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Taiwan Semiconductor Corporation SMBJ110C
- Part No.:
- SMBJ110C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110C.pdf
- Description:
- 600W, 135.5V, 10%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,072
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Product details
Overview
SMBJ110C from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection in power rails and signal lines. It features a 110 V working stand-off voltage (VWM), 122–149 V breakdown voltage (VBR), 196 V maximum clamping voltage (VC) at 3.2 A peak impulse current (IPP), and 600 W peak pulse power rating with <1.0 ps response time - ideal for automotive load-dump and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance.
For engineers reviewing the SMBJ110C datasheet, SMBJ110C pinout, SMBJ110C application, or SMBJ110C equivalent, key selection criteria include clamping performance under 10/1000 µs transients, leakage current ≤1 µA at 110 V, thermal resistance (RθJA = 55 °C/W), and bidirectional marking compatibility (C suffix denotes bipolar configuration).
Technical Context
The SMBJ110C implements a glass-passivated silicon junction optimized for fast transient suppression in DC power distribution networks. Its unidirectional polarity (cathode band marked) enables asymmetric clamping - conducting only during reverse overvoltage events while blocking forward conduction up to 3.5 V at 50 A.
It operates within –55 °C to +150 °C junction temperature range and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1. Thermal design requires attention to RθJC = 10 °C/W and PCB copper area per suggested pad layout to sustain 3 W steady-state dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous DC or RMS voltage the device blocks without clamping; sets minimum system operating margin before protection activates. |
| VBR min/max | 122 V / 149 V @ 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on above nominal rail while avoiding false triggering. |
| VC @ IPP | 196 V @ 3.2 A (10/1000 µs) - Clamped voltage seen by protected circuit during worst-case surge; defines maximum stress on downstream ICs. |
| ID @ VWM | ≤1 µA - Ultra-low leakage preserves battery life and prevents unintended biasing in high-impedance circuits. |
| PPK | 600 W - Peak non-repetitive surge energy handling capability; supports automotive load-dump and inductive switching events. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating below ambient. |
| RθJA | 55 °C/W - Requires ≥1 cm² of 2-oz copper pour for thermal management in continuous 3 W dissipation scenarios. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, matte tin-plated leads, polarity indicated by cathode band (unidirectional operation). Weight: 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage rail; forms return path during clamping event. |
| Cathode | High-side transient input | Connected to protected line (e.g., 12 V battery rail); conducts when voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and humidity exposure; eliminates parameter drift in humid industrial environments. |
| <1.0 ps response time | Clamps ESD and EFT transients before sensitive logic thresholds are violated - critical for CAN/LIN bus protection. |
| ISO 7637-2 compliant | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT), enabling drop-in use in automotive ECUs. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and UL 94V-0 flammability requirements - suitable for consumer, medical, and transportation end equipment. |
| Automated placement compatible | DO-214AA footprint supports high-speed pick-and-place; no manual soldering required in volume manufacturing. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: 12 V battery line in engine control unit exposed to load-dump surges up to 120 V. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery feed and LDO input. Use Value: Limits transient voltage to ≤196 V, preventing damage to 36 V-rated regulators and microcontrollers. |
Use Scenario: 24 V digital input channel on programmable logic controller subject to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Standoff protector across input terminal and common rail. Use Value: Absorbs 600 W pulses without degradation, maintaining signal integrity during 100 ms coil de-energization events. |
| LED Driver Overvoltage Clamp | RS-485 Transceiver Line Protection |
Use Scenario: Constant-current LED driver board powered from unregulated 48 V supply in streetlight fixture. IC Role / Device Role / Timing Role: Primary surge limiter on input bulk capacitor rail. Use Value: Clamps 10/1000 µs surges to 196 V, protecting MOSFET gate oxide and current-sense amplifier inputs. |
Use Scenario: RS-485 data line in factory automation network subjected to EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: Bidirectional clamp (C suffix variant) across differential pair (A/B) and ground. Use Value: Limits common-mode transients to <200 V while preserving signal rise/fall times due to sub-picosecond response. |
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 SMAJ110A | Same VWM (110 V), slightly lower VC (192 V @ 3.3 A), higher IPP (3.3 A vs. 3.2 A), identical DO-214AA package. | Approved for aerospace-grade surge testing (MIL-STD-1275E); tighter VBR tolerance (±5% vs. ±10%). | Preferred where tighter parametric consistency and extended qualification are required; same PCB layout. |
| ON Semiconductor SMCJ110A | Higher PPK (1500 W), larger DO-214AB (SMC) package, VWM = 110 V, VC = 196 V @ 7.7 A. | Supports higher-energy transients (e.g., lightning-induced surges); not footprint-compatible with SMBJ110C. | Select when system-level surge test levels exceed ISO 7637-2 and board space allows larger SMC package. |
Compared with SMAJ110A, SMBJ110C offers identical clamping performance in a smaller DO-214AA footprint but with wider VBR tolerance; versus SMCJ110A, it trades peak power capacity for compactness and cost - making SMBJ110C optimal for space-constrained automotive and industrial modules requiring ISO 7637-2 compliance.
