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Vishay General Semiconductor - Diodes Division P6SMB36CAHE3/52
- Part No.:
- P6SMB36CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB36CAHE3/52.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB36CAHE3/52 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 36 V standoff voltage (VWM), 49.9 V clamping voltage (VC) at 12.0 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P6SMB36CAHE3/52 datasheet, P6SMB36CAHE3/52 pinout, P6SMB36CAHE3/52 application, or P6SMB36CAHE3/52 equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) under PCB pad-limited conduction.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: during transients exceeding its breakdown threshold (VBR min = 34.2 V, max = 37.8 V at 1 mA), it rapidly switches to low-impedance conduction, diverting surge current away from downstream ICs. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns).
Designed for repetitive surge events at 0.01% duty cycle, the device sustains 600 W peak pulse power only when mounted on 0.2" × 0.2" copper pads per terminal. Its bidirectional structure eliminates polarity concerns in AC-coupled or differential lines, and its MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30.8 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping onset. |
| VBR (Breakdown) | 34.2–37.8 V at 1 mA - Voltage range where device transitions from high- to low-impedance; ensures predictable turn-on across temperature and unit variation. |
| VC (Clamping) | 49.9 V at IPPM = 12.0 A - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; directly limits stress on downstream MOSFETs or ICs. |
| PPPM | 600 W - Peak transient energy absorption capacity with standardized 10/1000 μs waveform; validates suitability for IEC 61000-4-5 Level 3/4 surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on minimal pad layout; dictates maximum allowable average power dissipation in non-heatsinked designs. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias HAST, and mechanical shock; required for under-hood and ADAS sensor protection. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability and JESD 22-B102 whisker testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One of two symmetrical terminals; conducts surge current toward cathode during positive transients and vice versa - no fixed polarity. |
| Cathode | Transient current exit (bidirectional) | Second symmetrical terminal; completes low-impedance path during either polarity surge - identical electrical behavior to anode in CA devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC, differential, or floating signal lines without polarity constraints - reduces BOM count vs. dual unidirectional setup. |
| 600 W peak pulse power | Supports IEC 61000-4-5 combination wave (10/700 μs) and lightning surge immunity up to 4 kV (line-earth) in properly laid out PCBs. |
| AEC-Q101 qualification (HE3 suffix) | Confirms long-term reliability in automotive environments: -40 °C to +125 °C operation, 1000-cycle temperature cycling, and 96-hour HAST. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during fast transients - critical for protecting 3.3 V or 5 V logic interfaces adjacent to protected lines. |
| MSL Level 1, 260 °C peak reflow | Permits standard lead-free SMT assembly without moisture sensitivity handling - eliminates bake requirements and streamlines manufacturing. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD in engine control units. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed at connector entry point, clamping induced spikes before they reach signal conditioning amplifiers or microcontroller ADC inputs. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-2 ±8 kV contact discharge - prevents latch-up or permanent damage to 5 V tolerant interface ICs. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring surges and ground bounce. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on differential input pairs, absorbing common-mode transients while preserving DC accuracy and bandwidth. Use Value: Enables >1500 V common-mode surge immunity (IEC 61000-4-5) without degrading 16-bit ADC resolution - avoids need for isolated signal conditioners in cost-sensitive designs. |
| Telecom Line Card Protection | Consumer USB Port ESD Guard |
Use Scenario: Front-end surge suppression on Ethernet PHY magnetics, DSL line drivers, or PoE-powered equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary shunt protector on transformer-coupled data lines, coordinated with secondary GDT or polymer PTC for multi-stage protection. Use Value: Limits induced voltage to <50 V during 10/1000 μs surges up to 100 A - keeps PHY ICs within absolute maximum ratings and avoids link dropouts. |
Use Scenario: ESD and cable discharge event (CDE) protection on USB 2.0 data lines (D+/D−) and VBUS in smart home hubs and portable accessories. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) bidirectional clamp placed immediately after connector, before USB transceiver ESD diodes. Use Value: Passes IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) without signal distortion - preserves 480 Mbps data integrity and prevents false disconnects. |
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 (30.8 V) and VC (49.9 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select when board space is constrained and surge threat level is ≤2 kV; verify thermal derating at elevated ambient temperatures. |
| 1.5SMC36CA | Higher PPPM (1500 W), same VWM/VC, but larger SMC (DO-214AB) package; RθJA = 60 °C/W. | Overqualified for most PCB-level protection; requires larger pad area and may not fit dense layouts. | Choose only when legacy designs mandate SMC footprint or when system-level surge testing exceeds 600 W requirements. |
Compared with SMAJ36CA and 1.5SMC36CA, P6SMB36CAHE3/52 delivers optimal balance of 600 W surge capacity, AEC-Q101 compliance, and SMB footprint - making it the preferred choice for new automotive and industrial designs requiring validated reliability without over-engineering.
