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Vishay General Semiconductor - Diodes Division 1.5SMC82CA-M3/57T
- Part No.:
- 1.5SMC82CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82CA-M3/57T.pdf
- Description:
- TVS DIODE 70.1VWM 113VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,092
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Product details
Overview
1.5SMC82CA-M3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 70.1 V standoff voltage (VWM), and clamps to ≤113 V at 13.3 A peak pulse current (IPPM). It protects signal lines and power rails in automotive sensor units and industrial control interfaces against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1.5SMC82CA-M3/57T datasheet, 1.5SMC82CA-M3/57T pinout, 1.5SMC82CA-M3/57T application, or 1.5SMC82CA-M3/57T equivalent, this device delivers verified bidirectional clamping performance with halogen-free RoHS compliance, MSL Level 1 rating, and AEC-Q101 qualification readiness - critical for high-reliability embedded power rail and I/O protection design.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 77.9–86.1 V (min/max) under 1 mA test current, and exhibits low incremental surge resistance for stable clamping under repetitive 10/1000 μs transients. Its glass-passivated junction ensures consistent avalanche behavior and fast response time (<1 ns).
Thermal performance is defined by RθJA = 75 °C/W (junction-to-ambient, on recommended 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W (junction-to-leads), supporting reliable operation up to TJ = 150 °C. The device has no polarity marking - consistent with bidirectional construction - and meets UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70.1 V - maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold |
| VBR (min/max) | 77.9 V / 86.1 V at IT = 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on during overvoltage events |
| VC @ IPPM | ≤113 V at 13.3 A - clamped voltage under 1500 W 10/1000 μs surge; determines protected circuit's maximum transient exposure |
| PPPM | 1500 W - peak pulse power handling capability; enables robust protection against lightning (IEC 61000-4-5) and load dump surges |
| IPPM | 13.3 A - peak pulse current corresponding to 1500 W at VC; used to size PCB trace width and layout thermal relief |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive and industrial ambient environments |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 7.75 mm × 6.22 mm body and 2.62 mm height; compatible with automated pick-and-place |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no cathode/anode marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no polarity-dependent routing required |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line and ground or differential pair |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN FD, USB D+/D−) without polarity concerns |
| 1500 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth, 2 kV line-line) with margin for system-level derating |
| Halogen-free, RoHS-compliant (M3 suffix) | Complies with JEDEC J-STD-20 MSL Level 1 and JESD201 Class 2 whisker resistance - suitable for lead-free reflow assembly |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes voltage overshoot during transient suppression, reducing stress on downstream ICs like microcontrollers and transceivers |
| UL 94 V-0 molding compound | Ensures flame-retardant enclosure integrity in safety-critical applications including automotive ECUs and industrial PLC I/O modules |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Data Line Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor signal line and chassis ground to clamp ±100 V transients within nanoseconds. Use Value: Prevents latch-up or permanent damage to 12-bit ADC inputs and op-amp buffers while maintaining signal integrity below 70.1 V DC operating range. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) in factory automation networks subject to ESD and cable discharge events. IC Role / Device Role / Timing Role: Placed differentially across A/B bus lines to suppress common-mode surges up to ±15 kV contact ESD (IEC 61000-4-2) and 1 kV ring wave (IEC 61000-4-12). Use Value: Maintains bus uptime by limiting transient voltage to ≤113 V, preventing transceiver shutdown or data corruption during field deployment. |
| Consumer Power Adapter Input Stage | Telecom DSL Line Card Surge Protection |
|
Use Scenario: Secondary-side DC input protection for USB-C PD adapters where 5–20 V rails must survive accidental AC mains coupling or transformer flyback spikes. IC Role / Device Role / Timing Role: Connected between VBUS and GND to absorb 1500 W surges without forward conduction during normal 20 V operation. Use Value: Eliminates need for series fuses or resettable PTCs in compact designs, enabling smaller form factors while meeting UL 62368-1 transient withstand requirements. |
Use Scenario: Front-end protection of ADSL/VDSL line cards handling twisted-pair telecom lines vulnerable to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Used in hybrid coupler interface to shunt common-mode energy from tip/ring to ground before reaching line driver ICs. Use Value: Achieves >40 dB common-mode rejection above 1 MHz while clamping longitudinal surges to <113 V - preserving signal-to-noise ratio and bit error rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | Lower peak power (600 W), same VWM (72.2 V), SMB package (smaller footprint, higher RθJA = 85 °C/W) | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for IEC 61000-4-5 surge testing | Select when board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
| 1.5KE82CA | Same VWM (70 V) and VC (113 V), but axial DO-201 package - not surface-mountable; higher mounting inductance | Requires through-hole assembly and larger PCB real estate; less suitable for high-frequency transient suppression due to lead inductance | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ85CA and 1.5KE82CA, the 1.5SMC82CA-M3/57T uniquely balances 1500 W surge capacity, SMC surface-mount compatibility, and halogen-free compliance - making it the preferred choice for production-grade automotive and industrial PCBs requiring automated assembly and IEC 61000-4-5 Level 4 immunity.
