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Vishay General Semiconductor - Diodes Division SMBJ14CAHE3_B/H
- Part No.:
- SMBJ14CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14CAHE3_B/H.pdf
- Description:
- 600W,14V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,324
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Product details
Overview
SMBJ14CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 14 V stand-off voltage (VWM), 23.2 V maximum clamping voltage (VC) at 25.9 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), making it suitable for protecting MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ14CAHE3_B/H datasheet, SMBJ14CAHE3_B/H pinout, SMBJ14CAHE3_B/H application, or SMBJ14CAHE3_B/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), low leakage (<1.0 µA at VWM), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped surge protector using an avalanche breakdown mechanism. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity sensitivity, and its glass-passivated junction ensures stable breakdown characteristics over temperature and lifetime.
The SMBJ14CAHE3_B/H delivers consistent clamping performance under repetitive 10/1000 µs transients at 0.01% duty cycle, with thermal derating defined per Figure 2 and validated for operation from –55 °C to +150 °C junction temperature. It meets UL 497B recognition (QVGQ2) and J-STD-020 MSL Level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin for protected line. |
| VBR min/max | 15.6 V / 17.2 V at 1.0 mA - Verified breakdown threshold range ensures reliable turn-on during overvoltage events. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage seen by downstream circuitry during 600 W transient; limits stress on sensitive components. |
| IPPM | 25.9 A - Peak surge current handled with 10/1000 µs waveform; determines minimum trace width and PCB copper area required. |
| PPPM | 600 W - Peak pulse power rating; defines energy absorption capacity for lightning-induced or inductive-switching surges. |
| ID @ VWM | <1.0 µA - Reverse leakage at stand-off voltage; critical for low-power sensor or battery-backed circuits. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in high-ambient industrial environments with minimal heatsinking. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current from either direction; connects to line under protection (e.g., RS-485 A/B, USB D+/D–, or DC bus). |
| Cathode | Transient current exit point (bidirectional) | Completes surge path to ground or return rail; symmetric with Anode in bidirectional operation-no functional distinction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in ADAS and body control modules. |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive load switching or lightning surges without degradation across >1000 pulses. |
| Low clamping ratio (VC/VBR ≈ 1.48) | Minimizes overvoltage overshoot during clamping-critical for safeguarding 3.3 V or 5 V logic interfaces. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak-eliminates baking requirements in production. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage over 10+ years in harsh environments (humidity, thermal cycling). |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protecting gate drivers and feedback signal lines in variable-frequency drives exposed to inductive kickback from 3-phase motors. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient spikes on PWM gate traces and analog current-sense outputs. Use Value: Prevents latch-up or permanent damage to isolated gate drivers (e.g., Si823x) and delta-sigma ADCs during motor stall or short-circuit events. |
Use Scenario: Shielding LIN bus transceivers and MEMS pressure sensor outputs in engine bay modules subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Fast-response voltage clamp on bidirectional LIN data line and unidirectional sensor supply rail. Use Value: Maintains communication integrity during 12 V system transients up to ±100 V/50 ms while preserving <1 µA standby leakage. |
| Telecom Power Supply Input | Consumer USB-C Port Protection |
|
Use Scenario: Safeguarding primary-side controller ICs and bulk capacitors in AC/DC adapters against lightning-induced surges on 48 V PoE or mains-derived rails. IC Role / Device Role / Timing Role: First-stage clamping device placed upstream of input rectifier and fuse, absorbing energy before downstream filtering. Use Value: Limits peak voltage to ≤23.2 V during 600 W surges-prevents overvoltage failure of 30 V-rated MOSFETs and controllers. |
Use Scenario: Protecting USB-C CC logic and VBUS detection circuitry in portable chargers and docks from ESD and hot-plug transients. IC Role / Device Role / Timing Role: Bidirectional clamp on CC1/CC2 lines and VBUS sense path, co-located with ESD diodes. Use Value: Provides sub-100 ns response and <23.2 V clamping to meet USB-IF compliance for 20 V VBUS operation and 15 kV contact ESD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14CA-E3/52 | Commercial-grade (non-AEC-Q101), same electrical specs and SMB package; RoHS-compliant but not automotive-qualified. | Limited to non-automotive industrial or consumer use where qualification is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and lifecycle assurance. |
| SMCJ14CAHE3_A/H | Same AEC-Q101 qualification and bidirectional function, but in larger SMC (DO-214AB) package with 1500 W PPPM. | Used where higher surge margin is needed (e.g., outdoor telecom cabinets), requiring larger PCB footprint and thermal mass. | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and 600 W is insufficient. |
Compared with SMBJ14CAHE3_B/H, SMBJ14CA-E3/52 offers identical clamping performance at lower cost but lacks automotive qualification, while SMCJ14CAHE3_A/H provides 2.5× higher surge power in a larger footprint-making SMBJ14CAHE3_B/H optimal for space-constrained AEC-Q101 designs needing precise 600 W capability.
