My Inquiry
My Account
Taiwan Semiconductor Corporation SMBJ150C
- Part No.:
- SMBJ150C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150C.pdf
- Description:
- 600W, 185.5V, 10%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,982
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ150C from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 150V working stand-off voltage (VWM), 167–204V breakdown voltage (VBR), 266V maximum clamping voltage (VC) at 2.3A peak impulse current, and 600W peak pulse power rating with sub-1ps response time - deployed in automotive infotainment power rails to suppress ISO 7637-2 Pulse 1/2a/2b transients.
For engineers reviewing the SMBJ150C datasheet, SMBJ150C pinout, SMBJ150C application, or SMBJ150C equivalent, key selection criteria include bidirectional clamping capability, DO-214AA package compatibility with automated SMT assembly, leakage current ≤1µA at 150V, and compliance with IEC 61000-4-2/4-4/4-5 and ISO 7637-2 immunity standards.
Technical Context
The SMBJ150C implements a planar passivated silicon junction optimized for fast avalanche response under transient overvoltage events. Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating signal paths without polarity dependency.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, supporting continuous operation up to +150°C junction temperature. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 167 / 204 V @ 1 mA - Confirmed breakdown range ensures reliable turn-on margin above VWM |
| VC @ IPP | 266 V @ 2.3 A - Clamping voltage limits downstream IC stress during 10/1000µs surges |
| PPK | 600 W - Peak pulse power handling per single non-repetitive 10/1000µs waveform |
| ID @ VWM | ≤1 µA - Low leakage preserves system standby current in battery-powered applications |
| Response time | <1 ps - Enables suppression of ESD and EFT transients before sensitive circuitry reacts |
| Package | DO-214AA (SMB) - Standardized surface-mount outline compatible with IPC-7351B footprint |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking for unidirectional variants; SMBJ150C is bidirectional and marked with "PL" code - no polarity indicator required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminals | Identical clamping behavior in both directions - no anode/cathode assignment needed in layout |
| Case | Non-electrical mechanical body | UL 94V-0 rated molding compound provides flame resistance and thermal stability |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables use in AC signal lines or floating buses without polarity constraints - eliminates need for dual-device placement |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT coupling) waveforms |
| Sub-1ps response | Clamps ESD events (IEC 61000-4-2) before propagation into microcontroller I/O or CAN transceivers |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - suitable for automotive and industrial green manufacturing |
| J-STD-020 Level 1 | Zero bake requirement prior to reflow - supports standard lead-free solder profiles without moisture-related popcorning |
Applications
| Automotive Power Rail Protection | Industrial Ethernet PHY Protection |
|---|---|
Use Scenario: 12V/24V vehicle battery line exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary surge clamp on power input to ADAS camera module power management IC. Use Value: Limits transient voltage to ≤266V during ISO 7637-2 Pulse 5a (load dump), preventing latch-up or gate oxide damage in buck controller. |
Use Scenario: RJ45 interface on factory-floor PLC with long cable runs susceptible to induced lightning surges. IC Role / Device Role / Timing Role: Secondary-level TVS on MDI differential pair before Ethernet PHY transceiver. Use Value: Clamps common-mode surges to <300V while maintaining signal integrity below 100MHz due to low junction capacitance (~50pF at 0V). |
| LED Driver Output Protection | RS-485 Transceiver Bus Line Protection |
Use Scenario: Constant-current LED string driver output in streetlight control cabinet subject to nearby switching noise. IC Role / Device Role / Timing Role: Bidirectional clamp across LED+ and LED− outputs to suppress inductive kickback from relay-controlled dimming circuits. Use Value: Absorbs 600W pulses without degradation, enabling >100,000 surge cycles per JEDEC JESD22-A114 reliability testing. |
Use Scenario: Two-wire RS-485 bus connecting sensors in oil & gas field instrumentation exposed to EFT bursts. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS on A/B bus terminals upstream of isolated transceiver. Use Value: Meets IEC 61000-4-4 Level 4 (1kV/2.5kHz) immunity with ≤1µA leakage preserving bus bias stability over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ150CA | Same DO-214AC (SMA) package; 255V VC @ 2.5A; slightly lower PPK (400W) | Lower clamping voltage but reduced surge capacity - better for low-energy ESD, less robust for ISO 7637-2 Pulse 5a | Select when board space allows SMA footprint and peak surge energy is ≤400W |
| ON Semiconductor SMCJ150CA | DO-214AB (SMC) package; 274V VC @ 2.2A; identical 600W rating and VWM | Larger footprint increases layout area by ~35% - requires PCB redesign but offers higher thermal mass for repetitive surges | Select when thermal derating for >1Hz surge repetition is required and SMC pad layout is available |
Compared with SMBJ150C, SMAJ150CA trades surge robustness for compact size, while SMCJ150CA retains full 600W capability at the cost of larger board area - SMBJ150C uniquely balances DO-214AA manufacturability, 600W rating, and 266V clamping in a mid-size package.
