My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB56AHM3_B/I
- Part No.:
- P6SMB56AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56AHM3_B/I.pdf
- Description:
- 600W,56V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,222
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB56AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 56 V breakdown voltage (VBR = 53.2–58.8 V at IT = 1.0 mA), 77.0 V maximum clamping voltage (VC) at 7.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in automotive and industrial control systems.
For engineers reviewing the P6SMB56AHM3_B/I datasheet, P6SMB56AHM3_B/I pinout, P6SMB56AHM3_B/I application, or P6SMB56AHM3_B/I 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), unidirectional polarity with cathode band marking, and 150 °C maximum junction temperature - all critical for automotive-grade reliability validation and PCB layout thermal management.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its standoff threshold (VWM = 47.8 V), it avalanches rapidly (<1 ps response) to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable leakage performance (ID ≤ 1.0 μA at VWM) and low incremental surge resistance for consistent clamping under repetitive 0.01% duty-cycle pulses.
The device is rated for 100 A non-repetitive forward surge (IFSM, 8.3 ms half-sine) and dissipates 5.0 W continuously at TA = 50 °C on infinite heatsink. Its SMB package supports automated placement and meets MSL level 1 (260 °C peak reflow), with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 53.2–58.8 V at 1.0 mA test current - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| Standoff Voltage VWM | 47.8 V maximum - ensures no conduction during normal operation up to rated DC/AC working voltage |
| Clamping Voltage VC | 77.0 V at 7.8 A IPPM - limits transient voltage seen by protected ICs to safe levels during 10/1000 μs surges |
| Peak Pulse Power PPPM | 600 W with 10/1000 μs waveform - sustains high-energy transients without failure under defined surge conditions |
| Junction Temperature Range | −65 °C to +150 °C - enables deployment in under-hood automotive and high-ambient industrial environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 0.220" × 0.130" footprint and 0.086" height for space-constrained layouts |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive electronics per stress-test requirements including HTOL, TC, and HTRB |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode indicated by a band on the case body. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); mounting pad layout requires 5.0 mm × 5.0 mm copper pads per terminal per datasheet fig. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward bias; connected to system ground or low-side reference | Enables standard unidirectional clamping from protected line to ground; must be routed with low-inductance path to handle surge return current |
| Cathode | Current exit point during reverse avalanche; connected to protected line (e.g., 48 V rail or CAN bus) | Defines clamping node - voltage at this terminal is limited to ≤77.0 V during surge; marked by visible band on case |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients common in 12/24/48 V automotive and industrial power rails without degradation |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Glass passivated chip junction | Ensures long-term stability of leakage current and breakdown voltage across temperature and humidity stress |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture-related popcorning or delamination |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global automotive and industrial OEM supply chains |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs and gate drivers from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges above 47.8 V. Use Value: Limits voltage excursion to ≤77.0 V during 600 W surges, preventing damage to 60 V-rated MOSFETs and PMICs. |
Use Scenario: Safeguarding analog front-ends of pressure/temperature sensors in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) TVS on sensor signal lines to suppress ESD and inductive kickback. Use Value: Fast sub-nanosecond response prevents latch-up in precision op-amps and ADC inputs while maintaining signal integrity. |
| Telecom DC Power Input Protection | Motor Drive Control Signal Protection |
Use Scenario: Guarding 48 V PoE-powered equipment inputs against lightning-induced surges on outdoor Ethernet links. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converter input, coordinated with secondary MOV/GDT stages. Use Value: 600 W rating handles multi-kV induced surges; 150 °C TJMAX supports operation in sealed telecom enclosures. |
Use Scenario: Shielding isolated gate driver inputs (e.g., ISO5852S) from cross-talk and flyback spikes in BLDC inverter boards. IC Role / Device Role / Timing Role: Localized TVS at gate driver enable/signal pins to prevent false triggering or latch-up during PWM switching. Use Value: 77.0 V clamping ensures logic-level signals remain within VIH/VIL thresholds even during 100 A motor fault currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A-E3/5B | Same SMB package, 58 V VBR (min 55.1 V), 83.0 V VC at 7.2 A; not AEC-Q101 qualified | Commercial-grade only; lacks automotive qualification and halogen-free certification | Select when AEC-Q101 is not required and higher clamping voltage is acceptable for cost-sensitive industrial designs |
| 1.5SMC56A | Same 56 V rating, but SMC (DO-214AB) package - larger footprint (7.11 mm × 6.22 mm) and higher RθJA (75 °C/W) | Lower power density; less suitable for compact automotive PCBs requiring strict thermal management | Choose only if legacy SMC footprint compatibility is mandatory and board space allows larger package |
Compared with SMAJ58A-E3/5B and 1.5SMC56A, P6SMB56AHM3_B/I delivers automotive-grade reliability in the smallest standardized surface-mount TVS outline, with tighter VBR tolerance, lower clamping voltage, and verified halogen-free compliance - making it optimal for next-generation 48 V automotive and space-constrained industrial designs.
