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Vishay General Semiconductor - Diodes Division P6SMB56CAHE3/5B
- Part No.:
- P6SMB56CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CAHE3/5B.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,526
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Product details
Overview
P6SMB56CAHE3/5B 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 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), and 77.0 V maximum clamping voltage (VC) at 7.8 A peak pulse current (IPPM), with 600 W peak pulse power rating under 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the P6SMB56CAHE3/5B datasheet, P6SMB56CAHE3/5B pinout, P6SMB56CAHE3/5B application, or P6SMB56CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) for board-level surge protection design.
Technical Context
The P6SMB56CAHE3/5B operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while meeting MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance.
It delivers 600 W peak pulse power handling (10/1000 µs waveform, 0.01% duty cycle) and exhibits fast response time (<1.0 ns), low incremental surge resistance, and excellent clamping ratio (VC/VBR ≈ 1.37). Junction temperature range spans –65 °C to +150 °C, supporting operation in harsh automotive and industrial environments.
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 avalanche conduction begins in both directions |
| Stand-off Voltage VWM | 47.8 V - maximum continuous reverse operating voltage before significant leakage or conduction occurs |
| Clamping Voltage VC | 77.0 V at 7.8 A IPPM - actual voltage seen by protected circuit during worst-case 600 W transient event |
| Peak Pulse Power PPPM | 600 W (10/1000 µs waveform) - determines surge energy absorption capacity without failure |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 0.205" × 0.220" footprint and matte tin-plated leads |
| AEC-Q101 Qualified | Yes (HE3 suffix) - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Junction Temperature Range | –65 °C to +150 °C - enables deployment in under-hood, motor control, and industrial power systems |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically regardless of orientation across the protected line.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve identical roles in bidirectional clamping; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 pulse 5a (load dump) in 12 V automotive systems |
| AEC-Q101 qualification (HE3) | Validated for automotive electronics including engine control units, body modules, and ADAS sensors |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio suppressors |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking, reducing manufacturing complexity and cost |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails in engine control units against load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamps positive and negative voltage spikes to safeguard LDOs, microcontrollers, and CAN transceivers. Use Value: Prevents latch-up or permanent damage during ISO 7637-2 compliant 100 V/100 ms load dump events. |
Use Scenario: Shielding analog output lines of pressure or temperature sensors in factory automation equipment. IC Role / Device Role / Timing Role: Fast-response TVS absorbs ESD and inductive switching noise coupled onto 4–20 mA or 0–10 V signal paths. Use Value: Maintains signal integrity and prevents false readings or ADC saturation during 8 kV contact ESD events. |
| Consumer Power Adapter Input Protection | Telecom DC Power Feeding Protection |
Use Scenario: Safeguarding primary-side input of wall adapters against AC line surges and lightning-induced transients. IC Role / Device Role / Timing Role: Stand-off voltage (47.8 V) blocks normal 24 VDC input while clamping >77 V surges to protect bridge rectifiers and controllers. Use Value: Eliminates need for additional MOVs or GDTs in compact designs, reducing BOM count and PCB area. |
Use Scenario: Protecting PoE-powered devices (e.g., IP cameras) from voltage reversals and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional clamping handles polarity-agnostic surges on 48 V DC feeding lines without requiring external diode steering. Use Value: Ensures uninterrupted operation during IEEE 802.3bt-compliant surge testing up to 10/1000 µs, 600 W. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA | Lower peak pulse power (400 W), same SMB package, VBR = 55.1–60.7 V, VC = 93.6 V at 4.3 A | Less robust for high-energy automotive load dump; suitable for lower-cost consumer-grade protection | Select when 400 W surge margin suffices and cost sensitivity outweighs AEC-Q101 requirement |
| SMCJ58CA | Higher power rating (1500 W), larger SMC (DO-214AB) package, VBR = 55.1–60.7 V, VC = 93.6 V at 16.0 A | Requires PCB layout change due to larger footprint; better for industrial 24/48 V systems with higher surge exposure | Choose when system-level surge immunity exceeds 600 W and board space allows SMC package |
Compared with SMAJ58CA and SMCJ58CA, the P6SMB56CAHE3/5B uniquely balances AEC-Q101 qualification, 600 W capability, and SMB footprint - making it optimal for space-constrained automotive modules where reliability and standardization are critical.
Availability
P6SMB56CAHE3/5B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeding circuits requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for P6SMB56CAHE3/5B 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 performance.
The P6SMB series was developed for high-reliability transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping behavior, AEC-Q101 compliance, and optimized thermal performance in compact SMB packages.
FAQ
What does the "CA" suffix indicate in P6SMB56CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration: the P6SMB56CAHE3/5B provides symmetrical transient voltage suppression in both polarities, eliminating the need for polarity-aware placement on PCBs. This differs from unidirectional variants (e.g., P6SMB56AHE3/5B) that require correct anode/cathode orientation and only clamp in one direction.
Is P6SMB56CAHE3/5B RoHS-compliant and halogen-free?
Yes, the P6SMB56CAHE3/5B is RoHS-compliant per EU Directive 2011/65/EU and meets Vishay's commercial-grade material requirements. However, it is not halogen-free - the HE3 suffix indicates AEC-Q101 qualification and RoHS compliance, but halogen-free status requires the HM3 suffix (e.g., P6SMB56CAHM3/5B).
What is the maximum clamping voltage of P6SMB56CAHE3/5B and how is it measured?
The maximum clamping voltage of the P6SMB56CAHE3/5B is 77.0 V, measured at 7.8 A peak pulse current (IPPM) using a 10/1000 µs double-exponential waveform. This value represents the highest voltage imposed on the protected circuit during a standardized surge event, confirming its ability to limit overvoltage stress within safe margins for 48 V-rated components.
Can P6SMB56CAHE3/5B replace P6SMB56AHE3/5B in a design?
No - the P6SMB56CAHE3/5B is bidirectional, while the P6SMB56AHE3/5B is unidirectional. Substituting them requires verifying circuit topology: unidirectional devices rely on DC bias and polarity; bidirectional devices assume symmetric voltage excursions. Replacing one with the other may result in improper clamping or failure to suppress transients in one polarity.
What is the thermal resistance of P6SMB56CAHE3/5B and how does it affect layout?
The P6SMB56CAHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperatures under repetitive surges, PCB layout must provide adequate copper area and avoid excessive trace length or isolation - especially critical in automotive applications where ambient temperatures exceed 85 °C.
P6SMB56CAHE3/5B 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB56CAHE3/5B FAQ
1.How can I place an order for P6SMB56CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CAHE3/5B 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 P6SMB56CAHE3/5B reliable?
The price and inventory of P6SMB56CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB56CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CAHE3/5B?
P6SMB56CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CAHE3/5B 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 P6SMB56CAHE3/5B?
For technical support, including P6SMB56CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB56CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB56CAHE3/5B 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 P6SMB56CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB56CAHE3/5B?
All P6SMB56CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CAHE3/5B, 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 P6SMB56CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB56CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CAHE3/5B Tags
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DESD3V3E1BL-7B
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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