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Vishay General Semiconductor - Diodes Division SMCJ9.0AHM3/H
- Part No.:
- SMCJ9.0AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0AHM3/H.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,863
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Product details
Overview
SMCJ9.0AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 9.0 V stand-off voltage (VWM), 15.4 V maximum clamping voltage (VC) at 97.4 A peak pulse current (IPPM), and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs, industrial sensor interfaces, and power supply input stages.
For engineers reviewing the SMCJ9.0AHM3/H datasheet, SMCJ9.0AHM3/H pinout, SMCJ9.0AHM3/H application, or SMCJ9.0AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction (HM3 suffix), low incremental surge resistance, and verified clamping performance under repetitive transients per IEC 61000-4-5.
Technical Context
The SMCJ9.0AHM3/H operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 10.0–11.1 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable leakage (<10 µA at VWM) and fast response (<1 ns), enabling suppression of ESD, lightning-induced surges, and inductive switching spikes before downstream ICs are damaged.
Thermally, it sustains operation from –55 °C to +150 °C junction temperature, with RθJA = 75 °C/W and RθJL = 15 °C/W. The HM3 suffix confirms halogen-free, RoHS-compliant materials and JESD201 Class 2 whisker resistance - critical for automotive and high-reliability industrial deployments where long-term solder joint integrity is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin above 5–8 V nominal rail voltages. |
| VBR (min/max) | 10.0 V / 11.1 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on without premature conduction. |
| VC @ IPPM | 15.4 V at 97.4 A - Clamped voltage during 1500 W transient; limits stress on protected 12 V systems to <1.3× nominal. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 µs waveform; meets Level 4 IEC 61000-4-5 surge immunity requirements. |
| IPPM | 97.4 A - Peak surge current capability; supports protection of 12 V CAN, LIN, or sensor supply lines against 1 kV/2 Ω coupling. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal design; compatible with automated reflow assembly. |
Pinout & Package
SMCJ9.0AHM3/H uses the SMC (DO-214AB) package: a 2-terminal, surface-mount, molded plastic case with matte tin-plated leads. Polarity is marked by a cathode band; the banded end is the cathode (anode is unmarked). Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal per Vishay's thermal recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased anode connection point | Connected to protected line (e.g., 12 V rail); conducts during overvoltage to shunt surge current to ground. |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping loop with minimal inductance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control, ADAS, and body electronics. |
| Halogen-free & RoHS-compliant (HM3) | Meets EU RoHS Directive 2011/65/EU and JEDEC J-STD-20 MSL level 1; eliminates brominated flame retardants for safer recycling and manufacturing. |
| 1500 W peak pulse power | Withstands 10/1000 µs surges up to 1500 W without degradation - sufficient for ISO 7637-2 Pulse 5a (load dump) simulation in 12 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Ensures tight voltage limiting: 15.4 V clamp vs. 10.0–11.1 V breakdown minimizes overvoltage exposure to protected MOSFETs or microcontrollers. |
| Fast response time & low leakage | Sub-nanosecond turn-on and <10 µA reverse leakage at 9.0 V enable protection of high-speed interfaces (e.g., LIN bus) without signal distortion or standby power penalty. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and upstream fuse or DC-DC converter input. Use Value: Clamps 12 V rail to ≤15.4 V during 100+ A surges, preventing damage to LDOs, CAN transceivers, and MCU power domains. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC modules from ESD and cable-coupled noise. IC Role / Device Role / Timing Role: TVS mounted at connector entry point, with short trace to ground plane. Use Value: Limits induced transients to <15.4 V, preserving ADC reference integrity and avoiding false triggers in 0–10 V or 4–20 mA signal chains. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
Use Scenario: Safeguarding AC/DC adapter primary-side rectifier and secondary-side 5/9/12 V outputs against lightning-induced surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Unidirectional TVS on secondary DC output rail, downstream of isolation barrier. Use Value: Absorbs 1500 W surges without failure, maintaining output regulation and preventing latch-up in USB-C PD controllers or charging ICs. | Use Scenario: Protecting -48 V DC telecom feeder lines from induced surges due to nearby lightning strikes or power cross events. IC Role / Device Role / Timing Role: TVS connected between feed line and chassis ground, rated for continuous -48 V bias with margin. Use Value: Withstands repeated 10/1000 µs surges while maintaining <10 µA leakage at -48 V, ensuring no impact on line supervision or battery backup circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0AHE3/A | Lower PPPM (400 W), SMA package (smaller thermal mass), same VWM/VC specs | Not suitable for automotive load dump; limited to low-energy ESD or board-level surges | Select when space-constrained and surge energy <400 W; verify thermal derating for ambient >70 °C. |
| SMCJ9.0A-M3/57T | Same electrical specs and SMC package, but commercial-grade (non-AEC-Q101), M3 halogen-free RoHS only | Lacks automotive qualification; acceptable for industrial or consumer non-safety-critical use | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
Compared with SMAJ9.0AHE3/A and SMCJ9.0A-M3/57T, the SMCJ9.0AHM3/H uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and halogen-free compliance - making it the only option among the three validated for under-hood automotive deployment with full ISO 7637-2 Pulse 5a immunity.
