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Vishay General Semiconductor - Diodes Division P4SMA68AHE3/61
- Part No.:
- P4SMA68AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68AHE3/61.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,358
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Product details
Overview
P4SMA68AHE3/61 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, and 400 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4SMA68AHE3/61 datasheet, P4SMA68AHE3/61 pinout, P4SMA68AHE3/61 application, or P4SMA68AHE3/61 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), polarity marking convention, and real-world design implications for transient immunity in 12 V–24 V systems.
Technical Context
This unidirectional TVS operates by avalanche breakdown above its VWM of 58.1 V, clamping transients to ≤92.0 V within nanoseconds. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and low incremental surge resistance, critical for protecting downstream MOSFETs and microcontrollers.
Rated for 40 A non-repetitive forward surge (8.3 ms half-sine), it supports high-energy ESD and load-dump events. The device meets MSL Level 1 per J-STD-020, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and is qualified to AEC-Q101 for automotive underhood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 58.1 V - Maximum continuous reverse voltage before conduction begins; sets operating margin below clamping threshold |
| VBR (Breakdown, min) | 64.6 V - Minimum voltage at which avalanche conduction initiates reliably at 1 mA test current |
| VC (Clamping, max) | 92.0 V - Maximum voltage seen by protected circuit during 4.3 A 10/1000 µs transient; defines worst-case stress level |
| PPPM | 400 W - Peak pulse power handling with 10/1000 µs waveform; determines survivability against ISO 7637-2 Pulse 1/2a/5a |
| IPPM | 4.3 A - Peak pulse current corresponding to VC; used to size PCB trace width and verify system-level energy absorption |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments without derating |
| RθJA | 120 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs thermal layout requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with molded UL 94 V-0 compound. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts avalanche current to ground during overvoltage event |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood use per stress test requirements including temperature cycling, HTRB, and ESD |
| 400 W peak pulse power | Withstands ISO 7637-2 Load Dump (Pulse 5a) up to 120 V/100 ms in 12 V systems when properly mounted |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and low leakage (<1 µA) across -65 °C to +150 °C operating range |
| MSL Level 1 rating | Compatible with standard SMT reflow profiles up to 260 °C peak, eliminating moisture sensitivity concerns |
| Matte tin plating | Enables reliable solder joint formation per J-STD-002 and passes JESD 22-B102 whisker testing (Class 2) |
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 inductive switching transients in engine control modules. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between signal line and chassis ground, responding in <1 ns to limit voltage excursions. Use Value: Maintains signal integrity by limiting transients to ≤92.0 V, preventing latch-up or damage to 5 V/3.3 V interface ICs rated for 16 V absolute maximum. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to 24 V DC field wiring with long cable runs and relay coil back-EMF. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals, absorbing repetitive 400 W surges without degradation. Use Value: Enables >100,000 surge cycles per IEC 61000-4-5 Level 3 compliance due to low incremental resistance and stable VC. |
| DC Power Rail Protection | Consumer Device USB Port Protection |
Use Scenario: Guarding 12 V/24 V power distribution networks in telematics units and ADAS ECUs against battery reverse connection and alternator load dump. IC Role / Device Role / Timing Role: Primary front-end TVS on main power input, coordinated with fuse and secondary filtering. Use Value: Clamps 120 V/100 ms load dump pulses to <92 V, allowing downstream LDOs and PMICs to remain functional without shutdown. |
Use Scenario: Secondary-level transient suppression on VBUS line of USB 2.0 ports in smart home hubs and set-top boxes subjected to ESD and hot-plug surges. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor placed upstream of USB switch ICs and ESD diodes. Use Value: Limits VBUS overshoot to ≤92.0 V during ±8 kV contact ESD (IEC 61000-4-2), preventing data corruption and port lockup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | Higher VWM (64 V), same VC (103 V), 600 W PPPM, SMB package (larger footprint) | Requires larger PCB area; better suited for higher-energy 24 V systems where 600 W margin is needed | Select when board space allows and higher pulse power headroom is required beyond 400 W |
| 1.5SMC68A | Same VWM/VBR/VC, 1500 W PPPM, SMC package (DO-214AB), higher IFSM (100 A) | Designed for primary-level protection; not AEC-Q101 qualified; requires more layout area | Choose for non-automotive, high-energy front-end protection where AEC-Q101 is not mandated |
Compared with SMBJ64A and 1.5SMC68A, P4SMA68AHE3/61 offers optimal balance of AEC-Q101 compliance, compact SMA footprint, and sufficient 400 W pulse rating for secondary-level protection in space-constrained automotive modules - without requiring PCB redesign or sacrificing qualification status.
Availability
P4SMA68AHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and DC power rail protection requiring stable component supply, AEC-Q101 validation, and consistent surge performance across production batches.
Supply support for P4SMA68AHE3/61 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, automotive qualification, and high-volume manufacturability.
The P4SMA Series targets cost-sensitive, high-reliability transient suppression in automotive, industrial, and consumer applications - delivering standardized TVS performance in compact surface-mount packages with AEC-Q101 options.
FAQ
What is the clamping voltage of P4SMA68AHE3/61 at its rated peak pulse current?
The P4SMA68AHE3/61 has a maximum clamping voltage (VC) of 92.0 V at its rated peak pulse current (IPPM) of 4.3 A using a 10/1000 µs waveform. This value is measured under standard test conditions per JEDEC standards and defines the upper voltage limit imposed on protected circuits during transient events. The P4SMA68AHE3/61 maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is P4SMA68AHE3/61 qualified for automotive applications?
Yes, P4SMA68AHE3/61 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation revision 09-Jan-2024. It undergoes stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements. The P4SMA68AHE3/61 is intended for underhood and body-control module applications where reliability under thermal and electrical stress is mandatory.
What does the "HE3" suffix indicate in P4SMA68AHE3/61?
The "HE3" suffix in P4SMA68AHE3/61 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting JESD 22-B102 Class 2 whisker resistance. It distinguishes this variant from commercial-grade "E3" parts and halogen-free "HM3" versions. The P4SMA68AHE3/61 is specifically built for automotive-grade traceability and long-term reliability in harsh environments.
How does the thermal resistance of P4SMA68AHE3/61 affect PCB layout?
The P4SMA68AHE3/61 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. To avoid exceeding the +150 °C maximum junction temperature during repetitive surges, designers must ensure adequate copper area and minimize trace length. The P4SMA68AHE3/61 benefits from thermal vias under pads if ambient temperatures exceed 85 °C.
Can P4SMA68AHE3/61 be used in bidirectional configurations?
No, P4SMA68AHE3/61 is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA") and cathode band marking. It conducts only when the cathode is positive relative to the anode. For bidirectional protection, Vishay offers the P4SMA68CA series - the P4SMA68AHE3/61 must not be substituted in AC-coupled or symmetrical transient scenarios without circuit redesign.
P4SMA68AHE3/61 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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA68AHE3/61 FAQ
1.How can I place an order for P4SMA68AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68AHE3/61 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 P4SMA68AHE3/61 reliable?
The price and inventory of P4SMA68AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA68AHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA68AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68AHE3/61?
P4SMA68AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68AHE3/61 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 P4SMA68AHE3/61?
For technical support, including P4SMA68AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68AHE3/61 requirements.
6.How does Aetrix verify that P4SMA68AHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA68AHE3/61 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 P4SMA68AHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA68AHE3/61?
All P4SMA68AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68AHE3/61, 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 P4SMA68AHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA68AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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