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Vishay General Semiconductor - Diodes Division SMBJ8.0C-E3/52
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- Part No.:
- SMBJ8.0C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0C-E3/52.pdf
- Description:
- TVS DIODE 8VWM 15VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,345
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Product details
Overview
SMBJ8.0C-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR) at 10 mA, 13.6 V maximum clamping voltage (VC) at 44.1 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform). It is used in DC power input protection for industrial sensors and automotive control modules.
For engineers reviewing the SMBJ8.0C-E3/52 datasheet, SMBJ8.0C-E3/52 pinout, SMBJ8.0C-E3/52 application, or SMBJ8.0C-E3/52 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, JEDEC-compliant packaging details, and AEC-Q101 qualification status - all critical for robust overvoltage protection design in automotive and industrial environments.
Technical Context
The SMBJ8.0C-E3/52 operates as a unidirectional avalanche diode with cathode-banded polarity, leveraging glass-passivated junction technology for stable breakdown and low leakage (<1.0 µA at 8.0 V). Its 100 °C/W junction-to-ambient thermal resistance (RθJA) requires careful PCB copper pad layout per Vishay's 0.2" × 0.2" (5.0 mm × 5.0 mm) recommendation to sustain 5.0 W steady-state dissipation at TA = 50 °C.
It delivers 600 W peak pulse power under standardized 10/1000 µs waveform with 0.01% duty cycle, achieving sub-nanosecond response time and low incremental surge resistance to limit transient energy delivered to downstream ICs. The device meets MSL Level 1 per J-STD-020 and supports automated SMT placement with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 8.0 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below breakdown. |
| VBR (Breakdown Voltage) | 8.89–9.83 V at IT = 10 mA - Confirmed avalanche onset range; ensures reliable triggering above normal rail voltage. |
| VC (Clamping Voltage) | 13.6 V at IPPM = 44.1 A - Peak voltage seen by protected circuit during 600 W transient; defines worst-case stress level. |
| PPPM | 600 W (10/1000 µs) - Surge energy handling capacity; validates suitability for IEC 61000-4-5 Level 3/4 compliance testing. |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - Minimal standby power loss and signal integrity impact on high-impedance nodes. |
| TJ max. | +150 °C - Enables operation in under-hood automotive and industrial ambient environments without thermal shutdown. |
| Package | SMB (DO-214AA) - Standardized SMT footprint with 5.59 mm max length; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, single-ended unidirectional configuration. Cathode identified by molded band; anode is unmarked end. Dimensions: 4.57 × 3.94 × 2.20 mm (L × W × H), with 1.52 mm minimum lead width and 2.18 mm min. terminal length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR. |
| Anode (unmarked end) | Reference node / GND return | Typically tied to system ground or low-impedance return path; completes clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates robustness against lightning-induced surges and relay coil flyback in 24 V industrial systems. |
| 13.6 V clamping at 44.1 A | Ensures downstream 12 V logic ICs (e.g., microcontrollers, CAN transceivers) remain within absolute maximum ratings. |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free assembly without moisture-related popcorning or delamination. |
| Glass-passivated junction | Provides stable VBR over temperature and lifetime, minimizing parameter drift in harsh environments. |
| AEC-Q101 qualified option available | Enables drop-in use in automotive ECUs where qualification is mandatory (via HE3 suffix variants). |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: 12 V battery-supplied BCM exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes on main VBAT rail before LDO regulators and MCU power pins. Use Value: Limits rail voltage to ≤13.6 V during 600 W surges, preventing latch-up or permanent damage to 12 V-rated power management ICs. |
Use Scenario: 24 V digital input channel receiving signals from external field sensors subject to inductive kickback. IC Role / Device Role / Timing Role: Front-end transient suppression on optocoupler input side, shunting surge energy before signal conditioning circuitry. Use Value: Clamps transients within <1 ns to protect 24 V-tolerant Schmitt triggers and isolators without adding propagation delay. |
| Telecom PoE PD Interface | Consumer Appliance Motor Driver Supply Rail |
|
Use Scenario: Powered Device (PD) front-end on IEEE 802.3af/at PSE interface subjected to Ethernet cable ESD and surge coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input after PoE controller, upstream of DC/DC converter. Use Value: Absorbs up to 600 W surge while maintaining ≤13.6 V clamping, ensuring PoE controller ICs (e.g., TPS2375x) survive IEC 61000-4-5 testing. |
Use Scenario: 24 V supply rail feeding H-bridge gate drivers in washing machine motor control board. IC Role / Device Role / Timing Role: Rail-level TVS placed adjacent to bridge driver IC to suppress flyback from brushed DC motor commutation. Use Value: Withstands repetitive 100 A IFSM surges and clamps to 13.6 V, protecting gate drivers from overvoltage-induced shoot-through failure. |
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-E3/52 | Unidirectional, identical VWM/VBR/VC specs; same SMB package and RoHS/E3 marking. | No functional difference - SMBJ8.0C-E3/52 and SMBJ8.0A-E3/52 are identical devices; "C" and "A" suffixes both denote unidirectional in Vishay's naming convention per doc #88392. | Select SMBJ8.0A-E3/52 if cross-referencing legacy BOMs or distributor stock using "A" suffix notation. |
| SMCJ8.0A-E3/57 | Same VWM/VBR/VC but in larger SMC (DO-214AB) package; 1500 W PPPM rating and higher IPPM (100 A). | Better suited for higher-energy transients (e.g., ISO 16750-2 long-duration surges); requires larger PCB area and different land pattern. | Choose SMCJ8.0A-E3/57 only when 600 W is insufficient and board space allows SMC footprint. |
Compared with SMBJ8.0A-E3/52 (functionally identical), and SMCJ8.0A-E3/57 (higher-power SMC variant), SMBJ8.0C-E3/52 offers optimal balance of 600 W surge capability, compact SMB footprint, and AEC-Q101-ready qualification path - making it ideal for space-constrained automotive and industrial DC rail protection where 13.6 V clamping is sufficient.
