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Vishay General Semiconductor - Diodes Division P4SMA68CA-E3/61
- Part No.:
- P4SMA68CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68CA-E3/61.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,799
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Product details
Overview
P4SMA68CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 68 V breakdown voltage (VBR min/max = 64.6 V / 71.4 V at 1 mA), 58.1 V standoff voltage (VWM), 92.0 V maximum clamping voltage (VC) at 4.3 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the P4SMA68CA-E3/61 datasheet, P4SMA68CA-E3/61 pinout, P4SMA68CA-E3/61 application, or P4SMA68CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM ≈ 1.58), AEC-Q101 qualification eligibility (via HE3/HM3 variants), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions per JEDEC JESD22-A114 test conditions. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the low incremental surge resistance enables rapid energy diversion during ESD or lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and exhibits a thermal resistance of 120 °C/W (junction-to-ambient) under standard PCB mounting. Its MSL Level 1 rating (J-STD-020) and 260 °C lead-free reflow compatibility support high-volume manufacturing without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA - defines reliable conduction onset threshold in both directions |
| VWM | 58.1 V - maximum continuous working voltage before significant leakage begins |
| VC @ IPPM | 92.0 V at 4.3 A - clamped voltage during 10/1000 µs transient, limiting stress on downstream circuitry |
| PPPM | 400 W - peak transient power handling capacity under standardized surge waveform |
| IPPM | 4.3 A - maximum non-repetitive surge current the device safely clamps without degradation |
| Junction Temp. Range | –65 °C to +150 °C - supports operation in harsh industrial and automotive under-hood environments |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.28 mm × 4.50 mm footprint and 2.29 mm height |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, polarity-unmarked for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | One terminal of symmetrical PN junction; accepts surge current regardless of voltage polarity |
| Cathode | Transient current exit (either polarity) | Second terminal of symmetrical PN junction; completes clamping path during bidirectional events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance in both directions eliminates need for polarity-aware layout |
| 400 W peak pulse power | Handles high-energy transients from inductive switching or ESD without failure under 10/1000 µs waveform |
| Low clamping ratio (VC/VWM = 1.58) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio suppressors |
| MSL Level 1, 260 °C reflow | Enables single-pass lead-free assembly without baking or special handling |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications requiring validated reliability |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback signal lines against voltage spikes from relay coil de-energization or PWM switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS placed across motor driver inputs and microcontroller ADC inputs to clamp fast-rising transients. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces by limiting transient voltage to ≤92.0 V during 400 W surges. |
Use Scenario: Safeguarding CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control units. IC Role / Device Role / Timing Role: Primary line-level protection element on differential signal pairs and supply rails feeding automotive-grade sensors. Use Value: Maintains signal integrity during ISO 7637-2 pulse 1/2a/5a tests due to sub-100 ns response time and repeatable clamping behavior. |
| Telecom Power Supply Input | Consumer USB Port Protection |
|
Use Scenario: Secondary surge suppression on 12 V/24 V DC input rails after primary MOV or GDT stages in base station power modules. IC Role / Device Role / Timing Role: Fast-response secondary protector absorbing residual energy missed by bulkier front-end devices. Use Value: Extends system MTBF by preventing cumulative degradation of downstream DC-DC converters during repeated lightning-induced surges. |
Use Scenario: ESD protection on VBUS and D+/D− lines of USB 2.0 ports in smart home hubs and portable media players. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical at VWM) TVS placed directly at connector to shunt human-body-model (HBM) discharges. Use Value: Meets IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) without distorting high-speed data signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | Higher 64 V VWM, 100 W lower PPPM (300 W), SMB package (larger footprint) | Lower clamping voltage (103 V) but reduced surge margin; suited for space-constrained designs where 400 W is not required | Select when board area allows SMB and system surge profile fits 300 W rating |
| 1.5KE68CA | Through-hole DO-201 package, same VWM/VBR, 1500 W PPPM, higher VC (118 V) | Designed for high-energy AC-line protection; incompatible with SMT-only production | Choose only for prototyping or legacy through-hole systems needing higher peak power |
Compared with SMBJ64CA and 1.5KE68CA, P4SMA68CA-E3/61 delivers optimal balance of compact SMA footprint, 400 W surge capability, and tight 92.0 V clamping-making it preferred for modern SMT-based industrial and automotive electronics where board space and consistent clamping performance are critical.
