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Vishay General Semiconductor - Diodes Division SMCJ90CAHM3/H
- Part No.:
- SMCJ90CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90CAHM3/H.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,865
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Product details
Overview
SMCJ90CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. 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 (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the SMCJ90CAHM3/H datasheet, SMCJ90CAHM3/H pinout, SMCJ90CAHM3/H application, or SMCJ90CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), junction temperature derating above 25 °C, and thermal resistance (RθJA = 75 °C/W) under standard pad layout.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche breakdown mechanism to divert surge energy away from downstream circuitry. Its bidirectional structure ensures symmetrical clamping in both polarities, with identical VBR min/max (100–111 V) and leakage <1.0 μA at VWM, enabling use in AC-coupled or floating signal paths without polarity concerns.
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C), has matte tin-plated leads, and uses glass-passivated junctions for stable long-term reliability. The SMC package provides low thermal resistance (RθJL = 15 °C/W) and supports 200 A non-repetitive forward surge (IFSM) only in unidirectional variants - not applicable to SMCJ90CAHM3/H.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 100 V / 111 V at 1 mA test current - Ensures predictable, repeatable avalanche initiation across production lots. |
| VC @ IPPM | 146 V at 10.3 A (10/1000 μs) - Clamping voltage seen by protected IC during worst-case surge; limits stress on downstream components. |
| PPPM | 1500 W - Peak transient power dissipation capability; determines survivability against IEC 61000-4-5 Level 4 surges. |
| TJ max | +150 °C - Maximum junction temperature; sets upper limit for thermal design and ambient derating curves. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads; used to calculate steady-state temperature rise. |
| Package | SMC (DO-214AB) - Industry-standard surface-mount outline with 2.06 mm lead spacing; compatible with automated pick-and-place and reflow. |
Pinout & Package
SMCJ90CAHM3/H is housed in a 2-terminal SMC (DO-214AB) package with no polarity marking - consistent with bidirectional construction. Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; surge current flows bidirectionally through the same avalanche junction structure. |
| Case (body) | Thermal and mechanical interface | Plastic body transfers heat to PCB copper pads; no electrical connection - isolated from circuit ground or signal reference. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and infotainment systems. |
| Halogen-free & RoHS-compliant (HM3) | Meets JEDEC J-STD-208 material restrictions and EU RoHS Directive 2011/65/EU - enables compliance in global automotive and industrial supply chains. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR = 46 V) and higher energy absorption efficiency versus legacy TVS devices. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - reduces manufacturing overhead and avoids moisture-induced popcorning. |
| Glass passivated junction | Provides stable leakage performance over time and temperature, minimizing drift in standby power budgets for always-on sensor nodes. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and MEMS pressure sensors from load dump and ISO 7637-2 pulses in engine bay environments. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning ICs. Use Value: Maintains signal integrity under 100 V/100 ms load dump events while surviving repeated 1500 W surges - validated per AEC-Q101 stress profiles. | Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges and EFT bursts. IC Role / Device Role / Timing Role: Primary overvoltage protector on input terminals, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Limits clamped voltage to ≤146 V during 1 kV/500 A IEC 61000-4-5 surges - preventing damage to precision op-amps and ADC front-ends. |
| Telecom Line Card Protection | Consumer Appliance Motor Drive |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges entering via RJ-45 jacks in outdoor network equipment. IC Role / Device Role / Timing Role: First-stage transient suppressor on differential pairs, preceding gas discharge tubes and common-mode chokes in multi-stage protection schemes. Use Value: Responds in <1 ps to clamp transients before secondary protectors activate - critical for preserving gigabit data integrity. | Use Scenario: Guarding microcontroller GPIOs and gate drivers in washing machine motor control boards against commutation spikes from brushed DC motors. IC Role / Device Role / Timing Role: Localized clamp on MCU reset and enable lines, placed adjacent to connectors and relays to minimize inductive loop area. Use Value: Withstands 200 A single-half-sine surges (per unidirectional rating basis) and maintains <1 μA leakage at 90 V - ensuring low-power sleep mode stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CAHE3/A | Lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 110 °C/W), RoHS-compliant but not halogen-free. | Targeted at space-constrained consumer electronics where full 1500 W surge immunity is not required. | Select when board area is critical and surge threat level is limited to IEC 61000-4-5 Level 2. |
| SMCJ90AHE3/H | Unidirectional variant with cathode band marking; identical VWM/VC/PPPM, but asymmetric clamping behavior and 3.5 V forward voltage at 100 A. | Suitable only for DC-biased lines where polarity is fixed and forward conduction may be leveraged. | Choose only if system architecture guarantees unidirectional surge polarity and requires lower forward drop during fault conditions. |
Compared with SMBJ90CAHE3/A and SMCJ90AHE3/H, the SMCJ90CAHM3/H uniquely combines 1500 W surge capacity, bidirectional symmetry, AEC-Q101 qualification, and halogen-free compliance - making it the preferred choice for high-reliability automotive and industrial designs requiring full IEC 61000-4-5 Level 4 immunity.