Availability
1.5SMC82CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, consumer power adapter inputs, and telecom DSL line cards requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC82CA-M3/57T 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in space-constrained, high-surge environments - delivering AEC-Q101-ready performance in the industry-standard SMC package.
FAQ
What is the clamping voltage of the 1.5SMC82CA-M3/57T under a 10/1000 μs surge?
The 1.5SMC82CA-M3/57T clamps to a maximum of 113 V when subjected to its rated 13.3 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88303 and defines the upper voltage limit imposed on protected circuitry during surge events. Designers use this parameter to verify that downstream components remain within their absolute maximum ratings during transient conditions.
Is the 1.5SMC82CA-M3/57T suitable for automotive applications?
Yes - the 1.5SMC82CA-M3/57T is halogen-free and RoHS-compliant (M3 suffix), meets MSL Level 1 per J-STD-020, and is qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes. While the -M3/57T variant itself is commercial-grade, its electrical and thermal specifications (TJ max = 150 °C, VWM = 70.1 V) align with automotive sensor and body-control module requirements. For certified automotive use, specify 1.5SMC82CAHM3_X variants.
Does the 1.5SMC82CA-M3/57T have polarity markings?
No - the 1.5SMC82CA-M3/57T is a bidirectional TVS diode and carries no cathode band or polarity marking. Its symmetrical construction allows either terminal to serve as anode or cathode depending on transient polarity, simplifying PCB layout for differential or floating signal lines. This distinguishes it from unidirectional variants like 1.5SMC82A-M3/57T, which feature a visible cathode band.
What is the thermal resistance of the 1.5SMC82CA-M3/57T?
The 1.5SMC82CA-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 8.0 mm × 8.0 mm copper pad per terminal, and a junction-to-lead resistance (RθJL) of 15 °C/W. These values assume convection cooling only and inform thermal relief design - for sustained power dissipation, derating curves in Figure 2 of Document 88303 must be applied above 25 °C ambient.
How does the 1.5SMC82CA-M3/57T differ from the unidirectional 1.5SMC82A-M3/57T?
The 1.5SMC82CA-M3/57T is bidirectional with symmetric VBR and VC characteristics in both directions, while the 1.5SMC82A-M3/57T is unidirectional and features a cathode band. Their VWM (70.1 V), VBR (77.9–86.1 V), and VC (113 V) are identical, but the unidirectional version conducts forward current during positive transients only. Use the CA version for AC-coupled or floating lines; use the A version for DC-biased rails where polarity is fixed.
1.5SMC82CA-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, 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):
- 13.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
1.5SMC82CA-M3/57T FAQ
1.How can I place an order for 1.5SMC82CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82CA-M3/57T 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 1.5SMC82CA-M3/57T reliable?
The price and inventory of 1.5SMC82CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC82CA-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC82CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82CA-M3/57T?
1.5SMC82CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82CA-M3/57T 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 1.5SMC82CA-M3/57T?
For technical support, including 1.5SMC82CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82CA-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC82CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82CA-M3/57T 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 1.5SMC82CA-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC82CA-M3/57T?
All 1.5SMC82CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82CA-M3/57T, 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 1.5SMC82CA-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC82CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC82CA-M3/57T Tags
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