Availability
P6SMB36CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line card protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for P6SMB36CAHE3/52 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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for rapid response, repeatable clamping, and robustness under harsh environmental stress.
FAQ
What is the clamping voltage of P6SMB36CAHE3/52 and how does it protect downstream circuits?
The P6SMB36CAHE3/52 has a maximum clamping voltage (VC) of 49.9 V at 12.0 A peak pulse current. This means that during a transient event, the device limits the voltage seen by protected components to ≤49.9 V - well below the breakdown thresholds of most 3.3 V, 5 V, or 12 V ICs. Its low incremental surge resistance ensures minimal voltage overshoot, preserving signal integrity and preventing latch-up or gate oxide damage in MOSFETs and microcontrollers.
Is P6SMB36CAHE3/52 suitable for automotive applications?
Yes, P6SMB36CAHE3/52 is AEC-Q101 qualified (indicated by the HE3 suffix), meaning it has passed rigorous automotive reliability tests including temperature cycling, humidity bias HAST, and mechanical shock. It operates from −65 °C to +150 °C junction temperature and is rated for use in engine control units, ADAS sensors, and infotainment interfaces where sustained reliability under thermal and vibration stress is mandatory.
How does the bidirectional design of P6SMB36CAHE3/52 differ from unidirectional TVS diodes?
Unlike unidirectional TVS diodes that conduct only in reverse bias (cathode-to-anode), P6SMB36CAHE3/52 conducts symmetrically in both directions - behaving identically for positive and negative transients. This eliminates polarity marking and simplifies layout on AC-coupled lines, differential buses (e.g., RS-485, CAN), or floating sensor outputs, reducing risk of incorrect placement and enabling single-device protection where polarity is undefined.
What is the thermal resistance of P6SMB36CAHE3/52 and how does it affect power handling?
P6SMB36CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value determines how much average power can be safely dissipated without exceeding the 150 °C maximum junction temperature. For example, at 50 °C ambient, only ~0.5 W of continuous power is permissible - confirming its role as a transient (not steady-state) protector, with energy handled in short pulses rather than DC loading.
Does P6SMB36CAHE3/52 meet lead-free assembly requirements?
Yes, P6SMB36CAHE3/52 carries the HE3 suffix, indicating RoHS-compliant construction and qualification for lead-free reflow soldering with a maximum peak temperature of 260 °C (MSL Level 1 per J-STD-020). Its matte tin-plated leads meet J-STD-002 solderability standards and JESD 22-B102 whisker resistance Class 2 - ensuring reliable interconnects in modern SMT lines without post-assembly cleaning or special process controls.
P6SMB36CAHE3/52 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:
- 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)
P6SMB36CAHE3/52 FAQ
1.How can I place an order for P6SMB36CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB36CAHE3/52 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 P6SMB36CAHE3/52 reliable?
The price and inventory of P6SMB36CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB36CAHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB36CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB36CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB36CAHE3/52?
P6SMB36CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB36CAHE3/52 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 P6SMB36CAHE3/52?
For technical support, including P6SMB36CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB36CAHE3/52 requirements.
6.How does Aetrix verify that P6SMB36CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB36CAHE3/52 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 P6SMB36CAHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB36CAHE3/52?
All P6SMB36CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB36CAHE3/52, 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 P6SMB36CAHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB36CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB36CAHE3/52 Tags
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