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Vishay General Semiconductor - Diodes Division P6SMB39CAHE3_A/H
- Part No.:
- P6SMB39CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39CAHE3_A/H.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,578
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Product details
Overview
P6SMB39CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features 39 V breakdown voltage (VBR min/max = 37.1–41.0 V at 1 mA), 33.3 V stand-off voltage (VWM), 53.9 V maximum clamping voltage (VC) at 11.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB39CAHE3_A/H datasheet, P6SMB39CAHE3_A/H pinout, P6SMB39CAHE3_A/H application, or P6SMB39CAHE3_A/H equivalent, this device serves as a RoHS-compliant, AEC-Q101-qualified bidirectional TVS for robust ESD and surge protection in space-constrained PCB layouts requiring low-profile SMT placement and repeatable clamping performance under repetitive transient stress.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior in forward and reverse directions. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the SMB package supports automated assembly and meets J-STD-020 MSL Level 1 with 260 °C reflow peak.
The device sustains 100 A non-repetitive forward surge current (IFSM) and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. Its temperature coefficient of VBR is +0.100 %/°C, enabling predictable voltage drift over -65 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at IT = 1 mA - defines reliable conduction onset under transient stress |
| VWM | 33.3 V - maximum continuous reverse voltage before significant leakage begins |
| VC @ IPPM | 53.9 V at 11.1 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 600 W - peak transient power handling capability under standardized waveform |
| IPPM | 11.1 A - maximum non-repetitive surge current the device safely clamps |
| TJ max | +150 °C - maximum junction temperature supporting operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - low-profile SMT outline with 0.220" × 0.130" footprint and matte tin-plated leads |
Pinout & Package
SMB (DO-214AA) package: surface-mount, bidirectional configuration with no polarity marking; terminals are symmetrical anode/cathode pair - no designated anode or cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal functions identically as input/output for transient clamping in either direction |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing symmetrical clamping path; no DC polarity dependency |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without derating on standard PCB pads |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics where reliability under thermal cycling and vibration is mandatory |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak without baking preconditioning |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving system immunity |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current across temperature and lifetime stress conditions |
Applications
| Automotive Sensor Signal Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤53.9 V during 100 V/50 ms load dump events, preventing latch-up or damage to 3.3 V/5 V signal chain components. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to 24 V DC field wiring surges and relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected TVS on each channel's input node, shunting energy before it reaches optocoupler or Schmitt trigger inputs. Use Value: Clamps 1 kV/42 Ω surge to <54 V within <1 ns, preserving signal integrity and enabling >100,000 surge cycles per channel. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Secondary-side transient suppression on Ethernet PHY power rails and data line terminations in PoE-powered switches and media converters. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp across isolated DC-DC output or MDI pairs to meet IEC 61000-4-2/4-5 compliance. Use Value: Maintains <1.0 µA leakage at 33.3 V, avoiding quiescent current impact on 3.3 V bias networks while clamping ±8 kV contact ESD. |
Use Scenario: Input-stage surge guard on 5 V/9 V USB-C PD adapter secondary outputs, protecting synchronous rectifier MOSFETs and feedback circuitry. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between output rail and GND, activated only during overvoltage fault conditions. Use Value: Withstands 600 W pulses without degradation, ensuring sustained protection across 50,000+ plug/unplug cycles in high-volume consumer applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39CA | Same VBR range (37.1–41.0 V), but lower PPPM = 400 W and higher VC = 60.0 V at 6.7 A | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump | Select P6SMB39CAHE3_A/H when 600 W clamping headroom and tighter VC are required for critical nodes. |
| 1.5SMC39CA | Higher PPPM = 1500 W, larger SMC package (DO-214AB), VC = 53.3 V at 28.3 A | Requires more PCB area; better suited for primary-side AC/DC input protection than signal-level use | Choose P6SMB39CAHE3_A/H for space-constrained SMT designs where SMB footprint and automated placement are essential. |
Compared with SMAJ39CA and 1.5SMC39CA, the P6SMB39CAHE3_A/H delivers optimal balance of 600 W surge capacity, 53.9 V clamping, and SMB footprint - making it preferred for signal-line protection in automotive and industrial modules where board area, AEC-Q101 qualification, and precise voltage limiting are jointly critical.
Availability
P6SMB39CAHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and telecom line interface protection requiring stable component supply, AEC-Q101 validation, and RoHS-compliant manufacturing traceability.
Supply support for P6SMB39CAHE3_A/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P6SMB Series targets high-reliability transient suppression in space-constrained applications - engineered for consistent clamping performance, low leakage, and compatibility with high-speed automated assembly in automotive, industrial, and communications systems.
FAQ
What does the "CA" suffix indicate in P6SMB39CAHE3_A/H?
The "CA" suffix in P6SMB39CAHE3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage clamping in both polarities - unlike unidirectional variants (e.g., P6SMB39A) that require correct cathode orientation. This makes P6SMB39CAHE3_A/H ideal for AC-coupled or differential signal lines where polarity reversal may occur during surge events.
Is P6SMB39CAHE3_A/H qualified for automotive applications?
Yes, P6SMB39CAHE3_A/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's P6SMB series datasheet (Doc. #88370, Rev. 09-Jan-2024). This qualification covers stress tests including temperature cycling, humidity bias, and mechanical shock - validating its suitability for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage of P6SMB39CAHE3_A/H and at what current is it specified?
The maximum clamping voltage (VC) of P6SMB39CAHE3_A/H is 53.9 V, measured at the peak pulse current (IPPM) of 11.1 A under a 10/1000 µs waveform. This value is guaranteed per the manufacturer's electrical characteristics table and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Does P6SMB39CAHE3_A/H require polarity-aware PCB layout?
No, P6SMB39CAHE3_A/H does not require polarity-aware layout because it is a bidirectional TVS diode - both terminals are functionally identical, and no cathode band or marking is present on the SMB package. This simplifies routing and eliminates orientation errors during automated placement, unlike unidirectional variants such as P6SMB39A.
What is the thermal resistance of P6SMB39CAHE3_A/H and how does it affect PCB design?
P6SMB39CAHE3_A/H 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 guides thermal pad sizing: reducing pad area increases RθJA, risking junction overheating during repetitive surges; maintaining or expanding copper improves heat dissipation and supports higher duty-cycle operation.
P6SMB39CAHE3_A/H 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- 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)
P6SMB39CAHE3_A/H FAQ
1.How can I place an order for P6SMB39CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39CAHE3_A/H 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 P6SMB39CAHE3_A/H reliable?
The price and inventory of P6SMB39CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB39CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB39CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39CAHE3_A/H?
P6SMB39CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39CAHE3_A/H 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 P6SMB39CAHE3_A/H?
For technical support, including P6SMB39CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39CAHE3_A/H requirements.
6.How does Aetrix verify that P6SMB39CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB39CAHE3_A/H 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 P6SMB39CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB39CAHE3_A/H?
All P6SMB39CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39CAHE3_A/H, 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 P6SMB39CAHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB39CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39CAHE3_A/H Tags
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