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Vishay General Semiconductor - Diodes Division SMB8J15CAHE3_A/I
- Part No.:
- SMB8J15CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J15CAHE3_A/I.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,116
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Product details
Overview
SMB8J15CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection. It features a 15 V standoff 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. Used to protect automotive sensor signal lines, power rails, and I/O interfaces against ESD and load dump transients.
For engineers reviewing the SMB8J15CAHE3_A/I datasheet, SMB8J15CAHE3_A/I pinout, SMB8J15CAHE3_A/I application, or SMB8J15CAHE3_A/I equivalent, this part is selected for AEC-Q101-qualified bidirectional surge suppression where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are required in space-constrained surface-mount designs.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, triggering when reverse voltage exceeds its breakdown range (16.7–18.5 V at 1 mA test current). Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Constructed with glass-passivated silicon junction and matte tin-plated leads, it supports J-STD-002 solderability and JESD22-B102 whisker resistance (Class 2). Thermal resistance is 72 °C/W junction-to-ambient on standard 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 16.7 V / 18.5 V - breakdown occurs within this range at 1 mA, defining turn-on threshold |
| VC @ IPPM | 24.4 V - clamps transient to ≤24.4 V at 32.8 A, limiting stress on downstream ICs |
| PPPM | 800 W - peak surge power handling capability under standardized 10/1000 µs waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage ensures minimal standby power loss and signal integrity |
| TJ max | +150 °C - enables operation in under-hood automotive environments |
| MSL Level | Level 1 - supports lead-free reflow up to 260 °C peak without preconditioning |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking - both terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Either terminal conducts during overvoltage event in either direction; no cathode band marking |
| Case (body) | Thermal and mechanical interface | Plastic body provides UL 94 V-0 flammability rating and thermal conduction to PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Glass passivated junction | Ensures stable breakdown characteristics and long-term reliability under thermal cycling |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| MSL Level 1 compliance | Enables direct placement into high-temperature lead-free reflow without baking or special handling |
| RoHS-compliant & halogen-free option | HE3 suffix indicates RoHS-compliant construction; HM3 denotes halogen-free variant |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN or SENT signal lines in automotive temperature, pressure, or position sensors exposed to load dump and battery reversal events. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across signal pair or signal-to-ground to divert surge energy before reaching analog front-end or microcontroller input. Use Value: Clamps 15 V nominal lines to ≤24.4 V during 32.8 A surges, preserving ADC accuracy and preventing latch-up in 3.3 V/5 V sensor ICs. | Use Scenario: Safeguarding CAN transceiver inputs (e.g., TJA1042, SN65HVD230) in factory automation nodes subject to EFT and surge per IEC 61000-4-4/5. IC Role / Device Role / Timing Role: Placed differentially across CAN_H/CAN_L or common-mode across each line to ground, suppressing common- and differential-mode transients. Use Value: Maintains signal integrity below 24.4 V clamping while adding <0.5 pF capacitance at 0 V bias, avoiding CAN bit-rate degradation. |
| Consumer Power Adapter Input | Telecom DC Power Feed |
Use Scenario: Input-stage surge protection for USB-C PD adapters and wireless charging controllers subjected to AC line transients and hot-plug events. IC Role / Device Role / Timing Role: Shunt-connected between primary-side DC bus (e.g., post-bridge rectifier) and ground to absorb 800 W surges without failure. Use Value: Withstands repeated 10/1000 µs surges up to 800 W while maintaining 1.0 µA leakage at 15 V, minimizing no-load power loss. | Use Scenario: Protecting -48 V DC telecom power feeds feeding remote radio units (RRUs) and small cells against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Mounted on power entry board across -48 V rail and return, clamping positive/negative polarity surges equally due to bidirectional symmetry. Use Value: Delivers 800 W bidirectional surge capacity with 150 °C max junction temperature rating, supporting extended outdoor deployment life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J15CAHM3_A/I | Halogen-free construction; identical electrical specs and AEC-Q101 qualification | Required where halogen-free compliance is mandated by OEM or regional environmental regulations | Select when RoHS + halogen-free certification is contractually required; otherwise HE3 suffices |
| SMBJ15CAHE3_A/I | Same VWM (15 V), VC (24.4 V), and bidirectional configuration but rated for 600 W PPPM (vs. 800 W) | Suitable for lower-energy surge environments (e.g., consumer electronics) but not automotive load dump | Choose only if system-level testing confirms 600 W margin is sufficient; SMB8J15CAHE3_A/I provides 33% higher surge headroom |
Compared with SMBJ15CAHE3_A/I and SMB8J15CAHM3_A/I, the SMB8J15CAHE3_A/I delivers higher 800 W surge capacity in an AEC-Q101-qualified, RoHS-compliant SMB package-making it the preferred choice for automotive-grade bidirectional protection where robustness and regulatory alignment are jointly critical.
