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Vishay General Semiconductor - Diodes Division P4SMA68CAHM3_A/I
- Part No.:
- P4SMA68CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68CAHM3_A/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,246
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Product details
Overview
P4SMA68CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 58.1 V standoff voltage (VWM), 64.6–71.4 V breakdown voltage (VBR) at 1 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), commonly used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the P4SMA68CAHM3_A/I datasheet, P4SMA68CAHM3_A/I pinout, P4SMA68CAHM3_A/I application, or P4SMA68CAHM3_A/I equivalent, key selection considerations include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, MSL Level 1 rating, and thermal resistance (RθJA = 120 °C/W) for reliable operation in harsh environments.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the SMA package supports automated placement and meets UL 94 V-0 flammability requirements.
The P4SMA68CAHM3_A/I delivers 400 W peak pulse power handling (derated to 300 W above 91 V) under 10/1000 µs waveform conditions, with fast response time (<1 ns) and low incremental surge resistance - critical for suppressing ESD, lightning-induced surges, and inductive switching transients in automotive and industrial systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 58.1 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 64.6–71.4 V at 1 mA - Confirmed avalanche onset range; ensures predictable clamping initiation across temperature and unit variation. |
| VC (Clamping Voltage) | 92.0 V at IPPM = 4.3 A - Peak voltage seen by protected circuit during 10/1000 µs transient; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Transient energy absorption capacity; enables protection against high-energy surges without failure. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| RθJA | 120 °C/W - Thermal resistance junction-to-ambient; informs PCB pad design and power derating above 25 °C ambient. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; accepts surge current in either polarity relative to cathode. |
| Cathode | Transient current exit (bidirectional) | Second terminal of symmetrical PN junction; completes low-impedance path during avalanche conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power (10/1000 µs) | Supports robust immunity to ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge events in automotive ECUs. |
| AEC-Q101 qualified & halogen-free | Meets automotive supply chain requirements for reliability and environmental compliance (P/NHM3 suffix). |
| Low profile SMA package | 0.208" × 0.157" footprint with 0.100" lead spacing - compatible with high-density PCB layouts and automated SMT assembly. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profiles up to 260 °C peak, simplifying manufacturing flow. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential or single-ended signal lines upstream of IC inputs. Use Value: Limits transient voltage to ≤92.0 V during 4.3 A surges, preventing latch-up or gate oxide damage in protected ASICs. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and contact bounce. IC Role / Device Role / Timing Role: Parallel-connected TVS diode shunting transient energy to ground before it reaches optocoupler or microcontroller input pins. Use Value: Withstands repetitive 400 W pulses without degradation, ensuring long-term reliability in factory automation environments. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY interfaces and RS-485 transceivers on telecom line cards from lightning-induced surges on external ports. IC Role / Device Role / Timing Role: Primary clamping device on data line pairs, coordinated with GDT or MOV secondary protection stages. Use Value: Fast <1 ns response and low clamping ratio (VC/VBR ≈ 1.43) minimize overshoot into sensitive PHY circuitry. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs to clamp flyback voltage spikes during PWM commutation. Use Value: 150 °C max junction temperature and 40 A IFSM rating allow sustained operation under high-current motor stall conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | 600 W PPPM, SMB package (larger footprint), VWM = 64.0 V, VC = 103 V at 5.8 A | Higher power handling but larger size; better suited for board space–tolerant industrial designs | Select when higher surge margin is required and PCB real estate permits SMB footprint. |
| 1.5KE68CA | 1500 W PPPM, DO-201 package (through-hole), VWM = 58.1 V, VC = 118 V at 12.7 A | Through-hole mounting only; higher clamping voltage reduces protection level for sensitive ICs | Choose for legacy through-hole assemblies or where extreme surge energy (>1 kV/40 Ω) must be absorbed. |
Compared with SMBJ64CA and 1.5KE68CA, the P4SMA68CAHM3_A/I offers optimal balance of compact SMA packaging, AEC-Q101 qualification, and precise 92.0 V clamping - making it preferred for space-constrained automotive and industrial SMT designs requiring certified reliability.
Availability
P4SMA68CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O protection, and telecom line card surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA68CAHM3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA Series targets cost-effective, high-volume transient suppression in automotive, industrial, and consumer electronics - engineered for robustness, manufacturability, and compliance with AEC-Q101 and RoHS standards.
FAQ
What is the clamping voltage of P4SMA68CAHM3_A/I at its rated peak pulse current?
The P4SMA68CAHM3_A/I has a maximum clamping voltage (VC) of 92.0 V at its specified peak pulse current (IPPM) of 4.3 A under a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA68CAHM3_A/I maintains this clamping performance consistently across its qualified operating temperature range.
Is P4SMA68CAHM3_A/I suitable for automotive applications?
Yes, the P4SMA68CAHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability validation. It is specifically intended for use in automotive subsystems such as body control modules, sensor interfaces, and infotainment power rails where transient immunity and long-term stability under thermal cycling are mandatory. The P4SMA68CAHM3_A/I meets all stress tests defined in AEC-Q101 including HTGB, HTRB, and ESD.
What does the "CA" suffix mean in P4SMA68CAHM3_A/I?
The "CA" suffix in P4SMA68CAHM3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical electrical characteristics forward and reverse. This eliminates the need for polarity-aware placement and makes the P4SMA68CAHM3_A/I ideal for protecting AC-coupled signals, differential buses (e.g., RS-485), or floating power domains where voltage reversal can occur.
What is the standoff voltage (VWM) of P4SMA68CAHM3_A/I, and why is it important?
The standoff voltage (VWM) of P4SMA68CAHM3_A/I is 58.1 V - the maximum continuous DC or RMS voltage the device can withstand without entering avalanche conduction. This parameter ensures the P4SMA68CAHM3_A/I remains non-conductive during normal operation while allowing sufficient margin below its 64.6–71.4 V breakdown range. Selecting VWM ≥10–20% above system operating voltage prevents leakage-induced power loss or false triggering.
How does the SMA (DO-214AC) package of P4SMA68CAHM3_A/I compare to SMB or SMC packages?
The SMA (DO-214AC) package of P4SMA68CAHM3_A/I measures 4.93 mm × 3.99 mm with 2.54 mm lead spacing - smaller than SMB (DO-214AA) and significantly smaller than SMC (DO-214AB). This enables higher board density and compatibility with fine-pitch SMT processes. While SMBJ/SMLJ variants offer higher power ratings, the P4SMA68CAHM3_A/I's SMA footprint delivers optimal trade-off between surge capability (400 W), size, and cost for mid-tier protection needs in space-constrained designs.
P4SMA68CAHM3_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:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA68CAHM3_A/I FAQ
1.How can I place an order for P4SMA68CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68CAHM3_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 P4SMA68CAHM3_A/I reliable?
The price and inventory of P4SMA68CAHM3_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 P4SMA68CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA68CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68CAHM3_A/I?
P4SMA68CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68CAHM3_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 P4SMA68CAHM3_A/I?
For technical support, including P4SMA68CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68CAHM3_A/I requirements.
6.How does Aetrix verify that P4SMA68CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA68CAHM3_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 P4SMA68CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA68CAHM3_A/I?
All P4SMA68CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68CAHM3_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 P4SMA68CAHM3_A/I part is unused and in its original packaging.
Return procedure for P4SMA68CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA68CAHM3_A/I Tags
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