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Vishay General Semiconductor - Diodes Division P4SMA82CAHM3_A/I
- Part No.:
- P4SMA82CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82CAHM3_A/I.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,193
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Product details
Overview
P4SMA82CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features a 70.1 V standoff voltage (VWM), 77.9–86.1 V breakdown voltage (VBR) at 1 mA, 113 V maximum clamping voltage (VC) at 3.5 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P4SMA82CAHM3_A/I datasheet, P4SMA82CAHM3_A/I pinout, P4SMA82CAHM3_A/I application, or P4SMA82CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both directions, enabling robust transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the SMA package supports high thermal dissipation via 0.2" × 0.2" copper pads per terminal.
The P4SMA82CAHM3_A/I is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It delivers 400 W peak pulse power below 91 V (derated to 300 W above 91 V), with 0.105 %/°C temperature coefficient of VBR, ensuring predictable clamping across operating temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 70.1 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 77.9–86.1 V at 1 mA - Verified avalanche onset range; ensures reliable triggering during transients |
| VC (Clamping) | 113 V at 3.5 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream components |
| PPPM | 400 W - Surge energy handling capacity under standardized 10/1000 µs waveform; sufficient for IEC 61000-4-5 Level 3/4 events |
| IPPM | 3.5 A - Corresponding peak pulse current at VC; enables calculation of effective clamping impedance (~32.3 Ω) |
| TJ max. | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial ambient environments |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with JEDEC MS-013 |
Pinout & Package
Package: SMA (DO-214AC), bidirectional device with no polarity marking; symmetric two-terminal construction suitable for AC-coupled or floating signal line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetric) | Transient conduction path | Both terminals function identically; bidirectional avalanche conduction occurs regardless of voltage polarity applied across the device |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and infotainment systems |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-609A Class 1; eliminates brominated flame retardants for safer end-of-life processing |
| 400 W peak pulse power | Handles repetitive surges up to 0.01% duty cycle without degradation; supports sustained protection in noisy industrial bus environments |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage exposure during clamping - critical for safeguarding 3.3 V or 5 V logic interfaces and precision analog sensors |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C); eliminates baking requirements and simplifies manufacturing logistics |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and outputs against load dump and ISO 7637-2 pulses in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt surge energy before it reaches transceiver IC. Use Value: Prevents latch-up or permanent damage to transceivers during 12 V system load dump events (up to 120 V, 400 ms), leveraging 113 V clamping and AEC-Q101 qualification. |
Use Scenario: Safeguarding differential CAN_H/CAN_L lines in factory automation PLCs exposed to motor switching noise and EFT bursts. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) suppressing ±25 kV ESD and 1 kV EFT transients per IEC 61000-4-2/4-4. Use Value: Maintains CAN signal integrity by limiting line-to-ground overvoltage to ≤113 V while preserving <1 pF junction capacitance - avoids data corruption at 1 Mbps baud rate. |
| Consumer Power Adapter Input Stage | Telecom DSL Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters after rectification, guarding against transformer flyback spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC output rails to clamp transient excursions caused by regulator instability or capacitor failure. Use Value: Limits output overshoot to 113 V during 400 W surge events, protecting downstream USB-PD controllers and load switches rated for ≤20 V input. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers and receivers against lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Bidirectional TVS placed between tip/ring and ground to absorb common-mode surges per ITU-T K.20/K.21 recommendations. Use Value: Withstands 10/1000 µs surges up to 400 W while maintaining low leakage (<1 µA at 70.1 V), preventing false triggering in low-current line monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | Higher VWM (72.2 V), same VC (115 V), SMB package (larger footprint, higher thermal mass) | Better suited for higher-energy surges due to 600 W PPPM; requires PCB layout change for larger pad area | Select when board space allows and surge energy exceeds 400 W; not drop-in due to different package and thermal profile |
| 1.5SMC82CA | Same VWM/VBR/VC, but SMC package (DO-214AB) with 1.5 kW PPPM rating and higher IPPM (12.3 A) | Designed for primary-side AC line protection where higher surge immunity is mandatory (e.g., UL 1449 Type 2 SPDs) | Choose for mains-input protection requiring >1 kW surge handling; incompatible with SMA footprints and automated placement reels |
Compared with P4SMA82CAHM3_A/I, SMBJ85CA offers greater surge margin but demands layout revision, while 1.5SMC82CA provides significantly higher power handling at the cost of size and assembly compatibility - making P4SMA82CAHM3_A/I optimal for space-constrained, AEC-Q101–required secondary-side protection.
