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Vishay General Semiconductor - Diodes Division SMCJ90AHE3/9AT
- Part No.:
- SMCJ90AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90AHE3/9AT.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,965
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Product details
Overview
SMCJ90AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 90 V standoff voltage (VWM), 100–111 V breakdown range (VBR), and 146 V clamping voltage (VC) at 10.3 A peak pulse current (IPPM). It delivers 1500 W peak pulse power (10/1000 µs waveform) and is AEC-Q101 qualified for automotive electronics.
For engineers reviewing the SMCJ90AHE3/9AT datasheet, SMCJ90AHE3/9AT pinout, SMCJ90AHE3/9AT application, or SMCJ90AHE3/9AT equivalent, key selection criteria include clamping performance under 10/1000 µs transients, thermal resistance (RθJA = 75 °C/W), AEC-Q101 qualification status, unidirectional polarity marking, and compatibility with automated SMT assembly on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ90AHE3/9AT employs a glass-passivated silicon junction optimized for fast response (<1 ns) to transient overvoltages and low incremental surge resistance. Its unidirectional configuration provides cathode-band polarity identification and supports DC-biased protection paths in power rails and signal lines.
Rated for -55 °C to +150 °C operating junction temperature, it uses a thermally robust SMC package with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards, and meets MSL Level 1 per J-STD-020 at 260 °C peak reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 90 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 100–111 V at 1 mA - Confirmed minimum/maximum reverse breakdown threshold; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 146 V at IPPM = 10.3 A - Peak voltage seen by protected circuit during full-rated 1500 W surge; critical for downstream IC survival. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 µs) - Energy-handling capacity for standardized lightning/surge waveforms; enables robust industrial-grade protection. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Ultra-low leakage preserves system efficiency and prevents false triggering in high-impedance circuits. |
| TJ max. | +150 °C - Enables reliable operation in under-hood automotive or high-temperature industrial environments. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient; informs heatsinking requirements when derating above 25 °C. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads. Cathode identified by molded band on body. Compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line's lower-potential side (e.g., ground return). | Defines unidirectional conduction path; must be tied to reference plane matching system grounding scheme. |
| Cathode | Current exit terminal in forward bias; marked by molded band; connected to protected line's higher-potential side (e.g., VBUS). | Enables clamping action when transient exceeds VWM; polarity mismatch causes open-circuit failure mode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and infotainment modules. |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives - critical for field-deployed industrial equipment. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak - eliminates baking steps and supports high-yield automated SMT lines. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a) - improves clamping precision for sensitive 3.3 V/5 V logic interfaces. |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV line-earth) compliance with margin - suitable for AC/DC front-ends and motor drive inputs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 16750-2) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and chassis ground to clamp surges up to 120 V. Use Value: Clamps to 146 V at 10.3 A, limiting stress on downstream LDOs and microcontrollers without sacrificing response speed. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: TVS mounted across differential pair or single-ended output to suppress EFT bursts (IEC 61000-4-4) and inductive kickback. Use Value: 1.0 µA leakage at 90 V ensures minimal signal offset drift; 1500 W rating handles repetitive 5 kHz burst events. |
| Telecom DC Power Input Protection | Consumer Device USB Power Path Protection |
|
Use Scenario: Securing 48 V PoE-powered switches and base stations against lightning-induced surges on Ethernet lines. IC Role / Device Role / Timing Role: Primary TVS on DC input rail upstream of DC/DC converters, configured unidirectionally to ground. Use Value: 146 V clamping voltage maintains safe margin below 57 V PoE+ maximum, enabling single-stage protection architecture. |
Use Scenario: Adding secondary surge immunity to USB-C PD input stages in portable monitors and docking stations. IC Role / Device Role / Timing Role: TVS placed between VBUS and GND after EMI filter, rated for 90 V standoff to avoid interference with 20 V PD negotiation. Use Value: SMC package footprint allows placement near connector; AEC-Q101 qualification ensures longevity in consumer-grade thermal cycling profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90AHE3/52T | Lower PPPM (600 W), SMB (DO-214AA) package, same VWM/VBR/VC specs. | Reduced surge handling limits use to sub-1 kV IEC 61000-4-5 Level 2 systems; smaller footprint saves board space. | Select when 600 W surge capacity suffices and PCB real estate is constrained; not drop-in due to different pad layout. |
| SMCJ90CAHE3/9AT | Bidirectional variant; identical VWM/VBR/VC ratings but symmetrical clamping in both polarities. | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN FD) where polarity reversal may occur. | Choose only when bidirectional protection is mandated; unidirectional SMCJ90AHE3/9AT offers lower leakage and avoids unnecessary complexity in DC rails. |
Compared with SMBJ90AHE3/52T, the SMCJ90AHE3/9AT provides 2.5× higher surge power handling and better thermal dissipation via larger SMC pads; versus SMCJ90CAHE3/9AT, it delivers tighter leakage control and simpler polarity management in grounded DC systems.
