and unidirectional polarity with cathode band marking - critical for ESD and lightning surge hardening in high-reliability embedded systems.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (418–462 V), limiting transient energy to protected downstream circuitry. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and fast response time (<1 ns), while the low incremental surge resistance enables effective suppression of 10/1000 μs waveform surges up to 600 W.
The P6SMB440AHM3_C/H is rated for continuous operation from −65 °C to +150 °C junction temperature and meets MSL Level 1 per J-STD-020 (peak reflow ≤260 °C). Its SMB (DO-214AA) package uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, supporting automated SMT placement without whisker risk (JESD 201 Class 2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 376 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected line. |
| VBR (Breakdown Voltage) | 418–462 V at 1 mA test current - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 602 V at 1 A IPPM - Peak voltage seen by downstream ICs during full-rated 600 W surge; determines required system voltage headroom. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 μs waveform) - Energy-handling capacity for standardized lightning/surge waveforms per IEC 61000-4-5. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive or enclosed industrial enclosures. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; requires minimum 0.2" × 0.2" copper pads per terminal for rated power dissipation. |
| AEC-Q101 Qualified | Yes (HM3 suffix) - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); 0.220" × 0.155" mounting pad layout recommended.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; forms current path during reverse-biased avalanche clamping. |
| Cathode | High-side transient input | Connected to protected line (e.g., 48 V rail); marked with band; carries full surge current into ground via anode. |
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 line-to-ground) without derating in compact SMB footprint. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics where long-term reliability under thermal stress and vibration is mandatory. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life recycling requirements. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients, reducing stress on downstream MOSFETs or controllers. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C), eliminating bake-out steps in high-volume SMT production. |
Applications
| Automotive 48 V Power Distribution | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs from load dump and alternator surge events per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 48 V rail and chassis ground to shunt >100 V transients within nanoseconds. Use Value: Clamps to 602 V at 1 A, preserving integrity of 65 V-rated DC-DC converters and CAN transceivers upstream of the protection point. |
Use Scenario: Safeguarding 0–10 V or 4–20 mA analog sensor inputs in programmable logic controllers exposed to field wiring inductive kickback. IC Role / Device Role / Timing Role: Standoff-limited TVS on input front-end, operating below ADC reference voltage while responding <1 ns to fast transients. Use Value: Maintains <1 μA leakage at 376 V VWM, preventing signal offset drift; SMB package allows dense channel spacing on modular I/O cards. |
| Telecom DC Power Feed Protection | Motor Drive Gate Driver Supply Clamp |
Use Scenario: Securing −48 V DC feeding circuits in central office equipment against lightning-induced surges on long-distance copper pairs. IC Role / Device Role / Timing Role: Primary unidirectional TVS on feed line prior to DC/DC isolation stage, absorbing multi-kW surge energy. Use Value: 600 W rating sustains repeated 10/1000 μs surges without degradation; AEC-Q101 qualification ensures 15-year field life in telco infrastructure. |
Use Scenario: Clamping bootstrap or isolated gate driver supply rails (e.g., 15 V) in three-phase inverters subjected to Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-acting clamp referenced to local ground, limiting voltage overshoot on high-side driver IC supply pins. Use Value: 602 V clamping voltage is irrelevant here - instead, its 1.0 μA leakage at 376 V ensures no loading on low-current bias networks feeding 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/VBR/VC specs but lower PPPM (400 W), non-AEC-Q101, commercial-grade (E3 suffix), same SMB package. | Lacks automotive qualification and halogen-free certification; suitable only for non-automotive industrial or consumer use. | Select when cost sensitivity outweighs AEC-Q101 requirement and surge threat level is ≤Level 3 (2 kV) per IEC 61000-4-5. |
| 1.5SMC440AHE3_A/H | Higher PPPM (1500 W), same VWM/VBR/VC, AEC-Q101 qualified (HE3), but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm). | Requires PCB layout change due to larger footprint and higher thermal mass; better for sustained surge duty cycles. | Choose when system-level testing reveals 600 W insufficient and board space permits SMC package; retains same automotive qualification. |
Compared with P6SMB440AHM3_C/H, SMAJ440A-E3/5B trades automotive reliability and environmental compliance for lower cost and smaller footprint, while 1.5SMC440AHE3_A/H delivers triple the surge energy handling at the expense of PCB area and assembly compatibility - making P6SMB440AHM3_C/H the optimal balance of size, qualification, and 600 W capability for space-constrained automotive modules.
