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Vishay General Semiconductor - Diodes Division P6SMB56CAHE3_B/H
- Part No.:
- P6SMB56CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CAHE3_B/H.pdf
- Description:
- 600W,56V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,670
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Product details
Overview
P6SMB56CAHE3_B/H 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 at 7.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P6SMB56CAHE3_B/H datasheet, P6SMB56CAHE3_B/H pinout, P6SMB56CAHE3_B/H application, or P6SMB56CAHE3_B/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) for board-level surge resilience without heatsinking.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding its reverse standoff voltage (VWM = 47.8 V), it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at VWM).
Designed for repetitive surge handling (0.01% duty cycle), it sustains 600 W pulses per 10/1000 μs standard waveform and derates linearly above 25 °C ambient, with max junction temperature of 150 °C and thermal resistance of 20 °C/W junction-to-lead - enabling direct PCB pad thermal coupling without auxiliary heatsinks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V - precise bidirectional avalanche threshold ensuring consistent clamping onset across polarity |
| VWM | 47.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 77.0 V at 7.8 A - clamped voltage under full 600 W transient, defining worst-case stress on downstream ICs |
| PPPM | 600 W - peak pulse power handling capability with 10/1000 μs waveform, validated per REA standard |
| IPPM | 7.8 A - peak pulse current corresponding to 600 W clamping, used for PCB trace sizing and fuse coordination |
| TJ max | 150 °C - maximum junction temperature enabling operation in under-hood automotive or high-ambient industrial environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient air on standard 0.2" × 0.2" copper pads, guiding layout thermal design |
Pinout & Package
Package: SMB (DO-214AA) - surface-mount, low-profile plastic case with matte tin-plated leads, UL 94 V-0 rated molding compound, MSL Level 1 (260 °C reflow peak), and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common reference node in bidirectional configuration | No polarity marking on device body; terminals are functionally symmetric for AC transients |
| Cathode | Current exit terminal in forward bias; common reference node in bidirectional configuration | Identical electrical role to Anode in bidirectional operation - no cathode band marking present |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD - suitable for engine control, ADAS sensors, and infotainment power rails |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave surges without degradation when properly mounted |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage margin between clamping and protected IC's absolute maximum rating - critical for 3.3 V/5 V logic interfaces |
| Bi-directional symmetry | Identical VBR, VC, and leakage in both polarities - essential for AC-coupled lines, RS-485, CAN FD, and Ethernet PHY protection |
| MSL Level 1 | Compatible with standard SMT reflow profiles up to 260 °C peak - eliminates moisture sensitivity handling requirements in production |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting 12 V supply and signal lines of wheel speed, pressure, or temperature sensors exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional shunt clamp absorbing transients up to ±100 V while maintaining <1 μA leakage at nominal 12 V rail. Use Value: Prevents sensor IC latch-up or damage during ISO 16750-2 load dump events, preserving functional safety integrity without adding series impedance. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers against field wiring faults and lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) voltage limiter placed across input terminals to clamp common-mode transients before they reach precision op-amps or ADC front-ends. Use Value: Maintains analog measurement accuracy by limiting input voltage excursion to ≤77 V, avoiding saturation or destruction of instrumentation amplifiers. |
| Telecom Line Card Protection | Consumer USB Power Delivery |
|
Use Scenario: Shielding Ethernet PHYs and PoE injectors from induced surges on twisted-pair cabling in enterprise switch line cards. IC Role / Device Role / Timing Role: Bidirectional TVS placed differential-mode across pairs and common-mode to chassis ground to suppress ESD and fast transients per IEC 61000-4-2/4-5. Use Value: Enables compliance with GR-1089-CORE telecom immunity requirements while adding <0.5 pF parasitic capacitance - no signal integrity impact at 100 MHz. |
Use Scenario: Overvoltage safeguard on VBUS lines of USB-C ports handling up to 20 V PD negotiation, especially in portable docking stations. IC Role / Device Role / Timing Role: Secondary clamping device downstream of primary protection, triggered only during abnormal overvoltage events beyond 5–20 V operating range. Use Value: Limits VBUS to ≤77 V during adapter fault conditions, preventing catastrophic failure of USB PD controller and connected devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | Same SMB package, 58 V VBR (55.1–60.9 V), 83.0 V VC @ 7.2 A, non-AEC-Q101 commercial grade | Lacks automotive qualification; higher clamping voltage increases risk to 3.3 V logic in compact layouts | Select when AEC-Q101 is not required and board space allows slightly higher VC margin |
| 1.5SMC58CA | Higher-power 1500 W variant in larger SMC (DO-214AB) package, same 58 V VBR, 93.6 V VC @ 16.0 A | Requires larger PCB footprint and different thermal pad layout; suited for primary-level surge suppression | Choose for front-end AC/DC input protection where 600 W is insufficient and layout permits SMC size |
Compared with SMBJ58CA and 1.5SMC58CA, P6SMB56CAHE3_B/H delivers tighter VBR tolerance (±5%), lower clamping voltage (77.0 V vs. ≥83.0 V), and guaranteed AEC-Q101 qualification - making it optimal for space-constrained, automotive-grade secondary protection where precise voltage limiting is critical.
