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Vishay General Semiconductor - Diodes Division P6SMB51CA-E3/52
- Part No.:
- P6SMB51CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB51CA-E3/52.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,791
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Product details
Overview
P6SMB51CA-E3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection on signal and power lines. It features a 51 V breakdown voltage (VBR = 48.5–53.6 V at IT = 1.0 mA), 70.1 V maximum clamping voltage (VC) at 8.6 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 P6SMB51CA-E3/52 datasheet, P6SMB51CA-E3/52 pinout, P6SMB51CA-E3/52 application, or P6SMB51CA-E3/52 equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification eligibility via HE3/HM3 variants - critical for automotive-grade transient immunity design.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding its standoff voltage (VWM = 43.6 V), it avalanches symmetrically in both directions to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns).
Thermal performance is defined by RθJA = 100 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) and TJ(max) = 150 °C, enabling reliable operation under repetitive 0.01% duty-cycle surges. The SMB (DO-214AA) package supports automated placement and meets UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V at 1.0 mA test current - defines precise avalanche initiation threshold in both directions |
| VWM | 43.6 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 70.1 V at 8.6 A - clamping voltage limiting downstream voltage stress during 10/1000 µs surge |
| PPPM | 600 W - peak pulse power handling capability per single 10/1000 µs transient event |
| IPPM | 8.6 A - maximum non-repetitive peak pulse current the device safely clamps |
| TJ(max) | 150 °C - maximum junction temperature enabling use in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 0.220" × 0.130" footprint and matte tin-plated leads |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function as interchangeable anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as current entry point during positive or negative transients - no fixed polarity |
| Terminal 2 | Anode/Cathode (bidirectional) | Complementary terminal completing symmetrical clamping path - identical electrical role to Terminal 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in automotive load-dump and industrial switching noise |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture-related popcorning risk |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage drift across temperature and lifetime |
| AEC-Q101 qualification option | HE3/HM3 suffix variants available for automotive applications requiring validated reliability |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ISO 7637-2 pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Shunt TVS element placed directly at connector interface to clamp induced surges before reaching protected IC. Use Value: Maintains signal integrity by limiting transient voltage to ≤70.1 V while surviving 600 W pulses - meeting OEM EMC robustness requirements. |
Use Scenario: Safeguarding PLC digital input channels exposed to inductive kickback from solenoids and relay coils. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across input terminals to absorb reverse EMF and ESD events. Use Value: Eliminates need for separate unidirectional devices per polarity; reduces BOM count and PCB area in space-constrained DIN-rail modules. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
|
Use Scenario: Shielding Ethernet PHY front-end and PoE detection circuitry from lightning-induced surges on RJ45 ports. IC Role / Device Role / Timing Role: Primary-level surge suppressor mounted at board edge before isolation transformer or choke. Use Value: Clamps common-mode transients to <70.1 V within nanoseconds - preserving PHY IC reliability without adding propagation delay. |
Use Scenario: Adding secondary-side transient protection on 5 V/12 V DC outputs of wall adapters against user-handling ESD and cable coupling. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp across output rails to suppress ±8 kV contact ESD per IEC 61000-4-2. Use Value: Achieves <1 µA leakage at 43.6 V - avoids quiescent current penalty while delivering certified ESD immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51CA | Same 51 V VBR range but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; unsuitable for automotive load-dump where 600 W is required | Select when board space is constrained and surge energy remains ≤400 W |
| SMCJ51CA | Higher PPPM = 1500 W; larger SMC package (DO-214AB); same VBR/VC specs | Overqualified for cost-sensitive consumer designs; requires larger pad layout and higher assembly cost | Choose for industrial motor drives or railway systems demanding >1 kW surge margin |
Compared with SMAJ51CA and SMCJ51CA, the P6SMB51CA-E3/52 delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, and AEC-Q101 upgrade path - making it the preferred choice for mid-tier automotive and industrial control applications where thermal derating and PCB real estate are jointly constrained.
