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Vishay General Semiconductor - Diodes Division P4SMA82CAHM3/H
- Part No.:
- P4SMA82CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82CAHM3/H.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,730
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Product details
Overview
P4SMA82CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 82 V breakdown voltage (VBR = 77.9–86.1 V at IT = 1 mA), 70.1 V standoff voltage (VWM), 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 in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4SMA82CAHM3/H datasheet, P4SMA82CAHM3/H pinout, P4SMA82CAHM3/H application, or P4SMA82CAHM3/H equivalent, this device is selected for bidirectional overvoltage protection where AEC-Q101 qualification, low-profile SMA (DO-214AC) packaging, and stable clamping under repetitive surge conditions are required.
Technical Context
The P4SMA82CAHM3/H operates as a symmetrical avalanche diode, conducting equally in both directions above its breakdown threshold to clamp transient energy into ground or rail. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM), while thermal resistance RθJA = 120 °C/W supports operation up to TJ = 150 °C.
Designed for unclamped inductive switching events and lightning-induced surges, it delivers fast response time (<1 ns), low incremental surge resistance, and meets J-STD-020 MSL Level 1 (260 °C reflow peak). The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification per revision B for high-reliability automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 77.9–86.1 V at 1 mA test current - defines precise clamping onset threshold for bidirectional transients |
| Standoff Voltage VWM | 70.1 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| Clamping Voltage VC | 113 V at 3.5 A IPPM - limits downstream IC stress during 10/1000 µs surge events |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - sustains single high-energy transients without failure |
| Operating Temperature | -65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| Package | SMA (DO-214AC) - 0.208" × 0.157" surface-mount footprint compatible with automated assembly |
| AEC-Q101 Qualified | Yes (HM3 suffix, revision B) - validated for automotive electronics per stress-test requirements |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to protected line; conducts during negative transients relative to cathode |
| Cathode | Transient return path (bidirectional) | Connects to protected line; conducts during positive transients relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 12 V/24 V systems |
| AEC-Q101 qualified (HM3) | Validated for automotive Grade 2 temperature cycling, HTRB, and ESD robustness per JEDEC standards |
| Low profile SMA package | 0.078" height enables placement near connectors or sensors in space-constrained ECUs |
| Glass passivated junction | Ensures long-term VBR stability and <1 µA leakage at VWM after 1000 hrs HTOL |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤113 V during 400 W surges, preserving signal integrity and preventing MCU input latch-up. |
Use Scenario: Shielding 24 V digital input modules from inductive kickback when switching solenoids or relays. IC Role / Device Role / Timing Role: Primary surge suppression device across input terminals before optocoupler or Schmitt trigger. Use Value: Absorbs 10/1000 µs transients up to 3.5 A without degradation, enabling >100,000 surge cycles in factory automation. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Safeguarding RS-485 transceivers and Ethernet PHYs against ESD and lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line bidirectional transient suppressor on differential pair inputs. Use Value: Clamps common-mode surges within 1 ns while maintaining <10 pF junction capacitance at 0 V bias for signal fidelity. |
Use Scenario: Securing microcontroller GPIOs and display backlight drivers against user-interface ESD and motor commutation noise. IC Role / Device Role / Timing Role: Localized TVS on board-level power rails and button traces. Use Value: Provides certified AEC-Q101 reliability in white goods control boards exposed to humid, vibration-prone environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | Higher VWM = 72.2 V, lower VC = 119 V at 3.3 A, same SMA package but 600 W PPPM rating | Preferred for higher-energy 10/1000 µs surges where tighter clamping margin is acceptable | Select SMBJ85CA when system surge testing requires >400 W margin or when VWM must exceed 71 V |
| 1.5KE82CA | Through-hole DO-201 package, same VBR/VC, 1500 W PPPM, no AEC-Q101 qualification | Suitable for prototyping or non-automotive industrial PCBs where manual assembly or higher pulse handling is needed | Choose 1.5KE82CA only for non-automotive designs requiring legacy through-hole mounting or >1 kW surge capability |
Compared with SMBJ85CA and 1.5KE82CA, the P4SMA82CAHM3/H uniquely combines AEC-Q101 qualification, halogen-free compliance, and optimized 400 W/113 V clamping in a low-profile surface-mount package - making it the preferred choice for production automotive and high-reliability industrial modules.
Availability
P4SMA82CAHM3/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and telecom line interface applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA82CAHM3/H 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 P4SMA Series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for robust, standardized transient suppression in automotive, industrial, and communications equipment where AEC-Q101 compliance and repeatable clamping behavior are mandatory.
FAQ
What is the breakdown voltage tolerance of the P4SMA82CAHM3/H?
The P4SMA82CAHM3/H has a breakdown voltage (VBR) range of 77.9 V to 86.1 V at 1 mA test current, corresponding to a ±5% tolerance around the nominal 82 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable system-level surge margin calculations in designs using the P4SMA82CAHM3/H.
Is the P4SMA82CAHM3/H suitable for automotive applications?
Yes, the P4SMA82CAHM3/H is AEC-Q101 qualified (HM3 suffix, revision B), confirming compliance with automotive stress tests including temperature cycling, high-temperature reverse bias, and ESD. Its halogen-free, RoHS-compliant construction and 150 °C max junction temperature make it suitable for engine control units, body electronics, and ADAS sensor interfaces using the P4SMA82CAHM3/H.
What does the "CA" suffix indicate in P4SMA82CAHM3/H?
The "CA" suffix in P4SMA82CAHM3/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical VBR, VWM, and VC characteristics for positive and negative transients. This eliminates polarity marking requirements and simplifies layout for AC-coupled or floating signal paths protected by the P4SMA82CAHM3/H.
How does the P4SMA82CAHM3/H compare to unidirectional variants like P4SMA82AHM3/H?
The P4SMA82CAHM3/H differs from unidirectional P4SMA82AHM3/H in having no cathode band marking and symmetric electrical characteristics in both directions. While both share the same VBR, VC, and PPPM ratings, only the CA version supports protection of bidirectional data lines (e.g., RS-485, CAN) without external polarity management - a key functional distinction when selecting the P4SMA82CAHM3/H.
What is the maximum clamping voltage of the P4SMA82CAHM3/H under surge conditions?
The P4SMA82CAHM3/H has a maximum clamping voltage (VC) of 113 V at 3.5 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value represents the upper voltage limit imposed on protected circuitry during worst-case surge events and is critical for ensuring downstream components like MCUs or transceivers remain within their absolute maximum ratings when the P4SMA82CAHM3/H is deployed.
P4SMA82CAHM3/H 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:
- -
- 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/H FAQ
1.How can I place an order for P4SMA82CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82CAHM3/H 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/H reliable?
The price and inventory of P4SMA82CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82CAHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA82CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82CAHM3/H?
P4SMA82CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82CAHM3/H 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/H?
For technical support, including P4SMA82CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82CAHM3/H requirements.
6.How does Aetrix verify that P4SMA82CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA82CAHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of P4SMA82CAHM3/H?
All P4SMA82CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82CAHM3/H, 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/H part is unused and in its original packaging.
Return procedure for P4SMA82CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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