Availability
SMCJ90CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC analog input stages, and telecom line card surge mitigation requiring stable component supply across extended product lifecycles.
Supply support for SMCJ90CAHM3/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, 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 robustness against ESD, EFT, and lightning surges is mandatory.
FAQ
What does the "HM3" suffix indicate in SMCJ90CAHM3/H?
The "HM3" suffix in SMCJ90CAHM3/H denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-208 requirements, plus AEC-Q101 qualification for automotive applications. It also specifies tape-and-reel packaging (H = 7-inch reel, 850 units), distinguishing it from commercial-grade M3 or HE3 variants. This makes SMCJ90CAHM3/H suitable for Tier-1 automotive supply chains requiring full material compliance documentation.
Is SMCJ90CAHM3/H bidirectional, and how does that affect its use in circuit design?
Yes, SMCJ90CAHM3/H is explicitly bidirectional, as confirmed by the "CA" suffix and absence of polarity marking. This allows placement on AC-coupled lines, floating differential pairs, or any node where voltage transients may occur with either polarity - eliminating need for orientation checks during assembly. Unlike unidirectional variants, SMCJ90CAHM3/H provides identical clamping behavior in both directions, simplifying protection schematics for balanced interfaces like RS-485 or Ethernet PHYs.
What is the maximum clamping voltage of SMCJ90CAHM3/H, and under what test condition is it specified?
The maximum clamping voltage of SMCJ90CAHM3/H is 146 V, measured at a peak pulse current (IPPM) of 10.3 A using the standardized 10/1000 μs double-exponential surge waveform. This value represents the worst-case voltage imposed on protected circuitry during a full-energy transient event and is critical for verifying margin against downstream IC absolute maximum ratings - especially for 100 V-rated microcontrollers or analog front-ends.
Can SMCJ90CAHM3/H be used in place of a unidirectional TVS like SMCJ90AHE3/H?
No - SMCJ90CAHM3/H is not a direct replacement for unidirectional parts like SMCJ90AHE3/H due to fundamental differences in conduction behavior. While both share identical VWM and PPPM, the unidirectional variant exhibits forward voltage drop (~3.5 V at 100 A) and asymmetric clamping, whereas SMCJ90CAHM3/H clamps symmetrically in both directions with no defined forward state. Substitution requires schematic review to ensure polarity independence and absence of DC bias conflicts.
What thermal derating applies to SMCJ90CAHM3/H above 25 °C ambient temperature?
SMCJ90CAHM3/H must be derated linearly above 25 °C ambient per Figure 2 in the Vishay datasheet (Document 88394). At 75 °C ambient, its peak pulse power drops to ~1125 W (75% of rated 1500 W); at 125 °C, it falls to ~750 W (50%). This derating stems from junction-to-ambient thermal resistance (RθJA = 75 °C/W) and is mandatory for reliable operation in engine control units or enclosed industrial enclosures where sustained high ambient temperatures occur.
SMCJ90CAHM3/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:
- 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:
- 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/H FAQ
1.How can I place an order for SMCJ90CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90CAHM3/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/H reliable?
The price and inventory of SMCJ90CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMCJ90CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90CAHM3/H?
SMCJ90CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90CAHM3/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/H?
For technical support, including SMCJ90CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90CAHM3/H requirements.
6.How does Aetrix verify that SMCJ90CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ90CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMCJ90CAHM3/H?
All SMCJ90CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90CAHM3/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/H part is unused and in its original packaging.
Return procedure for SMCJ90CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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