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Vishay General Semiconductor - Diodes Division P4SMA82CA-E3/61
- Part No.:
- P4SMA82CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82CA-E3/61.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA82CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor (TVS) designed for clamping inductive and lightning-induced transients across signal and 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, sensor interfaces, and telecom line drivers.
For engineers reviewing the P4SMA82CA-E3/61 datasheet, P4SMA82CA-E3/61 pinout, P4SMA82CA-E3/61 application, or P4SMA82CA-E3/61 equivalent, this device delivers verified bidirectional surge suppression in SMA (DO-214AC) package with AEC-Q101 qualification option, RoHS-compliant matte tin terminations, and MSL Level 1 moisture sensitivity - critical for automotive sensor modules and industrial I/O protection.
Technical Context
The P4SMA82CA-E3/61 operates as a symmetrical avalanche diode, providing identical clamping behavior in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling consistent response to fast-rising transients (<1 ns typical).
Thermal performance is defined by RθJA = 120 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) and RθJL = 30 °C/W (junction-to-lead), supporting reliable operation up to TJ = 150 °C. The device meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 70.1 V - Maximum continuous reverse voltage before leakage exceeds 1 µA; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 77.9–86.1 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 113 V at 3.5 A (10/1000 µs) - Peak voltage seen by protected circuit during rated surge; determines downstream component stress |
| PPPM (Peak Pulse Power) | 400 W - Sustained energy absorption capability under standard 10/1000 µs waveform; derates to 300 W above 91 V |
| IPPM (Peak Pulse Current) | 3.5 A - Maximum non-repetitive surge current supported without degradation; validated per Fig. 3 waveform |
| TJmax | 150 °C - Maximum junction temperature; sets thermal design limits for PCB pad layout and ambient conditions |
| Package | SMA (DO-214AC) - Surface-mount outline with 5.0 mm × 5.0 mm copper pad requirement; supports automated placement and reflow |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 flammability rating, and no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Common terminal for symmetrical clamping; connects to reference plane or signal return |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode; no functional distinction in CA devices - forms dual-junction structure |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VC, and IPPM in both directions - eliminates polarity concerns in AC-coupled or floating signal lines |
| Glass-passivated junction | Stable VBR tolerance (±5%) and low leakage (<1 µA at VWM) - ensures long-term reliability under thermal cycling |
| MSL Level 1 rating | Reflow-compatible up to 260 °C peak - enables single-pass lead-free assembly without baking or special handling |
| AEC-Q101 qualification option | Available as P4SMA82CAHE3_A - validated for automotive-grade temperature cycling, humidity, and mechanical shock |
| UL 497B recognition (QVGQ2) | Approved for telecom and industrial surge protector classification - simplifies end-equipment safety certification |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Transceiver Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply-to-ground to clamp ±100 V transients within 1 ns. Use Value: Maintains signal integrity by limiting clamped voltage to 113 V while absorbing 400 W surges - preventing damage to 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding RS-485 transceivers (e.g., MAX1487, SN65HVD72) against ESD and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Placed between A/B lines and ground to suppress common-mode transients up to 1 kV (IEC 61000-4-5 Level 3). Use Value: Enables robust communication in factory automation by clamping with <1 ns response and sustaining 3.5 A peak current without degradation. |
| Telecom Line Card Surge Suppression | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding DSL/VDSL line drivers and POTS interface ICs from induced surges on outside plant wiring. IC Role / Device Role / Timing Role: Bidirectional TVS connected line-to-line and line-to-ground to meet GR-1089-CORE and ITU-T K.20/K.44 requirements. Use Value: Provides UL 497B-recognized protection with 70.1 V VWM - preserves DC bias headroom while meeting telecom surge immunity standards. |
Use Scenario: Guarding microcontroller GPIOs and gate drivers in washing machine/dishwasher motor control boards against inductive kickback. IC Role / Device Role / Timing Role: Mounted across relay coils or half-bridge FETs to absorb 400 W energy from 24 V/12 V switching transients. Use Value: Prevents MCU reset or latch-up by limiting transient voltage to 113 V - compatible with commercial-grade 150 °C junction rating. |
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), larger SMB package (DO-214AA) | Requires larger PCB footprint; better thermal dissipation (RθJA = 85 °C/W) | Select when higher power derating margin or improved thermal performance is needed on high-density boards |
| 1.5KE82CA | Same VWM/VBR specs but axial-leaded DO-201AE package; 1500 W PPPM | Through-hole mounting only; unsuitable for automated SMT lines | Choose for prototyping, legacy repair, or high-energy surge scenarios where board space allows axial components |
Compared with P4SMA82CA-E3/61, SMBJ85CA offers superior thermal performance in a slightly larger SMT package, while 1.5KE82CA provides higher surge capacity but requires manual assembly - making P4SMA82CA-E3/61 optimal for cost-sensitive, high-volume SMT designs needing balanced clamping precision and manufacturability.
