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Vishay General Semiconductor - Diodes Division SMCJ7.5CAHE3_A/I
- Part No.:
- SMCJ7.5CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.5CAHE3_A/I.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,044
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Product details
Overview
SMCJ7.5CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMC (DO-214AB) package, designed for clamping voltage transients on signal and power lines. It features a 7.5 V stand-off voltage (VWM), 12.9 V maximum clamping voltage (VC) at 116.3 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform. It is AEC-Q101 qualified and used for automotive sensor line protection.
For engineers reviewing the SMCJ7.5CAHE3_A/I datasheet, SMCJ7.5CAHE3_A/I pinout, SMCJ7.5CAHE3_A/I application, or SMCJ7.5CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics, and it delivers sub-nanosecond response time to transient events such as ESD, inductive switching spikes, and lightning surges.
The SMCJ7.5CAHE3_A/I is rated for -55 °C to +150 °C operating junction temperature and exhibits a typical thermal resistance of 75 °C/W (junction-to-ambient) when mounted on standard 8.0 mm × 8.0 mm copper pads. Its 0.067 %/°C temperature coefficient of VBR supports predictable voltage tolerance across temperature extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum reverse stand-off voltage before clamping begins; defines safe operating margin below breakdown |
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA - Verified breakdown range ensures reliable triggering without premature conduction |
| VC @ IPPM | 12.9 V at 116.3 A - Clamping voltage under 10/1000 μs surge; limits downstream IC stress during transients |
| PPPM | 1500 W - Peak pulse power handling capacity; enables robust protection against high-energy surges |
| ID @ VWM | 100 μA - Low leakage current preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - Extended junction temperature rating supports under-hood automotive deployment |
| MSL Level | Level 1 per J-STD-020 - No floor life limitation; compatible with standard reflow processes up to 260 °C peak |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current from either polarity; forms symmetrical clamping path with cathode |
| Cathode | Transient current entry (bidirectional) | Completes bidirectional clamping loop; no band marking distinguishes polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable, repeatable avalanche performance over lifetime and temperature cycling |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving system-level ESD immunity |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures |
| J-STD-020 MSL Level 1 | Enables direct placement into high-temperature reflow without baking or special handling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus lines and analog sensor inputs (e.g., temperature, pressure) in engine control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed directly at connector interface to shunt transients before reaching MCU or signal conditioner. Use Value: Limits induced voltage to ≤12.9 V during 116.3 A surges, preventing latch-up or damage to 3.3 V/5 V automotive microcontrollers. | Use Scenario: Safeguarding digital input/output terminals of programmable logic controllers against field-wiring transients and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS installed between terminal block and isolation barrier to absorb ±1 kV/500 A surges per IEC 61000-4-5. Use Value: Maintains 7.5 V stand-off while clamping to 12.9 V, preserving signal fidelity and enabling reliable 24 V DC input detection. |
| Consumer Power Adapter Surge Suppression | Telecom Line Interface Protection |
Use Scenario: Secondary-side transient suppression in AC/DC adapters for USB-C PD chargers exposed to mains-borne surges. IC Role / Device Role / Timing Role: Bidirectional TVS across output rails to clamp common-mode and differential-mode overvoltage events. Use Value: Withstands 1500 W peak pulse power and maintains <100 μA leakage at 7.5 V, minimizing no-load power loss. | Use Scenario: Protection of Ethernet PHY interface pins (e.g., RJ45 magnetics secondary side) against ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to PHY IC to suppress ±8 kV contact ESD (IEC 61000-4-2) without signal distortion. Use Value: Symmetrical clamping ensures equal protection for TX+/TX− and RX+/RX− pairs; 12.9 V VC prevents PHY latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC7.5CA | Lower PPPM (600 W), same VWM (7.5 V), smaller SMA package | Limited to lower-energy transients; not AEC-Q101 qualified | Select when space-constrained and automotive qualification is unnecessary |
| SMCJ7.5CAHM3_A/I | Identical electrical specs; halogen-free molding compound instead of standard RoHS-compliant | Required for strict environmental compliance (e.g., EU automotive Tier 1 supply chains) | Select when halogen-free material declaration is mandatory per procurement spec |
Compared with SAC7.5CA, the SMCJ7.5CAHE3_A/I delivers 2.5× higher surge power handling and automotive qualification; compared with SMCJ7.5CAHM3_A/I, it uses standard RoHS-compliant packaging-making it suitable for cost-sensitive, non-halogen-restricted designs requiring AEC-Q101 validation.
