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Vishay General Semiconductor - Diodes Division P6SMB68CA-E3/5B
- Part No.:
- P6SMB68CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CA-E3/5B.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,653
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Product details
Overview
P6SMB68CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 600 W peak pulse power with 10/1000 μs waveform, 68 V breakdown voltage (VBR min/max = 64.6–71.4 V at 1 mA), and 92.0 V maximum clamping voltage (VC) at 6.5 A peak pulse current - deployed for overvoltage protection of signal lines in automotive sensor units and industrial I/O interfaces.
For engineers reviewing the P6SMB68CA-E3/5B datasheet, P6SMB68CA-E3/5B pinout, P6SMB68CA-E3/5B application, or P6SMB68CA-E3/5B equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, RoHS-compliant commercial-grade packaging, thermal derating curves, and AEC-Q101-qualified alternatives for automotive ESD/surge hardening.
Technical Context
This TVS operates symmetrically in both directions due to its CA suffix designation, enabling suppression of positive and negative transients without polarity dependency. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at 58.1 V stand-off), while MSL Level 1 moisture sensitivity supports lead-free reflow up to 260 °C peak.
The device exhibits fast response time (<1.0 ns), low incremental surge resistance, and thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads. It is not a voltage regulator or rectifier - it conducts only during transient overvoltage events exceeding VWM = 58.1 V, clamping downstream circuitry at ≤92.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA test current - defines precise voltage threshold where avalanche conduction begins in either polarity |
| VWM | 58.1 V - maximum continuous reverse operating voltage before significant leakage; sets safe margin below VBR |
| VC @ IPPM | 92.0 V at 6.5 A - clamping voltage during 10/1000 μs surge; determines worst-case stress on protected IC or MOSFET |
| PPPM | 600 W - peak pulse power handling capability under standardized surge waveform; validates robustness against IEC 61000-4-5 Level 4 |
| IPPM | 6.5 A - peak pulse current corresponding to VC; used to size series impedance for current limiting |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments with proper PCB thermal design |
| Package | SMB (DO-214AA) - surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow soldering |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (negative polarity event) | Conducts during negative surges; forms symmetrical path with cathode for full bidirectional clamping |
| Cathode | Transient current entry point (positive polarity event) | Conducts during positive surges; paired with anode to enable equal clamping in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VC, and leakage performance in both polarities - eliminates need for orientation-aware layout |
| Glass-passivated junction | Stable avalanche characteristics over temperature and lifetime; reduces parameter drift vs. epoxy-passivated alternatives |
| 600 W 10/1000 μs surge rating | Validated per IEC 61000-4-5; withstands repeated lightning-induced transients in industrial fieldbus nodes |
| MSL Level 1 rating | Zero bake requirement before reflow; supports standard SMT assembly without moisture-sensitive handling protocols |
| RoHS-compliant E3 suffix | Lead-free, halogen-free formulation compliant with EU Directive 2011/65/EU; suitable for consumer and industrial end markets |
Applications
| Automotive Sensor 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 ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector interface to shunt transients before reaching signal conditioning circuitry. Use Value: Clamps 58.1 V stand-off to ≤92.0 V during 6.5 A surges, preserving integrity of 5 V or 3.3 V microcontrollers and ADC front-ends. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against inductive switching spikes from solenoids and relays. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted across input terminals to absorb repetitive 600 W surges without degradation. Use Value: Maintains <1.0 μA leakage at 58.1 V, preventing false triggering in high-impedance sensing circuits while surviving >1000 surge events. |
| Telecom Line Interface | Consumer USB Port Protection |
|
Use Scenario: Shielding RS-485 transceivers in base station backhaul links from EFT and surge events induced by nearby lightning strikes. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair lines, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: 92.0 V clamping limits stress on ±5 V transceiver rails, enabling compliance with ITU-T K.20 and Telcordia GR-1089-CORE. |
Use Scenario: Adding robust ESD immunity to USB 2.0 data lines (D+/D−) in set-top boxes and smart displays exposed to human-body-model discharges. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed adjacent to USB connector to minimize signal distortion. Use Value: Sub-100 pF junction capacitance (typ.) preserves signal integrity up to 480 Mbps while passing IEC 61000-4-2 ±15 kV contact discharge. |
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 | Same VBR range (64.6–71.4 V) and PPPM = 400 W; SMA package (smaller footprint, higher RθJA = 150 °C/W) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 without parallel staging | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin on 2.5 mm × 2.5 mm pads |
| P6SMB68CAHE3_B | Identical electrical specs; AEC-Q101 qualified, MSL Level 1, same SMB package; HE3 suffix denotes automotive grade | Qualified for under-hood automotive use (−40 °C to +125 °C ambient); required for OEM Tier-1 supply chains | Choose for automotive production programs needing PPAP documentation and extended reliability validation |
Compared with SMAJ68CA, P6SMB68CA-E3/5B delivers 50% higher surge power headroom and better thermal dissipation; versus P6SMB68CAHE3_B, it shares identical protection performance but lacks AEC-Q101 certification - making it optimal for industrial and commercial designs where cost and availability are prioritized over automotive qualification.
