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Taiwan Semiconductor Corporation SMBJ150
- Part No.:
- SMBJ150
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150.pdf
- Description:
- 600W, 185.5V, 10%, UNIDIRECTIONA
- Quantity:
- Payment:
- Shipping:
Inventory:6,265
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Product details
Overview
SMBJ150 from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection in DC power rails and signal lines. It features a 150V working stand-off voltage (VWM), 167–204V breakdown voltage (VBR @ 1mA), 266V maximum clamping voltage (VC @ 2.3A), and sub-1ps response time - ideal for automotive load-dump and ISO 7637-2 Pulse 5a compliance.
For engineers reviewing the SMBJ150 datasheet, SMBJ150 pinout, SMBJ150 application, or SMBJ150 equivalent, key selection criteria include clamping performance under 10/1000µs surges, leakage current at 150V (<1µA), thermal derating above 25°C, and compatibility with automated SMT placement on industrial control and automotive ECUs.
Technical Context
The SMBJ150 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its VBR range (167–204V). Its glass-passivated junction ensures stable breakdown and low leakage (<1µA at VWM = 150V), while the DO-214AA package provides 10°C/W junction-to-case thermal resistance for reliable power dissipation during transient events.
It meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b immunity requirements and is rated for TJ = –55°C to +150°C operation. The device sustains non-repetitive peak impulse power of 600W (10/1000µs waveform) and supports steady-state power dissipation up to 3W at 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR min/max | 167 / 204 V @ 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on under surge conditions. |
| VC @ IPP | 266 V @ 2.3 A - Clamped voltage during 10/1000µs surge; determines protected circuit's maximum overvoltage exposure. |
| PPK | 600 W - Peak pulse power rating; enables robust handling of automotive load-dump transients per ISO 7637-2. |
| ID @ VWM | <1 µA - Ultra-low leakage at rated stand-off; prevents system power loss and false triggering in high-impedance circuits. |
| Response time | <1 ps - Sub-picosecond avalanche response; ensures protection before sensitive ICs experience overvoltage stress. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
Pinout & Package
DO-214AA (SMB) surface-mount package: cathode-banded end denotes the cathode terminal; anode is the unbanded end. Matte tin-plated leads comply with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Weight: 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; completes clamping path during reverse surge. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 12V/24V rail); conducts when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling). |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking; eliminates moisture-related popcorning risk during assembly. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives; suitable for environmentally regulated automotive and industrial programs. |
| Automated placement compatible | DO-214AA footprint and marking code "PL" support high-speed pick-and-place with optical recognition. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24V supply lines in engine control units (ECUs) against load-dump transients up to 35V for 400ms. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC converter input. Use Value: Limits peak voltage to ≤266V during ISO 7637-2 Pulse 5a, preventing damage to downstream regulators and microcontrollers. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to inductive switching noise from solenoids and relays. IC Role / Device Role / Timing Role: Standoff protection device on 24V sensor input lines, shunting fast EFT bursts (IEC 61000-4-4). Use Value: Clamps 4kV EFT pulses to <266V within <1ps, preserving signal integrity and avoiding false logic transitions. |
| LED Driver Overvoltage Suppression | Telecom DC Feeder Line Protection |
Use Scenario: Securing constant-current LED drivers in street lighting systems against lightning-induced surges on 120–277V AC/DC outputs. IC Role / Device Role / Timing Role: Secondary-side TVS on output rail, parallel to load, triggered by overvoltage exceeding 150V. Use Value: Absorbs 600W transient energy without degradation, maintaining driver uptime and reducing field failure rates. |
Use Scenario: Protecting PoE-powered equipment connected to telecom central office feeder lines subject to induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48V DC feed line upstream of PD controller and isolation transformer. Use Value: Provides <1µA leakage at 150V, minimizing standby power loss while meeting GR-1089-CORE Level 3 surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | Narrower VBR range (167–185V vs. 167–204V); lower clamping voltage (243V vs. 266V at 2.5A). | Better suited for tighter voltage margin designs where lower VC improves system safety margin. | Select SMBJ150A if clamping voltage headroom is critical and VBR consistency across production lots is prioritized. |
| SMCJ150 | Larger DO-214AB (SMC) package; higher PPK (1500W); same VWM/VBR/VC specs but higher thermal mass. | Used where higher surge repetition rate or longer duration transients require greater thermal endurance. | Choose SMCJ150 only if board space allows larger footprint and 1500W rating is required beyond single-event 600W needs. |
Compared with SMBJ150A, the SMBJ150 offers wider VBR tolerance and higher clamping voltage - advantageous for cost-sensitive, high-volume automotive modules where margin to system overvoltage thresholds is generous. Against SMCJ150, SMBJ150 trades surge capacity for compactness and lower assembly cost in space-constrained PCB layouts.
Availability
SMBJ150 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, LED drivers, and telecom power interfaces requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMBJ150 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The SMBJ series was developed specifically for high-reliability, surface-mount surge protection in automotive and industrial environments - emphasizing ISO 7637-2 compliance, automated assembly readiness, and extended temperature operation.
FAQ
What is the maximum clamping voltage of SMBJ150 under a 10/1000µs surge?
The SMBJ150 has a maximum clamping voltage (VC) of 266 V when subjected to a 10/1000µs waveform at a peak impulse current (IPP) of 2.3 A. This value is measured per ANSI/IEEE C62.35 and confirmed in Taiwan Semiconductor's R2104 datasheet, ensuring predictable overvoltage limiting for downstream components in the protected circuit.
Is SMBJ150 unidirectional or bidirectional?
SMBJ150 is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix and confirmed by its single cathode band marking ("PL"). It clamps only during reverse-biased overvoltage events and conducts forward current up to 100 A (IFSM), unlike bidirectional variants such as SMBJ150C which protect both polarities.
Does SMBJ150 meet automotive surge immunity standards?
Yes, SMBJ150 meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for electrical disturbances in road vehicles. Its 600W peak pulse power rating, 266V clamping, and –55°C to +150°C operating range make it suitable for 12V/24V automotive power rail protection in ECUs, body control modules, and ADAS sensors.
What is the leakage current specification for SMBJ150 at its working voltage?
At its working stand-off voltage (VWM) of 150 V, the SMBJ150 exhibits a maximum blocking leakage current (ID) of 1 µA at 25°C. This ultra-low leakage ensures minimal power drain in always-on automotive and industrial systems, preserving battery life and avoiding false triggers in high-impedance monitoring circuits.
What package type does SMBJ150 use, and is it compatible with standard SMT processes?
SMBJ150 uses the DO-214AA (SMB) surface-mount package with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Its moisture sensitivity level (MSL) is Level 1, enabling direct placement into reflow ovens without pre-baking - fully compatible with high-volume automated SMT assembly lines.
SMBJ150 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 266V
- Current - Peak Pulse (10/1000µs):
- 2.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ150 FAQ
1.How can I place an order for SMBJ150 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150 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 SMBJ150 reliable?
The price and inventory of SMBJ150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150 is usually 5 days.
3.What payment methods are accepted for SMBJ150?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150?
SMBJ150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150 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 SMBJ150?
For technical support, including SMBJ150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150 requirements.
6.How does Aetrix verify that SMBJ150 is sourced from the original manufacturer or authorized distributors?
All SMBJ150 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 SMBJ150 meets industry standards.
7.What is the process for return or replacement of SMBJ150?
All SMBJ150 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150, 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 SMBJ150 part is unused and in its original packaging.
Return procedure for SMBJ150:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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