Availability
SMCJ9.0AHM3/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interface modules, and telecom DC power distribution requiring stable component supply across extended temperature and high-reliability operational lifecycles.
Supply support for SMCJ9.0AHM3/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 is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure - prioritizing low clamping voltage, repeatable surge endurance, and qualification-grade process control.
FAQ
What is the clamping voltage of the SMCJ9.0AHM3/H under maximum surge conditions?
The SMCJ9.0AHM3/H has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 97.4 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry sees no more than 15.4 V during worst-case transient events - critical for safeguarding 12 V logic and power components. The SMCJ9.0AHM3/H maintains this clamping performance across its full operating temperature range.
Is the SMCJ9.0AHM3/H qualified for automotive applications?
Yes, the SMCJ9.0AHM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88394. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and surge endurance - validating its suitability for under-hood and chassis-mounted automotive systems such as engine control modules, body control units, and ADAS sensor hubs. The SMCJ9.0AHM3/H meets all requirements for ISO 7637-2 Pulse 5a load dump protection.
How does the HM3 suffix differ from the M3 or E3 suffixes in the SMCJ9.0A family?
The HM3 suffix on SMCJ9.0AHM3/H denotes halogen-free, RoHS-compliant construction *and* AEC-Q101 qualification - distinguishing it from M3 (halogen-free RoHS, commercial grade) and E3 (RoHS-compliant, commercial grade, lead-free). Only HM3 and HE3 variants carry automotive qualification; HM3 adds halogen-free chemistry for enhanced environmental compliance. All three share identical electrical specs and SMC packaging, but only SMCJ9.0AHM3/H satisfies both automotive reliability and green material mandates simultaneously.
What is the thermal resistance and recommended PCB layout for optimal performance of the SMCJ9.0AHM3/H?
The SMCJ9.0AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. For reliable 1500 W surge handling, Vishay specifies mounting on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal - these pads must be directly connected to internal ground or power planes via multiple thermal vias. This layout prevents localized overheating during transient events and ensures the SMCJ9.0AHM3/H remains within its +150 °C TJ limit.
Can the SMCJ9.0AHM3/H be used in bidirectional configurations?
No, the SMCJ9.0AHM3/H is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and presence of a cathode band. Bidirectional operation requires the "CA" variant (e.g., SMCJ9.0CA), which lacks polarity marking and conducts symmetrically in both directions. Using SMCJ9.0AHM3/H in a bidirectional application would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit. Always match the SMCJ9.0AHM3/H to unidirectional DC rails where ground-referenced clamping is intended.
SMCJ9.0AHM3/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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 97.4A
- 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)
SMCJ9.0AHM3/H FAQ
1.How can I place an order for SMCJ9.0AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0AHM3/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 SMCJ9.0AHM3/H reliable?
The price and inventory of SMCJ9.0AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ9.0AHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ9.0AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0AHM3/H?
SMCJ9.0AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0AHM3/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 SMCJ9.0AHM3/H?
For technical support, including SMCJ9.0AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0AHM3/H requirements.
6.How does Aetrix verify that SMCJ9.0AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0AHM3/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 SMCJ9.0AHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ9.0AHM3/H?
All SMCJ9.0AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0AHM3/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 SMCJ9.0AHM3/H part is unused and in its original packaging.
Return procedure for SMCJ9.0AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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