Availability
P6SMB440AHM3_C/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC analog input protection, and telecom DC feed protection requiring stable component supply across extended product lifecycles.
Supply support for P6SMB440AHM3_C/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, rectifiers, MOSFETs, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series was developed for high-power, surface-mount transient suppression in automotive, industrial, and telecom infrastructure - prioritizing AEC-Q101 qualification, halogen-free materials, and consistent clamping performance across temperature and lifetime.
FAQ
What is the maximum clamping voltage of the P6SMB440AHM3_C/H under full-rated surge conditions?
The P6SMB440AHM3_C/H has a maximum clamping voltage (VC) of 602 V at 1 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The P6SMB440AHM3_C/H maintains this clamping performance across its full operating temperature range (−65 °C to +150 °C) with minimal drift.
Is the P6SMB440AHM3_C/H suitable for automotive applications?
Yes, the P6SMB440AHM3_C/H is AEC-Q101 qualified (denoted by the HM3 suffix), meaning it has passed stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock specific to automotive electronics. It is explicitly rated for under-hood and power distribution module use in 48 V architectures. The P6SMB440AHM3_C/H also meets J-STD-020 MSL Level 1, enabling direct placement in automotive SMT lines without moisture sensitivity concerns.
What does the "HM3" suffix indicate in P6SMB440AHM3_C/H?
The "HM3" suffix in P6SMB440AHM3_C/H specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification. "H" denotes the tape-and-reel packaging option (750 units per 7" reel), "M3" confirms halogen-free molding compound and lead finish, and the full suffix distinguishes it from commercial-grade variants like E3 or M3-only parts. This makes the P6SMB440AHM3_C/H compliant with automotive OEM material disclosure requirements and green manufacturing standards.
How does the P6SMB440AHM3_C/H compare to bidirectional TVS diodes in surge protection?
The P6SMB440AHM3_C/H is unidirectional and intended for DC line protection where polarity is fixed - such as 48 V battery feeds or regulated DC supplies - offering tighter leakage control (<1 μA at VWM) and optimized clamping symmetry in one direction. Bidirectional variants (e.g., P6SMB440CA) are used for AC or floating signal lines but exhibit higher leakage and less precise VBR tolerance. For the P6SMB440AHM3_C/H, the cathode band clearly identifies polarity, simplifying layout and ensuring correct orientation during assembly.
What PCB layout guidelines apply to the P6SMB440AHM3_C/H for optimal thermal and electrical performance?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for the P6SMB440AHM3_C/H to achieve rated 600 W pulse power and maintain RθJA = 100 °C/W. Traces should be short and wide to minimize inductance, especially on the cathode side carrying surge current. Avoid thermal relief on pads, and ensure solder mask defined (SMD) stencil apertures match the DO-214AA outline. The P6SMB440AHM3_C/H must be placed near the entry point of the protected line, with ground connection routed directly to a solid plane - not daisy-chained - to preserve clamping speed.
P6SMB440AHM3_C/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:
- Obsolete
- 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:
- -
- 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_C/H FAQ
1.How can I place an order for P6SMB440AHM3_C/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB440AHM3_C/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_C/H reliable?
The price and inventory of P6SMB440AHM3_C/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_C/H is usually 5 days.
3.What payment methods are accepted for P6SMB440AHM3_C/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB440AHM3_C/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB440AHM3_C/H?
P6SMB440AHM3_C/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB440AHM3_C/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_C/H?
For technical support, including P6SMB440AHM3_C/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB440AHM3_C/H requirements.
6.How does Aetrix verify that P6SMB440AHM3_C/H is sourced from the original manufacturer or authorized distributors?
All P6SMB440AHM3_C/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_C/H meets industry standards.
7.What is the process for return or replacement of P6SMB440AHM3_C/H?
All P6SMB440AHM3_C/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB440AHM3_C/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_C/H part is unused and in its original packaging.
Return procedure for P6SMB440AHM3_C/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB440AHM3_C/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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
