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Vishay General Semiconductor - Diodes Division SMCJ90CAHM3_A/H
- Part No.:
- SMCJ90CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90CAHM3_A/H.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,252
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Product details
Overview
SMCJ90CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 146 V at 10.3 A peak pulse current under 10/1000 µs waveform, with 90 V standoff voltage and 1500 W peak pulse power dissipation - used to protect automotive sensor signal lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the SMCJ90CAHM3_A/H datasheet, SMCJ90CAHM3_A/H pinout, SMCJ90CAHM3_A/H application, or SMCJ90CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance of 75 °C/W junction-to-ambient - critical for high-reliability automotive and industrial surge protection designs.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both directions, enabling robust suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at 90 V), while low incremental surge resistance supports fast energy diversion during ESD or lightning-induced surges.
The SMCJ90CAHM3_A/H is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, making it suitable for automated SMT assembly. Its 75 °C/W thermal resistance requires careful PCB copper pad design (8.0 mm × 8.0 mm per terminal) to sustain full 1500 W pulse rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 90 V - maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 100–111 V at 1 mA - guaranteed conduction onset range for transient suppression |
| Clamping Voltage (VC) | 146 V at 10.3 A (10/1000 µs) - peak voltage seen by protected circuit during surge |
| Peak Pulse Power (PPPM) | 1500 W - maximum transient energy absorption capability under standard waveform |
| Junction Temperature Range | -55 °C to +150 °C - operational limits defining suitability for under-hood automotive use |
| Thermal Resistance (RθJA) | 75 °C/W - dictates required PCB copper area for thermal management in sustained surge scenarios |
| Leakage Current (ID) | ≤1.0 µA at 90 V - ensures minimal loading on high-impedance signal paths during normal operation |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Common transient path | Both terminals function identically; connected across protected line and ground or between differential lines |
| Case (body) | Non-electrical | Plastic molded housing with UL 94 V-0 flammability rating; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM supply chains (HM3 suffix) |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients like ESD or inductive switching spikes |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN bus or LIN signal lines in vehicle body control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector entry point to shunt surge energy to chassis ground. Use Value: Limits transient voltage to ≤146 V, preventing damage to downstream transceivers rated for 120 V absolute maximum. | Use Scenario: Safeguarding 24 V PLC digital input channels against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Bidirectional suppressor bridging input line and common reference to clamp ±1 kV transients per IEC 61000-4-5. Use Value: Absorbs 1500 W peak pulse without degradation, maintaining signal integrity during factory automation equipment operation. |
| Telecom Interface Protection | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY interface pins (e.g., RJ45 magnetics secondary side) from ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Low-capacitance TVS placed between differential pair and ground to preserve signal rise time while suppressing >8 kV contact ESD. Use Value: Clamps transients within 1 ns response time, limiting voltage excursion to safe levels for 100BASE-TX PHY ICs. | Use Scenario: Input-stage surge protection on 12–24 V DC power rails of smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on unregulated DC input, upstream of DC-DC converters and LDOs. Use Value: Withstands repeated 10/1000 µs surges up to 1500 W, extending product lifetime in regions with unstable mains-derived DC supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90CAHE3_A/H | Lower PPPM (400 W), smaller SMA package, same VWM/VBR range | Not suitable for high-energy surges; limited to consumer-grade or low-risk signal lines | Select when board space is constrained and surge threat level is below IEC 61000-4-5 Level 3 |
| SMCJ90AHE3_A/H | Unidirectional version; includes cathode band marking; identical clamping and thermal specs | Requires correct polarity placement; unsuitable for AC or floating differential signals | Choose only for DC-biased lines where polarity is fixed and reverse conduction must be blocked |
Compared with SMCJ90CAHM3_A/H, SMAJ90CAHE3_A/H offers reduced surge capacity in a smaller footprint, while SMCJ90AHE3_A/H provides identical clamping performance but lacks bidirectional symmetry - requiring layout verification for polarity alignment and excluding AC-coupled use cases.
Availability
SMCJ90CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial programmable logic controllers, and telecom infrastructure equipment requiring stable component supply with AEC-Q101 qualification and halogen-free compliance.
Supply support for SMCJ90CAHM3_A/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The SMCJ series targets high-energy transient suppression in harsh environments, engineered specifically for automotive, industrial, and telecom applications demanding AEC-Q101 qualification and 1500 W surge handling.
FAQ
What is the clamping voltage of SMCJ90CAHM3_A/H at its rated peak pulse current?
The SMCJ90CAHM3_A/H has a maximum clamping voltage (VC) of 146 V when subjected to its rated peak pulse current of 10.3 A under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events - a critical parameter for ensuring downstream ICs remain within their absolute maximum ratings. The SMCJ90CAHM3_A/H maintains this clamping performance across its full operating temperature range.
Is SMCJ90CAHM3_A/H qualified for automotive applications?
Yes, SMCJ90CAHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" (halogen-free, RoHS-compliant, and AEC-Q101 qualified). This qualification validates its reliability under automotive stress conditions including temperature cycling, humidity bias, and mechanical shock - making it suitable for use in engine control units, ADAS sensors, and body electronics. The SMCJ90CAHM3_A/H data sheet explicitly references AEC-Q101 compliance in its mechanical data section.
What does the "CA" suffix indicate in SMCJ90CAHM3_A/H?
The "CA" suffix in SMCJ90CAHM3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities - essential for protecting AC-coupled, floating, or differential signal lines without regard to voltage polarity. Unlike unidirectional variants (e.g., SMCJ90A), the SMCJ90CAHM3_A/H has no cathode marking and exhibits identical electrical characteristics in either direction, as verified in the "DEVICES FOR BIDIRECTION APPLICATIONS" section of the Vishay datasheet.
What is the thermal resistance of SMCJ90CAHM3_A/H, and how does it affect PCB layout?
The SMCJ90CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, measured on a 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal. This value requires adequate copper area to dissipate heat during repetitive surge events; reducing pad size increases thermal impedance and degrades peak power handling. For full 1500 W rating, the SMCJ90CAHM3_A/H must be mounted per Vishay's recommended pad layout - undersized traces or insufficient thermal vias will cause premature thermal failure during surge testing.
How does SMCJ90CAHM3_A/H differ from SMCJ90AHE3_A/H?
The SMCJ90CAHM3_A/H is bidirectional and halogen-free (HM3), whereas SMCJ90AHE3_A/H is unidirectional and RoHS-compliant but not halogen-free (E3). Both share identical VWM (90 V), VBR (100–111 V), VC (146 V), and PPPM (1500 W), but the SMCJ90CAHM3_A/H eliminates polarity dependency and adds halogen-free compliance. The SMCJ90CAHM3_A/H also carries AEC-Q101 qualification, while SMCJ90AHE3_A/H does not - a key distinction for automotive deployment.
SMCJ90CAHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 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)
SMCJ90CAHM3_A/H FAQ
1.How can I place an order for SMCJ90CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90CAHM3_A/H 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 SMCJ90CAHM3_A/H reliable?
The price and inventory of SMCJ90CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ90CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90CAHM3_A/H?
SMCJ90CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90CAHM3_A/H 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 SMCJ90CAHM3_A/H?
For technical support, including SMCJ90CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90CAHM3_A/H requirements.
6.How does Aetrix verify that SMCJ90CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ90CAHM3_A/H 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 SMCJ90CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ90CAHM3_A/H?
All SMCJ90CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90CAHM3_A/H, 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 SMCJ90CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ90CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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