Availability
P4SMA82CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, telecom line cards, and consumer appliance motor controls requiring stable component supply with RoHS compliance and traceable sourcing.
Supply support for P4SMA82CA-E3/61 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, precision, and automotive-grade validation.
The P4SMA Series targets surface-mount transient suppression in space-constrained, high-reliability applications - engineered for rapid response, stable clamping, and compatibility with modern SMT manufacturing flows.
FAQ
What is the clamping voltage of P4SMA82CA-E3/61 at its rated peak pulse current?
The P4SMA82CA-E3/61 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 per Figure 1 in the Vishay datasheet 88367 and represents the upper limit of voltage imposed on protected circuitry during a surge event. The P4SMA82CA-E3/61 maintains this clamping performance bidirectionally, ensuring consistent protection regardless of transient polarity.
Is P4SMA82CA-E3/61 suitable for automotive applications?
Yes - the base P4SMA82CA-E3/61 is RoHS-compliant and qualified to AEC-Q101 when ordered with the HE3 suffix (e.g., P4SMA82CAHE3_A). The P4SMA82CA-E3/61 itself carries the E3 commercial-grade suffix, but its construction - including glass-passivated junction, MSL Level 1 rating, and 150 °C TJmax - supports automotive under-hood and cabin environments when thermally managed per the recommended 0.2" × 0.2" copper pads. Full AEC-Q101 validation applies only to HE3/HM3 variants.
How does the bidirectional design of P4SMA82CA-E3/61 affect its circuit implementation?
The P4SMA82CA-E3/61 has no polarity marking and functions identically in both directions, allowing direct placement across AC-coupled lines, differential pairs, or floating references without orientation checks. Unlike unidirectional TVS diodes, the P4SMA82CA-E3/61 uses a symmetrical dual-junction structure - meaning its anode and cathode terminals are electrically interchangeable. This simplifies layout, reduces BOM count, and eliminates risk of reverse installation in high-speed or space-constrained designs.
What is the thermal resistance of P4SMA82CA-E3/61, and how does it impact PCB layout?
The P4SMA82CA-E3/61 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, as specified in Vishay document 88367. This value assumes minimal copper area - increasing pad size or adding thermal vias lowers RθJA. For sustained surge duty or elevated ambient temperatures, designers must ensure the P4SMA82CA-E3/61 stays below 150 °C junction temperature using derating curves in Figure 2 of the datasheet.
Does P4SMA82CA-E3/61 meet any safety certifications?
Yes - the P4SMA82CA-E3/61 is Underwriters Laboratory (UL) recognized under file E136766 for protector classification per UL 497B, covering both unidirectional and bidirectional configurations. This certification validates its use in telecom, industrial, and consumer equipment requiring third-party safety approval. The P4SMA82CA-E3/61 also complies with RoHS Directive 2011/65/EU and meets JESD201 Class 2 whisker resistance requirements.
P4SMA82CA-E3/61 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA82CA-E3/61 FAQ
1.How can I place an order for P4SMA82CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82CA-E3/61 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 P4SMA82CA-E3/61 reliable?
The price and inventory of P4SMA82CA-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA82CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82CA-E3/61?
P4SMA82CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82CA-E3/61 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 P4SMA82CA-E3/61?
For technical support, including P4SMA82CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA82CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA82CA-E3/61 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 P4SMA82CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA82CA-E3/61?
All P4SMA82CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82CA-E3/61, 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 P4SMA82CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA82CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA82CA-E3/61 Tags
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