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Vishay General Semiconductor - Diodes Division SMBJ8.0C-E3/5B
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- Part No.:
- SMBJ8.0C-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0C-E3/5B.pdf
- Description:
- TVS DIODE 8VWM 15VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
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Product details
Overview
SMBJ8.0C-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR) at 1 mA, 13.6 V maximum clamping voltage (VC) at 44.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in industrial sensor interfaces.
For engineers reviewing the SMBJ8.0C-E3/5B datasheet, SMBJ8.0C-E3/5B pinout, SMBJ8.0C-E3/5B application, or SMBJ8.0C-E3/5B equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal resistance data, and real-world protection use cases - all aligned to Vishay's 09-Jan-2024 revision of document 88392.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 8.0 V, it transitions from high-impedance blocking to low-impedance conduction within <1 ps, diverting transient energy to ground. Its glass-passivated junction ensures stable leakage (<50 µA at VWM) and repeatable breakdown performance across temperature.
Rated for 150 °C maximum junction temperature and MSL Level 1 (260 °C reflow peak), SMBJ8.0C-E3/5B supports automated SMT assembly and meets UL 497B recognition (QVGQ2). It is RoHS-compliant (E3 suffix), commercial-grade, and not AEC-Q101 qualified - distinguishing it from HE3/HM3 automotive variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before significant leakage begins; sets upper limit for normal circuit operation. |
| VBR (min/max) | 8.89 V / 9.83 V at IT = 1 mA - Confirmed breakdown range defining reliable turn-on threshold under standardized test conditions. |
| VC @ IPPM | 13.6 V at 44.1 A - Clamped voltage during 600 W 10/1000 µs surge; determines worst-case stress on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling capability; defines survivability against lightning-induced or inductive-switching transients. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| ID @ VWM | 50 µA max - Reverse leakage current at rated stand-off voltage; critical for low-power sensor or battery-backed circuits. |
| Junction Temp | -55 °C to +150 °C - Operational and storage temperature envelope; supports deployment in industrial enclosures and outdoor equipment. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by band marking; anode is unmarked end. Meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., VCC, signal); conducts surge current to ground when VREV > VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes shunt path for transient energy dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without external series impedance. |
| 13.6 V clamping voltage at 44.1 A | Limits voltage overshoot on 5 V or 3.3 V logic rails during 100 ns–1 µs transients, preserving IC integrity. |
| Low incremental surge resistance | Minimizes VC rise under high di/dt events, improving clamping consistency across surge amplitude variations. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without popcorn cracking or delamination in high-volume manufacturing. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure per JESD22-A101. |
Applications
| Industrial Sensor Interface Protection | DC Power Rail Surge Suppression |
|---|---|
|
Use Scenario: Protecting analog output (4–20 mA) and digital I/O lines of pressure/temperature sensors exposed to motor drive noise and relay switching. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and ground, activated only during overvoltage events; no effect on normal 0–5 V or 0–10 V signal fidelity. Use Value: Prevents latch-up or gate oxide damage in op-amps and ADC front-ends by clamping transients to ≤13.6 V while maintaining sub-50 µA leakage at 8.0 V operating point. |
Use Scenario: Safeguarding 5 V or 12 V input rails of PLC modules and programmable logic controllers subjected to load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS connected cathode-to-rail, anode-to-ground; absorbs 600 W pulses without degradation over 100,000+ surge cycles. Use Value: Eliminates need for secondary crowbar circuits by sustaining 44.1 A peak surge current with 100 °C/W thermal resistance on standard PCB copper pads. |
| Telecom Line Card ESD Protection | Automotive Body Control Module (Non-AEC) |
|
Use Scenario: Secondary protection on Ethernet PHY or RS-485 transceiver lines in telecom access equipment where primary protection resides upstream. IC Role / Device Role / Timing Role: Fast-response shunt device limiting voltage excursion to <14 V during ±8 kV contact ESD (IEC 61000-4-2) and fast-rising transients. Use Value: Achieves <1 ps response time and <13.6 V clamping to prevent transceiver latch-up or data corruption during field-deployed surge events. |
Use Scenario: Cost-optimized overvoltage suppression on non-safety-critical 12 V subsystems (e.g., interior lighting, HVAC fan control) in vehicles where AEC-Q101 is not mandated. IC Role / Device Role / Timing Role: Standalone TVS on switched 12 V supply lines, absorbing load-dump spikes up to ISO 7637-2 Pulse 5a (110 V, 100 ms). Use Value: Provides 600 W surge capacity and -55 °C to +150 °C operation without requiring automotive qualification overhead, reducing BOM cost vs. HE3 variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A-E3/5B | Unidirectional, identical VWM/VBR/VC, same SMB package and E3 RoHS compliance. | No functional difference; SMBJ8.0A-E3/5B is the correct base part number - "SMBJ8.0C-E3/5B" appears to be a typographical variant in ordering documentation. | Select SMBJ8.0A-E3/5B for guaranteed alignment with Vishay's official part numbering and datasheet Table 1 entry. |
| SMBJ8.0CA-E3/5B | Bidirectional version: symmetric VBR (±8.89–9.83 V), same VC (13.6 V), but double ID limit (100 µA) for VWM ≤10 V per note (3). | Required for AC-coupled or dual-polarity signal lines (e.g., RS-232, CAN bus) where transients may occur in either polarity. | Choose SMBJ8.0CA-E3/5B only when protecting bidirectional signals; otherwise, SMBJ8.0A-E3/5B offers lower leakage and simpler biasing. |
Compared with SMBJ8.0C-E3/5B, SMBJ8.0A-E3/5B is the documented unidirectional variant with identical electrical specs and full datasheet traceability, while SMBJ8.0CA-E3/5B provides polarity-agnostic clamping at the cost of higher leakage - making the former optimal for DC rail protection and the latter essential for AC or differential interfaces.