Availability
SMCJ90AHE3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, telecom DC input staging, and consumer USB-C PD protection requiring stable component supply and AEC-Q101 traceability.
Supply support for SMCJ90AHE3/9AT 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where AEC-Q101 qualification, 1500 W surge capability, and low-clamp performance are mandatory.
FAQ
What is the clamping voltage of the SMCJ90AHE3/9AT under full-rated surge conditions?
The SMCJ90AHE3/9AT clamps to a maximum of 146 V when subjected to its rated 10.3 A peak pulse current (IPPM), corresponding to a 1500 W surge (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and verified at TA = 25 °C on 8.0 mm × 8.0 mm copper pads. The SMCJ90AHE3/9AT maintains this clamping performance across its operational temperature range, making it suitable for protecting 100 V-class downstream components.
Is the SMCJ90AHE3/9AT suitable for automotive applications?
Yes, the SMCJ90AHE3/9AT carries AEC-Q101 qualification, confirming compliance with stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - essential for under-hood and chassis-mounted modules. Its 1500 W surge rating and 146 V clamping voltage meet ISO 16750-2 load dump requirements. The SMCJ90AHE3/9AT is explicitly designated for automotive use via the "HE3" suffix per Vishay's ordering nomenclature.
How does the SMCJ90AHE3/9AT differ from bidirectional variants like SMCJ90CAHE3/9AT?
The SMCJ90AHE3/9AT is unidirectional, featuring a cathode band for polarity identification and optimized for DC-biased protection paths; it exhibits 1.0 µA max reverse leakage at 90 V. In contrast, SMCJ90CAHE3/9AT is bidirectional, with symmetrical clamping in both directions and doubled leakage limit (2.0 µA) for VWM ≤ 10 V devices - though both share identical VWM, VBR, and VC values. The SMCJ90AHE3/9AT is preferred for grounded power rails where polarity is fixed.
What is the thermal resistance and maximum junction temperature of the SMCJ90AHE3/9AT?
The SMCJ90AHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on standard 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads, and a maximum operating junction temperature (TJ max.) of +150 °C. These values enable reliable operation in high-temperature environments such as automotive engine compartments or industrial enclosures. Derating curves in the Vishay datasheet (Fig. 2) specify allowable power reduction above 25 °C ambient - critical for sustained surge duty cycles. The SMCJ90AHE3/9AT leverages its SMC package's thermal mass to sustain repeated transients without thermal runaway.
Does the SMCJ90AHE3/9AT require special PCB layout considerations?
Yes - optimal performance requires mounting the SMCJ90AHE3/9AT on minimum 8.0 mm × 8.0 mm copper pads per terminal to achieve rated 1500 W pulse power and 10.3 A IPPM. Smaller pads increase thermal impedance and reduce surge capability. The cathode band must align with schematic polarity; incorrect orientation renders the device non-functional in unidirectional mode. Via placement should avoid thermal isolation - inner-layer copper pours improve heat spreading. The SMCJ90AHE3/9AT's DO-214AB outline demands precise stencil aperture design for consistent solder paste deposition.
SMCJ90AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SMCJ90AHE3/9AT FAQ
1.How can I place an order for SMCJ90AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90AHE3/9AT 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 SMCJ90AHE3/9AT reliable?
The price and inventory of SMCJ90AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ90AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90AHE3/9AT?
SMCJ90AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90AHE3/9AT 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 SMCJ90AHE3/9AT?
For technical support, including SMCJ90AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90AHE3/9AT requirements.
6.How does Aetrix verify that SMCJ90AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ90AHE3/9AT 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 SMCJ90AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ90AHE3/9AT?
All SMCJ90AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90AHE3/9AT, 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 SMCJ90AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ90AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ90AHE3/9AT Tags
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