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Vishay General Semiconductor - Diodes Division P6SMB39CAHE3_A/I
- Part No.:
- P6SMB39CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39CAHE3_A/I.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,134
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Product details
Overview
P6SMB39CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 39 V standoff voltage (VWM), 53.9 V clamping voltage at 11.1 A peak pulse current, and 600 W peak pulse power with a 10/1000 μs waveform. It protects sensitive ICs, MOSFETs, and sensor signal lines against inductive switching transients and lightning-induced surges in industrial and automotive electronics.
For engineers reviewing the P6SMB39CAHE3_A/I datasheet, P6SMB39CAHE3_A/I pinout, P6SMB39CAHE3_A/I application, or P6SMB39CAHE3_A/I equivalent, this AEC-Q101 qualified, RoHS-compliant bidirectional TVS offers verified clamping performance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability board-level ESD and surge protection design.
Technical Context
This device operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the SMB package supports automated placement and meets UL 94 V-0 flammability requirements.
Thermal performance is defined by RθJA = 100 °C/W and RθJL = 20 °C/W, with maximum junction temperature of +150 °C and operating range from –65 °C to +150 °C. It sustains repetitive 10/1000 μs pulses at 0.01% duty cycle and complies with JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33.3 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 37.1–41.0 V at 1 mA - Verified voltage range where device transitions into avalanche conduction; ensures predictable turn-on threshold. |
| VC (Clamping) | 53.9 V at IPPM = 11.1 A - Peak voltage seen by protected circuit during 10/1000 μs transient; directly limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability under standardized 10/1000 μs waveform; determines survivability against high-energy surges. |
| IPPM | 11.1 A - Maximum non-repetitive peak pulse current supported; sets minimum trace width and PCB layout requirements. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive and industrial environments. |
| Package | SMB (DO-214AA) - Low-profile surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with standard SMT reflow profiles and pick-and-place equipment. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; accepts surge current in either polarity during clamping event. |
| Cathode | Transient current entry (bidirectional) | Second terminal of symmetrical PN junction; completes low-impedance path to ground or rail during overvoltage condition. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional transient suppression | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns - e.g., RS-485, CAN, USB D+/D−. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces, with extended temperature cycling and humidity testing. |
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-line, 2 kV line-to-ground) when properly laid out on PCB. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in protected MOSFETs and microcontrollers. |
| MSL Level 1, 260 °C peak reflow | Eliminates need for dry-packaging or baking prior to assembly; compatible with standard lead-free reflow profiles. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across signal and ground, shunting transients before they reach ADC input or op-amp buffer. Use Value: Maintains signal integrity under 100 V/10 ms load dump events while surviving >1000 surge cycles per AEC-Q101 stress test. |
Use Scenario: Shielding digital input channels of programmable logic controllers from inductive kickback generated by solenoid valves and contactors. IC Role / Device Role / Timing Role: Fast-response voltage clamp installed at connector interface, limiting transient voltage to <54 V during 1 A–10 A switching events. Use Value: Prevents false triggering and latch-up in optocoupler input stages, extending mean time between failures in factory automation systems. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control |
Use Scenario: Safeguarding Ethernet PHY transceivers and PoE injectors against lightning-induced surges on RJ-45 ports in outdoor access points. IC Role / Device Role / Timing Role: Primary-level TVS mounted differential-mode across pairs, absorbing common-mode energy coupled via transformer parasitics. Use Value: Achieves IEC 61000-4-5 4 kV surge immunity without degrading 100BASE-TX signal integrity up to 100 MHz. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers connected to MCU-based motor drivers. IC Role / Device Role / Timing Role: Clamp placed across motor terminals or H-bridge supply rails to limit flyback voltage to safe levels for MOSFET gate oxides. Use Value: Reduces field failure rate of motor driver ICs by >90% in accelerated life testing under repeated 200 V/500 ns edge transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ39CA | Same VWM (33.3 V), identical SMB package, but lower PPPM = 600 W and higher VC = 60.0 V at same IPPM. | Larger clamping voltage margin may compromise protection of 3.3 V or 5 V logic; less suitable for tight-voltage-margin designs. | Select P6SMB39CAHE3_A/I when lower clamping voltage (53.9 V vs. 60.0 V) is required to protect 36 V-rated components. |
| SMCJ39CA | Same VWM and VBR, but larger SMC (DO-214AB) package, higher PPPM = 1500 W, and VC = 64.5 V at 23.3 A. | Requires larger PCB area and higher thermal mass; better for high-energy surges but over-specified for typical board-level protection. | Choose P6SMB39CAHE3_A/I for space-constrained layouts where 600 W suffices and footprint minimization is critical. |
Compared with SMBJ39CA and SMCJ39CA, P6SMB39CAHE3_A/I delivers tighter clamping (53.9 V), AEC-Q101 qualification, and optimized SMB footprint - making it the preferred choice for automotive-grade, high-density PCBs requiring precise voltage limiting without layout overhead.
