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Vishay General Semiconductor - Diodes Division SMCJ7.5AHM3/I
- Part No.:
- SMCJ7.5AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.5AHM3/I.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,986
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Product details
Overview
SMCJ7.5AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with 12.9 V clamping voltage at 116.3 A surge current, 7.5 V stand-off voltage, and 8.33–9.21 V breakdown range at 1.0 mA test current - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the SMCJ7.5AHM3/I datasheet, SMCJ7.5AHM3/I pinout, SMCJ7.5AHM3/I application, or SMCJ7.5AHM3/I equivalent, key selection criteria include its 1500 W 10/1000 μs surge rating, halogen-free RoHS-compliant HM3 suffix, AEC-Q101 qualification readiness, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for fast response (<1 ps) and low incremental surge resistance. It delivers stable clamping under repetitive transient stress while maintaining ≤100 μA reverse leakage at 7.5 V stand-off voltage.
Thermal performance is defined by 15 °C/W junction-to-lead resistance and 75 °C/W junction-to-ambient (on recommended pad layout), enabling reliable operation from –55 °C to +150 °C junction temperature. Its MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains high-energy transients without failure in automotive load-dump or inductive-switching events |
| Stand-off Voltage (VWM) | 7.5 V - maximum continuous reverse voltage before significant leakage; sets operating margin below breakdown |
| Breakdown Voltage (VBR) | 8.33–9.21 V at 1.0 mA - defines precise clamping initiation threshold for overvoltage protection |
| Clamping Voltage (VC) | 12.9 V at 116.3 A - actual voltage seen by protected circuit during worst-case surge |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 0.320" x 0.246" footprint and matte tin leads |
| Operating Temperature | –55 °C to +150 °C - qualified for under-hood automotive and industrial ambient environments |
| Compliance | Halogen-free, RoHS-compliant, JESD201 Class 2 whisker-resistant - meets automotive supply chain material requirements |
Pinout & Package
Package: SMC (DO-214AB), 2-terminal surface-mount case with cathode band marking on unidirectional variants. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H), 0.320" × 0.246" footprint, 0.126" minimum standoff height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-potential node; completes clamping path during reverse-biased surge |
| Cathode (banded end) | High-side transient input terminal | Connected to protected line (e.g., 12 V rail or sensor input); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power rating | Enables robust protection against ISO 7637-2 Pulse 5a/b (load dump) and IEC 61000-4-5 surges in 12 V systems |
| AEC-Q101 qualification ready (HM3 suffix) | Supports automotive-grade sourcing with traceable manufacturing and extended reliability testing per stress-test protocols |
| Glass-passivated chip junction | Ensures stable VBR tolerance and low leakage across temperature, critical for long-term sensor interface integrity |
| MSL Level 1, 260 °C peak reflow | Eliminates moisture sensitivity concerns and enables standard lead-free SMT assembly without baking |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD or switching noise) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients up to 35 V and 100 ms duration. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between power rail and ground, activated within picoseconds of overvoltage onset. Use Value: Limits rail voltage to ≤12.9 V during surge, preventing damage to downstream DC-DC converters and microcontrollers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC inputs in factory automation. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor installed at sensor connector, shunting ESD and cable-coupled noise to chassis ground. Use Value: Maintains signal fidelity by clamping transients before they distort 0–10 V or 4–20 mA output signals. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-rated TVS on +5 V or +20 V output rail, absorbing flyback spikes from regulator switching or hot-plug events. Use Value: Prevents latch-up or gate oxide rupture in connected SoCs by holding output voltage below 13 V during fault conditions. | Use Scenario: DC power feed protection in PoE-powered base stations where 48 V supply lines are exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-line TVS on 48 V input, coordinated with upstream GDTs to divert energy before reaching DC/DC front-end. Use Value: Achieves IEC 61000-4-5 Level 4 immunity (4 kV line-earth) with minimal voltage overshoot due to low VC and fast response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5AHE3/A | Lower PPPM (400 W), SMA package (smaller thermal mass), same VWM/VBR range | Not suitable for automotive load-dump; limited to low-energy ESD and signal-line protection | Select when board space is constrained and surge energy is <200 W |
| SMCJ7.5A-M3/57T | Same electrical specs and SMC package, but M3 suffix denotes halogen-free RoHS compliance without AEC-Q101 qualification | Lacks automotive qualification documentation; acceptable for industrial/commercial use only | Select for cost-sensitive non-automotive designs requiring identical clamping performance |
Compared with SMAJ7.5AHE3/A and SMCJ7.5A-M3/57T, the SMCJ7.5AHM3/I provides the highest surge robustness (1500 W) and includes AEC-Q101-readiness via HM3 suffix - making it the only choice among the three for automotive power rail protection requiring validated reliability.
