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Vishay General Semiconductor - Diodes Division SMCJ90CAHE3/9AT
- Part No.:
- SMCJ90CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90CAHE3/9AT.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,803
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Product details
Overview
SMCJ90CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 90 V standoff voltage (VWM), 146 V maximum clamping voltage (VC) at 10.3 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) under 10/1000 µs waveform - deployed across automotive sensor lines, industrial I/O interfaces, and telecom signal paths.
For engineers reviewing the SMCJ90CAHE3/9AT datasheet, SMCJ90CAHE3/9AT pinout, SMCJ90CAHE3/9AT application, or SMCJ90CAHE3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical breakdown behavior in both directions due to its bidirectional CA construction. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD, lightning-induced transients, and inductive switching spikes.
The SMCJ90CAHE3/9AT is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (260 °C peak reflow), and exhibits a temperature coefficient of VBR at 0.106 %/°C - ensuring stable clamping performance across automotive and industrial thermal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - reverse stand-off voltage; defines maximum continuous operating voltage before clamping initiates |
| VBR min/max | 100 V / 111 V at 1 mA test current - ensures reliable bidirectional breakdown within specified tolerance band |
| VC @ IPPM | 146 V at 10.3 A - clamping voltage under standardized 10/1000 µs surge; determines protected circuit's maximum transient exposure |
| PPPM | 1500 W - peak pulse power handling capability; supports high-energy transient suppression without failure |
| ID @ VWM | 1.0 µA - ultra-low reverse leakage at rated standoff voltage; minimizes standby power loss and signal distortion |
| TJ max. | +150 °C - maximum junction temperature rating; enables use in under-hood automotive and high-ambient industrial settings |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm body and 2.62 mm lead spacing; optimized for automated placement and thermal dissipation |
Pinout & Package
SMCJ90CAHE3/9AT uses a 2-terminal SMC (DO-214AB) package with no polarity marking - consistent with bidirectional TVS construction. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either direction) | One of two symmetrical terminals; accepts surge current regardless of polarity - enables single-device bidirectional protection |
| Cathode | Transient current exit point (either direction) | Electrically identical to Anode in CA devices; no functional distinction - simplifies PCB layout and eliminates orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS, and infotainment systems |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives - critical for harsh-environment deployments |
| MSL Level 1 rating | Enables standard reflow soldering at 260 °C peak without preconditioning - reduces manufacturing complexity and cost |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients - improves protection margin for downstream ICs like CAN transceivers and ADC front-ends |
| 1500 W peak pulse power | Handles high-energy surges from load dump or lightning coupling without degradation - extends system-level surge immunity beyond IEC 61000-4-5 Level 4 |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog and digital signal lines (e.g., LIN, SENT, thermistor inputs) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt surge energy before reaching MCU or signal conditioner. Use Value: Maintains signal integrity under ±100 V transients while drawing <1 µA leakage at 90 V - prevents false triggering and preserves low-power sleep modes. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each isolated input channel, coordinated with optocoupler input stage. Use Value: Clamps to ≤146 V within nanoseconds, limiting stress on upstream series resistors and internal ESD diodes - extends module service life in factory automation. |
| Telecom Line Interface | Power Supply Rail Clamp |
Use Scenario: Shielding RS-485/RS-422 differential pairs in base station remote units from induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) referenced to chassis ground, positioned before TVS array or isolation transformer. Use Value: Symmetrical 100–111 V breakdown ensures balanced clamping on both A/B lines - avoids common-mode-to-differential conversion and data corruption. |
Use Scenario: Secondary overvoltage clamp on 90 V intermediate bus rails in telecom power supplies following primary MOV or GDT protection. IC Role / Device Role / Timing Role: Fast-acting secondary limiter that activates after slower primary protectors - provides precise voltage ceiling for downstream DC-DC converters. Use Value: 146 V clamping at 10.3 A complements upstream 200 V MOVs by reducing residual let-through voltage - improves converter MOSFET SOA margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CAHE3/A | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM/VC specs | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 compliance | Select when board space is constrained and surge threat level is ≤600 W - verify thermal derating on 5.0 mm × 5.0 mm pads |
| SMCJ90CAHM3/9AT | Halogen-free variant with identical electrical specs and AEC-Q101 qualification | Required for RoHS-compliant automotive programs mandating halogen-free materials | Choose for Tier 1 automotive BOMs requiring halogen-free certification - no layout or performance trade-offs |
Compared with SMBJ90CAHE3/A and SMCJ90CAHM3/9AT, the SMCJ90CAHE3/9AT delivers full 1500 W surge capacity in a thermally robust SMC package while maintaining AEC-Q101 qualification and commercial RoHS compliance - making it the optimal choice for high-reliability industrial and automotive applications demanding proven energy-handling headroom.
Availability
SMCJ90CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMCJ90CAHE3/9AT 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, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series was engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure - prioritizing AEC-Q101 qualification, low clamping ratio, and robust SMT manufacturability in the SMC package.
FAQ
What does the "CA" suffix indicate in SMCJ90CAHE3/9AT?
The "CA" suffix denotes a bidirectional configuration, meaning the SMCJ90CAHE3/9AT provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., SMCJ90A), it has no cathode marking and functions identically regardless of voltage polarity - essential for protecting AC-coupled or differential signal lines where surge direction is unpredictable.
Is SMCJ90CAHE3/9AT qualified for automotive applications?
Yes, SMCJ90CAHE3/9AT is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code HE3 suffix. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD - validating its suitability for under-hood and cabin-mounted automotive electronics such as body control modules and sensor interfaces.
What is the maximum clamping voltage of SMCJ90CAHE3/9AT and how is it measured?
The maximum clamping voltage (VC) of SMCJ90CAHE3/9AT is 146 V, measured at 10.3 A peak pulse current (IPPM) using the standardized 10/1000 µs double-exponential surge waveform. This value represents the highest voltage the device allows across its terminals during a defined transient event - a critical parameter for ensuring downstream components remain within safe operating limits.
How does the SMC (DO-214AB) package of SMCJ90CAHE3/9AT impact thermal performance?
The SMC (DO-214AB) package of SMCJ90CAHE3/9AT provides a thermal resistance of 15 °C/W junction-to-lead (RθJL) and 75 °C/W junction-to-ambient (RθJA) on recommended 8.0 mm × 8.0 mm copper pads. This enables efficient heat dissipation during repetitive surge events and supports sustained operation up to +150 °C junction temperature - outperforming smaller SMB or SOD packages in high-duty-cycle applications.
Can SMCJ90CAHE3/9AT replace older SMCJ90A parts in existing designs?
No - SMCJ90CAHE3/9AT is not a drop-in replacement for unidirectional SMCJ90A. While both share VWM = 90 V and similar package dimensions, the CA version lacks polarity marking and exhibits symmetrical breakdown, whereas the A version requires correct cathode orientation. Replacing one with the other without verifying circuit topology and surge polarity may result in ineffective protection or device failure.
SMCJ90CAHE3/9AT 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ90CAHE3/9AT FAQ
1.How can I place an order for SMCJ90CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90CAHE3/9AT 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 SMCJ90CAHE3/9AT reliable?
The price and inventory of SMCJ90CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ90CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90CAHE3/9AT?
SMCJ90CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90CAHE3/9AT 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 SMCJ90CAHE3/9AT?
For technical support, including SMCJ90CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90CAHE3/9AT requirements.
6.How does Aetrix verify that SMCJ90CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ90CAHE3/9AT 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 SMCJ90CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ90CAHE3/9AT?
All SMCJ90CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90CAHE3/9AT, 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 SMCJ90CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ90CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ90CAHE3/9AT Tags
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