Availability
SMBJ110C is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial PLC input conditioning, and LED driver overvoltage clamping requiring stable component supply across production lifecycles.
Supply support for SMBJ110C 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 power MOSFETs since 1979.
The SMBJ series was developed for high-reliability transient suppression in automotive and industrial environments, emphasizing robust glass-passivated junctions, AEC-Q200 alignment, and full ISO 7637-2 compliance out-of-the-box.
FAQ
What is the polarity configuration of SMBJ110C?
The SMBJ110C is a unidirectional TVS diode with cathode band marking indicating the high-side terminal. It conducts only during reverse-biased overvoltage events - i.e., when the cathode voltage exceeds the anode by ≥122 V. This configuration protects positive-rail systems like 12 V or 24 V automotive supplies while blocking forward conduction below 3.5 V.
Does SMBJ110C meet automotive surge immunity standards?
Yes, SMBJ110C meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (electrical fast transients) requirements. Its 600 W peak pulse power rating, 196 V clamping voltage, and <1.0 ps response time ensure compliance without external filtering - validated per TSC's R2104 specification release.
What is the maximum allowable junction temperature for SMBJ110C?
The SMBJ110C has a maximum junction temperature (TJ) of +150 °C, with thermal resistance RθJA = 55 °C/W and RθJC = 10 °C/W. To maintain reliability, PCB layout must provide adequate copper area (≥1 cm² of 2-oz copper) and avoid sustained power dissipation above 3 W at ambient temperatures exceeding 75 °C.
How does SMBJ110C differ from SMBJ110CA?
SMBJ110C is unidirectional; SMBJ110CA is bidirectional - meaning it clamps symmetrically for both polarities. The "C" suffix alone indicates unidirectional construction with cathode band, while "CA" denotes bidirectional operation with center-tap symmetry. SMBJ110C cannot replace SMBJ110CA in AC-coupled or differential line protection without circuit redesign.
Is SMBJ110C RoHS and halogen-free compliant?
Yes, SMBJ110C is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and matte tin-plated leads comply with J-STD-002 solderability standards - satisfying environmental and safety requirements for consumer, medical, and transportation electronics.
SMBJ110C 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ110C FAQ
1.How can I place an order for SMBJ110C through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110C 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 SMBJ110C reliable?
The price and inventory of SMBJ110C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ110C is usually 5 days.
3.What payment methods are accepted for SMBJ110C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110C?
SMBJ110C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110C 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 SMBJ110C?
For technical support, including SMBJ110C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110C requirements.
6.How does Aetrix verify that SMBJ110C is sourced from the original manufacturer or authorized distributors?
All SMBJ110C 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 SMBJ110C meets industry standards.
7.What is the process for return or replacement of SMBJ110C?
All SMBJ110C units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110C, 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 SMBJ110C part is unused and in its original packaging.
Return procedure for SMBJ110C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110C Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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