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onsemi SMCJ8V0CA
- Part No.:
- SMCJ8V0CA
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8V0CA.pdf
- Description:
- TVS DIODE 8VWM 13.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,228
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Product details
Overview
SMCJ8V0CA from ON Semiconductor (formerly Fairchild) is a bidirectional 1500 W transient voltage suppressor diode designed for robust overvoltage protection in DC power rails and signal lines. It features an 8.0 V reverse stand-off voltage (VRWM), 8.89–9.83 V breakdown voltage (VBR), 13.6 V clamping voltage (VC) at 110.3 A peak pulse current, and <50 µA reverse leakage at VRWM - deployed in industrial power supplies, automotive ECUs, and PoE interfaces.
For engineers reviewing the SMCJ8V0CA datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 10/1000 µs surge, bidirectional symmetry for AC-coupled lines, DO-214AB package thermal robustness, and UL94V-0 flammability compliance for safety-certified designs.
Technical Context
This bidirectional TVS diode operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions - enabling protection of AC signals, differential buses, and ungrounded power paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance.
Response time is typically less than 5.0 ns for bidirectional operation, allowing effective suppression of fast transients such as ESD (IEC 61000-4-2) and EFT (IEC 61000-4-4). The device sustains non-repetitive peak forward surge current up to 200 A per JEDEC method, supporting high-energy surge events in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W on 10/1000 µs waveform - handles high-energy lightning-induced surges in telecom and industrial power inputs. |
| Reverse Stand-Off Voltage | 8.0 V - defines maximum continuous operating voltage before clamping initiates; sets system-level DC rail margin. |
| Breakdown Voltage Range | 8.89–9.83 V at 1 mA test current - ensures reliable turn-on within tight tolerance for predictable protection threshold. |
| Clamping Voltage | 13.6 V at 110.3 A IPPM - limits downstream voltage stress during surge, protecting 12 V logic and analog circuitry. |
| Reverse Leakage | <50 µA at 8.0 V - minimizes standby power loss and avoids false triggering in low-power sensor interfaces. |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 7.11 mm x 6.22 mm footprint and 2.3 mm height for high thermal mass and PCB reliability. |
| Flammability Rating | UL94V-0 - meets stringent plastic housing and enclosure requirements for end-equipment safety certification. |
Pinout & Package
SMCJ8V0CA uses the DO-214AB (SMC) package: a 2-terminal, surface-mount, molded plastic case with cathode identification omitted (bidirectional configuration). The device has no polarity marking; both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge Current Path Terminal | Both terminals serve identical roles - bidirectional conduction enables clamping regardless of transient polarity; no PCB layout polarity constraint. |
| Case / Body | Thermal & Mechanical Interface | Exposed copper pad area provides primary heat dissipation path; requires adequate copper pour (≥100 mm²) for sustained surge handling. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable breakdown voltage over temperature and lifetime - critical for long-term field reliability in automotive and industrial deployments. |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 kV line-to-ground) surge immunity without derating in standard PCB layouts. |
| Clamping ratio VC/VBR ≈ 1.45 | Delivers tight voltage limiting relative to breakdown - reduces overvoltage margin needed for protected ICs like CAN transceivers or MCU I/Os. |
| Fast response time <5.0 ns | Engages before transient energy couples into sensitive circuitry - essential for protecting high-speed interfaces (RS-485, USB, Ethernet PHYs). |
| UL E258596 certified | Validates construction, materials, and surge endurance per UL 497B - simplifies end-product safety approval for telecom and building automation systems. |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: 24 V DC input stage of programmable logic controllers exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontroller power rails. Use Value: Limits transient voltage to ≤13.6 V during 100 A/100 ms load dump events, preventing damage to 12 V-rated LDOs and MCU voltage regulators. |
Use Scenario: CAN FD bus lines (CANH/CANL) in body control units subject to ESD and battery reversal transients. IC Role / Device Role: Bidirectional surge suppressor across differential pair, referenced to chassis ground. Use Value: Symmetric clamping preserves common-mode noise rejection while holding differential swing within ±15 V - maintaining CAN FD bit integrity at 5 Mbps. |
| Power over Ethernet (PoE) PSE Detection | RS-485 Transceiver Protection |
|
Use Scenario: Signature resistor network and detection circuitry in IEEE 802.3af/at PSE controllers. IC Role / Device Role: Low-leakage (≤50 µA) transient clamp on 48 V signature path to avoid false classification. Use Value: Maintains accurate 25 kΩ signature measurement under normal operation while suppressing induced surges from nearby Ethernet cable routing. |
Use Scenario: Termination nodes in factory-floor RS-485 networks prone to ground loop transients and lightning coupling. IC Role / Device Role: Line-to-line and line-to-ground TVS pair protecting transceiver I/O pins (A/B and GND). Use Value: Clamps 1 kV/0.5 J surges to <15 V, preserving transceiver fault tolerance and avoiding bus lockup during maintenance hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC8.0CA (Littelfuse) | Same DO-214AB package, 8.0 V VRWM, but 13.4 V VC at 112 A - slightly tighter clamping; higher IR (100 µA max). | Better clamping margin for 12 V systems; higher leakage may affect ultra-low-power sensor bias networks. | Prefer when minimizing clamped voltage is critical and leakage sensitivity is low. |
| 1.5KE8.0CA (ON Semiconductor) | Higher package thermal resistance (DO-201AD), lower peak pulse power (1500 W same), but slower response (>10 ns) and larger footprint. | Less suitable for space-constrained PCBs or high-frequency transients; better for cost-sensitive, non-density-limited designs. | Choose only if DO-214AB mounting is unavailable and board area permits larger through-hole alternative. |
Compared with SMCJ8V0CA, SAC8.0CA offers marginally improved clamping but trades off leakage sensitivity, while 1.5KE8.0CA sacrifices response speed and board density for legacy compatibility - making SMCJ8V0CA the optimal balance of performance, size, and manufacturability for modern SMT designs.
