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Vishay General Semiconductor - Diodes Division SMBJ30CAHE3_B/H
- Part No.:
- SMBJ30CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ30CAHE3_B/H.pdf
- Description:
- 600W,30V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,009
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Product details
Overview
SMBJ30CAHE3_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 power and signal lines. It features a 30 V stand-off voltage (VWM), 48.4 V maximum clamping voltage at 12.4 A peak pulse current (IPPM), and 600 W peak pulse power capability with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SMBJ30CAHE3_B/H datasheet, SMBJ30CAHE3_B/H pinout, SMBJ30CAHE3_B/H application, or SMBJ30CAHE3_B/H equivalent, this device is selected for robust bidirectional surge protection where low clamping voltage, AEC-Q101 qualification, and MSL Level 1 solderability are required in automotive and industrial control designs.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified between 33.3 V and 36.8 V at 1.0 mA test current. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of transient energy before sensitive downstream components experience overvoltage stress.
The device is rated for 150 °C maximum junction temperature, exhibits ±0.099 %/°C temperature coefficient of VBR, and meets UL 497B recognition for protector classification under file E136766 - confirming suitability for safety-critical surge protection in certified end equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR min/max | 33.3 V / 36.8 V at 1.0 mA - ensures reliable turn-on within tight tolerance during transient events. |
| VC @ IPPM | 48.4 V at 12.4 A - clamping voltage limits downstream component stress during worst-case 600 W surge. |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform supports IEC 61000-4-5 Level 4 compliance. |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on sensor circuits. |
| TJ max | +150 °C - enables operation in under-hood automotive and high-temperature industrial environments. |
| MSL Level | Level 1 per J-STD-020 - allows unlimited floor life and reflow up to 260 °C peak without preconditioning. |
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, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; symmetrical with cathode for bidirectional operation. |
| Cathode | Transient current entry (positive polarity) | Accepts forward surge current during positive transients; identical electrical behavior to anode due to bidirectional design. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control and ADAS power rails. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV/2 Ω without degradation. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V/5 V logic interfacing with 24 V supply domains. |
| UL 497B recognized | Approved for use in telecom and industrial safety-certified equipment under file E136766. |
| MSL Level 1 | Enables direct placement into high-temperature lead-free reflow without baking or special handling. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V CAN bus power inputs and LIN transceiver supplies from load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed upstream of DC-DC converters and interface ICs. Use Value: Limits voltage to ≤48.4 V during 12.4 A surges, preventing latch-up or permanent damage to automotive-grade microcontrollers. |
Use Scenario: Shielding analog outputs and digital I/O of pressure/temperature sensors in PLC modules from field wiring surges. IC Role / Device Role / Timing Role: Primary transient shunt across sensor supply and ground pins. Use Value: Sub-1 ns response ensures clamping occurs before 3.3 V ADC reference or op-amp input stages exceed absolute maximum ratings. |
| Telecom Line Card Surge Suppression | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Guarding Ethernet PHY power rails and RS-485 transceivers against lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Secondary-level TVS in cascade with gas discharge tubes (GDTs) for coordinated protection. Use Value: 600 W rating handles residual energy after GDT crowbarring, maintaining system uptime during Category A/B surge events. |
Use Scenario: Safeguarding MCU GPIOs and gate drivers controlling BLDC motors in washing machines and HVAC fans. IC Role / Device Role / Timing Role: Localized TVS at motor driver IC supply pins and feedback signal paths. Use Value: 1.0 µA leakage avoids false triggering of zero-cross detection circuits while clamping commutation spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VC/IPPM specs, identical SMB package. | Lacks automotive qualification; not approved for under-hood or safety-critical vehicle subsystems. | Select when cost sensitivity outweighs automotive qualification requirements and ambient temperature stays below 125 °C. |
| SMCJ30CAHE3_A/H | Same VWM/VC but higher 1500 W PPPM rating in larger SMC (DO-214AB) package; 2× footprint area. | Used where higher surge energy absorption is needed (e.g., AC mains input stages), requiring PCB layout change. | Choose only if system-level surge testing exceeds 600 W - otherwise SMBJ30CAHE3_B/H offers optimal space-efficiency. |
Compared with SMBJ30CA-E3/52, SMBJ30CAHE3_B/H adds AEC-Q101 qualification and extended temperature capability; compared with SMCJ30CAHE3_A/H, it trades surge capacity for compact SMB footprint - making SMBJ30CAHE3_B/H the preferred choice for space-constrained automotive and industrial PCBs needing certified reliability.
Availability
SMBJ30CAHE3_B/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor modules, and telecom line card designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ30CAHE3_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, MOSFETs, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial automation, and infrastructure equipment where surge immunity and qualification compliance are mandatory.
FAQ
What does the "CA" suffix indicate in SMBJ30CAHE3_B/H?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ30CAHE3_B/H provides symmetrical clamping for both positive and negative voltage transients. Unlike unidirectional variants (e.g., SMBJ30A), it has no polarity marking and functions identically regardless of voltage polarity applied across its terminals, making it ideal for AC-coupled or floating signal lines.
Is SMBJ30CAHE3_B/H suitable for automotive applications?
Yes - SMBJ30CAHE3_B/H is AEC-Q101 qualified and carries the "HE3" suffix indicating RoHS-compliant, automotive-grade construction. It is rated for -55 °C to +150 °C operation and validated for temperature cycling, highly accelerated life testing, and ESD robustness - meeting requirements for engine control units, body electronics, and ADAS power domains.
What is the clamping voltage of SMBJ30CAHE3_B/H at its rated peak pulse current?
The maximum clamping voltage (VC) of SMBJ30CAHE3_B/H is 48.4 V at 12.4 A peak pulse current (IPPM), measured using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events and is critical for ensuring downstream components remain within their absolute maximum ratings.
How does SMBJ30CAHE3_B/H differ from SMBJ30AHE3_B/H?
SMBJ30CAHE3_B/H is bidirectional with symmetrical VBR and VC characteristics, while SMBJ30AHE3_B/H is unidirectional and features a cathode band marking. The unidirectional version supports only positive transients relative to cathode and has different leakage behavior - SMBJ30CAHE3_B/H is selected when protection is required for both polarities without polarity constraints.
What packaging and reel options are available for SMBJ30CAHE3_B/H?
SMBJ30CAHE3_B/H ships in 7-inch plastic tape-and-reel format with 750 units per reel (package code "H"). It uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets JESD 201 Class 2 whisker resistance - supporting automated SMT placement and lead-free reflow up to 260 °C peak temperature.
SMBJ30CAHE3_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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 12.4A
- 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)
SMBJ30CAHE3_B/H FAQ
1.How can I place an order for SMBJ30CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ30CAHE3_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 SMBJ30CAHE3_B/H reliable?
The price and inventory of SMBJ30CAHE3_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 SMBJ30CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ30CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ30CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ30CAHE3_B/H?
SMBJ30CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ30CAHE3_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 SMBJ30CAHE3_B/H?
For technical support, including SMBJ30CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ30CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ30CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ30CAHE3_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 SMBJ30CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ30CAHE3_B/H?
All SMBJ30CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ30CAHE3_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 SMBJ30CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ30CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ30CAHE3_B/H Tags
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