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Vishay General Semiconductor - Diodes Division P6SMB36CA-E3/5B
- Part No.:
- P6SMB36CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB36CA-E3/5B.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:22,323
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Product details
Overview
P6SMB36CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 600 W peak pulse power (10/1000 μs), 36 V standoff voltage (VWM), and 49.9 V clamping voltage (VC) at 12.0 A peak pulse current. It protects signal lines and power rails in automotive sensor units, industrial I/O interfaces, and telecom front-end circuits against ESD and inductive switching transients.
For engineers reviewing the P6SMB36CA-E3/5B datasheet, P6SMB36CA-E3/5B pinout, P6SMB36CA-E3/5B application, or P6SMB36CA-E3/5B equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, RoHS-compliant commercial-grade qualification, and real-world design context for transient protection layout and reliability validation.
Technical Context
The P6SMB36CA-E3/5B operates as a symmetrical avalanche diode with identical forward and reverse breakdown characteristics due to its bidirectional construction. Its 36 V standoff voltage (VWM) ensures stable blocking below transient thresholds, while 49.9 V clamping voltage (VC) limits surge-induced overvoltage across protected ICs or MOSFET gates during 10/1000 μs transients.
It features glass-passivated junctions for robust surge handling, meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and exhibits low incremental surge resistance - enabling fast response (<1 ns) and minimal voltage overshoot during ESD events up to ±30 kV contact discharge per IEC 61000-4-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36 V - Maximum continuous reverse voltage before conduction begins; defines operating margin for protected circuitry. |
| VBR (Breakdown Voltage) | 34.2 V to 37.8 V at 1 mA - Measured voltage where device enters avalanche; ensures predictable turn-on threshold. |
| VC (Clamping Voltage) | 49.9 V at 12.0 A IPPM - Peak voltage seen by downstream components during 10/1000 μs surge; critical for IC survival. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability under standardized waveform; enables single-device protection for moderate surges. |
| ID (Reverse Leakage) | 1.0 μA max at 36 V - Negligible standby current; avoids loading of high-impedance signal paths or battery-powered nodes. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - Low-profile surface-mount outline compatible with automated placement; 0.220" × 0.130" footprint with 0.086" cathode band marking. |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, and polarity-indifferent bidirectional construction (no cathode band marking).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity distinction; either terminal serves as anode or cathode depending on transient polarity - simplifies PCB layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-diode protection for IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-ground) surges without external series impedance. |
| Low clamping ratio (VC/VWM = 1.39) | Minimizes overvoltage stress on protected 3.3 V or 5 V logic interfaces - critical for USB, CAN, RS-485, and sensor analog front-ends. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free assembly without pre-baking; eliminates moisture-related popcorning risk during manufacturing. |
| AEC-Q101 qualified option available (_B suffix) | Validated for automotive under-hood applications including engine control modules and ADAS sensor harnesses - though P6SMB36CA-E3/5B is commercial grade. |
| Glass passivated junction | Ensures stable avalanche characteristics over 1000+ surge events and extended lifetime in cyclic thermal environments. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and temperature/pressure sensor outputs in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching ASIC input pins. Use Value: Maintains signal integrity under 100 V/100 ms load dump events while adding <0.5 pF capacitance - no timing skew on 20 kbps LIN signals. |
Use Scenario: Safeguarding PLC analog input channels (4–20 mA, 0–10 V) against field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage limiter on signal path between terminal block and ADC front-end op-amp. Use Value: Limits fault voltage to ≤49.9 V during 1 kA surge, preventing op-amp saturation and preserving measurement accuracy across full scale. |
| Telecom Line Interface | Consumer USB Port Protection |
Use Scenario: Shielding Ethernet PHY magnetics and PoE injector circuits from lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Common-mode TVS across differential pairs (e.g., ETH_RX+, ETH_RX−) referenced to chassis ground. Use Value: Clamps common-mode transients to <50 V while maintaining >100 MHz bandwidth - no degradation of 100BASE-TX signal integrity. |
Use Scenario: ESD suppression on USB 2.0 D+/D− lines in portable audio devices subjected to ±8 kV contact discharge per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB connector to divert ESD current away from controller ESD diodes. Use Value: Adds only 35 pF typical junction capacitance - preserves eye diagram compliance and prevents signal rise-time degradation on 480 Mbps data streams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Same VWM (36 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W) | Lower surge handling margin; suitable only for light-duty consumer electronics, not industrial or automotive. | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 ±8 kV, not IEC 61000-4-5. |
| SMCJ36CA | Same VWM (36 V), higher PPPM (1500 W), larger SMC package (DO-214AB), higher VC (58.1 V) | Higher clamping voltage increases risk to 3.3 V logic; better suited for 12–24 V power rail protection than signal lines. | Choose for high-energy surges on DC power inputs where 58.1 V clamping is acceptable and PCB area allows SMC outline. |
Compared with SMAJ36CA and SMCJ36CA, the P6SMB36CA-E3/5B delivers optimal balance of surge robustness (600 W), compact SMB footprint, and low clamping voltage (49.9 V), making it the preferred choice for space-constrained signal-level protection in automotive and industrial edge nodes.