Availability
SMBJ8.0C-E3/52 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, telecom PoE-powered devices, and consumer appliance motor control systems requiring stable component supply across production lifecycles.
Supply support for SMBJ8.0C-E3/52 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 automotive-grade qualification.
The SMBJ series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for fast, low-clamping overvoltage protection in automotive, industrial, and communications infrastructure applications where space, surge robustness, and AEC-Q101 compliance are critical.
FAQ
What is the polarity configuration of SMBJ8.0C-E3/52?
SMBJ8.0C-E3/52 is a unidirectional transient voltage suppressor diode. Its cathode is marked by a visible band on the SMB (DO-214AA) package body; the unmarked end is the anode. This configuration allows conduction only when the cathode is at a higher potential than the anode - essential for DC rail clamping where reverse polarity protection is not required. The device does not conduct in reverse bias until breakdown occurs.
Does SMBJ8.0C-E3/52 meet AEC-Q101 qualification?
SMBJ8.0C-E3/52 itself is the commercial-grade RoHS-compliant variant (E3 suffix). However, Vishay offers AEC-Q101-qualified versions under the HE3 suffix (e.g., SMBJ8.0AHE3_B/H). While SMBJ8.0C-E3/52 shares identical electrical and thermal specifications, formal AEC-Q101 certification applies only to HE3/HM3-suffixed parts. For automotive production, specify the HE3 variant to ensure qualification documentation and test reports are provided.
What is the maximum clamping voltage of SMBJ8.0C-E3/52 under surge conditions?
The maximum clamping voltage (VC) of SMBJ8.0C-E3/52 is 13.6 V, measured at peak pulse current (IPPM) of 44.1 A using the standard 10/1000 µs double-exponential waveform. This value represents the highest voltage the protected circuit will experience during a full 600 W transient event - a key parameter for verifying compatibility with downstream ICs rated for 16 V absolute maximum input.
How does SMBJ8.0C-E3/52 differ from bidirectional TVS diodes like SMBJ8.0CA?
SMBJ8.0C-E3/52 is unidirectional and functions like a Zener diode in reverse bias, conducting only when cathode voltage exceeds anode by ≥VBR. In contrast, SMBJ8.0CA is bidirectional - symmetrical in both directions with no polarity marking - and used where AC signals or reversible voltage transients require clamping regardless of polarity. SMBJ8.0C-E3/52 is unsuitable for AC line protection but offers lower leakage and tighter VBR tolerance for DC applications.
What PCB layout guidance applies to SMBJ8.0C-E3/52 for optimal thermal performance?
Vishay specifies that SMBJ8.0C-E3/52 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve its rated 5.0 W power dissipation at TA = 50 °C and maintain RθJA ≈ 100 °C/W. Narrow traces or undersized pads increase thermal resistance, causing premature thermal runaway during repetitive surges. Use internal ground planes and thermal vias beneath pads where possible to enhance heat spreading.
SMBJ8.0C-E3/52 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-E3/52 FAQ
1.How can I place an order for SMBJ8.0C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0C-E3/52 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-E3/52 reliable?
The price and inventory of SMBJ8.0C-E3/52 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-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ8.0C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0C-E3/52?
SMBJ8.0C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0C-E3/52 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-E3/52?
For technical support, including SMBJ8.0C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0C-E3/52 requirements.
6.How does Aetrix verify that SMBJ8.0C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0C-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ8.0C-E3/52?
All SMBJ8.0C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0C-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ8.0C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0C-E3/52 Tags
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