Availability
P6SMB68CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, telecom line interface shielding, and consumer USB port ESD mitigation requiring stable component supply across high-volume production runs.
Supply support for P6SMB68CA-E3/5B 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in space-constrained surface-mount applications, designed specifically for robustness against inductive switching, ESD, and lightning-induced surges in automotive, industrial, and communications infrastructure.
FAQ
What does the "CA" suffix indicate in P6SMB68CA-E3/5B?
The "CA" suffix in P6SMB68CA-E3/5B explicitly denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression for both positive and negative polarity surges without polarity dependence. This distinguishes it from unidirectional variants (e.g., P6SMB68A), which require correct anode/cathode orientation. The P6SMB68CA-E3/5B achieves matched VBR, VC, and leakage in both directions, simplifying layout and enhancing protection coverage for AC-coupled or differential signal paths.
Is P6SMB68CA-E3/5B RoHS-compliant and lead-free?
Yes, P6SMB68CA-E3/5B is fully RoHS-compliant and lead-free, as confirmed by the "E3" suffix per Vishay's ordering nomenclature. It meets EU Directive 2011/65/EU requirements and uses matte tin-plated leads solderable per J-STD-002. The molding compound satisfies UL 94 V-0 flammability rating, and the device undergoes JESD 201 Class 2 whisker testing. No exemptions or lead-containing materials are used in the construction of the P6SMB68CA-E3/5B.
What is the maximum clamping voltage of P6SMB68CA-E3/5B under surge conditions?
The maximum clamping voltage (VC) of P6SMB68CA-E3/5B is 92.0 V, measured at its rated peak pulse current (IPPM) of 6.5 A under the standardized 10/1000 μs double-exponential waveform. This value represents the worst-case voltage imposed on protected circuitry during a full-power transient event. Engineers must ensure downstream components (e.g., microcontrollers, transceivers) have absolute maximum ratings exceeding 92.0 V to guarantee functional safety during surge events.
Can P6SMB68CA-E3/5B replace P6SMB68A in an existing design?
No, P6SMB68CA-E3/5B cannot directly replace unidirectional P6SMB68A without layout verification. While both share identical VBR (64.6–71.4 V), VWM (58.1 V), and package (SMB), the P6SMB68A is unidirectional and requires correct cathode orientation, whereas P6SMB68CA-E3/5B is bidirectional with no polarity marking. Swapping them may cause improper clamping if the original design relies on directional blocking - always confirm signal path symmetry and validate clamping behavior with oscilloscope testing before substitution.
What is the thermal resistance and recommended pad layout for P6SMB68CA-E3/5B?
P6SMB68CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. The datasheet specifies this pad size as critical for achieving rated 600 W pulse power and avoiding thermal runaway during repetitive surges. Reducing pad area increases RθJA, derating both peak power and safe operating duration - always follow Vishay's layout guidelines in Document Number 88370 to maintain P6SMB68CA-E3/5B performance integrity.
P6SMB68CA-E3/5B 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB68CA-E3/5B FAQ
1.How can I place an order for P6SMB68CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CA-E3/5B 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 P6SMB68CA-E3/5B reliable?
The price and inventory of P6SMB68CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB68CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CA-E3/5B?
P6SMB68CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CA-E3/5B 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 P6SMB68CA-E3/5B?
For technical support, including P6SMB68CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB68CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB68CA-E3/5B 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 P6SMB68CA-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB68CA-E3/5B?
All P6SMB68CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CA-E3/5B, 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 P6SMB68CA-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB68CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CA-E3/5B Tags
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