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Vishay General Semiconductor - Diodes Division P4SMA68AHE3_A/I
- Part No.:
- P4SMA68AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68AHE3_A/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,878
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Product details
Overview
P4SMA68AHE3_A/I 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 a 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 - suitable for protecting automotive-grade MOSFETs and sensor interfaces against inductive switching surges.
For engineers reviewing the P4SMA68AHE3_A/I datasheet, P4SMA68AHE3_A/I pinout, P4SMA68AHE3_A/I application, or P4SMA68AHE3_A/I equivalent, this AEC-Q101 qualified TVS offers validated transient suppression performance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial PCB designs requiring robust ESD and surge immunity without layout redesign.
Technical Context
The P4SMA68AHE3_A/I operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown characteristics and fast response to transients (<1 ns). Its clamping action begins at VWM = 58.1 V and fully engages at VBR ≥ 64.6 V under 1 mA test current, delivering predictable protection across -65 °C to +150 °C junction temperature range.
Thermally, it exhibits RθJA = 120 °C/W (junction-to-ambient, on recommended 0.2" × 0.2" copper pads) and RθJL = 30 °C/W (junction-to-lead), enabling reliable operation at 3.3 W steady-state power dissipation. The device meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements, confirming suitability for automated SMT assembly and harsh-environment deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 58.1 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold. |
| VBR (Breakdown, min) | 64.6 V at 1 mA - Guaranteed avalanche initiation voltage; ensures consistent turn-on across production lots. |
| VC (Clamping, max) | 92.0 V at IPPM = 4.3 A - Peak voltage seen by protected circuit during 10/1000 µs surge; defines worst-case stress level. |
| PPPM | 400 W - Surge energy handling capacity with standard 10/1000 µs waveform; supports repetitive 0.01% duty cycle events. |
| IFSM | 40 A - Single half-sine 8.3 ms surge current rating; validates robustness against power-line fault transients. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic systems per stress-test requirements including HTOL, TCT, and ESD HBM/MM. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| Anode (unmarked end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and ADAS sensor interfaces. |
| 400 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive load switching without degradation in automotive and industrial systems. |
| Glass-passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 µA at VWM), and long-term reliability under thermal cycling. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning or baking. |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for enclosed automotive and industrial enclosures. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in vehicle body control modules from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between VIN and GND, activated within nanoseconds of overvoltage onset. Use Value: Limits transient voltage to ≤92.0 V, preventing damage to downstream 5 V LDOs and MCU I/O pins rated for 6 V absolute maximum. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation PLCs exposed to EMI and relay coil kickback. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional suppressor (cathode grounded) shunting induced spikes on signal return paths. Use Value: Maintains signal integrity by clamping transients to <92.0 V while adding only 1.2 pF typical junction capacitance at 0 V bias. |
| Telecom DC Power Interface | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding PoE-powered Ethernet switch ports from lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary-level TVS on DC input stage, coordinated with upstream GDT and downstream π-filter. Use Value: Absorbs up to 400 W of surge energy per event, reducing stress on secondary-stage TVS arrays and enabling compliance with IEC 61000-4-5 Level 4. |
Use Scenario: Suppressing commutation spikes generated by brushed DC motors in smart home vacuum cleaners and HVAC blowers. IC Role / Device Role / Timing Role: Unidirectional clamp across motor terminals, referenced to chassis ground to divert inductive kickback. Use Value: Withstands 40 A non-repetitive forward surge (8.3 ms), preventing MOSFET drain-source avalanche failure during abrupt motor stop/start cycles. |
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 | Same SMA package, 64.6–71.4 V VBR, but rated for 400 W with 10/1000 µs waveform and lacks AEC-Q101 qualification. | Approved for commercial/industrial use only; not validated for automotive temperature cycling or humidity testing. | Select when AEC-Q101 is not required and cost optimization is prioritized over automotive qualification. |
| 1.5SMC68A | Higher-power SMC package (1500 W rating), same VBR range, but larger footprint (7.11 × 6.22 mm vs. SMA's 4.5 × 2.79 mm) and higher VC (118 V). | Suitable for high-energy surge zones (e.g., AC mains entry), not space-constrained board areas like ECUs or sensor modules. | Choose when board layout allows larger package and higher clamping voltage is acceptable for downstream component ratings. |
Compared with SMAJ68A-E3/5A and 1.5SMC68A, the P4SMA68AHE3_A/I uniquely combines AEC-Q101 qualification, compact SMA footprint, and precise 92.0 V clamping - making it the optimal choice for automotive and space-limited industrial designs where qualification and layout efficiency are non-negotiable.
