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Vishay General Semiconductor - Diodes Division SMBJ150CAHE3/5B
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- Part No.:
- SMBJ150CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150CAHE3/5B.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,887
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Product details
Overview
SMBJ150CAHE3/5B 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 power and signal lines. It features a 150 V standoff voltage (VWM), 167–185 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤243 V at 2.5 A peak surge current - used in industrial sensor interface protection and telecom power rail surge suppression.
For engineers reviewing the SMBJ150CAHE3/5B datasheet, SMBJ150CAHE3/5B pinout, SMBJ150CAHE3/5B application, or SMBJ150CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and compliance with UL 497B for protector classification.
Technical Context
This TVS diode operates as a voltage-clamping device across bidirectional signal or DC power paths, responding within <1 ps to transient overvoltages induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the SMB package supports automated placement and meets MSL Level 1 reflow requirements (peak 260 °C).
The SMBJ150CAHE3/5B is rated for 600 W peak pulse power under 10/1000 µs waveform with 0.01% duty cycle, and exhibits a maximum clamping voltage of 243 V at 2.5 A IPPM - enabling robust protection of downstream MOSFETs, ICs, and analog front-ends without crowbar action or latch-up risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - Maximum continuous reverse operating voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 167–185 V at 1 mA - Confirmed minimum/maximum breakdown range ensuring predictable turn-on during transients. |
| VC (Clamping Voltage) | ≤243 V at IPPM = 2.5 A - Measured peak voltage across device during 10/1000 µs surge; determines maximum stress imposed on protected circuitry. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capacity under standardized 10/1000 µs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID (Max Reverse Leakage) | ≤1.0 µA at VWM - Negligible standby current draw; avoids loading sensitive high-impedance nodes like sensor bias lines. |
| TJmax | +150 °C - Maximum junction temperature rating; supports operation in enclosed industrial enclosures or automotive under-hood environments. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs derating requirements above 25 °C ambient. |
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, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current from either direction; connects to line being protected (e.g., RS-485 A/B or DC+ rail). |
| Cathode | Transient current exit point (bidirectional) | Completes clamping path to reference plane (e.g., GND or DC–); symmetric conduction eliminates need for orientation awareness. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for ADAS camera modules and infotainment power rails. |
| 600 W peak pulse power (10/1000 µs) | Withstands repetitive surge events per IEC 61000-4-5 up to Level 4 (4 kV line-to-ground), reducing need for upstream fusing or redundancy. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sub-5 V logic interfaces. |
| UL 497B recognized (QVGQ2) | Approved for use in telecommunications and industrial equipment requiring certified surge protection components without additional system-level certification burden. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without pre-baking or special handling - reduces manufacturing complexity. |
Applications
| Industrial Sensor Interface Protection | Telecom DC Power Rail Protection |
|---|---|
|
Use Scenario: Protecting 4–20 mA current-loop transmitters and RS-485 fieldbus nodes from lightning-induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply/GND rails to limit transient voltage excursion. Use Value: Prevents damage to isolated ADCs, digital isolators, and bus transceivers by clamping to ≤243 V while maintaining <1 µA leakage at 150 V nominal rail. |
Use Scenario: Safeguarding -48 V DC telecom power distribution boards against load dump and coupling surges in central office equipment. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at board edge input, shunting transient energy directly to chassis ground. Use Value: Delivers 600 W pulse handling without degradation over 1000+ surge events, supporting long-lifecycle deployment in carrier-grade infrastructure. |
| Automotive Body Control Module (BCM) | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Protecting LIN bus and switched 12 V loads (e.g., door lock actuators) from battery dump and alternator ripple in passenger vehicles. IC Role / Device Role / Timing Role: AEC-Q101-qualified TVS placed between microcontroller GPIO and external connector pins. Use Value: Ensures functional safety compliance (ISO 11898-2) by limiting transient voltage to <243 V during 100 V/50 ms load dump tests. |
Use Scenario: Shielding BLDC motor driver ICs and gate drivers from back-EMF spikes generated during commutation in smart home appliances. IC Role / Device Role / Timing Role: Low-leakage bidirectional suppressor across half-bridge supply rails (e.g., VDD/GND) near power stage. Use Value: Maintains <1 µA leakage at 150 V standoff, avoiding unnecessary power loss in always-on standby circuits while clamping 600 W surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA-M3/5B | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | No difference in circuit function or layout; selected where halogen-free material compliance is mandated (e.g., EU public infrastructure projects). | Direct drop-in replacement when halogen-free content is required; no design or layout changes needed. |
| SMCJ150CAHE3/5B | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher PPPM = 1500 W; RθJA = 50 °C/W. | Used where higher surge energy absorption or improved thermal dissipation is required - e.g., outdoor power supplies or EV charging stations. | Select when system-level surge testing exceeds 600 W; requires PCB pad revision due to larger 7.11 mm × 6.22 mm footprint. |
Compared with SMBJ150CAHE3/5B, the M3/5B offers identical performance with halogen-free construction, while the SMCJ150CAHE3/5B provides 2.5× higher pulse power at the cost of increased board area and thermal redesign - making SMBJ150CAHE3/5B optimal for space-constrained, AEC-Q101-compliant industrial and automotive PCBs.