Availability
SMB8J15CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, telecom power systems, and consumer power adapter designs requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMB8J15CAHE3_A/I 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 validation.
The SMB8JxxCA series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101-compliant surge suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB8J15CAHE3_A/I at its rated peak pulse current?
The SMB8J15CAHE3_A/I has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPPM) of 32.8 A under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C on 5.0 mm × 5.0 mm copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB8J15CAHE3_A/I maintains this clamping performance consistently across its qualified operating temperature range.
Is SMB8J15CAHE3_A/I suitable for automotive applications?
Yes, SMB8J15CAHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant, AEC-Q101-qualified construction. It meets requirements for under-hood and cabin-mounted ECUs, sensor interfaces, and infotainment power rails. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and validated surge performance per ISO 7637-2 make SMB8J15CAHE3_A/I appropriate for production automotive systems.
How does the bidirectional configuration of SMB8J15CAHE3_A/I affect its circuit placement?
The SMB8J15CAHE3_A/I is bidirectional and lacks polarity markings-both terminals are electrically symmetric. This allows placement across AC-coupled signal pairs (e.g., CAN_H/CAN_L), differential buses, or any node where transients may occur with either polarity. Unlike unidirectional TVS diodes, SMB8J15CAHE3_A/I requires no orientation check during automated assembly, simplifying layout and reducing manufacturing error risk.
What is the standoff voltage (VWM) rating for SMB8J15CAHE3_A/I, and why is it important?
The standoff voltage (VWM) of SMB8J15CAHE3_A/I is 15 V-this is the maximum continuous reverse voltage the device can withstand without entering avalanche conduction. Selecting VWM ≥ 1.1× normal operating voltage prevents false triggering during ripple or tolerance excursions. For a 12 V automotive system, SMB8J15CAHE3_A/I's 15 V VWM provides safe margin while enabling effective clamping at 24.4 V during surges.
Does SMB8J15CAHE3_A/I require special PCB layout considerations?
Yes-optimal performance of SMB8J15CAHE3_A/I requires mounting on minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve specified thermal resistance (72 °C/W) and surge ratings. Narrow traces or insufficient copper reduce heat dissipation and degrade PPPM capability. The SMB8J15CAHE3_A/I datasheet specifies exact pad dimensions and recommends avoiding thermal relief on high-current paths to maintain clamping consistency during repetitive surges.
SMB8J15CAHE3_A/I 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:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 32.8A
- Power - Peak Pulse:
- 800W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J15CAHE3_A/I FAQ
1.How can I place an order for SMB8J15CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J15CAHE3_A/I 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 SMB8J15CAHE3_A/I reliable?
The price and inventory of SMB8J15CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J15CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMB8J15CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J15CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J15CAHE3_A/I?
SMB8J15CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J15CAHE3_A/I 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 SMB8J15CAHE3_A/I?
For technical support, including SMB8J15CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J15CAHE3_A/I requirements.
6.How does Aetrix verify that SMB8J15CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB8J15CAHE3_A/I 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 SMB8J15CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMB8J15CAHE3_A/I?
All SMB8J15CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J15CAHE3_A/I, 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 SMB8J15CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMB8J15CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J15CAHE3_A/I Tags
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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