Availability
P6SMB56CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLC analog inputs, telecom line cards, and USB-C power delivery designs requiring stable component supply with AEC-Q101 assurance and SMB footprint compatibility.
Supply support for P6SMB56CAHE3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series targets cost-sensitive, high-volume surge protection needs in automotive, industrial, and communications equipment - delivering standardized 600 W TVS performance in compact SMB packages with AEC-Q101 variants for mission-critical applications.
FAQ
What does the "CA" suffix indicate in P6SMB56CAHE3_B/H?
The "CA" suffix in P6SMB56CAHE3_B/H denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities, with identical breakdown and clamping characteristics for positive and negative transients. This is essential for protecting AC-coupled signals, differential buses like RS-485 or CAN, and ungrounded power rails where polarity reversal may occur. The P6SMB56CAHE3_B/H has no polarity marking on its body, confirming its bidirectional nature.
Is P6SMB56CAHE3_B/H suitable for automotive applications?
Yes, P6SMB56CAHE3_B/H is AEC-Q101 qualified, as confirmed by its "HE3" and "_B" suffixes - indicating RoHS-compliant construction and automotive-grade reliability testing including temperature cycling, highly accelerated life testing (HALT), and ESD robustness. It is explicitly rated for under-hood and cabin applications such as engine control units, ADAS camera modules, and body control modules where sustained operation up to 150 °C junction temperature and immunity to load dump transients are required.
How does the clamping voltage of P6SMB56CAHE3_B/H compare to its breakdown voltage?
The P6SMB56CAHE3_B/H has a minimum breakdown voltage (VBR) of 53.2 V and a maximum clamping voltage (VC) of 77.0 V at 7.8 A peak pulse current - yielding a clamping ratio of approximately 1.37. This tight ratio ensures minimal overvoltage overshoot during surge events, which is critical for protecting modern low-voltage ICs (e.g., 3.3 V or 5 V microcontrollers) without requiring excessive voltage margin in system design.
What is the thermal performance of P6SMB56CAHE3_B/H on a standard PCB layout?
When mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, P6SMB56CAHE3_B/H exhibits a junction-to-ambient thermal resistance (RθJA) of 100 °C/W and a junction-to-lead value (RθJL) of 20 °C/W. This enables reliable operation at full 600 W pulse power without external heatsinking, provided ambient temperature remains ≤70 °C and board copper area is maintained per Vishay's layout guidelines in document 88370.
Can P6SMB56CAHE3_B/H replace unidirectional TVS diodes in existing designs?
No - P6SMB56CAHE3_B/H is strictly bidirectional and lacks a cathode band marking, so it cannot substitute for unidirectional TVS diodes (e.g., P6SMB56A) in DC-biased circuits where forward conduction must be blocked in one direction. Attempting replacement may cause unintended conduction or failed clamping. Use only in applications requiring symmetrical protection, such as AC lines, differential data buses, or floating power domains where polarity is undefined or reversible.
P6SMB56CAHE3_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)
P6SMB56CAHE3_B/H FAQ
1.How can I place an order for P6SMB56CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CAHE3_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 P6SMB56CAHE3_B/H reliable?
The price and inventory of P6SMB56CAHE3_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 P6SMB56CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB56CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CAHE3_B/H?
P6SMB56CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CAHE3_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 P6SMB56CAHE3_B/H?
For technical support, including P6SMB56CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CAHE3_B/H requirements.
6.How does Aetrix verify that P6SMB56CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB56CAHE3_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 P6SMB56CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB56CAHE3_B/H?
All P6SMB56CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CAHE3_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 P6SMB56CAHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB56CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CAHE3_B/H Tags
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