Availability
P4SMA68CA-E3/61 is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, telecom power supply input, and consumer USB port protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for P4SMA68CA-E3/61 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, and protection devices with emphasis on reliability, precision, and high-volume manufacturability.
The P4SMA Series targets cost-sensitive, high-reliability transient suppression in consumer, industrial, and automotive electronics - engineered for automated SMT assembly, robust surge handling, and long-term stability under thermal cycling.
FAQ
What is the clamping voltage of P4SMA68CA-E3/61 at its rated peak pulse current?
The P4SMA68CA-E3/61 has a maximum clamping voltage (VC) of 92.0 V at its rated peak pulse current (IPPM) of 4.3 A under a 10/1000 µs waveform. This value is measured per JEDEC standards and reflects the upper limit of voltage seen by protected circuitry during worst-case transient events. The P4SMA68CA-E3/61 maintains this clamping performance symmetrically in both directions due to its bidirectional construction.
Is P4SMA68CA-E3/61 suitable for automotive applications?
The base P4SMA68CA-E3/61 is commercial-grade and RoHS-compliant, but not AEC-Q101 qualified. However, Vishay offers automotive-qualified variants - P4SMA68CAHE3_A and P4SMA68CAHM3_A - which share identical electrical specs and SMA packaging while meeting AEC-Q101 stress testing requirements. For automotive use, specify the HE3 or HM3 suffix; the P4SMA68CA-E3/61 itself is intended for industrial and consumer applications.
What is the standoff voltage (VWM) of P4SMA68CA-E3/61 and why does it matter?
The standoff voltage (VWM) of P4SMA68CA-E3/61 is 58.1 V - the maximum continuous DC or RMS voltage the device can withstand without entering breakdown. This parameter ensures the P4SMA68CA-E3/61 remains non-conductive during normal operation, minimizing leakage current (<1 µA) and avoiding interference with signal integrity or power efficiency. It must be selected ≥10–20% above the system's maximum operating voltage.
Does P4SMA68CA-E3/61 have polarity markings on the package?
No, P4SMA68CA-E3/61 does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional types (which feature a cathode band), the P4SMA68CA-E3/61 uses a symmetrical junction structure and functions identically regardless of voltage polarity. This eliminates orientation errors during automated placement and simplifies PCB layout - a key advantage confirmed in Vishay's P4SMA series documentation.
What is the thermal resistance of P4SMA68CA-E3/61 and how does it affect derating?
The P4SMA68CA-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on standard 0.2" × 0.2" copper pads. This value determines how much the device's peak pulse power must be reduced at elevated ambient temperatures - for example, derating begins above 25 °C per Figure 2 in the datasheet, reaching ~50% of 400 W at 100 °C ambient. Proper PCB copper area is essential to maintain P4SMA68CA-E3/61 reliability under sustained surge conditions.
P4SMA68CA-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, 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):
- 4.3A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
P4SMA68CA-E3/61 FAQ
1.How can I place an order for P4SMA68CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68CA-E3/61 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 P4SMA68CA-E3/61 reliable?
The price and inventory of P4SMA68CA-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA68CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA68CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68CA-E3/61?
P4SMA68CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68CA-E3/61 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 P4SMA68CA-E3/61?
For technical support, including P4SMA68CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA68CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA68CA-E3/61 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 P4SMA68CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA68CA-E3/61?
All P4SMA68CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68CA-E3/61, 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 P4SMA68CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA68CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA68CA-E3/61 Tags
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