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Vishay General Semiconductor - Diodes Division SMB8J15CAHE3_B/H
- Part No.:
- SMB8J15CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J15CAHE3_B/H.pdf
- Description:
- 800W,15V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,703
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Product details
Overview
SMB8J15CAHE3_B/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage (VC) at 32.8 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - optimized for automotive and industrial interface protection.
For engineers reviewing the SMB8J15CAHE3_B/H datasheet, SMB8J15CAHE3_B/H pinout, SMB8J15CAHE3_B/H application, or SMB8J15CAHE3_B/H equivalent, key selection criteria include AEC-Q101 qualification, bidirectional symmetry, low clamping ratio (VC/VWM = 1.63), and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche breakdown mechanism to divert surge energy away from downstream ICs. Its bidirectional structure enables symmetric protection on AC-coupled or floating lines without polarity constraints.
Designed per ANSI/IEEE C62.35 standards, it delivers sub-nanosecond response time and low incremental surge resistance (<0.7 Ω typical), ensuring effective suppression of ESD, lightning-induced surges, and inductive switching spikes up to 32.8 A under standardized 10/1000 µs conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 16.7 V / 18.5 V at 1 mA - verified breakdown threshold ensures predictable turn-on across temperature and lot variation. |
| VC @ IPPM | 24.4 V at 32.8 A - clamping voltage limits stress on protected circuitry during worst-case 800 W surge events. |
| PPPM | 800 W (10/1000 µs) - energy-handling capacity suitable for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 compliance. |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on sensor interfaces. |
| TJ max | +150 °C - supports under-hood automotive environments and high-power-density PCB layouts. |
| MSL Level | Level 1 (J-STD-020) - allows unlimited floor life and reflow up to 260 °C peak, compatible with standard lead-free assembly. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTOL, TCT, and ESD testing per stress test plan. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Transient current return path (bidirectional) | Both terminals function identically; no cathode band - enables layout flexibility on differential or floating lines. |
| Anode (Cathode) | Transient current entry point (bidirectional) | Identical electrical behavior in either direction; eliminates orientation errors during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and infotainment interfaces. |
| 800 W peak pulse power | Withstands repeated ISO 7637-2 Pulse 5a surges (100 V, 500 ms) without degradation when mounted on 5.0 mm × 5.0 mm pads. |
| Low clamping ratio (VC/VWM = 1.63) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfacing with 12 V supply domains. |
| MSL Level 1 rating | Enables direct placement into high-volume SMT lines without dry-pack or baking requirements. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments. |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS-compliant construction; HM3 variant adds halogen-free molding compound for stringent environmental compliance. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L differential pair against load dump and ESD in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt transients before reaching CAN transceiver. Use Value: Maintains signal integrity below 24.4 V clamping during 32.8 A surges, preserving bit error rate and enabling robust communication up to 1 Mbps. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in PLC analog input modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage limiter across loop terminals, coordinated with series current-limiting resistor. Use Value: Prevents op-amp saturation and ADC damage by limiting input voltage to ≤24.4 V during 800 W transients. |
| USB Type-C Port Protection | Automotive Camera Power Line |
Use Scenario: Guarding VBUS and CC lines in automotive USB-C ports against hot-plug surges and ESD. IC Role / Device Role / Timing Role: Fast-response TVS placed adjacent to connector to absorb ±15 kV contact ESD per IEC 61000-4-2. Use Value: Sub-ns response and 1.0 µA leakage ensure no impact on USB 2.0 signaling integrity or power delivery negotiation. |
Use Scenario: Protecting 12 V power feed to surround-view camera modules subject to load dump pulses per ISO 16750-2. IC Role / Device Role / Timing Role: Primary surge diverter on main power rail upstream of DC/DC converter input. Use Value: Withstands 800 W pulses while maintaining <24.4 V rail clamping, preventing brownout or latch-up in image sensor SoCs. |
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 | Unqualified for AEC-Q101; same VWM/VC but lower PPPM (600 W vs. 800 W). | Limited to commercial-grade industrial or consumer equipment without automotive qualification requirements. | Select when cost sensitivity outweighs automotive reliability validation and surge energy is ≤600 W. |
| SMCJ15CAHE3_A/H | Same AEC-Q101 qualification but larger SMC (DO-214AB) package; higher PPPM (1500 W) and IPPM (123 A). | Requires larger PCB footprint and higher thermal mass; suited for primary-level board-level protection. | Choose when system-level surge threat exceeds 800 W or when design allows SMC footprint and higher current handling. |
Compared with SMBJ15CA-E3/52, SMB8J15CAHE3_B/H provides 33 % higher surge power rating and automotive qualification; versus SMCJ15CAHE3_A/H, it offers 40 % smaller footprint with trade-off in absolute energy handling - ideal for space-constrained automotive ECUs.
