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Vishay General Semiconductor - Diodes Division P6SMB56CAHM3_B/I
- Part No.:
- P6SMB56CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CAHM3_B/I.pdf
- Description:
- 600W,56V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,419
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Product details
Overview
P6SMB56CAHM3_B/I from Vishay General Semiconductor is a bidirectional 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 min/max = 53.2–58.8 V), 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 P6SMB56CAHM3_B/I datasheet, P6SMB56CAHM3_B/I pinout, P6SMB56CAHM3_B/I application, or P6SMB56CAHM3_B/I equivalent, this part delivers AEC-Q101-qualified transient suppression in SMB (DO-214AA) package with bidirectional symmetry, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive electronics and industrial power supply input stages.
Technical Context
This TVS operates bidirectionally with symmetrical clamping behavior in both polarities, enabling single-device protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at 47.8 V) and fast response time (<1.0 ns), while thermal resistance (RθJA = 100 °C/W) supports operation up to +150 °C junction temperature under defined PCB pad layout.
The device is rated for 600 W peak pulse power (10/1000 µs), derated linearly above 25 °C ambient per Fig. 2, and supports repetitive surge events at 0.01 % duty cycle. Its 20 °C/W junction-to-lead thermal resistance enables effective heat transfer to PCB copper pads, and it meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow compatibility (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 53.2–58.8 V at 1.0 mA test current - defines precise voltage threshold where avalanche conduction begins in both directions |
| Stand-off Voltage VWM | 47.8 V - maximum continuous reverse working voltage before significant leakage; ensures no false triggering during normal operation |
| Clamping Voltage VC | 77.0 V at 7.8 A IPPM - limits transient voltage seen by downstream circuitry during 10/1000 µs surge |
| Peak Pulse Power PPPM | 600 W - sustains high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure when mounted on 5.0 mm × 5.0 mm copper pads |
| Leakage Current ID | <1.0 µA at VWM - negligible standby power loss and minimal impact on high-impedance sensor or bias networks |
| Operating Temperature | −65 °C to +150 °C - validated for under-hood automotive and industrial environments requiring extended thermal range |
| AEC-Q101 Qualified | Yes - certified for automotive electronic modules per stress test requirements including HTOL, TCT, and ESD HBM/MM |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band omitted (bidirectional type).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; either terminal serves as anode or cathode depending on transient polarity - simplifies layout and eliminates orientation errors |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional 600 W surge capability | Enables single-device protection of AC lines, differential buses, or floating sensors without external polarity management |
| AEC-Q101 qualification (HM3_B/I suffix) | Validated reliability for automotive powertrain, body control, and ADAS modules requiring zero-defect field performance |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes protected circuit overvoltage margin - critical for 48 V systems and logic-level MOSFET gate protection |
| MSL Level 1, 260 °C reflow compatible | Supports standard SMT assembly without baking or special handling; reduces manufacturing cost and risk |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage across temperature and lifetime - essential for long-term system integrity |
Applications
| Automotive Power Supply Input | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle power rails from load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Primary clamping device placed at DC-DC converter input to limit voltage excursion to ≤77 V during 100 ms surges. Use Value: Prevents damage to buck controller ICs and gate drivers while maintaining system uptime during harsh electrical conditions. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in PLC I/O modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF typical) shunt clamp on 4–20 mA or 0–10 V output lines, responding in <1 ns. Use Value: Maintains signal fidelity and avoids false readings or latch-up in precision measurement circuits exposed to factory-floor ESD. |
| Telecom Line Interface | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding RS-485 transceivers connected to long outdoor cabling subject to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair (A/B) and common-mode (GND) to suppress common- and differential-mode transients. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (1 kV line-earth) without adding series impedance or distorting data signals. |
Use Scenario: Protecting high-side and low-side gate drivers in BLDC motor inverters from Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: Clamps gate-source voltage transients to ≤77 V, preventing unintended turn-on or oxide breakdown in SiC/GaN FETs. Use Value: Extends gate driver IC lifetime and avoids shoot-through failures in high-frequency, high-dV/dt motor control applications. |
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, 83 V VC at 7.2 A, 400 W PPPM - lower power rating and higher clamping voltage | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); not rated for ISO 7637-2 load dump | Select when cost sensitivity outweighs automotive surge margin and AEC-Q101 is not required |
| 1.5KE56CA | Through-hole DO-201 package, same 56 V VBR, 77 V VC, but 1500 W PPPM - larger footprint, higher surge capacity | Suitable for prototyping or high-surge legacy designs; incompatible with automated SMT assembly | Choose for lab validation or retrofit where board space allows and reflow compatibility is not needed |
Compared with SMAJ58CA and 1.5KE56CA, P6SMB56CAHM3_B/I uniquely combines AEC-Q101 qualification, 600 W SMT-rated surge capability, and bidirectional symmetry in a compact SMB footprint - making it the optimal choice for production automotive and industrial SMT designs demanding reliability, scalability, and compliance.
