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Vishay General Semiconductor - Diodes Division P4SMA68AHE3/5A
- Part No.:
- P4SMA68AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68AHE3/5A.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,449
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Product details
Overview
P4SMA68AHE3/5A 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), 58.1 V standoff voltage (VWM), and 92.0 V clamping voltage (VC) at 4.3 A peak pulse current (IPPM). It delivers 400 W peak pulse power (10/1000 µs waveform) and is AEC-Q101 qualified for automotive applications such as sensor line protection and ECU power rail surge suppression.
For engineers reviewing the P4SMA68AHE3/5A datasheet, P4SMA68AHE3/5A pinout, P4SMA68AHE3/5A application, or P4SMA68AHE3/5A equivalent, this device serves as a robust, low-profile TVS solution for high-reliability transient suppression in automotive, industrial, and telecom systems where precise clamping, fast response (<1 ns), and MSL Level 1 solderability are required.
Technical Context
The P4SMA68AHE3/5A operates as a unidirectional avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients and stable clamping under repetitive 10/1000 µs surges. Its thermal resistance (RθJA = 120 °C/W) and junction temperature range (−65 °C to +150 °C) support operation on standard PCB copper pads without heatsinking.
Designed for automated SMT placement, it features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets UL 94 V-0 flammability rating. The cathode band denotes polarity, and its AEC-Q101 qualification confirms suitability for automotive-grade reliability testing including temperature cycling and humidity bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines reliable avalanche initiation threshold for overvoltage protection |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 92.0 V at 4.3 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak transient power handling capability on standard 0.2" × 0.2" copper pads |
| 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 under-hood automotive environments and industrial enclosures |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTOL, TC, and HAST |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line (e.g., supply rail); conducts during positive transients to ground |
| Anode (unbanded end) | Reference terminal | Typically tied to system ground; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V/24 V rails |
| AEC-Q101 qualification | Validates long-term reliability in automotive ECUs, ADAS sensors, and body control modules |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA at VWM) across temperature and lifetime |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without preconditioning, compatible with standard SMT assembly lines |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for enclosed automotive and industrial housings |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle cabins. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach sensitive input stages. Use Value: Limits clamped voltage to 92.0 V while absorbing 400 W surges, preserving signal integrity and preventing latch-up in 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding 24 V DC power inputs of PLC I/O modules and motor drives against ISO 7637-2 pulses and relay coil flyback. IC Role / Device Role / Timing Role: Primary front-end TVS on main power rail, positioned upstream of DC-DC converters and LDOs. Use Value: Withstands 4.3 A peak surge current and maintains <1 µA leakage at 58.1 V, minimizing standby power loss and ensuring stable regulation. |
| Telecom Line Interface | Consumer Device USB/Power Port |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges and ESD events on RJ45 ports. IC Role / Device Role / Timing Role: Secondary-level TVS on isolated data lines, used alongside common-mode chokes and primary GDTs. Use Value: Fast <1 ns response and 92.0 V clamping prevent damage to 100BASE-TX transformers and magnetics rated for ≤100 V isolation. |
Use Scenario: Adding transient immunity to USB-C power delivery inputs and auxiliary charging ports in smart home hubs and portable devices. IC Role / Device Role / Timing Role: Standalone unidirectional suppressor between VBUS and ground, sized for 5–20 V operation. Use Value: 58.1 V VWM allows safe operation across USB PD 3.0 profiles (up to 20 V), while 400 W rating covers hot-plug and cable discharge events. |
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 VBR/VWM/VC, but lower PPPM = 400 W only up to 68 V; no AEC-Q101 qualification | Not approved for automotive use; suitable for commercial/industrial designs without qualification mandates | Select when AEC-Q101 is not required and cost optimization is prioritized over automotive compliance |
| 1.5SMC68A (ON Semiconductor) | Identical electrical specs (VBR: 64.6–71.4 V, VC: 92.0 V), but SMC (DO-214AB) package - 2.5 mm wider, higher RθJA (100 °C/W) | Requires larger PCB footprint; less suitable for dense automotive layouts where SMA's compact size is critical | Choose only if existing SMC footprint is fixed and thermal margin permits higher junction rise |
Compared with SMAJ68A-E3/5A, P4SMA68AHE3/5A adds AEC-Q101 qualification and tighter process control for automotive deployment; versus 1.5SMC68A, it offers smaller SMA footprint and better board-space efficiency without sacrificing clamping performance.