Availability
SMCJ7.5CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer power adapter secondary-side protection, and telecom line interface circuits requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCJ7.5CAHE3_A/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 engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where robustness, AEC-Q101 compliance, and precise clamping performance are critical.
FAQ
What is the clamping voltage of the SMCJ7.5CAHE3_A/I under a 10/1000 μs surge?
The SMCJ7.5CAHE3_A/I has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 116.3 A using the standardized 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and verified at TA = 25 °C with specified mounting conditions (0.31" × 0.31" copper pads). The SMCJ7.5CAHE3_A/I maintains this clamping performance across its full operating temperature range.
Is the SMCJ7.5CAHE3_A/I suitable for automotive applications?
Yes, the SMCJ7.5CAHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It meets stringent reliability requirements for under-hood and cabin electronics, including temperature cycling, humidity bias, and mechanical shock testing. Its 1500 W PPPM and ±150 °C TJ rating make the SMCJ7.5CAHE3_A/I appropriate for engine control units, ADAS sensors, and infotainment power rails.
Does the SMCJ7.5CAHE3_A/I have polarity markings?
No, the SMCJ7.5CAHE3_A/I is a bidirectional TVS and carries no cathode band or polarity marking on the SMC (DO-214AB) package. Its symmetrical construction allows installation in either orientation across protected lines. This contrasts with unidirectional variants like SMCJ7.5A, which feature a visible cathode band and must be oriented correctly relative to circuit ground.
What is the thermal resistance of the SMCJ7.5CAHE3_A/I in standard mounting?
The SMCJ7.5CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad layout per terminal. Its junction-to-lead resistance (RθJL) is 15 °C/W. These values assume no additional heatsinking and define the maximum continuous power dissipation (PD = 6.5 W at TA = 50 °C) and transient thermal limits for the SMCJ7.5CAHE3_A/I.
How does the SMCJ7.5CAHE3_A/I differ from the SMCJ7.5A variant?
The SMCJ7.5CAHE3_A/I is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas the SMCJ7.5A is unidirectional, features a cathode band, and conducts only in reverse bias. Electrically, the SMCJ7.5CAHE3_A/I has identical VWM (7.5 V), VBR (8.33–9.21 V), and VC (12.9 V) but differs in leakage (100 μA vs. 100 μA for SMCJ7.5A at VWM) and lacks forward voltage (VF) specification since it does not conduct DC forward current like the unidirectional version. The SMCJ7.5CAHE3_A/I is also AEC-Q101 qualified, unlike base SMCJ7.5A.
SMCJ7.5CAHE3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ7.5CAHE3_A/I FAQ
1.How can I place an order for SMCJ7.5CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.5CAHE3_A/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 SMCJ7.5CAHE3_A/I reliable?
The price and inventory of SMCJ7.5CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.5CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ7.5CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.5CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.5CAHE3_A/I?
SMCJ7.5CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.5CAHE3_A/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 SMCJ7.5CAHE3_A/I?
For technical support, including SMCJ7.5CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.5CAHE3_A/I requirements.
6.How does Aetrix verify that SMCJ7.5CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ7.5CAHE3_A/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 SMCJ7.5CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ7.5CAHE3_A/I?
All SMCJ7.5CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.5CAHE3_A/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 SMCJ7.5CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ7.5CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.5CAHE3_A/I Tags
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