Availability
SMCJ7.5AHM3/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power feeders requiring stable component supply with halogen-free, AEC-Q101-aligned sourcing.
Supply support for SMCJ7.5AHM3/I 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 where clamping precision, surge endurance, and qualification compliance are mandatory.
FAQ
What is the clamping voltage of SMCJ7.5AHM3/I at its rated peak pulse current?
The SMCJ7.5AHM3/I has a maximum clamping voltage (VC) of 12.9 V at 116.3 A peak pulse current (IPPM), measured under the standardized 10/1000 μs waveform. This value ensures protected circuits remain below critical voltage thresholds during surge events, and is confirmed in Vishay's Document Number 88394, page 2.
Is SMCJ7.5AHM3/I qualified to AEC-Q101?
The SMCJ7.5AHM3/I uses the HM3 suffix, indicating halogen-free, RoHS-compliant construction with AEC-Q101 qualification readiness. While the base SMCJ7.5A family is AEC-Q101 qualified, the HM3 variant carries the same qualification status per Vishay's ordering information on page 3 of Document 88394 - confirmed by the "(1) AEC-Q101 qualified" footnote.
What does the "I" suffix mean in SMCJ7.5AHM3/I?
The "I" suffix in SMCJ7.5AHM3/I denotes packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3500 units per reel. This is specified in Vishay's Ordering Information table (page 3, Document 88394) and aligns with standard SMT handling requirements for high-volume automated assembly.
Can SMCJ7.5AHM3/I be used in bidirectional applications?
No - SMCJ7.5AHM3/I is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and cathode band marking. Bidirectional variants carry the "CA" suffix (e.g., SMCJ7.5CA). Using SMCJ7.5AHM3/I in bidirectional circuits would result in forward conduction during negative transients, causing failure.
What is the thermal resistance from junction to ambient for SMCJ7.5AHM3/I?
The typical junction-to-ambient thermal resistance (RθJA) for SMCJ7.5AHM3/I is 75 °C/W, measured on the minimum recommended pad layout (0.31" × 0.31" copper pads per terminal). This value is listed in the Thermal Characteristics table on page 3 of Vishay's Document 88394 and informs heatsinking and power derating decisions.
SMCJ7.5AHM3/I 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 116.3A
- 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)
SMCJ7.5AHM3/I FAQ
1.How can I place an order for SMCJ7.5AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.5AHM3/I 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 SMCJ7.5AHM3/I reliable?
The price and inventory of SMCJ7.5AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.5AHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ7.5AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.5AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.5AHM3/I?
SMCJ7.5AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.5AHM3/I 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 SMCJ7.5AHM3/I?
For technical support, including SMCJ7.5AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.5AHM3/I requirements.
6.How does Aetrix verify that SMCJ7.5AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ7.5AHM3/I 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 SMCJ7.5AHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ7.5AHM3/I?
All SMCJ7.5AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.5AHM3/I, 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 SMCJ7.5AHM3/I part is unused and in its original packaging.
Return procedure for SMCJ7.5AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.5AHM3/I Tags
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