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Vishay General Semiconductor - Diodes Division SMBJ30CAHE3/5B
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- Part No.:
- SMBJ30CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ30CAHE3/5B.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,887
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Product details
Overview
SMBJ30CAHE3/5B 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 or power 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 rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and telecom equipment.
For engineers reviewing the SMBJ30CAHE3/5B datasheet, SMBJ30CAHE3/5B pinout, SMBJ30CAHE3/5B application, or SMBJ30CAHE3/5B equivalent, key selection criteria include bidirectional surge suppression capability, AEC-Q101 qualification status, clamping performance under 10/1000 µs transients, thermal resistance (RθJA = 100 °C/W), and RoHS-compliant matte tin-plated leads suitable for automated SMT placement.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable clamping across temperature (VBR tempco = 0.099 %/°C).
The SMBJ30CAHE3/5B is rated for repetitive 0.01 % duty cycle surges and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It supports operation from –55 °C to +150 °C junction temperature and delivers 5.0 W steady-state power dissipation on infinite heatsink at 50 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 33.3–36.8 V at 1.0 mA - guaranteed conduction onset range; ensures reliable triggering during overvoltage events |
| VC (Clamping Voltage) | 48.4 V at IPPM = 12.4 A - peak voltage seen by protected circuit during 10/1000 µs transient; limits stress on downstream components |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capacity for standardized 10/1000 µs surge; validates robustness against lightning or inductive switching |
| ID (Reverse Leakage) | 1.0 µA max at VWM - minimal standby power loss and signal integrity impact in high-impedance circuits |
| TJ max. | +150 °C - enables use in under-hood automotive or high-temperature industrial environments without derating |
| Package | SMB (DO-214AA) - industry-standard 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, qualified to JESD 201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional operation | Shared node for symmetrical clamping - connects to line being protected without polarity dependency |
| Cathode | Current exit point in forward bias; common terminal in bidirectional operation | Shared node for symmetrical clamping - ties to same protected line as Anode; no functional distinction in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients typical of ISO 7637-2 pulse 1/2a/5a and IEC 61000-4-5 surge events |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot during clamping - critical for protecting 3.3 V or 5 V logic interfaces |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture sensitivity handling requirements |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback signal lines against inductive kickback from BLDC motor commutation. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across gate-source or analog input pins of isolated amplifiers or comparators. Use Value: Limits transient voltage to ≤48.4 V, preventing latch-up or oxide breakdown in 30 V-rated SiC MOSFET drivers and 24 V sensor supply rails. |
Use Scenario: Shielding LIN bus transceivers and pressure/temperature sensor outputs from battery dump and load-dump transients. IC Role / Device Role / Timing Role: Bidirectional shunt protector on differential or single-ended sensor output traces near connector entry points. Use Value: Maintains signal integrity during 12 V system surges up to ±100 V by clamping within 1 ns while drawing <1 µA at 30 V standby. |
| Telecom Power Feeds | Consumer USB-C Port Protection |
Use Scenario: Safeguarding PoE-powered Ethernet PHYs and DC-DC controllers from induced surges on 48 V power pairs. IC Role / Device Role / Timing Role: Secondary-level TVS on secondary-side DC bus after isolation transformer or DC-DC converter. Use Value: Absorbs 600 W surge energy without degradation, enabling compliance with IEC 61000-4-5 Level 4 (4 kV line-earth) when combined with primary-side protection. |
Use Scenario: Overvoltage hardening of USB-C CC and VCONN lines against hot-swap and adapter fault conditions. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on sideband use (SBU) or configuration channel (CC) lines. Use Value: Provides 30 V standoff with 48.4 V clamping - compatible with USB PD 3.0 voltage negotiation while avoiding false disconnects during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA-M3/5B | Same electrical specs; halogen-free, RoHS-compliant variant without AEC-Q101 qualification | Lacks automotive qualification; suitable for commercial/industrial use where AEC-Q101 is not mandated | Select when halogen-free compliance is required but automotive reliability testing is unnecessary |
| SMAJ30CAHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (~150 °C/W) | Reduced surge handling; limited to lower-energy transients or space-constrained PCBs | Choose only if board area is critical and peak surge exposure is below 400 W; verify thermal margin |
Compared with SMBJ30CAHE3/5B, the M3/5B alternative offers identical protection performance without automotive qualification, while the SMAJ30CAHE3/A trades 33 % lower surge power and higher thermal resistance for 30 % smaller footprint - requiring careful layout and thermal validation.
Availability
SMBJ30CAHE3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, and telecom power feeds requiring stable component supply, AEC-Q101 qualification, and repeatable 600 W transient suppression performance.
Supply support for SMBJ30CAHE3/5B 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series targets high-reliability transient suppression in harsh environments, with design focus on automotive, industrial, and telecom systems needing robust, AEC-Q101-qualified, surface-mount TVS solutions.
FAQ
What does the "CA" suffix indicate in SMBJ30CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration, meaning SMBJ30CAHE3/5B provides symmetrical transient voltage suppression in both polarities. This eliminates the need for polarity-aware placement and makes it ideal for AC signal lines, differential buses, or floating power domains where voltage reversals may occur during fault conditions.
Is SMBJ30CAHE3/5B suitable for automotive applications?
Yes - SMBJ30CAHE3/5B carries the HE3 suffix, confirming it is RoHS-compliant and AEC-Q101 qualified. It has passed rigorous automotive reliability tests including temperature cycling, highly accelerated life testing (HALT), and ESD immunity, making it approved for use in engine control units, body electronics, and ADAS sensor modules.
What is the maximum clamping voltage of SMBJ30CAHE3/5B under surge conditions?
The maximum clamping voltage (VC) of SMBJ30CAHE3/5B is 48.4 V at a peak pulse current (IPPM) of 12.4 A with a 10/1000 µs waveform. This value is guaranteed across temperature and represents the highest voltage imposed on the protected circuit during standardized surge events.
How does the SMB (DO-214AA) package of SMBJ30CAHE3/5B compare to SMA (DO-214AC)?
The SMB package used in SMBJ30CAHE3/5B measures 4.06 mm × 5.59 mm, offering 50 % higher power handling than the smaller SMA (DO-214AC) package. Its lower thermal resistance (RθJA = 100 °C/W vs. ~150 °C/W for SMA) supports sustained 600 W surge dissipation without thermal runaway in compact layouts.
Does SMBJ30CAHE3/5B require external heat sinking for standard operation?
No - SMBJ30CAHE3/5B is designed for surface-mount operation without external heatsinking. Its 100 °C/W junction-to-ambient thermal resistance assumes minimum recommended copper pad layout (0.2" × 0.2" per terminal). For repeated surges or elevated ambient temperatures, increasing copper area improves thermal margin but is not mandatory for single-event protection.
SMBJ30CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ30CAHE3/5B FAQ
1.How can I place an order for SMBJ30CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ30CAHE3/5B 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 SMBJ30CAHE3/5B reliable?
The price and inventory of SMBJ30CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ30CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ30CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ30CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ30CAHE3/5B?
SMBJ30CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ30CAHE3/5B 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 SMBJ30CAHE3/5B?
For technical support, including SMBJ30CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ30CAHE3/5B requirements.
6.How does Aetrix verify that SMBJ30CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ30CAHE3/5B 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 SMBJ30CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ30CAHE3/5B?
All SMBJ30CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ30CAHE3/5B, 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 SMBJ30CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ30CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ30CAHE3/5B Tags
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