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Taiwan Semiconductor Corporation SMCJ90H
- Part No.:
- SMCJ90H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90H.pdf
- Description:
- 1500W, 111V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,084
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Product details
Overview
SMCJ90H 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), 160V maximum clamping voltage (VC) at 9.8A peak pulse current, and 3.5V forward voltage at 100A - designed for automotive-grade ESD and load-switching surge protection in power supply rails.
For engineers reviewing the SMCJ90H datasheet, SMCJ90H pinout, SMCJ90H application, or SMCJ90H equivalent, key selection considerations include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, AEC-Q101 qualification status, thermal resistance (RθJC = 10°C/W), unidirectional polarity marking, and compatibility with automated SMT placement on 150°C-rated PCBs.
Technical Context
The SMCJ90H operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-1ps response time from 0V to VBR(min), enabling effective suppression of fast transients such as ESD and inductive switching spikes. Its single-die configuration and DO-214AB mechanical construction support high-reliability mounting in space-constrained automotive and industrial modules.
It meets ISO 7637-2 test requirements for automotive electronics immunity, with specified clamping behavior under 10/1000μs waveform per REA definition and derating curves for ambient temperatures up to +125°C. Junction temperature range is –55°C to +150°C, and 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 conduction begins |
| VBR min/max | 100–122 V @ IT = 1 mA - guaranteed avalanche initiation window for predictable turn-on |
| VC @ IPPM | 160 V @ 9.8 A - peak clamped voltage during 10/1000μs surge, limiting downstream stress |
| PPK | 1500 W - peak pulse power handling capability per single non-repetitive event |
| VF @ 100A | 3.5 V - forward voltage drop under high-current unidirectional surge conditions |
| IR @ VWM | <1 μA - negligible leakage at rated stand-off, preserving low-power circuit integrity |
| RθJC | 10 °C/W - enables efficient heat transfer from junction to case in thermally constrained layouts |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional polarity indicated by cathode band. Matte tin-plated leads, RoHS and halogen-free compliant, UL 94V-0 molding compound, weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane during transient clamp |
| Cathode | Reverse-biased input / Protected line connection | Connected to protected signal or power rail; cathode band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood and chassis applications per stress test requirements |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under thermal cycling and humidity |
| Clamping ratio VC/VBR | ~1.44 (160V/111V typ) - balances low clamping voltage with robust overvoltage margin |
| Fast response time | <1 ps - ensures suppression activation before sensitive ICs experience damaging voltage overshoot |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive switch-off), Pulse 2a/2b (load dump coupling), and Pulse 3a/3b (capacitive discharge) |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground, clamping surges within 10/1000μs waveform limits. Use Value: Limits peak voltage to ≤160V during 1500W transients, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Shielding digital input channels of programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff protection device on 24V DC inputs, activated only during >90V transients. Use Value: Maintains <1μA leakage at 24V nominal, ensuring accurate low-current sensing while surviving 1kV/42Ω ISO 7637-2 Pulse 1 events. |
| Telecom DC Power Interface | Consumer Appliance Motor Drive Supply |
Use Scenario: Safeguarding PoE-powered equipment front-end DC inputs against lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping element on 48V DC input, coordinated with upstream fuse and common-mode chokes. Use Value: Clamps 10/1000μs surges to 160V with <1ps latency, meeting IEC 61000-4-5 Level 3 immunity requirements. | Use Scenario: Protecting BLDC motor driver power stages from back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Unidirectional TVS across DC bus rails, absorbing inductive energy from MOSFET switching. Use Value: Handles 200A peak forward surge (IFSM), sustaining repeated 1500W pulses without degradation due to glass passivation. |
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 | 600W rating, SMB package (smaller footprint), lower IPPM (5.5A), higher VC (156V) | Lower power handling; suitable for consumer-grade, non-automotive designs with space constraints | Select when board area is limited and surge energy is ≤600W; not AEC-Q101 qualified |
| 1.5KE91A | Through-hole TO-218 package, 1500W, VF = 3.5V, but slower response (>1ns), no AEC-Q101 or ISO 7637-2 validation | Requires wave soldering; lacks automotive qualification and standardized pulse testing documentation | Choose for legacy through-hole designs where rework tolerance and cost outweigh automotive compliance needs |
Compared with SMCJ90H, SMBJ90A offers smaller size but reduced surge capacity and no automotive qualification, while 1.5KE91A provides identical power rating in through-hole form but lacks documented ISO 7637-2 compliance and sub-ps response - making SMCJ90H the preferred choice for new AEC-Q101-compliant SMT designs requiring precise clamping and fast transient immunity.
