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Vishay General Semiconductor - Diodes Division P4SMA68AHM3/I
- Part No.:
- P4SMA68AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68AHM3/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,430
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Product details
Overview
P4SMA68AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), 92.0 V maximum clamping voltage (VC) at 4.3 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in industrial and automotive electronics.
For engineers reviewing the P4SMA68AHM3/I datasheet, P4SMA68AHM3/I pinout, P4SMA68AHM3/I application, or P4SMA68AHM3/I equivalent, this device is selected for robust overvoltage protection where AEC-Q101 qualification, low incremental surge resistance, and fast response time (<1 ns) are required in space-constrained PCB layouts.
Technical Context
The P4SMA68AHM3/I uses a glass-passivated silicon junction to achieve stable avalanche breakdown with ±5% VBR tolerance and 0.104 %/°C temperature coefficient. Its unidirectional polarity features a cathode band marking and supports reverse standoff voltage (VWM) of 58.1 V with only 1.0 µA max reverse leakage at that voltage.
Designed for surface-mount assembly on 5.0 mm × 5.0 mm copper pads, it delivers 400 W peak pulse power (derated to 300 W above 91 V), withstands 40 A non-repetitive forward surge (8.3 ms half-sine), and operates across –65 °C to +150 °C junction temperature range with MSL Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines precise avalanche initiation threshold for reliable clamping onset |
| VWM | 58.1 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 92.0 V at 4.3 A - clamped voltage seen by protected circuit during 10/1000 µs transient, limiting stress on downstream components |
| PPPM | 400 W (10/1000 µs) - peak transient energy absorption capability under standard surge waveform |
| IFSM | 40 A (8.3 ms half-sine) - surge current handling for short-duration forward faults without failure |
| TJ max | +150 °C - enables operation in under-hood automotive or high-temperature industrial environments |
| Package | SMA (DO-214AC) - industry-standard low-profile SMD outline with 5.28 mm length, compatible with automated pick-and-place |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 flammability rating, and cathode band marking for unidirectional polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge events |
| Cathode | Avalanche clamping terminal | Marked with band; connected to higher-potential side; initiates controlled breakdown during reverse overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for industrial and automotive supply chains (HM3 suffix) |
| 400 W peak pulse power | Withstands high-energy transients without degradation when mounted on recommended 5.0 mm × 5.0 mm copper pads |
| Fast response time | <1 ns typical - limits voltage overshoot before clamping engages, critical for protecting fast-switching MOSFETs |
| Low incremental surge resistance | Ensures minimal VC rise under high IPPM, preserving margin between clamped voltage and protected device's absolute maximum rating |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in body control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp spikes up to ISO 7637-2 Pulse 5a. Use Value: Withstands 400 W surges while maintaining VC ≤ 92.0 V, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation systems from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS installed at connector interface to shunt transients before reaching ADC front-end. Use Value: 1.0 µA leakage at 58.1 V ensures no signal drift in precision 4–20 mA loops; fast response preserves measurement integrity. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY power pins and data lines against induced surges in outdoor PoE switches. IC Role / Device Role / Timing Role: Unidirectional TVS on +3.3 V bias rail and bidirectional variants on differential pairs (e.g., P4SMA68CA). Use Value: 92.0 V clamping prevents latch-up in Gigabit PHYs; AEC-Q101 qualification ensures long-term field reliability. |
Use Scenario: Overvoltage protection on primary-side rectifier output in universal-input AC/DC adapters. IC Role / Device Role / Timing Role: TVS placed across bulk capacitor to absorb line-induced spikes during brownout recovery or lightning coupling. Use Value: 40 A IFSM rating handles inrush-related surges; halogen-free HM3 construction meets IEC 62368-1 sustainability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68A | Same VBR range (64.6–71.4 V), but rated for 400 W at 25 °C only; no AEC-Q101 qualification; JEDEC DO-214AC package identical | Targeted at commercial-grade consumer and computing applications, not automotive or harsh-environment industrial use | Select SMAJ68A only if AEC-Q101 compliance and extended temperature validation are unnecessary |
| 1.5SMC68A | Higher power rating (1500 W), larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), same VBR/VC specs | Used where higher surge margin is needed and board space allows larger footprint; not drop-in compatible due to pad layout mismatch | Choose 1.5SMC68A when system-level surge testing exceeds IEC 61000-4-5 Level 4 and SMA footprint is insufficient |
Compared with SMAJ68A, P4SMA68AHM3/I adds automotive qualification and tighter thermal derating control; versus 1.5SMC68A, it trades surge capacity for compactness and automated assembly compatibility-critical for dense power management modules.
