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Taiwan Semiconductor Corporation SMBJ110H
- Part No.:
- SMBJ110H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110H.pdf
- Description:
- 600W, 135.5V, 10%, UNIDIRECTIONA
- Quantity:
- Payment:
- Shipping:
Inventory:8,629
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Product details
Overview
SMBJ110H from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 110V working stand-off voltage (VWM), 122–149V breakdown voltage (VBR), and 196V maximum clamping voltage (VC) at 3.2A peak impulse current - designed for automotive-grade ESD and load-dump protection in power supply rails and signal lines.
For engineers reviewing the SMBJ110H datasheet, SMBJ110H pinout, SMBJ110H application, or SMBJ110H equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, AEC-Q101 qualification, junction temperature range (−55°C to +150°C), and compatibility with automated SMT placement on 100V+ DC bus interfaces.
Technical Context
The SMBJ110H operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR (122–149V @ 1mA), clamping transients to ≤196V within <1.0ps response time. It sustains non-repetitive 600W peak pulse power (10/1000µs waveform) and exhibits <1µA blocking leakage above 110V.
Thermally, it features RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable operation up to TJ = 150°C. Its glass-passivated junction and matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110V - Maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 122V / 149V @ 1mA - Confirmed avalanche onset range defining turn-on threshold tolerance |
| VC @ IPP | 196V @ 3.2A - Clamped voltage during 10/1000µs surge, limiting downstream stress |
| PPK | 600W - Peak pulse power handling per single 10/1000µs transient event |
| ID @ VWM | <1µA - Low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max | +150°C - Enables use in under-hood automotive environments without derating |
| Package | DO-214AA (SMB) - Standardized surface-mount outline compatible with IPC-7351B footprint |
Pinout & Package
DO-214AA (SMB) package: cathode-banded unidirectional device with two terminals - anode (non-banded end) and cathode (banded end). Matte tin-plated leads support lead-free reflow per J-STD-002; polarity marked by molded cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Clamping output / Surge current sink | Connected to protected line (e.g., 110V rail); conducts avalanche current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD-HBM/MM |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupled noise) |
| Fast response time | <1.0ps - Limits voltage overshoot before protection engages, critical for protecting fast logic and analog inputs |
| Glass passivated junction | Enhances long-term reliability and stability of VBR and leakage under thermal cycling and humidity exposure |
| Moisture sensitivity level 1 | No floor life limitation - can be stored indefinitely at ≤30°C/60% RH without baking prior to reflow |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V/24V/48V battery-connected ECUs exposed to load dump and jump-start surges per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients before they reach PMICs or microcontrollers. Use Value: Limits peak voltage to ≤196V during 600W pulses, preventing latch-up or gate oxide damage in downstream 120V-rated ICs. | Use Scenario: Analog sensor outputs (e.g., pressure, temperature) routed across noisy industrial enclosures with EFT coupling risk. IC Role / Device Role / Timing Role: Low-leakage (≤1µA) TVS shunting fast transients (<1ps) on signal lines referenced to local ground. Use Value: Maintains signal integrity below 110V stand-off while adding <0.5pF capacitance (per Fig.5), avoiding bandwidth degradation. |
| LED Driver Bus Protection | Telecom DC Power Input Protection |
Use Scenario: Constant-current LED drivers powered from 110V DC intermediate bus in streetlight or signage systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input stage, absorbing repetitive switching spikes and lightning-induced surges. Use Value: Withstands 100A IFSM (8.3ms half-sine) and maintains stable VBR over lifetime, ensuring consistent clamping after 10,000+ surge events. | Use Scenario: -48V telecom rectifier outputs feeding base station control cards susceptible to induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional-capable variant (SMBJ110AH) used in differential pair protection; SMBJ110H applied in single-ended supply rail guard. Use Value: Meets GR-1089-CORE Level 3 immunity for conducted transients, clamping to 196V without degradation after 1000+ 10/1000µs pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110AH | Bidirectional version; same VWM (110V), but symmetric VBR (122–149V) in both directions; slightly lower VC (177V @ 3.5A) | Required where AC-coupled or floating signal lines need protection against reverse- and forward-polarity transients | Select SMBJ110AH only if bidirectional clamping is required; SMBJ110H is optimal for DC rail-to-ground protection. |
| SMBJ100H | Lower VWM (100V); VBR 111–136V; VC = 179V @ 3.9A; identical package and construction | Suitable for 100V nominal systems with tighter clamping margin but reduced surge headroom vs. SMBJ110H | Choose SMBJ100H when system operating voltage is strictly ≤100V and lower clamping voltage is prioritized over 600W headroom. |
Compared with SMBJ110AH and SMBJ100H, the SMBJ110H provides the highest VWM in its series while retaining full 600W rating - making it optimal for 110V DC bus protection where margin against false triggering and robust surge absorption are both critical.