Availability
P4SMA68AHE3/5A is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom infrastructure projects requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA68AHE3/5A 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P4SMA68AHE3/5A belongs to Vishay's TRANSZORB® TVS family, engineered for high-energy transient suppression in harsh environments-particularly targeting automotive, industrial, and communications systems demanding AEC-Q101 validation and consistent clamping behavior.
FAQ
What is the clamping voltage of P4SMA68AHE3/5A at its rated peak pulse current?
The P4SMA68AHE3/5A 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" copper pads and represents the upper limit of voltage seen by downstream circuitry during a surge event. The P4SMA68AHE3/5A maintains this clamping performance across its specified operating temperature range.
Is P4SMA68AHE3/5A suitable for automotive applications?
Yes, P4SMA68AHE3/5A is AEC-Q101 qualified and specifically designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101-qualified construction. It undergoes rigorous stress testing including high-temperature operating life, temperature cycling, and humidity bias, making it appropriate for engine control units, ADAS sensors, and body electronics where reliability under thermal and mechanical stress is mandatory. The P4SMA68AHE3/5A meets these requirements without derating.
What is the standoff voltage (VWM) of P4SMA68AHE3/5A, and why does it matter?
The standoff voltage (VWM) of P4SMA68AHE3/5A is 58.1 V - the maximum continuous reverse voltage the device can block without exceeding 1.0 µA leakage current. This parameter ensures the P4SMA68AHE3/5A remains non-conductive during normal operation of a 48 V or 24 V system, preventing power loss and false triggering. Selecting a VWM ≥10–15% above nominal rail voltage avoids nuisance conduction while retaining sufficient margin for transients.
Does P4SMA68AHE3/5A have a defined polarity, and how is it marked?
Yes, P4SMA68AHE3/5A is a unidirectional TVS diode with explicit polarity: the cathode is identified by a visible band on the SMA (DO-214AC) package body. During circuit layout, the banded end must be connected toward the protected line (e.g., VCC or signal), while the unbanded (anode) end connects to ground. Reversing polarity renders the P4SMA68AHE3/5A ineffective for positive transients and may cause failure under surge conditions.
What packaging format does P4SMA68AHE3/5A ship in, and what is the reel quantity?
P4SMA68AHE3/5A ships in 13-inch diameter plastic tape and reel format, with a standard base quantity of 7500 pieces per reel (ordering code "/5A"). This packaging supports high-speed automated pick-and-place assembly and complies with EIA-481 standards. The tape pitch is 8 mm, and the device orientation is consistent across the reel to ensure reliable feeding. Aetrix Electronics stocks P4SMA68AHE3/5A in full reels and offers cut-tape options for prototyping and low-volume builds.
P4SMA68AHE3/5A 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:
- 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)
P4SMA68AHE3/5A FAQ
1.How can I place an order for P4SMA68AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68AHE3/5A 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 P4SMA68AHE3/5A reliable?
The price and inventory of P4SMA68AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA68AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA68AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68AHE3/5A?
P4SMA68AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68AHE3/5A 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 P4SMA68AHE3/5A?
For technical support, including P4SMA68AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68AHE3/5A requirements.
6.How does Aetrix verify that P4SMA68AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA68AHE3/5A 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 P4SMA68AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA68AHE3/5A?
All P4SMA68AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68AHE3/5A, 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 P4SMA68AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA68AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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