Availability
P6SMB56CAHM3_B/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom line protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB56CAHM3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series was engineered for high-energy transient suppression in automotive, industrial, and communications systems - delivering standardized 600 W surge capability, AEC-Q101 qualification, and consistent SMB packaging across 6.8 V to 220 V bidirectional variants.
FAQ
What does the "CA" suffix indicate in P6SMB56CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration: the device provides symmetrical transient suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity. This eliminates the need for polarity-aware placement and makes P6SMB56CAHM3_B/I ideal for protecting AC-coupled lines, differential interfaces, or floating sensor outputs where voltage reversals occur.
Is P6SMB56CAHM3_B/I suitable for automotive applications?
Yes - P6SMB56CAHM3_B/I carries the HM3_B/I suffix, confirming halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It has passed stress tests including high-temperature operating life, temperature cycling, and ESD (HBM ≥8 kV), making it approved for use in automotive powertrain, body electronics, and ADAS modules per OEM requirements.
What is the maximum clamping voltage of P6SMB56CAHM3_B/I and under what conditions is it specified?
The maximum clamping voltage of P6SMB56CAHM3_B/I is 77.0 V, measured at 7.8 A peak pulse current (IPPM) using a 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and reflects worst-case voltage seen by protected circuitry during standardized surge events such as ISO 7637-2 Pulse 1 and Pulse 5a.
How does the SMB (DO-214AA) package of P6SMB56CAHM3_B/I compare to SMA or SMC packages in terms of power handling?
The SMB package of P6SMB56CAHM3_B/I delivers 600 W peak pulse power with proper PCB copper pad layout (0.2" × 0.2"), matching SMA's rating but in a smaller footprint, while SMC supports up to 1500 W. SMB offers optimal balance of surge capability, board space efficiency, and automated assembly compatibility - making P6SMB56CAHM3_B/I well-suited for space-constrained automotive ECUs and industrial controllers.
Does P6SMB56CAHM3_B/I require a heatsink for continuous operation?
No - P6SMB56CAHM3_B/I is designed for transient-only operation and does not require a heatsink. Its 5.0 W steady-state power dissipation (PD) is managed via PCB copper thermal spreading. The device relies on short-duration surge energy absorption (≤100 ms), and its RθJA = 100 °C/W assumes minimum recommended 5.0 mm × 5.0 mm copper pads per terminal - sufficient for all specified transient conditions without additional thermal infrastructure.
P6SMB56CAHM3_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:
- -
- 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_B/I FAQ
1.How can I place an order for P6SMB56CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CAHM3_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 P6SMB56CAHM3_B/I reliable?
The price and inventory of P6SMB56CAHM3_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 P6SMB56CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB56CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CAHM3_B/I?
P6SMB56CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CAHM3_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 P6SMB56CAHM3_B/I?
For technical support, including P6SMB56CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB56CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB56CAHM3_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 P6SMB56CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB56CAHM3_B/I?
All P6SMB56CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CAHM3_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 P6SMB56CAHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB56CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CAHM3_B/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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