Availability
SMCJ8V0CA is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, Power over Ethernet (PoE) PSE detection circuits, and RS-485 transceiver protection requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for SMCJ8V0CA 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
ON Semiconductor (formerly Fairchild Semiconductor) is a global semiconductor manufacturer specializing in power management, analog, sensors, and discrete devices for automotive, industrial, and cloud infrastructure markets.
The SMCJ series belongs to ON Semiconductor's transient voltage suppressor product line, engineered specifically for high-reliability overvoltage protection in harsh electromagnetic environments where fast response, precise clamping, and safety certification are mandatory.
FAQ
What is the clamping voltage of SMCJ8V0CA at its rated peak pulse current?
The SMCJ8V0CA clamps to a maximum of 13.6 V at its specified peak pulse current of 110.3 A under the 10/1000 µs waveform condition. This value is measured per JEDEC standards and represents the upper limit of voltage seen by downstream circuitry during worst-case surge events - a critical parameter for ensuring compatibility with 12 V logic families and automotive-grade ICs protected by the SMCJ8V0CA.
Is SMCJ8V0CA unidirectional or bidirectional, and how does that affect PCB layout?
SMCJ8V0CA is a bidirectional TVS diode, indicated by the "CA" suffix and absence of cathode band marking. Its terminals are electrically symmetrical, meaning it clamps transients of either polarity identically - eliminating polarity orientation constraints during placement. This simplifies PCB layout for AC-coupled lines like CAN, RS-485, or Ethernet, where no anode/cathode assignment is required, and allows single-part stocking for dual-polarity protection needs.
Does SMCJ8V0CA meet UL safety certification requirements?
Yes, SMCJ8V0CA carries UL Certificate #E258596 and complies with UL 497B for transient voltage suppressors. It also meets UL94V-0 flammability requirements for its molded plastic package. These certifications validate its construction integrity, surge endurance, and flame resistance - directly supporting end-equipment safety approvals in North America for industrial controls, building automation, and telecom infrastructure using the SMCJ8V0CA.
What is the maximum reverse leakage current for SMCJ8V0CA at its rated stand-off voltage?
The maximum reverse leakage current for SMCJ8V0CA is 50 µA at 8.0 V reverse stand-off voltage (VRWM) and 25°C ambient temperature. This low leakage ensures minimal impact on high-impedance sensing circuits, battery-powered nodes, or precision reference paths - a key differentiator versus higher-leakage alternatives that could introduce offset errors or drain standby current in always-on systems using the SMCJ8V0CA.
Can SMCJ8V0CA be used in automotive applications compliant with ISO 7637-2?
Yes, SMCJ8V0CA is routinely deployed in automotive body control modules and infotainment power supplies to meet ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 3a/b (switching transients) requirements. Its 1500 W peak pulse rating, 13.6 V clamping, and 150°C junction temperature rating align with AEC-Q101 stress test conditions - though full qualification requires system-level validation, the SMCJ8V0CA's parameters are explicitly cited in automotive design guides for 12 V/24 V rail protection.
SMCJ8V0CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 110.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ8V0CA FAQ
1.How can I place an order for SMCJ8V0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8V0CA 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 SMCJ8V0CA reliable?
The price and inventory of SMCJ8V0CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ8V0CA is usually 5 days.
3.What payment methods are accepted for SMCJ8V0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8V0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8V0CA?
SMCJ8V0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8V0CA 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 SMCJ8V0CA?
For technical support, including SMCJ8V0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8V0CA requirements.
6.How does Aetrix verify that SMCJ8V0CA is sourced from the original manufacturer or authorized distributors?
All SMCJ8V0CA 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 SMCJ8V0CA meets industry standards.
7.What is the process for return or replacement of SMCJ8V0CA?
All SMCJ8V0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8V0CA, 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 SMCJ8V0CA part is unused and in its original packaging.
Return procedure for SMCJ8V0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8V0CA Tags
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