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Vishay General Semiconductor - Diodes Division SMCJ90AHM3/H
- Part No.:
- SMCJ90AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90AHM3/H.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,484
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Product details
Overview
SMCJ90AHM3/H 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 operates across –55 °C to +150 °C junction temperature, targeting automotive-grade ESD and load-dump protection in power rails.
For engineers reviewing the SMCJ90AHM3/H datasheet, SMCJ90AHM3/H pinout, SMCJ90AHM3/H application, or SMCJ90AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant HM3 suffix, 1.0 μA max reverse leakage at VWM, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads per JEDEC standards.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance, enabling effective clamping of transient overvoltages induced by inductive switching or lightning surges. Its unidirectional polarity-marked with cathode band-supports DC-biased protection paths without AC coupling complications.
The device meets MSL level 1 per J-STD-020 with 260 °C lead-free reflow peak, and thermal resistance values (RθJA = 75 °C/W, RθJL = 15 °C/W) confirm suitability for moderate-power board-level protection without active cooling. It is not intended for bidirectional signal-line protection-bidirectional variants use CA suffix (e.g., SMCJ90CA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit's normal DC rail. |
| VBR min/max | 100 V / 111 V at 1 mA test current - Confirms reliable turn-on threshold under defined conditions; ensures consistent clamping onset across production lots. |
| VC @ IPPM | 146 V at 10.3 A (10/1000 μs) - Clamped voltage seen by downstream ICs during worst-case surge; defines maximum stress on protected components. |
| PPPM | 1500 W - Peak transient energy absorption capability; determines survivability against ISO 7637-2 Pulse 1/2/5a or IEC 61000-4-5 surges. |
| ID @ VWM | ≤1.0 μA - Reverse leakage at rated standoff; negligible power loss and minimal impact on high-impedance sensor or reference circuits. |
| TJ max | +150 °C - Maximum junction temperature rating; supports under-hood automotive deployment and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with IPC-7351B land patterns. |
Pinout & Package
SMCJ90AHM3/H uses the SMC (DO-214AB) package: a rectangular, molded plastic case with two coplanar matte tin-plated leads, cathode identified by a visible band on the body. Leads meet J-STD-002 and JESD 22-B102 solderability requirements and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-potential node; completes conduction path during reverse-biased transients. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V battery rail); polarity marking ensures correct orientation during placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics; supports PPAP documentation and long-term reliability under thermal cycling. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance mandates for EU, China RoHS, and automotive OEM sustainability programs without compromising surge performance. |
| 1500 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) up to 120 V, protecting downstream MOSFETs and microcontrollers. |
| Fast response time < 1 ns | Clamps voltage spikes before sensitive logic or analog circuitry sustains damage; critical for protecting CAN transceivers and ADC inputs. |
| MSL Level 1 moisture sensitivity | Allows indefinite floor life before reflow; eliminates baking requirement and simplifies SMT line logistics for high-volume manufacturing. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and jump-start surges per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ground, clamping transients above 90 V while remaining inactive during nominal operation. Use Value: Limits peak voltage to 146 V during 10.3 A surge, preventing latch-up or gate oxide rupture in MCU power management ICs. | Use Scenario: Safeguarding IGBT gate drivers and bus voltage monitors in variable-frequency drives exposed to inductive kickback. IC Role / Device Role / Timing Role: Mounted across DC link capacitor terminals to clamp switching-induced overshoot on 40–100 V bus rails. Use Value: Absorbs 1500 W transient energy without degradation, maintaining system uptime and reducing need for oversized capacitors. |
| Telecom Power Supply Input | Consumer Appliance Main Board |
Use Scenario: Secondary-side surge suppression on 48 V PoE-powered equipment subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Front-end TVS on DC input stage, coordinated with upstream MOVs and common-mode chokes for staged protection. Use Value: Provides precise 90 V clamping threshold aligned with 48 V nominal supply, minimizing let-through energy to downstream DC/DC converters. | Use Scenario: Overvoltage protection on mainboard 12 V fan or solenoid driver outputs in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Localized TVS at actuator interface to suppress back-EMF from brushed DC motors and relays. Use Value: Enables compact layout with SMC package and withstands repeated 200 A surge current (IFSM), extending product service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90AHE3/A | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA), same VWM/VBR/VC specs. | Not suitable for ISO 7637-2 Pulse 5a; limited to lower-energy transients like ESD or EFT. | Select when space constraints dominate and surge threat level is below 1500 W. |
| SMCJ90A-M3/57T | Same electrical specs and SMC package, but commercial-grade (non-AEC-Q101) and standard RoHS (not halogen-free). | Lacks automotive qualification; acceptable for industrial or consumer applications where AEC-Q101 is not mandated. | Choose for cost-sensitive non-automotive designs requiring identical surge performance and footprint. |
Compared with SMCJ90AHM3/H, SMAJ90AHE3/A offers reduced surge capacity in a smaller package, while SMCJ90A-M3/57T matches performance but omits AEC-Q101 and halogen-free compliance-making SMCJ90AHM3/H the only option meeting full automotive environmental and reliability requirements.
