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Vishay General Semiconductor - Diodes Division P6SMB56CAHM3_B/H
- Part No.:
- P6SMB56CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CAHM3_B/H.pdf
- Description:
- 600W,56V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,812
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Product details
Overview
P6SMB56CAHM3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 56 V breakdown voltage (VBR min/max = 53.2–58.8 V at 1 mA), 47.8 V stand-off voltage (VWM), 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 - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial electronics.
For engineers reviewing the P6SMB56CAHM3_B/H datasheet, P6SMB56CAHM3_B/H pinout, P6SMB56CAHM3_B/H application, or P6SMB56CAHM3_B/H equivalent, this device delivers AEC-Q101 qualified transient suppression in halogen-free, RoHS-compliant construction with MSL Level 1 moisture sensitivity and 260 °C lead-free reflow compatibility - critical for automotive-grade ECU and ADAS sensor line protection.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports fast clamping response under repetitive 0.01% duty-cycle transients.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. Its 600 W peak pulse power capability is validated per IEC 61000-4-5 and meets automotive load-dump immunity requirements when deployed with appropriate PCB layout and trace inductance control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 53.2–58.8 V at 1 mA test current - defines precise voltage threshold where clamping initiates in both directions |
| Stand-off Voltage VWM | 47.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| 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 such as ISO 7637-2 Pulse 5a without failure |
| Junction Temperature Range | −65 °C to +150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and space-constrained PCBs |
| AEC-Q101 Qualified | Yes - certified for automotive electronic systems per stress test requirements including HTOL, TCT, and ESD |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); MSL Level 1, 260 °C peak reflow profile compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No marking on device; symmetrical terminals enable polarity-agnostic placement on PCB |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | No marking on device; identical physical terminal as Anode - bidirectional operation requires no orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., CAN, RS-485), and ungrounded power rails without polarity concerns |
| 600 W peak pulse power | Withstands ISO 7637-2 Load Dump Pulse 5a (12 V system) and IEC 61000-4-5 surges up to 4 kV (2 Ω source) |
| AEC-Q101 qualification | Validated for automotive use including high-temp storage, temperature cycling, and accelerated life testing per JESD22 standards |
| Halogen-free & RoHS-compliant | Meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1) and EU RoHS Directive 2011/65/EU |
| Low clamping ratio (VC/VBR) | 1.45 (77.0 V / 53.2 V) - minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver signal lines and analog sensor outputs (e.g., pressure, temperature) from ESD and load dump-induced transients in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching transceiver IC. Use Value: Prevents latch-up or permanent damage to 5 V or 3.3 V interface ICs during ISO 10605 ESD events (±8 kV contact) and ISO 7637-2 Pulse 1/2/5a. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers exposed to field wiring transients and ground bounce. IC Role / Device Role / Timing Role: Primary transient suppressor mounted adjacent to input terminal block to limit voltage excursion to ≤77 V during 1 kV/500 A surge events. Use Value: Maintains signal integrity and prevents ADC saturation or op-amp rail-to-rail clipping during industrial surge tests per IEC 61000-4-4/5. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY magnetics and PoE interface circuitry from lightning-induced surges and induced transients on outdoor cabling. IC Role / Device Role / Timing Role: Secondary-level TVS placed after gas discharge tube (GDT) to handle residual energy and provide low-clamp protection for PHY ICs. Use Value: Reduces clamping voltage to safe levels (<80 V) for 100BASE-TX/T1 PHYs rated for 3.3 V supply rails and 1.8 V core voltages. |
Use Scenario: Suppressing commutation spikes from brushed DC motors and relay coils in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Snubber-style clamp across motor terminals or relay coil to absorb inductive kickback energy before it couples into MCU GPIO or driver ICs. Use Value: Eliminates need for external flyback diodes in compact designs while maintaining <100 ns response time and 600 W surge handling. |
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 PPPM, but not AEC-Q101 qualified; higher VC (93.6 V) | Limited to commercial/industrial use; unsuitable for automotive ECUs requiring AEC-Q101 certification | Select when AEC-Q101 is not required and higher clamping voltage is acceptable for 24 V system protection |
| 1.5SMC58CA | Higher power (1500 W), same VBR range, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm) | Requires PCB area increase; better suited for high-energy surge zones like main power entry | Choose when system-level surge testing exceeds 600 W requirements and board space permits larger footprint |
Compared with SMAJ58CA and 1.5SMC58CA, P6SMB56CAHM3_B/H uniquely combines AEC-Q101 qualification, halogen-free construction, and optimized 77.0 V clamping in the compact SMB package - making it the preferred choice for space-constrained, automotive-grade signal line protection where reliability and regulatory compliance are mandatory.