Availability
SMCJ90H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O hardening, and telecom DC interface surge suppression requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMCJ90H 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 devices since 1979.
The SMCJ series was developed specifically for AEC-Q101-compliant, high-power surface-mount surge protection in automotive and industrial environments - emphasizing robust clamping, fast response, and process-controlled VBR consistency across voltage grades.
FAQ
What is the maximum clamping voltage of the SMCJ90H under standard test conditions?
The SMCJ90H has a maximum clamping voltage (VC) of 160 V when subjected to its rated peak pulse current (IPPM) of 9.8 A using the 10/1000μs waveform defined in IEC 61000-4-5. This value is measured at TA = 25°C and represents the upper limit of voltage seen by downstream circuitry during a worst-case transient event. The SMCJ90H maintains this clamping performance consistently due to its glass-passivated junction and tight VBR distribution (100–122 V).
Is the SMCJ90H suitable for bidirectional transient protection?
No, the SMCJ90H is a unidirectional TVS diode intended for DC rail protection with defined anode/cathode polarity. For bidirectional applications, Taiwan Semiconductor specifies parts with CH or CAH suffixes (e.g., SMCJ90CH). Using the SMCJ90H in reverse-biased AC or bipolar configurations risks premature failure, as its reverse conduction is not characterized or guaranteed beyond VWM = 90 V. Always verify polarity marking and circuit topology before deploying the SMCJ90H.
Does the SMCJ90H meet AEC-Q101 stress test requirements?
Yes, the SMCJ90H is explicitly AEC-Q101 qualified per the manufacturer's documentation. It undergoes temperature cycling, highly accelerated life testing (HALT), ESD (HBM ≥8 kV), and surge robustness validation aligned with automotive electronic component reliability standards. This qualification applies to the full SMCJ5.0H–SMCJ170H family, including the SMCJ90H, and supports use in engine control units, body electronics, and ADAS subsystems where extended temperature operation (–55°C to +150°C) and long-term reliability are mandatory.
What is the forward voltage specification for the SMCJ90H, and under what condition is it measured?
The forward voltage (VF) of the SMCJ90H is 3.5 V, measured at a forward surge current (IF) of 100 A per the absolute maximum ratings table. This parameter applies only to unidirectional conduction during high-current transient events and reflects the diode's low dynamic impedance under surge conditions. It is not a DC forward voltage rating and should not be used for steady-state power loss calculations - the SMCJ90H is not intended for continuous forward conduction.
How does the SMCJ90H compare to the SMCJ90AH variant?
The SMCJ90AH differs from the SMCJ90H primarily in tighter breakdown voltage tolerance: SMCJ90H has VBR = 100–122 V, while SMCJ90AH specifies 100–111 V. Both share identical VWM (90 V), VC (160 V / 146 V respectively), packaging (DO-214AB), and AEC-Q101 qualification. The SMCJ90AH offers improved VBR consistency for designs requiring precise clamping threshold control, whereas the SMCJ90H provides broader margin for applications where slight VBR variation is acceptable. Both use the same marking code prefix (GGW/GGX) and thermal specs.
SMCJ90H 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ90H FAQ
1.How can I place an order for SMCJ90H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90H 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 SMCJ90H reliable?
The price and inventory of SMCJ90H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90H is usually 5 days.
3.What payment methods are accepted for SMCJ90H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90H?
SMCJ90H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90H 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 SMCJ90H?
For technical support, including SMCJ90H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90H requirements.
6.How does Aetrix verify that SMCJ90H is sourced from the original manufacturer or authorized distributors?
All SMCJ90H 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 SMCJ90H meets industry standards.
7.What is the process for return or replacement of SMCJ90H?
All SMCJ90H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90H, 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 SMCJ90H part is unused and in its original packaging.
Return procedure for SMCJ90H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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