Availability
P6SMB56AHM3_B/I is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, telecom power supplies, and motor drive interfaces requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P6SMB56AHM3_B/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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for fast response, stable clamping, and robust thermal performance in harsh environments.
FAQ
What is the exact breakdown voltage range for P6SMB56AHM3_B/I?
The P6SMB56AHM3_B/I has a specified breakdown voltage VBR of 53.2 V to 58.8 V at a test current of 1.0 mA, per Vishay's datasheet revision 09-Jan-2024. This range ensures consistent avalanche initiation across manufacturing lots and temperature extremes, and directly determines the minimum overvoltage threshold at which the P6SMB56AHM3_B/I begins clamping.
Is P6SMB56AHM3_B/I suitable for automotive applications?
Yes, P6SMB56AHM3_B/I is AEC-Q101 qualified (indicated by the HM3 suffix), halogen-free, and RoHS-compliant - meeting stringent automotive reliability requirements for under-hood and body electronics. Its 150 °C maximum junction temperature and MSL Level 1 reflow rating make P6SMB56AHM3_B/I appropriate for engine control modules, ADAS camera power rails, and gateway ECUs.
What does the "B/I" suffix mean in P6SMB56AHM3_B/I?
The "B" denotes AEC-Q101 qualification for the P6SMB56AHM3_B/I series (applicable to 6.8 V–220 V unidirectional/bidirectional variants), while "I" specifies 3200-unit tape-and-reel packaging on 13-inch diameter reels. This distinguishes P6SMB56AHM3_B/I from smaller reels (e.g., "H" = 750 units) and non-automotive versions (e.g., "E3" or "M3").
How does the clamping voltage of P6SMB56AHM3_B/I compare to its standoff voltage?
P6SMB56AHM3_B/I has a maximum standoff voltage VWM of 47.8 V and a maximum clamping voltage VC of 77.0 V at 7.8 A. This 29.2 V differential ensures sufficient margin between normal operating voltage and clamping onset, preventing false triggering while guaranteeing that protected circuits never experience more than 77.0 V during surge events - a critical design parameter for P6SMB56AHM3_B/I selection.
Can P6SMB56AHM3_B/I replace older P6SMB56A variants in existing designs?
Yes, P6SMB56AHM3_B/I is a direct functional and mechanical replacement for earlier P6SMB56A variants in the same SMB package, with identical electrical characteristics and enhanced qualifications (AEC-Q101, halogen-free). No PCB layout changes are needed, though designers should verify that the HM3_B/I's tighter thermal resistance (RθJA = 100 °C/W) aligns with system-level thermal modeling for P6SMB56AHM3_B/I integration.
P6SMB56AHM3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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)
P6SMB56AHM3_B/I FAQ
1.How can I place an order for P6SMB56AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56AHM3_B/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 P6SMB56AHM3_B/I reliable?
The price and inventory of P6SMB56AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56AHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB56AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56AHM3_B/I?
P6SMB56AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56AHM3_B/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 P6SMB56AHM3_B/I?
For technical support, including P6SMB56AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56AHM3_B/I requirements.
6.How does Aetrix verify that P6SMB56AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB56AHM3_B/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 P6SMB56AHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB56AHM3_B/I?
All P6SMB56AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56AHM3_B/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 P6SMB56AHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB56AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56AHM3_B/I 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…
