My Inquiry
My Account
Taiwan Semiconductor Corporation SMBJ150H
- Part No.:
- SMBJ150H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150H.pdf
- Description:
- 600W, 185.5V, 10%, UNIDIRECTIONA
- Quantity:
- Payment:
- Shipping:
Inventory:4,901
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ150H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a 150 V working stand-off voltage (VWM), 167–204 V breakdown voltage (VBR), 266 V maximum clamping voltage (VC) at 2.3 A peak pulse current (IPP), and 600 W peak pulse power rating with <1.0 ps response time. It is used to protect CAN, LIN, and 12/24 V supply lines against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ150H datasheet, SMBJ150H pinout, SMBJ150H application, or SMBJ150H equivalent, key selection considerations include its DO-214AA (SMB) package compatibility, unidirectional polarity marking, 150°C junction temperature rating, and compliance with AEC-Q101 and ISO 7637-2 for automotive-grade robustness.
Technical Context
The SMBJ150H operates as a unidirectional avalanche diode, clamping overvoltage transients by entering breakdown when reverse voltage exceeds VBR (167–204 V). Its glass-passivated junction ensures stable leakage (<1 µA at 150 V) and long-term reliability under repeated surge stress.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, enabling effective heat dissipation in compact PCB layouts. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, supporting lead-free reflow assembly without popcorn risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin. |
| VBR @ IT=1 mA | 167–204 V - Breakdown voltage range at 1 mA test current; ensures consistent turn-on threshold across production lots. |
| VC @ IPP=2.3 A | 266 V - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure. |
| PPK | 600 W - Peak pulse power handling per 10/1000 µs waveform; supports high-energy automotive load dump immunity. |
| ID @ VWM | <1 µA - Reverse leakage at rated stand-off voltage; minimizes standby power loss in always-on systems. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with cathode band marking; compatible with automated pick-and-place. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band on one end. Weight ≈ 0.090 g. UL 94V-0 flammability rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path; carries forward surge current only in unidirectional configuration. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including temperature cycling, HTRB, and surge endurance per stress test plan. |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) without degradation. |
| Glass passivated junction | Enhances long-term stability of VBR and leakage under thermal/humidity stress; eliminates metallization migration risk. |
| Fast response time | <1.0 ps - Enables clamping before sensitive downstream ICs (e.g., microcontrollers, transceivers) experience damaging overvoltage. |
| Moisture sensitivity level 1 | No baking required prior to reflow; supports standard SMT assembly without moisture-related delamination risk. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, acting as last-line clamping element upstream of DC-DC converters and LDOs. Use Value: Limits transient voltage to ≤266 V during 600 W surges, preventing latch-up or gate oxide rupture in downstream PMICs and microcontrollers. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) connected to PLC I/O modules exposed to EFT and surge noise in factory automation. IC Role / Device Role / Timing Role: Standoff protection device mounted at connector entry point, shunting fast transients before signal conditioning amplifiers. Use Value: Sub-µA leakage at 150 V ensures no loading of high-impedance sensor bridges; 266 V clamping preserves ADC front-end integrity during 1 kV EFT bursts. |
| LED Lighting Driver Protection | Automotive CAN Transceiver Protection |
Use Scenario: Shielding constant-current LED drivers in headlamp and interior lighting from ignition-induced spikes and electrostatic discharge. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver input terminals, absorbing repetitive 10/1000 µs pulses generated by inductive ballast switching. Use Value: 600 W peak power rating sustains >100,000 surge cycles per JESD22-A114; DO-214AA footprint allows placement adjacent to high-current traces. |
Use Scenario: Adding secondary-level surge immunity to high-speed CAN FD networks in ADAS domain controllers and gateway ECUs. IC Role / Device Role / Timing Role: Unidirectional clamp on CAN_H line referenced to ground, complementing integrated bus protection in transceivers like TCAN1042. Use Value: 266 V clamping voltage prevents common-mode overvoltage from exceeding CAN transceiver absolute maximum ratings (e.g., ±40 V common-mode limit). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | Lower VBR range (167–185 V) and lower VC (243 V at 2.5 A); same DO-214AA package and 600 W rating. | Better suited for tighter clamping tolerance requirements where lower VC reduces stress on downstream components. | Select SMBJ150A if design requires lower clamping voltage and can accept reduced breakdown margin. |
| SMCJ150H | Same VWM/VBR/VC specs but in larger DO-214AB (SMC) package; higher thermal mass and RθJA = 35 °C/W. | Preferred for high-temperature ambient environments (>105 °C) or where board space permits larger footprint for improved thermal derating. | Choose SMCJ150H when thermal performance under sustained surge duty cycle is critical and PCB layout allows SMC size. |
Compared with SMBJ150H, SMBJ150A offers tighter clamping at the cost of reduced breakdown voltage margin, while SMCJ150H trades smaller footprint for superior thermal dissipation-enabling longer surge duration handling in thermally constrained automotive modules.
Availability
SMBJ150H is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and LED lighting applications requiring stable component supply with AEC-Q101 qualification and ISO 7637-2 compliance.
Supply support for SMBJ150H 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The SMBJH series was developed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments, emphasizing robustness against ISO 7637-2 pulses and high-reliability packaging for under-hood deployment.
FAQ
What is the polarity configuration of SMBJ150H?
SMBJ150H is a unidirectional TVS diode, with cathode marked by a band on the DO-214AA package body. It conducts in reverse bias during overvoltage events and blocks forward current up to 3.5 V at 50 A. This polarity must be observed during PCB layout to ensure correct clamping orientation on positive-rail protection applications.
Does SMBJ150H meet automotive qualification standards?
Yes, SMBJ150H is AEC-Q101 qualified and tested per the full stress test schedule including HTGB, H3TRB, TCT, and surge endurance. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements, making it suitable for use in engine control units, body control modules, and infotainment power supplies.
What is the maximum clamping voltage of SMBJ150H under surge conditions?
The maximum clamping voltage (VC) of SMBJ150H is 266 V at a peak pulse current (IPP) of 2.3 A with a 10/1000 µs waveform. This value is guaranteed across temperature and process variation and defines the upper voltage limit imposed on protected circuits during standardized surge events.
Can SMBJ150H be used in bidirectional configurations?
No-SMBJ150H is unidirectional only. For bidirectional protection, Taiwan Semiconductor specifies part numbers with "CH" or "CAH" suffixes (e.g., SMBJ150CH). Using SMBJ150H in reverse-biased AC applications risks permanent failure due to lack of symmetrical breakdown capability.
What is the thermal resistance profile of SMBJ150H?
SMBJ150H has a junction-to-case thermal resistance (RθJC) of 10 °C/W and junction-to-ambient resistance (RθJA) of 55 °C/W at standard PCB mounting conditions. These values enable reliable operation up to +150 °C junction temperature when mounted on ≥1 cm² copper pour with two thermal vias.
SMBJ150H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ150H FAQ
1.How can I place an order for SMBJ150H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150H 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 SMBJ150H reliable?
The price and inventory of SMBJ150H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150H is usually 5 days.
3.What payment methods are accepted for SMBJ150H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150H?
SMBJ150H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150H 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 SMBJ150H?
For technical support, including SMBJ150H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150H requirements.
6.How does Aetrix verify that SMBJ150H is sourced from the original manufacturer or authorized distributors?
All SMBJ150H 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 SMBJ150H meets industry standards.
7.What is the process for return or replacement of SMBJ150H?
All SMBJ150H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150H, 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 SMBJ150H part is unused and in its original packaging.
Return procedure for SMBJ150H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150H 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…