Availability
P4SMA82CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer power adapter outputs, and telecom DSL line protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA82CAHM3_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 optimization.
The P4SMA series is engineered for surface-mount transient suppression in high-volume automotive, industrial, and communications equipment - delivering consistent clamping performance, AEC-Q101 qualification, and halogen-free compliance in compact SMA packages.
FAQ
What is the clamping voltage of P4SMA82CAHM3_A/I at its rated peak pulse current?
The P4SMA82CAHM3_A/I has a maximum clamping voltage (VC) of 113 V at 3.5 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The clamping performance remains stable across temperature due to its 0.105 %/°C VBR temperature coefficient, and the device maintains this specification throughout its qualified AEC-Q101 lifetime.
Is P4SMA82CAHM3_A/I suitable for automotive applications?
Yes, P4SMA82CAHM3_A/I is AEC-Q101 qualified and specifically designated for automotive use with the "HM3" suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD verification per JESD22-A114. The device is deployed in engine control units, body electronics, and ADAS sensor modules where bidirectional transient suppression and long-term reliability are mandatory.
What does the "CA" suffix mean in P4SMA82CAHM3_A/I?
The "CA" suffix in P4SMA82CAHM3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical electrical characteristics (VWM, VBR, VC) regardless of voltage direction. Unlike unidirectional variants (e.g., P4SMA82AHM3_A/I), the CA version has no cathode marking and is used where AC signals, floating grounds, or polarity-agnostic protection are required - such as CAN bus lines or audio differential pairs.
How does the SMA package of P4SMA82CAHM3_A/I affect thermal performance?
The SMA (DO-214AC) package of P4SMA82CAHM3_A/I provides a thermal resistance of 120 °C/W junction-to-ambient (RθJA) when mounted on minimum recommended 0.2" × 0.2" copper pads. This enables reliable operation at full 400 W surge rating only with proper PCB copper area; derating applies above 25 °C ambient. Its compact size (5.28 mm × 4.50 mm) supports high-density layouts while maintaining sufficient thermal mass for short-duration transients - verified per JEDEC J-STD-020 MSL Level 1 reflow compatibility.
What is the maximum reverse leakage current for P4SMA82CAHM3_A/I at its standoff voltage?
The maximum reverse leakage current (ID) for P4SMA82CAHM3_A/I is 1.0 µA at its 70.1 V standoff voltage (VWM), measured at 25 °C. This low leakage ensures minimal power loss and signal distortion in always-on or battery-powered applications such as automotive LIN bus nodes or IoT sensor interfaces. Leakage remains within specification across the full -65 °C to +150 °C operating junction temperature range, supporting stable performance in extreme environments.
P4SMA82CAHM3_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):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 3.5A
- 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)
P4SMA82CAHM3_A/I FAQ
1.How can I place an order for P4SMA82CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82CAHM3_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 P4SMA82CAHM3_A/I reliable?
The price and inventory of P4SMA82CAHM3_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 P4SMA82CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA82CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82CAHM3_A/I?
P4SMA82CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82CAHM3_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 P4SMA82CAHM3_A/I?
For technical support, including P4SMA82CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82CAHM3_A/I requirements.
6.How does Aetrix verify that P4SMA82CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA82CAHM3_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 P4SMA82CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA82CAHM3_A/I?
All P4SMA82CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82CAHM3_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 P4SMA82CAHM3_A/I part is unused and in its original packaging.
Return procedure for P4SMA82CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA82CAHM3_A/I Tags
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