Availability
P6SMB39CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor control requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB39CAHE3_A/I 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, TVS devices, and optoelectronics with emphasis on reliability, precision, and automotive-grade qualification.
The P6SMB Series was engineered specifically for robust, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What does the "CA" suffix indicate in P6SMB39CAHE3_A/I?
The "CA" suffix in P6SMB39CAHE3_A/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. This eliminates polarity concerns during PCB layout and enables use across AC-coupled or floating signal paths - unlike unidirectional variants (e.g., P6SMB39A) that require correct cathode orientation. The P6SMB39CAHE3_A/I functions identically in either direction, with matched VBR, VC, and IPPM ratings.
Is P6SMB39CAHE3_A/I suitable for automotive applications?
Yes, P6SMB39CAHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix and "_A/I" tape-and-reel packaging variant. It undergoes rigorous stress testing including temperature cycling, humidity bias, and mechanical shock per AEC-Q101 Rev D. The device is deployed in engine control units, body electronics, and ADAS sensor modules where sustained operation from –40 °C to +125 °C ambient and immunity to load dump transients are required. P6SMB39CAHE3_A/I meets these demands with its +150 °C TJ max and validated surge performance.
How does the clamping voltage of P6SMB39CAHE3_A/I compare to its breakdown voltage?
P6SMB39CAHE3_A/I has a breakdown voltage (VBR) range of 37.1–41.0 V at 1 mA and a maximum clamping voltage (VC) of 53.9 V at 11.1 A peak pulse current. This yields a clamping ratio of approximately 1.38, indicating tight voltage control during surge events. That ratio is critical for protecting 36 V-rated components - such as certain CAN transceivers or motor driver ICs - because it ensures the protected node never exceeds 53.9 V even under full-rated 600 W transient conditions. The low incremental surge resistance contributes directly to this favorable ratio.
What is the significance of the "HE3" and "_A/I" in P6SMB39CAHE3_A/I?
The "HE3" suffix in P6SMB39CAHE3_A/I indicates RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from commercial-grade "E3" variants. The "_A/I" denotes packaging: "A" specifies the 13-inch tape-and-reel format, and "I" identifies the reel quantity (3200 units per reel). This packaging aligns with high-volume SMT assembly requirements and supports traceability through Vishay's lot-code system. P6SMB39CAHE3_A/I is therefore optimized for automotive-tier-1 production, offering both reliability certification and logistics compatibility.
Can P6SMB39CAHE3_A/I be used in place of unidirectional TVS diodes?
No - P6SMB39CAHE3_A/I is strictly bidirectional and must not replace unidirectional TVS diodes (e.g., P6SMB39A) in circuits requiring polarity-specific clamping, such as DC power rail protection where only negative-going transients occur. While P6SMB39CAHE3_A/I offers symmetrical performance ideal for AC signals or floating buses, using it on a DC supply line introduces unnecessary leakage path symmetry and may degrade efficiency in low-power standby modes. Always match device polarity to circuit topology: select P6SMB39CAHE3_A/I only where bidirectional surge suppression is functionally required.
P6SMB39CAHE3_A/I 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/I FAQ
1.How can I place an order for P6SMB39CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39CAHE3_A/I 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/I reliable?
The price and inventory of P6SMB39CAHE3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for P6SMB39CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39CAHE3_A/I?
P6SMB39CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39CAHE3_A/I 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/I?
For technical support, including P6SMB39CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39CAHE3_A/I requirements.
6.How does Aetrix verify that P6SMB39CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB39CAHE3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of P6SMB39CAHE3_A/I?
All P6SMB39CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39CAHE3_A/I, 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/I part is unused and in its original packaging.
Return procedure for P6SMB39CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39CAHE3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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