Availability
SMBJ150CAHE3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom power rails, automotive body control modules, and consumer appliance motor drives requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBJ150CAHE3/5B 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was developed for high-reliability transient suppression in compact surface-mount designs - targeting automotive, industrial, and telecom systems where space, thermal performance, and qualification rigor are critical.
FAQ
What is the clamping voltage of SMBJ150CAHE3/5B at its rated peak pulse current?
The SMBJ150CAHE3/5B has a maximum clamping voltage (VC) of 243 V when subjected to its specified peak pulse current of 2.5 A under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMBJ150CAHE3/5B suitable for automotive applications?
Yes, SMBJ150CAHE3/5B is AEC-Q101 qualified, meaning it has passed stress tests including temperature cycling, high-temperature reverse bias, and ESD per automotive reliability standards. Its –55 °C to +150 °C operating range, robust surge handling, and UL 497B recognition make SMBJ150CAHE3/5B appropriate for body control modules, infotainment power inputs, and LIN bus protection in passenger vehicles.
How does the bidirectional configuration of SMBJ150CAHE3/5B affect circuit design?
The bidirectional configuration of SMBJ150CAHE3/5B allows symmetrical clamping across AC-coupled signals or floating DC rails without polarity sensitivity - eliminating orientation constraints during placement. Unlike unidirectional TVS diodes, SMBJ150CAHE3/5B conducts equally in both directions above VBR, making it ideal for differential interfaces (e.g., RS-485) and dual-rail protection where ground-referenced clamping is impractical.
What is the thermal resistance of SMBJ150CAHE3/5B, and how does it impact layout?
SMBJ150CAHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimal copper area; increasing pad size or adding thermal vias reduces effective RθJA. Layout must allocate sufficient copper to maintain TJ ≤ 150 °C under worst-case surge repetition rates - especially important in enclosed industrial enclosures.
Does SMBJ150CAHE3/5B meet UL safety standards?
Yes, SMBJ150CAHE3/5B is Underwriters Laboratories (UL) recognized under file E136766 for protector classification per UL 497B, covering both unidirectional and bidirectional TVS devices. This certification validates its suitability for use in telecom, industrial, and consumer equipment requiring third-party safety approval - eliminating need for system-level retesting when used per manufacturer's mounting guidelines.
SMBJ150CAHE3/5B 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):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
SMBJ150CAHE3/5B FAQ
1.How can I place an order for SMBJ150CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150CAHE3/5B 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 SMBJ150CAHE3/5B reliable?
The price and inventory of SMBJ150CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ150CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150CAHE3/5B?
SMBJ150CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150CAHE3/5B 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 SMBJ150CAHE3/5B?
For technical support, including SMBJ150CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150CAHE3/5B requirements.
6.How does Aetrix verify that SMBJ150CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ150CAHE3/5B 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 SMBJ150CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ150CAHE3/5B?
All SMBJ150CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150CAHE3/5B, 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 SMBJ150CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ150CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150CAHE3/5B Tags
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