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Vishay General Semiconductor - Diodes Division P6SMB39CAHE3_B/I
- Part No.:
- P6SMB39CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39CAHE3_B/I.pdf
- Description:
- 600W,39V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,481
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Product details
Overview
P6SMB39CAHE3_B/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 33.3 V stand-off voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA test current, and clamps up to 53.9 V at 11.1 A peak pulse current under 10/1000 μs waveform - ideal for protecting automotive-grade sensor interfaces and industrial I/O circuits.
For engineers reviewing the P6SMB39CAHE3_B/I datasheet, P6SMB39CAHE3_B/I pinout, P6SMB39CAHE3_B/I application, or P6SMB39CAHE3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and 600 W peak pulse power rating with low incremental surge resistance.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal lines without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the low thermal resistance (RθJL = 20 °C/W) supports reliable energy dissipation during repetitive transients.
The device is rated for 150 °C maximum junction temperature and meets J-STD-020 MSL Level 1 (260 °C peak reflow), making it suitable for high-reliability automated SMT assembly. Its 0.01% duty cycle rating for 600 W pulses reflects optimized surge handling for infrequent but high-energy events like ESD or inductive switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33.3 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown) | 37.1–41.0 V at 1 mA - Confirmed voltage range where device transitions to avalanche conduction; tight tolerance enables predictable clamping onset |
| VC (Clamping) | 53.9 V at 11.1 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case transient; determines downstream component voltage stress |
| PPPM | 600 W - Peak pulse power handling capacity; supports robust protection against lightning-induced surges and load dump events |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with IPC-7351B land patterns |
| AEC-Q101 Qualified | Yes - Validated for automotive applications per stress test requirements including HTGB, HTRB, and TCT; suffix HE3_B/I denotes qualification |
| Thermal Resistance | RθJL = 20 °C/W - Low junction-to-lead resistance enables efficient heat transfer to PCB copper pads during pulse events |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically regardless of orientation across the protected line.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no DC polarity dependency in bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without external polarity management |
| 600 W peak pulse power | Handles high-energy transients such as ISO 7637-2 Pulse 1/2a/5a in automotive environments without degradation over rated lifetime |
| AEC-Q101 qualification | Validates reliability for under-hood and ADAS sensor modules where extended temperature cycling and long-term stability are mandatory |
| Glass passivated junction | Provides consistent VBR tolerance and low leakage (<1 μA at VWM) across temperature and life, critical for low-power sensor front-ends |
| MSL Level 1 rating | Supports standard lead-free reflow profiles (peak 260 °C) without preconditioning, simplifying manufacturing for high-volume automotive ECUs |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector or IC input pins to limit transient voltage before reaching sensitive analog front-end or transceiver. Use Value: Maintains signal integrity during 12 V/24 V system transients while meeting ISO 16750-2 and ISO 10605 compliance thresholds. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLCs exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Line-side transient suppressor between bus termination and transceiver I/O, absorbing common-mode surges induced by nearby inductive loads. Use Value: Prevents latch-up or permanent damage to MAX1487/SP3485-level devices during 4 kV EFT bursts per IEC 61000-4-4. |
| Consumer USB Port Protection | Telecom DSL Line Interface |
|
Use Scenario: Clamping electrostatic discharge on USB 2.0 D+/D− lines in set-top boxes and smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to shunt ESD current before reaching USB PHY. Use Value: Achieves >15 kV air-gap and >8 kV contact ESD immunity (IEC 61000-4-2) without distorting 480 Mbps data eye. |
Use Scenario: Protecting ADSL/VDSL line drivers and receivers from lightning-induced surges on outdoor telecom drops. IC Role / Device Role / Timing Role: Primary surge suppression stage before transformer coupling and line driver ICs in DSLAM or CPE equipment. Use Value: Withstands 10/700 μs telecom surges up to 1 kV (IEC 61000-4-5) while maintaining <1 pF junction capacitance at zero bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33CA | Lower PPPM (400 W), same SMB package, VWM = 33 V, VC = 53.3 V at 7.5 A | Less robust for high-energy automotive load dump; suitable for cost-sensitive consumer designs | Select when 400 W pulse rating suffices and AEC-Q101 is not required |
| SMCJ33CA | Higher PPPM (1500 W), larger SMC (DO-214AB) package, VWM = 33 V, VC = 53.3 V at 28.3 A | Requires PCB area increase (~2.5× footprint); better for industrial power rail protection | Choose for higher surge immunity where board space allows and SMC mounting is acceptable |
Compared with SMAJ33CA and SMCJ33CA, P6SMB39CAHE3_B/I delivers balanced performance: AEC-Q101 qualification and 600 W rating in the compact SMB footprint - making it optimal for space-constrained automotive and industrial modules requiring certified reliability without layout redesign.
Availability
P6SMB39CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, consumer USB interfaces, and telecom DSL line cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB39CAHE3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The P6SMB Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping, AEC-Q101 validation, and surface-mount manufacturability are essential.
FAQ
What does the "CA" suffix indicate in P6SMB39CAHE3_B/I?
The "CA" suffix in P6SMB39CAHE3_B/I designates a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities. This eliminates the need for polarity-aware placement and makes it suitable for AC-coupled lines, differential buses, or ungrounded systems - unlike unidirectional variants (e.g., P6SMB39A) that require cathode alignment.
Is P6SMB39CAHE3_B/I qualified for automotive use?
Yes, P6SMB39CAHE3_B/I is AEC-Q101 qualified, as confirmed by the "HE3" and "_B" suffixes in its ordering code. It has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), making it approved for under-hood and ADAS sensor applications per automotive reliability standards.
What is the clamping voltage of P6SMB39CAHE3_B/I under standard test conditions?
P6SMB39CAHE3_B/I clamps to a maximum of 53.9 V at 11.1 A peak pulse current using the industry-standard 10/1000 μs double-exponential waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Can P6SMB39CAHE3_B/I replace P6SMB33CA in an existing design?
P6SMB39CAHE3_B/I is not a direct replacement for P6SMB33CA due to higher VWM (33.3 V vs. 28.2 V) and VBR (37.1–41.0 V vs. 31.4–34.7 V). Substituting it may reduce protection margin for lower-voltage rails. Verify system operating voltage and transient profile before substitution; consult Vishay's P6SMB family datasheet for cross-voltage comparisons.
What packaging format does P6SMB39CAHE3_B/I ship in?
P6SMB39CAHE3_B/I ships in 13-inch plastic tape and reel format (suffix "I"), containing 3200 units per reel. The packaging complies with EIA-481 standards and supports high-speed pick-and-place assembly. Tape dimensions and sprocket hole pitch match IPC-7351B recommendations for SMB (DO-214AA) devices.
P6SMB39CAHE3_B/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:
- Active
- 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:
- Telecom
- 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_B/I FAQ
1.How can I place an order for P6SMB39CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39CAHE3_B/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_B/I reliable?
The price and inventory of P6SMB39CAHE3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB39CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39CAHE3_B/I?
P6SMB39CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39CAHE3_B/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_B/I?
For technical support, including P6SMB39CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39CAHE3_B/I requirements.
6.How does Aetrix verify that P6SMB39CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB39CAHE3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB39CAHE3_B/I?
All P6SMB39CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39CAHE3_B/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_B/I part is unused and in its original packaging.
Return procedure for P6SMB39CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39CAHE3_B/I Tags
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