Availability
SMCJ90AHM3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive DC bus safeguarding, telecom PoE input conditioning, and consumer appliance main board actuator interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ90AHM3/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 was developed for high-power transient suppression in harsh environments-including automotive, industrial, and telecom-where robustness, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What does the "HM3" suffix indicate in SMCJ90AHM3/H?
The "HM3" suffix in SMCJ90AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive environmental standards and reliability testing, distinguishing it from commercial-grade variants like SMCJ90A-M3/57T. This makes SMCJ90AHM3/H suitable for under-hood and safety-critical vehicle systems where material content and long-term stability are rigorously controlled.
Can SMCJ90AHM3/H be used in bidirectional signal-line protection?
No, SMCJ90AHM3/H is strictly unidirectional and must not be used for bidirectional signal-line protection. Its cathode-band marking and internal structure support clamping only in reverse bias. For bidirectional applications-such as RS-485 or USB data lines-use the CA-suffixed variant SMCJ90CA, which provides symmetrical clamping in both polarities and is explicitly characterized for that configuration in the datasheet.
What is the maximum clamping voltage VC for SMCJ90AHM3/H, and how is it measured?
The maximum clamping voltage VC for SMCJ90AHM3/H is 146 V, measured at 10.3 A peak pulse current using the standardized 10/1000 μs double-exponential waveform per ANSI/IEEE C62.35. This value represents the highest voltage imposed on the protected circuit during a worst-case transient event and is guaranteed across temperature and production lot variations per Vishay's characterization methodology.
How does the SMC (DO-214AB) package of SMCJ90AHM3/H affect PCB layout?
The SMC (DO-214AB) package of SMCJ90AHM3/H requires a minimum pad layout of 0.31" × 0.31" (8.0 mm × 8.0 mm) copper area per terminal to achieve rated 1500 W pulse power dissipation. Smaller pads increase thermal resistance and reduce surge capability. The package's 2.62 mm height and 7.75 mm × 6.22 mm footprint also dictate keep-out zones for adjacent tall components and ensure compatibility with standard SMT pick-and-place nozzles.
Is SMCJ90AHM3/H suitable for protecting a 48 V DC power supply input?
No, SMCJ90AHM3/H is not suitable for protecting a 48 V DC power supply input because its 90 V standoff voltage (VWM) is too high-leaving insufficient margin between nominal rail and clamping onset. For 48 V systems, a TVS with VWM ≤ 36 V (e.g., SMCJ36A) is recommended to ensure reliable clamping before overvoltage damages downstream regulators or controllers. Using SMCJ90AHM3/H would allow transients up to 90 V to pass unclamped.
SMCJ90AHM3/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:
- 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:
- 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)
SMCJ90AHM3/H FAQ
1.How can I place an order for SMCJ90AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90AHM3/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 SMCJ90AHM3/H reliable?
The price and inventory of SMCJ90AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90AHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ90AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90AHM3/H?
SMCJ90AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90AHM3/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 SMCJ90AHM3/H?
For technical support, including SMCJ90AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90AHM3/H requirements.
6.How does Aetrix verify that SMCJ90AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ90AHM3/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 SMCJ90AHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ90AHM3/H?
All SMCJ90AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90AHM3/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 SMCJ90AHM3/H part is unused and in its original packaging.
Return procedure for SMCJ90AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ90AHM3/H Tags
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