Availability
SMBJ150C is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial Ethernet PHY interfaces, LED driver outputs, and RS-485 transceiver bus lines requiring stable component supply across multi-year production cycles.
Supply support for SMBJ150C 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, and MOSFETs for industrial and automotive markets.
The SMBJ series was engineered specifically for high-reliability transient suppression in harsh environments - emphasizing ISO 7637-2 compliance, low leakage, and automated assembly readiness in surface-mount packages.
FAQ
What is the clamping voltage of SMBJ150C at its rated peak pulse current?
The SMBJ150C has a maximum clamping voltage (VC) of 266 V when subjected to its specified peak impulse current (IPP) of 2.3 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components experience controlled overvoltage stress during surge events - critical for protecting 3.3V or 5V logic interfaces powered from 150V rails.
Is SMBJ150C unidirectional or bidirectional, and how is polarity indicated?
SMBJ150C is a bidirectional TVS diode, meaning it clamps symmetrically in both forward and reverse directions - no cathode band or polarity marking is present. Its marking code "PL" (per Taiwan Semiconductor's datasheet) confirms bidirectional configuration, eliminating orientation concerns during automated placement and simplifying layout for AC-coupled or floating signal paths.
Does SMBJ150C meet automotive transient immunity standards?
Yes, SMBJ150C is explicitly validated to meet ISO 7637-2 test pulses including Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (electrical fast transients). Its 600W peak pulse rating and 266V clamping voltage ensure compliance with OEM requirements for 12V and 24V vehicle electrical systems - confirmed in Taiwan Semiconductor's R2104 datasheet revision.
What is the maximum junction temperature and thermal resistance of SMBJ150C?
The SMBJ150C has a maximum junction temperature (TJ) of +150°C and thermal resistances of RθJC = 10°C/W (junction-to-case) and RθJA = 55°C/W (junction-to-ambient). These values enable reliable operation in under-hood automotive environments and enclosed industrial enclosures - provided PCB copper area meets minimum pad recommendations in the DO-214AA footprint guidelines.
How does SMBJ150C differ from SMBJ150A in terms of electrical performance?
SMBJ150C is bidirectional with symmetrical clamping, while SMBJ150A is unidirectional and includes a cathode band. Electrically, SMBJ150C has VBR = 167–204 V and VC = 266 V, whereas SMBJ150A has tighter VBR = 167–185 V and lower VC = 243 V. The "C" suffix denotes bipolar capability - essential for AC signal protection where polarity reversal occurs, unlike the "A" variant used only in DC rail clamping.
SMBJ150C 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ150C FAQ
1.How can I place an order for SMBJ150C through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150C 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 SMBJ150C reliable?
The price and inventory of SMBJ150C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150C is usually 5 days.
3.What payment methods are accepted for SMBJ150C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150C?
SMBJ150C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150C 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 SMBJ150C?
For technical support, including SMBJ150C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150C requirements.
6.How does Aetrix verify that SMBJ150C is sourced from the original manufacturer or authorized distributors?
All SMBJ150C 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 SMBJ150C meets industry standards.
7.What is the process for return or replacement of SMBJ150C?
All SMBJ150C units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150C, 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 SMBJ150C part is unused and in its original packaging.
Return procedure for SMBJ150C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150C Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
