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Vishay General Semiconductor - Diodes Division P6SMB36CAHE3/5B
- Part No.:
- P6SMB36CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB36CAHE3/5B.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,727
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Product details
Overview
P6SMB36CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 36 V standoff voltage (VWM), 49.9 V maximum clamping voltage at 12.0 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB36CAHE3/5B datasheet, P6SMB36CAHE3/5B pinout, P6SMB36CAHE3/5B application, or P6SMB36CAHE3/5B equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 30.8 V minimum breakdown voltage at 1 mA test current, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM).
The device delivers fast response time (<1.0 ns) and low incremental surge resistance, maintaining clamping integrity under repetitive 10/1000 μs transients at 0.01% duty cycle. Thermal resistance is rated at 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for protected circuitry. |
| VBR (Breakdown Voltage) | 34.2 V min / 37.8 V max at 1 mA - precise voltage threshold where avalanche conduction initiates reliably under transient stress. |
| VC (Clamping Voltage) | 49.9 V at 12.0 A IPPM - peak voltage seen by downstream components during worst-case 10/1000 μs surge; critical for IC survival. |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capacity for standardized lightning/surge immunity testing per IEC 61000-4-5. |
| ID (Reverse Leakage) | <1.0 μA at 30.8 V - negligible standby current that avoids loading sensitive analog or low-power circuits. |
| TJ max | 150 °C - maximum junction temperature enabling use in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress-test requirements including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional mode | No polarity marking required; terminals are functionally identical for transient suppression across AC or differential lines. |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional mode | Unmarked device - bidirectional operation eliminates need for orientation-dependent placement on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, RS-485 buses, and transformer-coupled interfaces without polarity constraints. |
| AEC-Q101 qualification | Validated reliability for automotive powertrain, body electronics, and ADAS modules requiring extended temperature and lifetime stability. |
| 600 W peak pulse power | Meets Level 4 IEC 61000-4-5 surge immunity (4 kV line-to-earth) with margin when mounted on 5 mm × 5 mm copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on protected ICs - e.g., keeps 3.3 V or 5 V logic inputs below destructive thresholds during transients. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; supports high-yield automated SMT manufacturing. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Communication Line |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential pair or supply rail to limit transient excursions to safe levels. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V transceivers while maintaining signal integrity during 10/1000 μs surges up to ±49.9 V. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs against ESD and cable discharge events on long data runs. IC Role / Device Role / Timing Role: Symmetrical transient suppressor connected between A/B lines and ground to absorb common-mode and differential-mode surges. Use Value: Ensures >15 kV contact ESD immunity per IEC 61000-4-2 and maintains data integrity without adding capacitance-induced timing skew. |
| Consumer Power Adapter Input Stage | Telecom DSL Line Interface |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters exposed to mains-borne surges and capacitor discharge transients. IC Role / Device Role / Timing Role: Bidirectional clamp across DC output rails to prevent overvoltage damage to downstream regulators and USB controllers. Use Value: Limits output overshoot to ≤49.9 V during 600 W surge events, protecting 5 V/12 V logic and enabling compliance with UL 62368-1. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers and receivers against lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Differential-mode TVS placed across tip/ring pair to shunt induced common-mode energy before it reaches PHY ICs. Use Value: Withstands repeated 10/1000 μs surges up to 4 kV while maintaining <0.5 pF junction capacitance to avoid signal attenuation above 1 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Same SMB package, 36 V VWM, but rated for 600 W with higher VC (51.0 V at 11.7 A); not AEC-Q101 qualified. | Lacks automotive qualification; suitable for commercial/industrial use only. | Select when AEC-Q101 is not required and slightly higher clamping voltage is acceptable. |
| 1.5SMC36CA | Higher-power 1500 W variant in larger SMC (DO-214AB) package; same 36 V VWM and bidirectional configuration. | Requires larger PCB footprint and different thermal management; better for high-energy surge zones. | Choose when system-level surge tests exceed 600 W or when board layout allows larger package. |
Compared with SMBJ36CA and 1.5SMC36CA, P6SMB36CAHE3/5B uniquely combines AEC-Q101 qualification, SMB footprint efficiency, and verified 600 W clamping performance - making it optimal for space-constrained automotive and industrial designs where qualification and reliability are mandatory.
Availability
P6SMB36CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom DSL line protection requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for P6SMB36CAHE3/5B 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, precision, and automotive-grade validation.
The P6SMB Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and communications systems where consistent clamping performance and AEC-Q101 compliance are essential.
FAQ
What is the clamping voltage of P6SMB36CAHE3/5B at its rated peak pulse current?
The P6SMB36CAHE3/5B has a maximum clamping voltage (VC) of 49.9 V at 12.0 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is P6SMB36CAHE3/5B suitable for automotive applications?
Yes, P6SMB36CAHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix and revision "B". It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD, making it appropriate for engine control units, body electronics, and ADAS sensor modules operating from −40 °C to +125 °C ambient.
How does the bidirectional design of P6SMB36CAHE3/5B affect PCB layout?
The bidirectional nature of P6SMB36CAHE3/5B eliminates polarity marking - no cathode band is present, and either terminal may connect to any node in the protected path. This simplifies layout for differential lines like RS-485 or CAN, removes orientation errors during automated placement, and enables symmetric placement across AC-coupled or floating signal pairs.
What is the thermal resistance of P6SMB36CAHE3/5B, and how does it impact power dissipation?
P6SMB36CAHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. When mounted on 5 mm × 5 mm copper pads, it sustains 5.0 W continuous power dissipation at TA = 50 °C - sufficient for low-duty-cycle surge absorption but requires thermal relief for sustained high-power operation.
Does P6SMB36CAHE3/5B meet RoHS and halogen-free requirements?
Yes, P6SMB36CAHE3/5B carries the "HE3" suffix indicating RoHS-compliant construction and AEC-Q101 qualification. It is not halogen-free - that designation applies only to "HM3" variants. Material compliance aligns with Vishay document 99912, and the device meets JESD201 Class 2 whisker resistance requirements.
P6SMB36CAHE3/5B 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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB36CAHE3/5B FAQ
1.How can I place an order for P6SMB36CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB36CAHE3/5B 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 P6SMB36CAHE3/5B reliable?
The price and inventory of P6SMB36CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB36CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB36CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB36CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB36CAHE3/5B?
P6SMB36CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB36CAHE3/5B 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 P6SMB36CAHE3/5B?
For technical support, including P6SMB36CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB36CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB36CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB36CAHE3/5B 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 P6SMB36CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB36CAHE3/5B?
All P6SMB36CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB36CAHE3/5B, 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 P6SMB36CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB36CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB36CAHE3/5B Tags
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