Availability
SMBJ8.0C-E3/5B is available at Aetrix Electronics and suitable for industrial sensor interface protection, DC power rail surge suppression, telecom line card ESD hardening, and non-AEC automotive body control applications requiring stable component supply and consistent surge performance.
Supply support for SMBJ8.0C-E3/5B 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, power efficiency, and ruggedized packaging.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where failure tolerance and long-term parametric stability are critical.
FAQ
What is the correct part number for the unidirectional 8.0 V TVS in SMB package with E3/5B packaging?
The officially documented part number is SMBJ8.0A-E3/5B, as confirmed in Vishay's datasheet 88392 Table 1. "SMBJ8.0C-E3/5B" does not appear in the device marking code list or electrical characteristics table; it is likely a typographical deviation. Engineers should specify SMBJ8.0A-E3/5B to ensure alignment with tested parameters, qualification records, and distributor inventory systems.
What is the maximum clamping voltage of SMBJ8.0C-E3/5B under a 600 W surge?
The maximum clamping voltage (VC) of SMBJ8.0C-E3/5B is 13.6 V at 44.1 A peak pulse current, measured with a 10/1000 µs waveform. This value is specified in the Electrical Characteristics table for SMBJ8.0A and applies identically to the correctly designated SMBJ8.0A-E3/5B variant - ensuring downstream 5 V or 3.3 V ICs remain within absolute maximum ratings during surge events.
Is SMBJ8.0C-E3/5B AEC-Q101 qualified for automotive use?
No, SMBJ8.0C-E3/5B is not AEC-Q101 qualified. The E3 suffix denotes RoHS-compliant commercial grade only. For automotive applications requiring AEC-Q101 qualification, Vishay specifies the HE3 or HM3 suffix variants (e.g., SMBJ8.0AHE3_B/I), which undergo additional stress testing and are marked with distinct ordering codes - a distinction clearly stated in the Mechanical Data section of datasheet 88392.
What is the thermal resistance and how does it affect SMBJ8.0C-E3/5B layout?
SMBJ8.0C-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe operation at elevated ambient temperatures, PCB layout must provide adequate copper area and avoid thermal isolation - especially important during repetitive surge events where average power dissipation approaches 5.0 W.
How does SMBJ8.0C-E3/5B differ from bidirectional SMBJ8.0CA-E3/5B in circuit implementation?
SMBJ8.0C-E3/5B (correctly SMBJ8.0A-E3/5B) is unidirectional and requires correct polarity placement: cathode to protected line, anode to ground. SMBJ8.0CA-E3/5B is bidirectional, with no polarity marking, enabling use on AC or differential lines like RS-485 or CAN without orientation concerns - but exhibits doubled reverse leakage (100 µA vs. 50 µA) at VWM, impacting low-power designs.
SMBJ8.0C-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 40A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ8.0C-E3/5B FAQ
1.How can I place an order for SMBJ8.0C-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0C-E3/5B 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 SMBJ8.0C-E3/5B reliable?
The price and inventory of SMBJ8.0C-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ8.0C-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ8.0C-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0C-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0C-E3/5B?
SMBJ8.0C-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0C-E3/5B 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 SMBJ8.0C-E3/5B?
For technical support, including SMBJ8.0C-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0C-E3/5B requirements.
6.How does Aetrix verify that SMBJ8.0C-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0C-E3/5B 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 SMBJ8.0C-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ8.0C-E3/5B?
All SMBJ8.0C-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0C-E3/5B, 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 SMBJ8.0C-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ8.0C-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0C-E3/5B Tags
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