Availability
P4SMA68AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC power rail stabilization requiring stable component supply, full traceability, and lifecycle continuity support.
Supply support for P4SMA68AHE3_A/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, and protection devices with emphasis on reliability, precision, and application-specific validation.
The P4SMA68AHE3_A/I belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-speed, high-energy transient suppression in automotive, industrial, and communications infrastructure - balancing clamping accuracy, surge robustness, and manufacturability.
FAQ
What is the clamping voltage of the P4SMA68AHE3_A/I under maximum rated surge current?
The P4SMA68AHE3_A/I has a maximum clamping voltage (VC) of 92.0 V at 4.3 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage the protected circuit will experience during a defined transient event. The P4SMA68AHE3_A/I maintains this clamping performance due to its low incremental surge resistance and glass-passivated junction design.
Is the P4SMA68AHE3_A/I suitable for automotive applications?
Yes, the P4SMA68AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix and revision "A" in its ordering code. It has undergone stress testing including high-temperature operating life, temperature cycling, and ESD per AEC-Q101 requirements. The P4SMA68AHE3_A/I is deployed in engine control units, body electronics, and ADAS sensor modules where reliability under thermal and electrical stress is mandatory.
What is the standoff voltage rating of the P4SMA68AHE3_A/I?
The P4SMA68AHE3_A/I has a maximum working peak reverse voltage (VWM) of 58.1 V, meaning it remains in high-impedance blocking state up to this DC or RMS voltage level. This provides a 6.5 V design margin below the minimum breakdown voltage (64.6 V), ensuring minimal leakage (<1 µA) during normal operation while allowing sufficient headroom for line ripple and tolerance stack-up. The P4SMA68AHE3_A/I leverages this margin to avoid false triggering in noisy 48 V or 24 V automotive subsystems.
Does the P4SMA68AHE3_A/I have a bidirectional variant?
No - the P4SMA68AHE3_A/I is strictly unidirectional, indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay offers the P4SMA68CA series (e.g., P4SMA68CAHE3_A/I), which provides symmetrical clamping in both polarities and omits the polarity band. The P4SMA68AHE3_A/I must be oriented with the cathode toward the protected line and anode to ground to function correctly; reverse orientation will result in forward conduction and potential failure.
What is the thermal resistance of the P4SMA68AHE3_A/I in standard mounting conditions?
The P4SMA68AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per JEDEC standards. Its junction-to-lead resistance (RθJL) is 30 °C/W, supporting efficient heat transfer to PCB copper. These values enable the P4SMA68AHE3_A/I to sustain 3.3 W steady-state power dissipation at +50 °C ambient, critical for thermally dense automotive module layouts.
P4SMA68AHE3_A/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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA68AHE3_A/I FAQ
1.How can I place an order for P4SMA68AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68AHE3_A/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 P4SMA68AHE3_A/I reliable?
The price and inventory of P4SMA68AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA68AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA68AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68AHE3_A/I?
P4SMA68AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68AHE3_A/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 P4SMA68AHE3_A/I?
For technical support, including P4SMA68AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68AHE3_A/I requirements.
6.How does Aetrix verify that P4SMA68AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA68AHE3_A/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 P4SMA68AHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA68AHE3_A/I?
All P4SMA68AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68AHE3_A/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 P4SMA68AHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA68AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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