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Vishay General Semiconductor - Diodes Division P6SMB56CAHM3_A/I
- Part No.:
- P6SMB56CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CAHM3_A/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,191
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Product details
Overview
P6SMB56CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 56 V breakdown voltage (VBR min/max = 53.2–58.8 V), 77.0 V maximum clamping voltage (VC) at 7.8 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB56CAHM3_A/I datasheet, P6SMB56CAHM3_A/I pinout, P6SMB56CAHM3_A/I application, or P6SMB56CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (HM3 suffix), SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) for board-level surge protection design.
Technical Context
This device operates as a voltage-clamped transient suppressor with symmetrical reverse/forward conduction behavior due to its bidirectional construction. It responds within picoseconds to ESD and lightning-induced surges, maintaining low incremental surge resistance and stable clamping performance across -65 °C to +150 °C junction temperature range.
The P6SMB56CAHM3_A/I uses a glass-passivated silicon junction and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its halogen-free, RoHS-compliant HM3 suffix confirms AEC-Q101 qualification for automotive applications, distinguishing it from commercial-grade E3/M3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1.0 mA test current - defines reliable conduction onset under transient stress |
| VWM | 47.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 77.0 V at 7.8 A - clamping voltage limiting downstream component stress during 10/1000 μs surge |
| PPPM | 600 W - peak pulse power handling capacity with 0.01% duty cycle, enabling robust surge immunity |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad sizing (0.2" × 0.2") |
| TJ max | +150 °C - maximum junction temperature supporting operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads solderable per J-STD-002. No polarity marking - bidirectional symmetry eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (symmetrical) | Either terminal serves as input/output node - no directional bias required for transient suppression |
| Terminal 2 | Anode / Cathode (symmetrical) | Paired with Terminal 1 to form bidirectional clamping path across protected line and ground/rail |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity constraints |
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) with margin when mounted per spec |
| AEC-Q101 qualification (HM3) | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring long-term reliability |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - reduces manufacturing overhead |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/FlexRay transceiver inputs against load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and chassis ground to shunt transients before reaching PHY layer. Use Value: Maintains signal integrity during 12 V system surges up to 77 V peak, preventing latch-up or damage to 5 V tolerant receivers. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to inductive switching noise. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing flyback energy from solenoid/relay coils coupled onto field wiring. Use Value: Limits induced voltage spikes to ≤77 V, ensuring compatibility with 30 V-rated input protection circuits and optocoupler front-ends. |
| Consumer Power Adapter Output Protection | Telecom Line Card Surge Suppression |
|
Use Scenario: Secondary-side overvoltage protection on 5–20 V DC output rails of wall adapters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Clamping device placed across output capacitor to prevent overvoltage propagation to USB ports or connected devices. Use Value: Responds in <1 ns to clamp transients while sustaining 600 W peak power, avoiding thermal runaway under repeated events. |
Use Scenario: Primary protection for Ethernet PHY or analog line interface ICs on telecom base station line cards. IC Role / Device Role / Timing Role: First-stage TVS on RJ-45 port traces, diverting common-mode surges to ground before reaching transformer or PHY. Use Value: Symmetrical clamping ensures equal protection for both tip/ring conductors, meeting GR-1089-CORE Level 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA | Same SMB package, 58 V VBR, 600 W rating, but only AEC-Q101 qualified in HE3/HM3 variants - SMAJ58CA lacks explicit HM3 suffix and automotive qualification documentation | Commercial-grade alternative; not validated for automotive temperature cycling or humidity testing | Select only for non-automotive industrial or consumer use where AEC-Q101 is not mandated |
| 1.5SMC56CA | Higher-power 1500 W rating in larger SMC (DO-214AB) package; identical 56 V VBR and bidirectional configuration | Requires PCB layout change due to 2.54 mm lead pitch vs. SMB's 2.29 mm; suited for higher-energy surge environments | Choose when system-level surge tests exceed IEC 61000-4-5 Level 4 and board space allows larger footprint |
Compared with SMAJ58CA and 1.5SMC56CA, P6SMB56CAHM3_A/I uniquely combines AEC-Q101 qualification, SMB footprint, and precise 56 V clamping in a halogen-free construction - making it optimal for space-constrained automotive modules requiring certified reliability without package redesign.
Availability
P6SMB56CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, consumer power adapter outputs, and telecom line card surge protection requiring stable component supply across production lifecycles.
Supply support for P6SMB56CAHM3_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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, automotive-qualified components.
The P6SMB series targets board-level transient suppression in automotive, industrial, and telecom systems - engineered for fast response, repeatable clamping, and compliance with AEC-Q101 and IEC surge standards.
FAQ
What is the breakdown voltage tolerance of P6SMB56CAHM3_A/I?
The P6SMB56CAHM3_A/I has a specified breakdown voltage range of 53.2 V to 58.8 V at 1.0 mA test current, corresponding to ±5% tolerance around the nominal 56 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable system-level surge margin calculations in designs using P6SMB56CAHM3_A/I.
Is P6SMB56CAHM3_A/I suitable for automotive applications?
Yes, P6SMB56CAHM3_A/I is AEC-Q101 qualified, as confirmed by the HM3 suffix and Vishay documentation. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev G, making P6SMB56CAHM3_A/I appropriate for under-hood and cabin electronics where reliability under thermal and electrical stress is critical.
What does the "CA" suffix indicate in P6SMB56CAHM3_A/I?
The "CA" suffix in P6SMB56CAHM3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical clamping in both polarities, with no anode/cathode distinction. This enables straightforward placement across AC signal lines, differential buses, or ungrounded power rails, unlike unidirectional "A" variants which require correct polarity orientation during assembly.
How does the SMB package of P6SMB56CAHM3_A/I affect thermal performance?
The SMB (DO-214AA) package of P6SMB56CAHM3_A/I delivers RθJA = 100 °C/W when mounted on 0.2" × 0.2" copper pads per Vishay's recommended layout. This thermal resistance determines safe power dissipation limits: at 25 °C ambient, P6SMB56CAHM3_A/I can sustain ~5 W continuously, but its 600 W pulse rating applies only for short-duration transients (<1 ms) with adequate PCB copper area.
What is the maximum clamping voltage of P6SMB56CAHM3_A/I under surge conditions?
The maximum clamping voltage of P6SMB56CAHM3_A/I is 77.0 V at 7.8 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events, and is critical for verifying that protected ICs remain within their absolute maximum ratings when P6SMB56CAHM3_A/I is deployed.
P6SMB56CAHM3_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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB56CAHM3_A/I FAQ
1.How can I place an order for P6SMB56CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CAHM3_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 P6SMB56CAHM3_A/I reliable?
The price and inventory of P6SMB56CAHM3_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 P6SMB56CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB56CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CAHM3_A/I?
P6SMB56CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CAHM3_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 P6SMB56CAHM3_A/I?
For technical support, including P6SMB56CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB56CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB56CAHM3_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 P6SMB56CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB56CAHM3_A/I?
All P6SMB56CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CAHM3_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 P6SMB56CAHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB56CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CAHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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