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Vishay General Semiconductor - Diodes Division P4SMA68A-M3/5A
- Part No.:
- P4SMA68A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68A-M3/5A.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,680
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Product details
Overview
P4SMA68A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 64.6 V minimum breakdown voltage (VBR), 58.1 V maximum standoff voltage (VWM), 92.0 V maximum clamping voltage (VC) at 4.3 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the P4SMA68A-M3/5A datasheet, P4SMA68A-M3/5A pinout, P4SMA68A-M3/5A application, or P4SMA68A-M3/5A equivalent, this page delivers verified electrical parameters, thermal resistance (RθJA = 120 °C/W), polarity marking (cathode band), RoHS/halogen-free compliance (M3 suffix), and AEC-Q101 qualification status - all critical for ESD/surge protection design-in and BOM validation.
Technical Context
The P4SMA68A-M3/5A operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (64.6–71.4 V at 1 mA test current). Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) to transient events like inductive switching spikes or ESD.
Thermally, it is rated for junction temperatures from –65 °C to +150 °C, with 3.3 W steady-state power dissipation on infinite heatsink at 50 °C ambient. Mounted on 5.0 mm × 5.0 mm copper pads, it delivers full 400 W pulse capability below 91 V; above that, derated to 300 W per Fig. 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 58.1 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC bias margin. |
| VBR (Breakdown) | 64.6–71.4 V at 1 mA - Avalanche conduction onset range; determines minimum overvoltage trip point. |
| VC (Clamping) | 92.0 V at 4.3 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; sets worst-case stress level. |
| PPPM | 400 W - Peak transient energy absorption capacity under standard 10/1000 µs waveform; validates robustness against common surges. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance; dictates required PCB copper area for thermal management. |
| IFSM | 40 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports inrush current handling in power rail applications. |
| TJmax | +150 °C - Maximum allowable junction temperature; enables operation in high-ambient environments like engine compartments. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant (M3 suffix), MSL Level 1 (260 °C reflow peak), matte tin-plated leads solderable per J-STD-002/JESD 22-B102. Polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side (e.g., GND or return path); defines directionality of clamping action. |
| Cathode | Avalanche conduction terminal / Surge sink node | Marked with band; connected to protected line (e.g., 48 V rail or CAN_H); conducts surge current to ground path. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without derating on standard PCB layouts. |
| Glass passivated chip junction | Ensures long-term VBR stability and low parameter drift across temperature and lifetime cycling. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., <100 ns ESD events), improving protection margin. |
| AEC-Q101 qualified (P4SMA68A-M3 variant) | Validated for automotive-grade reliability including HTOL, TC, and HAST - suitable for body control modules and ADAS sensors. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile use without baking, reducing manufacturing overhead. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting 12 V/24 V microcontroller I/O lines from load dump and alternator ripple in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MCU GPIO and external connector to clamp negative transients and suppress positive spikes up to 100 V. Use Value: Prevents latch-up and gate oxide damage in 3.3 V/5 V logic interfaces while maintaining signal integrity via low capacitance (<100 pF at VWM). |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on input front-end, shunting >500 V transients to chassis ground before reaching optocoupler or Schmitt trigger. Use Value: Enables reliable operation under IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity testing without additional filtering components. |
| Telecom Power Supply Rail | Consumer Appliance Motor Driver |
Use Scenario: Clamping voltage spikes on +48 V telecom power distribution bus caused by hot-swap events or cable discharge. IC Role / Device Role / Timing Role: Primary overvoltage protector upstream of DC-DC converters and PMICs, sized to absorb 400 W pulses without failure. Use Value: Maintains system uptime by preventing catastrophic failure of downstream regulators during repeated surge exposure. |
Use Scenario: Suppressing inductive kickback from brushed DC motor commutation in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Fast-response TVS across motor terminals or H-bridge outputs to limit voltage reversal and prevent MOSFET avalanche breakdown. Use Value: Extends MOSFET lifetime by limiting VDS stress to ≤92 V during 100 A+ switching events, avoiding secondary breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68A-E3/5A (Vishay) | Same VWM/VBR/VC, but 400 W rating applies only up to 68 V; no AEC-Q101 qualification; E3 suffix = standard RoHS, not halogen-free. | Lacks automotive qualification and halogen-free certification; suitable for commercial-grade power supplies but not automotive Tier-1 designs. | Select when cost sensitivity outweighs AEC-Q101 or halogen-free requirements; verify layout compatibility (same SMA package). |
| 1.5SMC68A (ON Semiconductor) | Identical VWM (58.1 V), VBR (64.6–71.4 V), VC (92.0 V), and PPPM (400 W); same SMA package; AEC-Q101 qualified in HM3 variant, but base part is commercial grade. | Requires explicit ordering of HM3 suffix for halogen-free/AEC-Q101 compliance; otherwise identical performance in non-automotive contexts. | Use as drop-in alternative if sourcing flexibility is needed; confirm M3/HM3 suffix match for compliance-critical programs. |
Compared with SMAJ68A-E3/5A, P4SMA68A-M3/5A provides halogen-free construction and AEC-Q101 qualification out-of-box; versus 1.5SMC68A, it offers guaranteed M3 compliance without requiring suffix selection - simplifying procurement for automotive and green-electronics programs.
