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Vishay General Semiconductor - Diodes Division SMCJ90AHE3/57T
- Part No.:
- SMCJ90AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90AHE3/57T.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,443
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Product details
Overview
SMCJ90AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, featuring 90 V standoff voltage (VWM), 146 V maximum clamping voltage (VC) at 10.3 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in automotive and industrial power electronics.
For engineers reviewing the SMCJ90AHE3/57T datasheet, SMCJ90AHE3/57T pinout, SMCJ90AHE3/57T application, or SMCJ90AHE3/57T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 1500 W surge capability, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ90AHE3/57T operates as a silicon avalanche diode that enters breakdown when reverse voltage exceeds its 100–111 V minimum/maximum breakdown range (VBR at IT = 1 mA). Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1 ns), enabling effective suppression of ESD and fast-rising transients.
Designed for unidirectional protection only, it features cathode-band polarity marking, 150 °C maximum junction temperature, and meets JESD201 Class 2 whisker resistance. The device is rated for 200 A non-repetitive forward surge (IFSM, 8.3 ms half-sine) and derates linearly above 25 °C ambient per Fig. 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 100 V / 111 V at 1 mA - Ensures reliable turn-on margin above VWM under production tolerance |
| VC @ IPPM | 146 V at 10.3 A - Clamped voltage seen by protected circuit during 1500 W transient event |
| PPPM | 1500 W - Peak surge power handling with standard 10/1000 μs waveform |
| IFSM | 200 A - Withstands single 8.3 ms half-sine surge without failure |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient on recommended 8 mm × 8 mm pad layout |
| TJ max | +150 °C - Maximum allowable junction temperature for reliability and lifetime compliance |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential node in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line; conducts avalanche current when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Stable VBR tolerance and low leakage (<1.0 μA) across temperature and life |
| Low incremental surge resistance | Enables tighter VC control and higher energy absorption efficiency |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| RoHS-compliant & halogen-free option available | Meets environmental compliance requirements for global industrial and automotive markets |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protection of 12 V/24 V battery-fed ECUs and body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges exceeding 90 V. Use Value: Limits voltage stress on downstream DC-DC converters and microcontrollers to ≤146 V during ISO 7637-2 Pulse 5a events. | Use Scenario: Input stage protection for variable-frequency drives exposed to inductive kickback from contactor switching. IC Role / Device Role / Timing Role: Standoff-rated TVS shunting transient energy away from rectifier bridges and gate drivers. Use Value: Absorbs up to 1500 W of 10/1000 μs surge energy while maintaining <1.0 μA leakage at nominal 90 V bus voltage. |
| Telecom Power Supply Outputs | Sensor Signal Line Protection |
Use Scenario: Secondary-side overvoltage suppression on isolated 48 V telecom DC/DC outputs feeding base station radios. IC Role / Device Role / Timing Role: Unidirectional clamping device placed across output capacitor to prevent overvoltage damage during regulation fault. Use Value: Fast response (<1 ns) and low clamping ratio (VC/VWM = 1.62) preserve output regulation integrity during transient events. | Use Scenario: CAN or LIN bus line protection in automotive sensor nodes subjected to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) connected between signal line and chassis ground. Use Value: Maintains signal integrity with minimal loading due to specified junction capacitance and tight VBR tolerance (±5.5%). |
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), smaller SMB (DO-214AA) package, same VWM/VC ratings | Reduced surge margin; suitable only for lower-energy transients or space-constrained layouts | Select when board area is critical and surge threat level is below 600 W |
| SMCJ90CAHE3/57T | Bidirectional variant with identical VWM, VBR, and PPPM; no polarity marking | Required for AC-coupled or dual-polarity signal lines where reverse conduction must be symmetrical | Choose for differential buses, RS-485, or any application needing bidirectional clamping |
Compared with SMCJ90AHE3/57T, SMBJ90AHE3/52T trades 60% surge capacity for 30% smaller footprint, while SMCJ90CAHE3/57T retains full 1500 W capability but removes polarity dependency-making it essential for AC or floating-line protection where unidirectional biasing is impractical.
Availability
SMCJ90AHE3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, telecom power supply outputs, and sensor signal line protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCJ90AHE3/57T 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 high-reliability and automotive-qualified components.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform designed specifically for robust, high-power transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where sustained surge immunity and long-term parametric stability are mandatory.
FAQ
What is the clamping voltage of SMCJ90AHE3/57T at its rated peak pulse current?
The SMCJ90AHE3/57T has a maximum clamping voltage (VC) of 146 V at 10.3 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The SMCJ90AHE3/57T maintains this clamping performance across its full operating temperature range when mounted per the recommended 8.0 mm × 8.0 mm copper pad layout.
Is SMCJ90AHE3/57T qualified for automotive applications?
Yes, SMCJ90AHE3/57T carries the HE3 suffix, indicating RoHS-compliance and full AEC-Q101 qualification. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114. This makes the SMCJ90AHE3/57T suitable for under-hood and cabin ECU protection in passenger vehicles and commercial vehicles where reliability under thermal and mechanical stress is required.
What is the standoff voltage rating of SMCJ90AHE3/57T, and how does it relate to system operating voltage?
The SMCJ90AHE3/57T has a standoff voltage (VWM) of 90 V, meaning it remains non-conductive up to this DC or RMS voltage level. For proper operation, the system's maximum continuous operating voltage must be ≤90 V to avoid leakage or premature conduction. In practice, designers apply a 10–20% margin-so SMCJ90AHE3/57T is typically selected for 72–80 V nominal systems such as 24 V commercial vehicle power nets or 48 V mild-hybrid architectures.
Does SMCJ90AHE3/57T have polarity markings, and how is it oriented on PCB?
Yes, SMCJ90AHE3/57T is unidirectional and features a visible cathode band on the SMC (DO-214AB) package body. During PCB layout, the banded end must connect to the line being protected (e.g., 90 V rail), while the anode connects to ground or the reference node. Reversing orientation prevents clamping action and may cause catastrophic failure under overvoltage. The SMCJ90AHE3/57T datasheet specifies this polarity in the Mechanical Data section and Figure 1.
What is the thermal resistance of SMCJ90AHE3/57T, and how does it affect power dissipation?
The SMCJ90AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. At 25 °C ambient, its steady-state power dissipation (PD) is rated at 6.5 W-but this derates linearly above 25 °C per Fig. 2 in the datasheet. Proper thermal pad design is essential to maintain SMCJ90AHE3/57T junction temperature below 150 °C during repeated surge events.
SMCJ90AHE3/57T 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)
SMCJ90AHE3/57T FAQ
1.How can I place an order for SMCJ90AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90AHE3/57T 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 SMCJ90AHE3/57T reliable?
The price and inventory of SMCJ90AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ90AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90AHE3/57T?
SMCJ90AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90AHE3/57T 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 SMCJ90AHE3/57T?
For technical support, including SMCJ90AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90AHE3/57T requirements.
6.How does Aetrix verify that SMCJ90AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ90AHE3/57T 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 SMCJ90AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ90AHE3/57T?
All SMCJ90AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90AHE3/57T, 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 SMCJ90AHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ90AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ90AHE3/57T Tags
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