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Vishay General Semiconductor - Diodes Division SMB8J15C-E3/52
- Part No.:
- SMB8J15C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J15C-E3/52.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB8J15C-E3/52 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on signal and power lines. It features a 15 V stand-off voltage (VWM), 24.4 V clamping voltage (VC) at 32.8 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform. It is AEC-Q101 qualified and used to protect automotive sensor interfaces and industrial I/O lines against ESD and load dump transients.
For engineers reviewing the SMB8J15C-E3/52 datasheet, SMB8J15C-E3/52 pinout, SMB8J15C-E3/52 application, or SMB8J15C-E3/52 equivalent, key selection criteria include bi-directional clamping capability, 1.0 µA max reverse leakage at VWM, thermal resistance (RθJA = 72 °C/W), RoHS-compliant matte tin terminations, and MSL Level 1 moisture sensitivity rating.
Technical Context
This bi-directional TVS diode operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive surge stress.
Designed per ANSI/IEEE C62.35 standards, it delivers fast response time (<1 ns) and maintains clamping performance up to 150 °C junction temperature. The device is rated for non-repetitive 10/1000 µs surges and derates linearly above 25 °C ambient per published thermal curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin for 12 V automotive or 15 V industrial bus lines. |
| VBR min/max | 16.7 V / 18.5 V - Breakdown occurs within this range at 1 mA test current; ensures reliable triggering above normal operating voltage. |
| VC @ IPPM | 24.4 V - Clamped voltage during 32.8 A 10/1000 µs surge; limits downstream IC stress to safe levels below typical 28 V absolute maximum ratings. |
| PPPM | 800 W - Peak pulse power handling with 10/1000 µs waveform; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity testing. |
| ID @ VWM | 1.0 µA - Reverse leakage at 15 V; negligible loading on high-impedance sensor bias networks or precision reference paths. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB thermal pad design for sustained surge duty cycles. |
Pinout & Package
DO-214AA (SMB) surface-mount package: molded epoxy case with matte tin-plated leads, compliant with J-STD-002 solderability and JESD 201 Class 1A whisker resistance. No polarity marking - bi-directional symmetry eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge conduction path | Both terminals function identically; no DC bias dependency - ideal for protecting AC signals, RS-485 buses, or transformer-coupled interfaces. |
| Case (body) | Thermal and mechanical interface | Non-electrical; transfers heat to PCB copper pads - requires minimum 5.0 mm × 5.0 mm copper area per terminal per datasheet layout recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance - suitable for engine control, ADAS sensor, and body electronics modules. |
| Bi-directional clamping | Enables single-device protection of differential pairs (e.g., CAN, LIN, RS-485) without external polarity management or dual-diode arrangements. |
| Low clamping ratio (VC/VWM = 1.63) | Minimizes overvoltage overshoot during transients - critical for safeguarding 3.3 V or 5 V logic inputs connected to unprotected external connectors. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling - reduces manufacturing complexity and cost. |
| Glass-passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift - essential for long-life industrial deployments. |
Applications
| Automotive Sensor Interface | Industrial I/O Protection |
|---|---|
|
Use Scenario: Protecting analog outputs of pressure/temperature sensors connected to vehicle battery-supplied harnesses subject to load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between sensor output line and ground, absorbing >800 W surge energy without failure. Use Value: Prevents latch-up or gate oxide damage in downstream ADC drivers and microcontroller input pins during 12 V system transients. |
Use Scenario: Shielding 24 V PLC digital input channels from inductive kickback when switching solenoids or relays. IC Role / Device Role / Timing Role: Primary surge suppression element mounted directly at connector entry point, limiting line voltage to ≤24.4 V during 10/1000 µs events. Use Value: Eliminates need for series current-limiting resistors or secondary Zener clamps - simplifies BOM and improves response latency. |
| RS-485 Transceiver Port | USB Type-C CC Line |
|
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) on factory floor communication networks exposed to ESD and ground bounce. IC Role / Device Role / Timing Role: Bi-directional TVS placed across A/B differential pair and referenced to ground, suppressing common-mode and differential-mode transients. Use Value: Maintains signal integrity by clamping surges within 1 ns while adding <1 pF junction capacitance - no data rate degradation at 10 Mbps. |