Availability
P6SMB51CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O modules, and telecom line protection requiring stable component supply, RoHS-compliant manufacturing, and traceable lot-level documentation.
Supply support for P6SMB51CA-E3/52 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, precision, and automotive-grade qualification.
The P6SMB Series targets high-reliability transient suppression in space- and cost-constrained applications, combining industry-standard SMB packaging with 600 W surge capability and AEC-Q101-ready variants for automotive electronics.
FAQ
What is the standoff voltage (VWM) of the P6SMB51CA-E3/52?
The P6SMB51CA-E3/52 has a maximum reverse standoff voltage (VWM) of 43.6 V - the highest DC or continuous AC voltage that can be applied without exceeding 1.0 µA leakage current. This value ensures compatibility with 36 V nominal automotive and 48 V industrial power rails while maintaining low standby loss. The P6SMB51CA-E3/52 maintains this specification across its full operating temperature range of –65 °C to +150 °C.
Is the P6SMB51CA-E3/52 suitable for automotive applications?
Yes - the P6SMB51CA-E3/52 is RoHS-compliant and compatible with AEC-Q101 qualification when ordered with HE3 or HM3 suffixes (e.g., P6SMB51CAHE3_B). While the base P6SMB51CA-E3/52 itself is commercial-grade, its construction - including glass-passivated junction, MSL Level 1 rating, and 150 °C TJ(max) - meets foundational requirements for under-hood and chassis-mounted automotive modules. The P6SMB51CA-E3/52 serves as the foundation for qualified variants used in ADAS sensors and body control units.
How does the bidirectional configuration of the P6SMB51CA-E3/52 affect circuit layout?
The P6SMB51CA-E3/52 has no polarity marking and functions identically in both directions - simplifying PCB layout by eliminating orientation checks during placement and enabling use on AC-coupled or differential lines (e.g., RS-485, CAN, USB D+/D−) without external diode pairing. Its symmetrical terminals allow direct placement across any two nodes needing mutual transient suppression. The P6SMB51CA-E3/52 requires only standard SMB footprint pads (0.220" × 0.130") with 0.2" × 0.2" copper areas per terminal for rated power dissipation.
What is the clamping voltage (VC) of the P6SMB51CA-E3/52 at its rated peak pulse current?
The P6SMB51CA-E3/52 clamps to a maximum of 70.1 V when subjected to its rated 8.6 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This VC value is measured after full avalanche stabilization and represents the upper voltage limit imposed on protected circuitry during surge events. The P6SMB51CA-E3/52 achieves this with low incremental surge resistance, ensuring minimal voltage overshoot beyond 70.1 V even under fast-rising transients.
Does the P6SMB51CA-E3/52 require a heatsink for standard operation?
No - the P6SMB51CA-E3/52 is designed for surface-mount operation without external heatsinking. Its thermal performance relies on PCB copper pad area: mounting on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal yields RθJA = 100 °C/W, sufficient for pulsed operation at ambient temperatures up to +85 °C. Continuous power dissipation is limited to 5.0 W (PD), but typical TVS use involves short-duration surges, not steady-state loading. The P6SMB51CA-E3/52's SMB package integrates thermal path optimization into its standard layout recommendations.
P6SMB51CA-E3/52 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):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB51CA-E3/52 FAQ
1.How can I place an order for P6SMB51CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB51CA-E3/52 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 P6SMB51CA-E3/52 reliable?
The price and inventory of P6SMB51CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB51CA-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB51CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB51CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB51CA-E3/52?
P6SMB51CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB51CA-E3/52 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 P6SMB51CA-E3/52?
For technical support, including P6SMB51CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB51CA-E3/52 requirements.
6.How does Aetrix verify that P6SMB51CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB51CA-E3/52 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 P6SMB51CA-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB51CA-E3/52?
All P6SMB51CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB51CA-E3/52, 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 P6SMB51CA-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB51CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB51CA-E3/52 Tags
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