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Vishay General Semiconductor - Diodes Division P6SMB68CAHE3_B/I
- Part No.:
- P6SMB68CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CAHE3_B/I.pdf
- Description:
- 600W,68V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,465
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Product details
Overview
P6SMB68CAHE3_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 and power lines. It features a 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), 92.0 V maximum clamping voltage (VC) at 6.5 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect automotive sensor interfaces, industrial I/O ports, and telecom line drivers.
For engineers reviewing the P6SMB68CAHE3_B/I datasheet, P6SMB68CAHE3_B/I pinout, P6SMB68CAHE3_B/I application, or P6SMB68CAHE3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and low incremental surge resistance for robust ESD and lightning surge immunity in harsh environments.
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 constraints. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), while the low Rsurge supports effective energy diversion 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 thermal resistance (RθJA = 100 °C/W) assumes mounting on 0.2" × 0.2" copper pads - critical for sustaining 600 W pulse power under derated conditions above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 64.6–71.4 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage events |
| Stand-off Voltage VWM | 58.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| Clamping Voltage VC | 92.0 V at 6.5 A IPPM - actual voltage seen by protected circuit during 10/1000 µs surge |
| Peak Pulse Power PPPM | 600 W - energy-handling capacity for transient suppression per JEDEC standard waveform |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint and matte tin-plated leads |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Operating Temperature | −65 °C to +150 °C - enables deployment in under-hood and industrial control environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity - no fixed polarity |
| Terminal 2 | Anode / Cathode (bidirectional) | Complementary terminal forming symmetrical clamping path - identical electrical role to Terminal 1 |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without degradation |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, ADAS sensors, and body electronics |
| Glass passivated junction | Ensures <1.0 µA reverse leakage at VWM, minimizing standby power loss in battery-powered systems |
| Low clamping ratio (VC/VBR ≈ 1.43) | Reduces stress on downstream ICs by limiting let-through voltage during fast transients |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - simplifies manufacturing logistics |
Applications
| Automotive Sensor Protection | Industrial Ethernet Port Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply rail. Use Value: Maintains signal integrity below 92.0 V during 6.5 A surge, preventing latch-up or damage to 3.3 V/5 V transceivers. |
Use Scenario: Safeguarding RJ45 PHY interface pins against ESD (IEC 61000-4-2 ±15 kV) and surge (IEC 61000-4-5 2 kV) in factory automation gateways. IC Role / Device Role / Timing Role: Primary front-end TVS on each twisted-pair line (TX+/TX−, RX+/RX−). Use Value: Sub-1 ns response captures fast transients before they reach magnetics or PHY IC, preserving data link stability. |
| Telecom Line Driver Protection | Consumer Audio Interface Protection |
Use Scenario: Shielding analog/digital telephony line drivers (e.g., SLIC circuits) from lightning-induced surges on PSTN or VoIP trunk lines. IC Role / Device Role / Timing Role: Secondary-level TVS mounted after gas discharge tube (GDT) in hybrid protection network. Use Value: Clamps residual transients to ≤92.0 V after GDT crowbarring, protecting low-voltage op-amps and ADCs. |
Use Scenario: Guarding 3.5 mm audio jack inputs/outputs in smart speakers and headsets against user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on unbalanced line (tip/ring/shield). Use Value: Adds <0.5 pF typical capacitance (per datasheet Fig. 4), avoiding high-frequency signal attenuation in 20 kHz audio band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68CA | 400 W PPPM, same VBR range, SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤2 kV |
| 1.5KE68CA | 1500 W PPPM, through-hole DO-201 package, higher VC (118 V) | Requires PCB through-holes; higher clamping increases risk to 5 V logic | Choose for legacy designs needing higher energy handling but accepting larger form factor |
Compared with SMAJ68CA and 1.5KE68CA, P6SMB68CAHE3_B/I delivers optimal balance of 600 W surge capability, SMB surface-mount compatibility, AEC-Q101 qualification, and tight 92.0 V clamping - making it preferred for new automotive and industrial SMT designs where reliability and layout efficiency are co-prioritized.
Availability
P6SMB68CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial Ethernet gateways, and telecom line interface cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB68CAHE3_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 was developed specifically for high-power, surface-mount transient suppression in automotive, industrial, and telecom infrastructure - prioritizing AEC-Q101 compliance, low clamping voltage, and robust surge endurance in compact SMB packaging.
FAQ
What does the "CA" suffix indicate in P6SMB68CAHE3_B/I?
The "CA" suffix denotes that P6SMB68CAHE3_B/I is a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., P6SMB68A), this version provides symmetrical clamping in both polarities - essential for protecting AC-coupled signals, differential buses like CAN or RS-485, and transformer-isolated interfaces without polarity concerns. The device has no cathode marking.
Is P6SMB68CAHE3_B/I suitable for automotive applications?
Yes, P6SMB68CAHE3_B/I is AEC-Q101 qualified (indicated by the "HE3" suffix and "_B" revision code). It has undergone rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per automotive standards - making it approved for use in engine control units, ADAS camera modules, and body control modules where reliability under thermal and electrical stress is mandatory.
What is the maximum clamping voltage of P6SMB68CAHE3_B/I and why does it matter?
The maximum clamping voltage (VC) of P6SMB68CAHE3_B/I is 92.0 V at 6.5 A peak pulse current (IPPM). This value represents the highest voltage imposed on the protected circuit during a standardized 10/1000 µs surge. A lower VC relative to VBR (clamping ratio ≈ 1.43) ensures downstream 5 V or 12 V ICs remain within safe operating limits - directly preventing overvoltage failure in sensitive receivers and microcontrollers.
How does the SMB (DO-214AA) package of P6SMB68CAHE3_B/I compare to SMA or SMC packages?
P6SMB68CAHE3_B/I uses the SMB (DO-214AA) package - larger than SMA (DO-214AC) but smaller than SMC (DO-214AB). Its 0.220" × 0.130" footprint offers better thermal dissipation than SMA (RθJA = 100 °C/W vs. ~125 °C/W), while maintaining compatibility with standard SMT pick-and-place equipment. Unlike SMC, SMB avoids excessive board area usage - striking a balance between power handling and layout density for mid-range TVS requirements.
Does P6SMB68CAHE3_B/I require derating at elevated ambient temperatures?
Yes, P6SMB68CAHE3_B/I must be derated above 25 °C ambient per Figure 2 in the datasheet. Its 600 W peak pulse power rating decreases linearly: at 85 °C ambient, usable PPPM drops to ~420 W; at 125 °C, it falls to ~240 W. Designers must verify clamping performance under worst-case thermal conditions - especially in enclosed automotive or industrial enclosures - using the published derating curve to ensure sustained surge immunity.
P6SMB68CAHE3_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):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- 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)
P6SMB68CAHE3_B/I FAQ
1.How can I place an order for P6SMB68CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CAHE3_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 P6SMB68CAHE3_B/I reliable?
The price and inventory of P6SMB68CAHE3_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 P6SMB68CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB68CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CAHE3_B/I?
P6SMB68CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CAHE3_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 P6SMB68CAHE3_B/I?
For technical support, including P6SMB68CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CAHE3_B/I requirements.
6.How does Aetrix verify that P6SMB68CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB68CAHE3_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 P6SMB68CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB68CAHE3_B/I?
All P6SMB68CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CAHE3_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 P6SMB68CAHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB68CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CAHE3_B/I Tags
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