Availability
SMBJ110H is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and LED driver bus protection requiring stable component supply and AEC-Q101-compliant transient suppression.
Supply support for SMBJ110H 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, with global distribution and AEC-Q101 validation capability.
The SMBJH series was developed specifically for automotive and industrial applications demanding high-energy transient immunity, low leakage, and automated assembly compatibility - targeting ISO 7637-2 and IEC 61000-4-5 compliance in harsh environments.
FAQ
What is the maximum clamping voltage of SMBJ110H under standard 10/1000µs surge conditions?
The SMBJ110H has a maximum clamping voltage (VC) of 196V when subjected to its rated peak impulse current of 3.2A using the standardized 10/1000µs waveform. This value is measured at TA = 25°C and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is SMBJ110H suitable for automotive applications per AEC-Q101?
Yes, SMBJ110H is explicitly AEC-Q101 qualified, having passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and human-body model (HBM) ESD. Its DO-214AA package, glass passivation, and moisture sensitivity level 1 rating further support use in automotive ECUs, body control modules, and lighting systems.
How does SMBJ110H differ from SMBJ110AH?
SMBJ110H is unidirectional, with clamping action only in reverse bias, while SMBJ110AH is bidirectional - providing symmetrical protection for AC signals or floating nodes. SMBJ110AH has a lower clamping voltage (177V @ 3.5A) and identical VWM (110V), but requires no polarity orientation during placement. The SMBJ110H remains preferred for DC rail-to-ground protection where polarity is fixed.
What is the leakage current specification for SMBJ110H at its working stand-off voltage?
At its working stand-off voltage (VWM) of 110V and TA = 25°C, the SMBJ110H exhibits a maximum blocking leakage current (ID) of 1µA. This ultra-low leakage minimizes power loss in high-impedance monitoring circuits and ensures stable voltage reference integrity in precision analog front-ends.
Can SMBJ110H be used in place of SMBJ100H for higher-voltage system designs?
Yes - SMBJ110H is engineered for 110V nominal systems, offering 10V higher VWM than SMBJ100H. Its 122–149V VBR range and 196V clamping voltage provide greater margin against false triggering in 110V DC bus applications, while maintaining identical 600W PPK rating and DO-214AA packaging for drop-in layout compatibility.
SMBJ110H 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):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 196V
- Current - Peak Pulse (10/1000µs):
- 3.2A
- 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)
SMBJ110H FAQ
1.How can I place an order for SMBJ110H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110H 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 SMBJ110H reliable?
The price and inventory of SMBJ110H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ110H is usually 5 days.
3.What payment methods are accepted for SMBJ110H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110H?
SMBJ110H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110H 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 SMBJ110H?
For technical support, including SMBJ110H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110H requirements.
6.How does Aetrix verify that SMBJ110H is sourced from the original manufacturer or authorized distributors?
All SMBJ110H 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 SMBJ110H meets industry standards.
7.What is the process for return or replacement of SMBJ110H?
All SMBJ110H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110H, 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 SMBJ110H part is unused and in its original packaging.
Return procedure for SMBJ110H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110H Tags
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