Availability
P6SMB56CAHM3_B/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog input protection, and telecom line card surge mitigation requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB56CAHM3_B/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, TVS devices, and optoelectronics with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P6SMB Series targets cost-sensitive, high-reliability transient suppression in automotive, industrial, and communications equipment - engineered for robustness under harsh electrical environments and seamless integration into automated SMT lines.
FAQ
What is the breakdown voltage tolerance for P6SMB56CAHM3_B/H?
The P6SMB56CAHM3_B/H has a specified breakdown voltage (VBR) range of 53.2 V to 58.8 V at 1 mA test current, representing ±5% tolerance around the nominal 56 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in safety-critical automotive applications where overvoltage thresholds must be precisely controlled.
Is P6SMB56CAHM3_B/H suitable for protecting CAN bus lines?
Yes, P6SMB56CAHM3_B/H is well-suited for CAN bus protection due to its bidirectional operation, low clamping voltage (77.0 V), and fast response time. Its 47.8 V stand-off voltage allows normal CAN signal swing (±2.5 V differential) without conduction, while the 600 W surge rating handles ISO 11898-2 transient immunity requirements - making it a common choice for CAN FD nodes in automotive body control modules.
Does P6SMB56CAHM3_B/H require a heatsink for standard operation?
No, P6SMB56CAHM3_B/H does not require an external heatsink under normal operating conditions. Its 5.0 W steady-state power dissipation rating and 100 °C/W junction-to-ambient thermal resistance are sufficient when mounted on standard 0.2" × 0.2" copper pads per Vishay's recommended layout. Heatsinking is only necessary for sustained high-duty-cycle surge events beyond datasheet derating curves.
What does the "_B/H" suffix indicate in P6SMB56CAHM3_B/H?
The "_B/H" suffix in P6SMB56CAHM3_B/H denotes AEC-Q101 qualification level "B" (for P6SMB6.8CA to P6SMB220CA variants) and packaging in 7" diameter plastic tape and reel (H = 750 units per reel). The "HM3" portion confirms halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance - essential for automotive Tier 1 supply chain compliance.
How does P6SMB56CAHM3_B/H compare to unidirectional TVS diodes in circuit design?
P6SMB56CAHM3_B/H eliminates polarity dependency in layout, simplifying PCB routing for differential or AC-coupled signals. Unlike unidirectional TVS diodes (e.g., P6SMB56A), it protects both positive and negative transients without requiring series blocking diodes or dual-device configurations - reducing BOM count and board area while maintaining identical 600 W surge capability and 77.0 V clamping performance.
P6SMB56CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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/H FAQ
1.How can I place an order for P6SMB56CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CAHM3_B/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 P6SMB56CAHM3_B/H reliable?
The price and inventory of P6SMB56CAHM3_B/H 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/H is usually 5 days.
3.What payment methods are accepted for P6SMB56CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CAHM3_B/H?
P6SMB56CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CAHM3_B/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 P6SMB56CAHM3_B/H?
For technical support, including P6SMB56CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CAHM3_B/H requirements.
6.How does Aetrix verify that P6SMB56CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB56CAHM3_B/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 P6SMB56CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB56CAHM3_B/H?
All P6SMB56CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CAHM3_B/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 P6SMB56CAHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB56CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CAHM3_B/H Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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