Availability
P4SMA68AHM3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom line protection, and consumer power adapter designs requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA68AHM3/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive yet performance-critical transient suppression needs in automotive, industrial, and telecom infrastructure-designed for high-volume SMT deployment with validated AEC-Q101 and RoHS/halogen-free compliance.
FAQ
What is the maximum clamping voltage of the P4SMA68AHM3/I under a 10/1000 µs surge?
The P4SMA68AHM3/I has a maximum clamping voltage (VC) of 92.0 V when subjected to its rated peak pulse current of 4.3 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C with the device mounted on 5.0 mm × 5.0 mm copper pads per Vishay's test conditions. The P4SMA68AHM3/I maintains this clamping performance across its operational temperature range, making it suitable for protecting sensitive 75 V-rated components.
Does the P4SMA68AHM3/I meet automotive qualification standards?
Yes, the P4SMA68AHM3/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation revision 09-Jan-2024 (Document Number: 88367). It undergoes stress testing including high-temperature reverse bias, temperature cycling, and ESD per JESD22 standards. This qualification validates its use in automotive powertrain, body electronics, and ADAS subsystems where reliability under thermal and electrical stress is mandatory.
What is the reverse leakage current of the P4SMA68AHM3/I at its standoff voltage?
At its maximum working voltage (VWM) of 58.1 V, the P4SMA68AHM3/I exhibits a maximum reverse leakage current (ID) of 1.0 µA at TA = 25 °C. This low leakage ensures minimal power loss and signal interference in always-on circuits such as automotive sensor bias rails or industrial 4–20 mA loop interfaces. The P4SMA68AHM3/I maintains leakage below 5 µA up to 85 °C per Vishay's thermal derating curves.
Can the P4SMA68AHM3/I be used in bidirectional configurations?
No, the P4SMA68AHM3/I is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the P4SMA68CA variant (same VBR range, symmetric clamping in both polarities). Using the P4SMA68AHM3/I in reverse-biased mode would result in forward conduction rather than controlled avalanche, potentially damaging the device or failing to suppress positive transients.
What package type does the P4SMA68AHM3/I use, and what are its key mechanical features?
The P4SMA68AHM3/I uses the SMA (DO-214AC) surface-mount package: 5.28 mm long × 3.99 mm wide × 2.29 mm high, with matte tin-plated leads compliant with J-STD-002 solderability and JESD22-B102 whisker resistance Class 2. Its molding compound meets UL 94 V-0 flammability rating, and the package is rated MSL Level 1 (peak reflow temperature 260 °C), enabling compatibility with standard lead-free reflow profiles without baking.
P4SMA68AHM3/I 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:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA68AHM3/I FAQ
1.How can I place an order for P4SMA68AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68AHM3/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 P4SMA68AHM3/I reliable?
The price and inventory of P4SMA68AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA68AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA68AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68AHM3/I?
P4SMA68AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68AHM3/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 P4SMA68AHM3/I?
For technical support, including P4SMA68AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68AHM3/I requirements.
6.How does Aetrix verify that P4SMA68AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA68AHM3/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 P4SMA68AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA68AHM3/I?
All P4SMA68AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68AHM3/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 P4SMA68AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA68AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA68AHM3/I Tags
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