Availability
P4SMA68A-M3/5A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC inputs, telecom power rails, and consumer appliance motor drivers requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA68A-M3/5A 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 power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series was developed for high-reliability transient suppression in space-constrained surface-mount applications, targeting automotive, industrial, and telecom systems where robustness against repetitive surges and long-term parameter stability are mandatory.
FAQ
What is the clamping voltage of P4SMA68A-M3/5A at its rated peak pulse current?
The P4SMA68A-M3/5A has a maximum clamping voltage (VC) of 92.0 V at 4.3 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the device mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per Figure 1 in the Vishay datasheet 88367. The clamping voltage defines the upper voltage limit imposed on the protected circuit during surge events, making it critical for ensuring downstream ICs remain within absolute maximum ratings. P4SMA68A-M3/5A maintains this performance across its full operating temperature range.
Is P4SMA68A-M3/5A qualified for automotive applications?
Yes, P4SMA68A-M3/5A is AEC-Q101 qualified, as confirmed in the Vishay P4SMA Series datasheet revision 09-Jan-2024 (Document Number: 88367), footnote (1) on page 3. The "M3" suffix denotes halogen-free, RoHS-compliant construction, and the "A" suffix indicates AEC-Q101 qualification for the 6.8 V to 220 V range - which includes P4SMA68A-M3/5A. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing, validating suitability for under-hood and body-control applications. P4SMA68A-M3/5A meets these requirements without requiring special ordering codes.
What does the "M3/5A" suffix mean in P4SMA68A-M3/5A?
The "M3" suffix in P4SMA68A-M3/5A indicates halogen-free, RoHS-compliant construction per Vishay's material categorization standards, while "/5A" specifies packaging in 13-inch diameter plastic tape and reel containing 7500 units. This differs from "/61", which denotes 7-inch reels of 1800 units. The M3 designation ensures compliance with environmental regulations such as EU RoHS Directive 2011/65/EU and JEDEC JS709C, and supports automotive PPAP documentation. P4SMA68A-M3/5A is therefore suitable for green-electronics manufacturing and high-volume SMT assembly lines requiring full traceability and regulatory alignment.
How does P4SMA68A-M3/5A compare to bidirectional TVS diodes like P4SMA68CA-M3/5A?
P4SMA68A-M3/5A is unidirectional and intended for DC circuits where polarity is fixed (e.g., +48 V rails or 24 V inputs), offering tighter VWM (58.1 V) and lower leakage (<1 µA) than its bidirectional counterpart P4SMA68CA-M3/5A (VWM = 58.1 V but dual-direction conduction). The CA version supports AC or floating signal lines but exhibits higher reverse leakage at VWM. For applications like automotive battery monitoring or industrial sensor power feeds, P4SMA68A-M3/5A provides superior DC blocking and lower standby power loss. Both share identical package, clamping, and surge ratings, but P4SMA68A-M3/5A must be oriented correctly with cathode toward the protected line.
What is the thermal resistance and maximum junction temperature of P4SMA68A-M3/5A?
P4SMA68A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on standard PCB pads, and a maximum junction temperature (TJmax) of +150 °C. Its junction-to-lead resistance (RθJL) is 30 °C/W, indicating efficient heat transfer to PCB copper. These values allow operation in ambient temperatures up to +125 °C when properly laid out - critical for under-hood automotive modules or enclosed industrial drives. Derating curves in Figure 2 of the datasheet show usable power decreases linearly above 25 °C ambient, and P4SMA68A-M3/5A remains functional up to TJ = 150 °C without parametric shift or failure.
P4SMA68A-M3/5A 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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA68A-M3/5A FAQ
1.How can I place an order for P4SMA68A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68A-M3/5A 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 P4SMA68A-M3/5A reliable?
The price and inventory of P4SMA68A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA68A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA68A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68A-M3/5A?
P4SMA68A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68A-M3/5A 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 P4SMA68A-M3/5A?
For technical support, including P4SMA68A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68A-M3/5A requirements.
6.How does Aetrix verify that P4SMA68A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA68A-M3/5A 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 P4SMA68A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA68A-M3/5A?
All P4SMA68A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68A-M3/5A, 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 P4SMA68A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA68A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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