Availability
SMBJ14CAHE3_B/H is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, telecom power supply input, and consumer USB-C port protection requiring stable component supply and long-term manufacturing continuity.
Supply support for SMBJ14CAHE3_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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was developed to deliver high-power, low-profile transient protection for automotive, industrial, and telecom systems where AEC-Q101 compliance, tight VBR tolerance, and automated assembly are mandatory.
FAQ
What is the clamping voltage of SMBJ14CAHE3_B/H at its rated peak pulse current?
The SMBJ14CAHE3_B/H has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current (IPPM) of 25.9 A, measured under the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Vishay datasheet Document Number 88392, page 2.
Is SMBJ14CAHE3_B/H suitable for automotive applications?
Yes, SMBJ14CAHE3_B/H is AEC-Q101 qualified, as indicated by the "HE3" suffix and confirmed in the ordering information table (page 3) and thermal characteristics note (page 3) of the Vishay datasheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD-making SMBJ14CAHE3_B/H appropriate for under-hood and chassis-mounted automotive modules.
What does the "CA" suffix mean in SMBJ14CAHE3_B/H?
The "CA" suffix in SMBJ14CAHE3_B/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both polarities-ideal for AC signal lines, differential buses (e.g., RS-485), or unmarked PCB traces. Unlike unidirectional variants (e.g., SMBJ14A), SMBJ14CAHE3_B/H has no cathode band marking and exhibits identical VBR, VC, and IPPM in either direction.
What is the maximum operating temperature for SMBJ14CAHE3_B/H?
The SMBJ14CAHE3_B/H has a maximum operating junction temperature (TJ) of +150 °C and a storage temperature range of –55 °C to +150 °C, as specified in the "Maximum Ratings" table (page 1) of the Vishay datasheet. This allows reliable operation in high-ambient environments such as industrial motor drives or automotive engine control units without additional heatsinking.
How does the SMBJ14CAHE3_B/H compare to SMAJ14CA in terms of power handling?
SMBJ14CAHE3_B/H delivers 600 W peak pulse power (10/1000 µs), whereas SMAJ14CA is rated for 400 W in the same waveform. The higher power rating of SMBJ14CAHE3_B/H stems from its larger SMB (DO-214AA) package versus the smaller SMA (DO-214AC), enabling greater thermal mass and surge energy absorption-critical for applications exposed to repeated or high-amplitude transients.
SMBJ14CAHE3_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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 25.9A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ14CAHE3_B/H FAQ
1.How can I place an order for SMBJ14CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14CAHE3_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 SMBJ14CAHE3_B/H reliable?
The price and inventory of SMBJ14CAHE3_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 SMBJ14CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ14CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14CAHE3_B/H?
SMBJ14CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14CAHE3_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 SMBJ14CAHE3_B/H?
For technical support, including SMBJ14CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ14CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ14CAHE3_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 SMBJ14CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ14CAHE3_B/H?
All SMBJ14CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14CAHE3_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 SMBJ14CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ14CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14CAHE3_B/H Tags
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