Availability
SMB8J15CAHE3_B/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and USB-C port protection requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMB8J15CAHE3_B/H 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 high-reliability and automotive-grade solutions.
The SMB8JxxCA family targets high-density, AEC-Q101-compliant transient suppression for automotive data buses, sensor interfaces, and power rails where space, reliability, and standardized surge immunity are critical.
FAQ
What is the clamping voltage of SMB8J15CAHE3_B/H at its rated peak pulse current?
The SMB8J15CAHE3_B/H has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPPM) of 32.8 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88422. The low VC ensures downstream ICs remain within safe operating voltage limits during surge events.
Is SMB8J15CAHE3_B/H suitable for automotive applications?
Yes, SMB8J15CAHE3_B/H 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 electronics including CAN, LIN, and camera power lines, and is validated for temperature cycling, high-temperature operating life, and ESD robustness per the AEC-Q101 stress test plan.
What does the "B/H" suffix mean in SMB8J15CAHE3_B/H?
The "B/H" suffix in SMB8J15CAHE3_B/H indicates packaging configuration: "B" denotes tape-and-reel format per EIA-481, and "H" specifies a 7-inch diameter reel containing 750 units. This ordering code aligns with Vishay's preferred package code system and ensures compatibility with standard SMT pick-and-place equipment calibrated for 7″ reels.
How does SMB8J15CAHE3_B/H differ from unidirectional SMB10J15AHE3_B/H?
SMB8J15CAHE3_B/H is bidirectional with symmetrical breakdown (VBR = 16.7–18.5 V in both directions) and 800 W PPPM, whereas SMB10J15AHE3_B/H is unidirectional (cathode-banded), offers 1000 W PPPM, and supports 100 A IFSM. The bidirectional nature of SMB8J15CAHE3_B/H makes it suitable for AC-coupled or floating lines like CAN or USB CC, while the unidirectional version is used on DC rails with defined polarity.
What PCB pad layout is recommended for optimal thermal and surge performance of SMB8J15CAHE3_B/H?
Vishay specifies a minimum 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pad area per terminal for SMB8J15CAHE3_B/H to achieve rated 800 W peak pulse power and proper thermal dissipation. The pad layout must follow the DO-214AA outline in the datasheet, with no solder mask defined over pads to maximize thermal conduction and surge current handling capability.
SMB8J15CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 32.8A
- Power - Peak Pulse:
- 800W
- Power Line Protection:
- No
- Applications:
- Telecom
- 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_B/H FAQ
1.How can I place an order for SMB8J15CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J15CAHE3_B/H 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_B/H reliable?
The price and inventory of SMB8J15CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J15CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMB8J15CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J15CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J15CAHE3_B/H?
SMB8J15CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J15CAHE3_B/H 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_B/H?
For technical support, including SMB8J15CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J15CAHE3_B/H requirements.
6.How does Aetrix verify that SMB8J15CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMB8J15CAHE3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of SMB8J15CAHE3_B/H?
All SMB8J15CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J15CAHE3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for SMB8J15CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J15CAHE3_B/H Tags
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