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Taiwan Semiconductor Corporation SMCJ90
- Part No.:
- SMCJ90
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90.pdf
- Description:
- 1500W, 111V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
SMCJ90 from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) in DO-214AB (SMC) package, with 90V working stand-off voltage (VWM), 100–122V breakdown voltage (VBR), and 160V maximum clamping voltage (VC) at 9.8A peak impulse current. It delivers fast response (<1.0 ps), low leakage (<1 µA @ 90V), and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and EFT immunity.
For engineers reviewing the SMCJ90 datasheet, SMCJ90 pinout, SMCJ90 application, or SMCJ90 equivalent, key selection criteria include clamping performance under 10/1000 µs surge, forward voltage (VF = 3.5 V @ 100 A), thermal resistance (RθJC = 10 °C/W), and compliance with JESD201 Class 2 whisker testing and RoHS/halogen-free requirements.
Technical Context
The SMCJ90 operates as a unidirectional avalanche diode, designed to clamp transient overvoltages by entering breakdown when reverse voltage exceeds VBR (100–122 V). Its glass-passivated junction ensures stable breakdown characteristics and low leakage, while the DO-214AB package enables high-power dissipation (1500 W peak, 5 W steady-state) with low thermal resistance (RθJA = 55 °C/W).
It supports automated placement and complies with ISO 7637-2 for automotive transients - including Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT/burst noise). Polarity is marked via cathode band; moisture sensitivity level is J-STD-020 Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 100 / 122 V @ IT = 1 mA - Ensures reliable turn-on above system nominal voltage with margin |
| VC @ IPPM | 160 V @ 9.8 A (10/1000 µs waveform) - Limits downstream voltage stress during surge events |
| PPK | 1500 W - Peak pulse power handling capability defines transient energy absorption capacity |
| VF @ 100 A | 3.5 V - Forward voltage drop during high-current surges; critical for unidirectional load-dump protection |
| IR @ VWM | <1 µA - Minimal leakage preserves system standby power and signal integrity |
| TJ max | +150 °C - Enables operation in under-hood automotive or industrial environments |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, single-diode configuration with cathode band marking polarity. Matte tin-plated leads meet J-STD-002 solderability; weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path; forms clamping loop with cathode |
| Cathode | High-side transient input node | Connected to protected line (e.g., 12 V rail); avalanche conduction occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Stable VBR tolerance and low IR drift over temperature and lifetime |
| ISO 7637-2 compliance | Validated protection against automotive load-dump (Pulse 1), switching transients (Pulse 2a/2b), and EFT (Pulse 3a/3b) |
| Fast response time <1.0 ps | Clamps transients before sensitive ICs experience overstress - critical for CAN/LIN bus and MCU I/O protection |
| J-STD-020 Level 1 MSL | Zero bake requirement prior to reflow; supports standard SMT assembly without moisture-related popcorning |
| RoHS + halogen-free | Meets IEC 61249-2-21; suitable for automotive and industrial applications with strict material compliance mandates |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load-dump pulses up to 120 V during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp transients before regulator stage. Use Value: Clamps to ≤160 V within <1 ps, limiting stress on downstream 36 V-rated regulators and preserving system uptime. | Use Scenario: 24 V analog sensor inputs (e.g., pressure, temperature) in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to absorb EFT bursts per IEC 61000-4-4. Use Value: With <1 µA leakage at 24 V, it avoids signal offset errors while suppressing 4 kV contact ESD and 2 kV EFT. |
| LED Driver Overvoltage Clamp | Motor Control Gate Driver Surge Suppression |
Use Scenario: Constant-current LED drivers in streetlight systems subjected to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Placed across bulk capacitor to limit DC bus overvoltage during surge coupling. Use Value: 1500 W peak power rating absorbs multi-millisecond transients without degradation; VF = 3.5 V minimizes conduction loss during fault. | Use Scenario: Half-bridge gate driver circuits driving BLDC motors where inductive kickback induces negative voltage spikes. IC Role / Device Role / Timing Role: Bidirectional clamping not required; unidirectional SMCJ90 protects low-side MOSFET source node against negative transients. Use Value: Cathode-to-ground configuration clamps negative excursions below −3.5 V (forward-biased), preventing gate oxide damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A | Lower PPK (600 W), smaller SMB package (DO-214AA), tighter VBR tolerance (100–111 V) | Lower energy handling; suited for space-constrained consumer electronics, not automotive load-dump | Select SMCJ90 for 1500 W surge robustness; SMBJ90A only where board area is critical and peak energy ≤600 W |
| P6SMB90A | Same DO-214AA package, 600 W PPK, VBR = 100–111 V, VF = 3.5 V, but higher IR (≤5 µA @ 90 V) | Limited to non-automotive industrial use due to lower surge rating and no ISO 7637-2 validation | SMCJ90 provides verified automotive-grade immunity and 2.5× higher peak power - essential for Tier-1 ECU designs |
Compared with SMBJ90A and P6SMB90A, the SMCJ90 offers 2.5× higher peak power (1500 W vs. 600 W), DO-214AB's superior thermal performance (RθJC = 10 °C/W), and documented ISO 7637-2 compliance - making it the only choice for automotive power rail protection requiring sustained surge resilience.