Availability
P6SMB36CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface designs requiring stable component supply, RoHS-compliant commercial-grade qualification, and consistent SMB packaging for automated assembly.
Supply support for P6SMB36CA-E3/5B 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, MOSFETs, and passive components with emphasis on reliability, power efficiency, and application-specific performance.
The P6SMB Series targets cost-sensitive yet robust transient protection needs in automotive, industrial, and telecom infrastructure - delivering standardized 600 W surge capability in compact SMB packages with validated AEC-Q101 variants.
FAQ
What is the clamping voltage of the P6SMB36CA-E3/5B at its rated peak pulse current?
The P6SMB36CA-E3/5B has a maximum clamping voltage (VC) of 49.9 V at 12.0 A peak pulse current (IPPM), measured under the standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB36CA-E3/5B maintains this clamping performance without derating up to +125 °C ambient.
Is the P6SMB36CA-E3/5B suitable for automotive applications?
The P6SMB36CA-E3/5B is a commercial-grade part with RoHS compliance and MSL Level 1 qualification, but it is not AEC-Q101 certified. For automotive use, Vishay offers the P6SMB36CAHE3_B variant (with _B suffix), which undergoes full AEC-Q101 stress testing. The P6SMB36CA-E3/5B may be used in non-safety-critical interior modules if customer qualification is performed, but the P6SMB36CA-E3/5B itself carries no automotive qualification.
How does the bidirectional configuration of the P6SMB36CA-E3/5B affect PCB layout?
The P6SMB36CA-E3/5B has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This allows unrestricted rotation on the PCB and simplifies pick-and-place programming. Layout requires symmetric 0.2" × 0.2" copper pads per terminal (per datasheet fig. 2), and no series impedance is needed - the P6SMB36CA-E3/5B connects directly across the protected node and ground or differential pair.
What is the junction capacitance of the P6SMB36CA-E3/5B, and how does it impact high-speed signals?
The P6SMB36CA-E3/5B exhibits a typical junction capacitance of 35 pF at zero bias, measured at 1 MHz. This value remains stable up to its 36 V standoff voltage and introduces negligible loading on low-frequency analog signals or sub-10 Mbps digital buses like CAN or RS-485. For USB 2.0 (480 Mbps), the P6SMB36CA-E3/5B's capacitance is acceptable when placed at the connector; however, for USB 3.0, a lower-capacitance TVS would be required - the P6SMB36CA-E3/5B is not recommended there.
Does the P6SMB36CA-E3/5B require a heatsink for continuous power dissipation?
No. The P6SMB36CA-E3/5B is rated for 5.0 W steady-state power dissipation only when mounted on an infinite heatsink at TA = 50 °C - a theoretical condition not achievable in practice. In normal operation, it handles only transient energy (600 W for <1 ms), not continuous power. Its RθJA of 100 °C/W means sustained DC power above ~0.5 W would exceed TJ max; the P6SMB36CA-E3/5B is strictly a transient suppressor, not a power-dissipating component.
P6SMB36CA-E3/5B 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
P6SMB36CA-E3/5B FAQ
1.How can I place an order for P6SMB36CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB36CA-E3/5B 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 P6SMB36CA-E3/5B reliable?
The price and inventory of P6SMB36CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB36CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB36CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB36CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB36CA-E3/5B?
P6SMB36CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB36CA-E3/5B 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 P6SMB36CA-E3/5B?
For technical support, including P6SMB36CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB36CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB36CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB36CA-E3/5B 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 P6SMB36CA-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB36CA-E3/5B?
All P6SMB36CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB36CA-E3/5B, 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 P6SMB36CA-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB36CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB36CA-E3/5B Tags
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