Use Scenario: Protecting USB Type-C Configuration Channel (CC) pins from human-body-model (HBM) ESD events during cable insertion/removal. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) bi-directional clamp placed inline with CC1/CC2 lines, operating within ±20 V fault window of USB PD specification. Use Value: Prevents false connection detection or port controller reset due to ESD-induced voltage spikes - ensures robust plug/unplug cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-E3/52 | Same DO-214AA package and 15 V VWM, but rated for 1000 W PPPM (uni-directional only); not bi-directional. | Requires polarity-aware placement; unsuitable for AC or differential lines without redesign. | Select only if circuit topology guarantees unidirectional surge direction and higher 1000 W rating is required. |
| SMCJ15CA | DO-214AB (SMC) package, same 15 V VWM and bi-directionality, but 1500 W PPPM and higher IPPM (69.4 A). | Larger footprint (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm); incompatible with SMB land patterns. | Choose when higher surge margin is needed and PCB layout allows SMC package; not drop-in compatible. |
Compared with SMB8J15C-E3/52, SMBJ15CA-E3/52 offers higher uni-directional power rating but lacks bi-directional symmetry, while SMCJ15CA provides greater surge capacity at the cost of board space - SMB8J15C-E3/52 uniquely balances compact SMB size, bi-directional operation, and AEC-Q101 compliance for space-constrained automotive and industrial nodes.
Availability
SMB8J15C-E3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, RS-485 fieldbus nodes, and USB Type-C peripheral designs requiring stable component supply and AEC-Q101 assurance.
Supply support for SMB8J15C-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 application-specific performance.
The SMB8JxxCA series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB8J15C-E3/52 at its rated peak pulse current?
The SMB8J15C-E3/52 has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPPM) of 32.8 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream circuitry remains within safe operating limits during surge events. The clamping performance is guaranteed across the full operating temperature range up to 150 °C junction temperature.
Is SMB8J15C-E3/52 suitable for automotive applications?
Yes, SMB8J15C-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and chassis-mounted systems. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and glass-passivated junction support reliability in demanding environments such as engine control units, ADAS camera modules, and body control modules where ISO 7637-2 and ISO 16750-2 compliance is required.
How does the bi-directional nature of SMB8J15C-E3/52 affect its placement on the PCB?
The SMB8J15C-E3/52 has no polarity marking and functions identically in both directions, so PCB placement does not require orientation alignment. This simplifies automated assembly and eliminates risk of reverse installation. It can be mounted across any two points needing symmetrical overvoltage protection - such as differential signal pairs, AC-coupled lines, or bidirectional data buses like CAN or RS-485 - without additional circuitry or layout constraints.
What is the maximum reverse leakage current for SMB8J15C-E3/52 at its stand-off voltage?
At its 15 V stand-off voltage (VWM), the SMB8J15C-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C ambient temperature. This ultra-low leakage ensures minimal loading on high-impedance sensor bias networks, precision voltage references, or battery-powered circuits where quiescent current must be tightly controlled.
Does SMB8J15C-E3/52 meet RoHS and lead-free soldering requirements?
Yes, SMB8J15C-E3/52 carries the "E3" suffix indicating RoHS-compliance per Directive 2011/65/EU and is qualified for lead-free reflow soldering with a maximum peak temperature of 260 °C (MSL Level 1). Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, and it passes JESD 201 Class 1A whisker testing - making it suitable for modern high-reliability manufacturing processes.
SMB8J15C-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 29.7A
- Power - Peak Pulse:
- 800W
- 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 (SMB)
SMB8J15C-E3/52 FAQ
1.How can I place an order for SMB8J15C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J15C-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 SMB8J15C-E3/52 reliable?
The price and inventory of SMB8J15C-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 SMB8J15C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J15C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J15C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J15C-E3/52?
SMB8J15C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J15C-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 SMB8J15C-E3/52?
For technical support, including SMB8J15C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J15C-E3/52 requirements.
6.How does Aetrix verify that SMB8J15C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J15C-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 SMB8J15C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J15C-E3/52?
All SMB8J15C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J15C-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 SMB8J15C-E3/52 part is unused and in its original packaging.
Return procedure for SMB8J15C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J15C-E3/52 Tags
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Diodes Incorporated
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