Availability
SMCJ90 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, LED driver modules, and motor control systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMCJ90 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 Taiwanese manufacturer specializing in discrete semiconductors, including TVS diodes, rectifiers, and MOSFETs, with ISO/TS 16949 certification for automotive-grade products.
The SMCJ series is part of TSC's high-power TVS platform engineered specifically for ISO 7637-2-compliant automotive and industrial transient suppression, emphasizing rugged packaging, low clamping ratio, and AEC-Q101 readiness.
FAQ
What is the maximum clamping voltage of the SMCJ90 under standard test conditions?
The SMCJ90 has a maximum clamping voltage (VC) of 160 V when subjected to a 10/1000 µs surge waveform at 9.8 A peak impulse current (IPPM), per the manufacturer's electrical specifications table. This value is measured at TA = 25°C and defines the upper voltage limit imposed on protected circuitry during transient events. The SMCJ90 maintains this clamping performance consistently due to its glass-passivated junction and DO-214AB thermal design.
Is the SMCJ90 suitable for bidirectional transient protection?
No - the SMCJ90 is a unidirectional TVS diode, intended for applications where transients occur only in one polarity (e.g., positive-going surges on a DC rail). For bidirectional protection, the SMCJ90CA variant must be used. The SMCJ90's cathode band marking and forward voltage specification (VF = 3.5 V @ 100 A) confirm its unidirectional architecture; using it in reverse-biased configurations risks permanent damage.
Does the SMCJ90 meet automotive transient immunity standards?
Yes - the SMCJ90 is explicitly validated to meet ISO 7637-2 for Pulses 1, 2a, 2b, 3a, and 3b, covering load-dump, inductive switching, and electrical fast transients common in 12 V automotive systems. This compliance is stated in the official Taiwan Semiconductor datasheet (Version S2104) and supported by its 1500 W peak power rating, 160 V clamping, and thermal design optimized for under-hood ambient temperatures up to +125°C.
What is the forward voltage (VF) specification for the SMCJ90, and why does it matter?
The SMCJ90 has a forward voltage (VF) of 3.5 V at 100 A, as confirmed in the Absolute Maximum Ratings table and footnote 2 of the datasheet. This parameter matters because, during negative-going transients or reverse-biased faults, the device conducts in forward mode - and a low VF minimizes power dissipation and prevents thermal runaway. It also enables effective clamping of negative spikes in low-side protection topologies, a key design consideration in motor driver and gate driver applications.
Can the SMCJ90 be used in lead-free reflow processes without preconditioning?
Yes - the SMCJ90 has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and requires no baking or floor-life management before lead-free reflow. Its matte tin-plated leads are fully compatible with Pb-free SAC305 solder profiles, and the DO-214AB molding compound meets UL 94V-0 flammability rating - ensuring robust assembly yield and reliability in high-volume SMT lines.
SMCJ90 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 160V
- Current - Peak Pulse (10/1000µs):
- 9.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ90 FAQ
1.How can I place an order for SMCJ90 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90 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 SMCJ90 reliable?
The price and inventory of SMCJ90 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90 is usually 5 days.
3.What payment methods are accepted for SMCJ90?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90?
SMCJ90 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90 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 SMCJ90?
For technical support, including SMCJ90 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90 requirements.
6.How does Aetrix verify that SMCJ90 is sourced from the original manufacturer or authorized distributors?
All SMCJ90 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 SMCJ90 meets industry standards.
7.What is the process for return or replacement of SMCJ90?
All SMCJ90 units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90, 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 SMCJ90 part is unused and in its original packaging.
Return procedure for SMCJ90:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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