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Vishay General Semiconductor - Diodes Division 1.5SMC75AHE3_A/H
- Part No.:
- 1.5SMC75AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75AHE3_A/H.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,390
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Product details
Overview
1.5SMC75AHE3_A/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 75 V standoff voltage (VWM), 71.3–78.8 V breakdown voltage (VBR) at 1 mA, and 104 V clamping voltage (VC) at 14.6 A peak pulse current. It delivers 1500 W peak pulse power (10/1000 μs), supports automotive-grade reliability via AEC-Q101 qualification, and protects MOSFETs and ICs against lightning-induced transients in power supply rails.
For engineers reviewing the 1.5SMC75AHE3_A/H datasheet, 1.5SMC75AHE3_A/H pinout, 1.5SMC75AHE3_A/H application, or 1.5SMC75AHE3_A/H equivalent, key selection criteria include clamping voltage margin vs. protected device's absolute maximum rating, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking (cathode band), and compliance with UL 497B and JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 μA leakage at 64.1 V), but triggers avalanche conduction when transient voltage exceeds its breakdown threshold, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance.
The 1.5SMC75AHE3_A/H is rated for -65 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and uses matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards - enabling robust automated placement in automotive and industrial PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64.1 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for protected line's nominal operating voltage. |
| VBR (Breakdown Voltage) | 71.3–78.8 V at 1 mA - Avalanche onset range; defines minimum overvoltage level that initiates clamping action. |
| VC (Clamping Voltage) | 104 V at IPPM = 14.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; must be below downstream device's absolute max rating. |
| PPPM (Peak Pulse Power) | 1500 W - Surge energy handling capability under standardized 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads; determines derating above 25 °C ambient. |
| TJ max. | +150 °C - Maximum allowable junction temperature; constrains sustained power dissipation and layout thermal design. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including engine control units and ADAS power supplies per stress test requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads; cathode indicated by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential rail in unidirectional configuration; not used for clamping in normal operation. |
| Cathode | Current exit terminal during reverse avalanche | Connected to protected line (e.g., 48 V rail); carries full surge current to ground during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against high-energy transients such as ISO 7637-2 Pulse 5a without requiring parallel devices. |
| AEC-Q101 qualified | Validated for automotive under-hood and chassis applications where temperature cycling and vibration reliability are critical. |
| Glass passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift versus epoxy-passivated alternatives. |
| MSL Level 1 (260 °C peak) | Supports single-reflow Pb-free assembly without moisture sensitivity concerns, eliminating bake-out steps in production. |
| UL 497B recognized (QVGQ2) | Meets safety agency requirements for telecom and industrial signal/power line protectors, simplifying end-equipment certification. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 48 V battery-supplied ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges exceeding 80 V. Use Value: Clamps to 104 V at 14.6 A, maintaining safe margin below 120 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding 24 V digital input modules in factory automation against induced surges from relay coil switching. IC Role / Device Role / Timing Role: Standoff-rated TVS on field-side inputs to absorb repetitive 1 kV/500 A transients per IEC 61000-4-4. Use Value: 1500 W rating allows single-device protection without derating penalties in high-duty-cycle environments. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing PoE-powered equipment front-end against lightning-induced surges on 48 V DC feeds. IC Role / Device Role / Timing Role: Primary-level TVS on DC input before DC-DC conversion, coordinated with secondary-side MOVs. Use Value: Low clamping ratio (VC/VBR ≈ 1.46) minimizes let-through energy to downstream filtering stages. |
Use Scenario: Shielding BLDC motor controller gate drivers from inductive kickback during PWM commutation. IC Role / Device Role / Timing Role: Localized TVS across half-bridge high-side FET source-drain to suppress VDS spikes. Use Value: Fast response time (<1 ns) prevents gate oxide damage while RθJL = 15 °C/W supports localized thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/52 | Lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 85 °C/W), same VWM/VBR range | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load dump | Select only when space-constrained and surge energy ≤600 W; verify thermal margin with reduced pad area. |
| 1.5KE75A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 qualification or MSL Level 1 rating | Not suitable for automated SMT lines or automotive under-hood use; requires wave soldering | Choose only for legacy through-hole designs or non-automotive industrial prototypes where reflow compatibility is irrelevant. |
Compared with SMBJ75A-E3/52 and 1.5KE75A, the 1.5SMC75AHE3_A/H uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and SMC package manufacturability - making it the preferred choice for high-reliability automotive and industrial SMT applications demanding full IEC 61000-4-5 Level 4 compliance.
Availability
1.5SMC75AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial PLC inputs, telecom DC feeds, and consumer appliance motor drives requiring stable component supply with guaranteed long-term continuity.
Supply support for 1.5SMC75AHE3_A/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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where compact size, high surge immunity, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC75AHE3_A/H at its rated peak pulse current?
The 1.5SMC75AHE3_A/H has a maximum clamping voltage (VC) of 104 V at its rated peak pulse current (IPPM) of 14.6 A under a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8 mm × 8 mm copper pads) and defines the highest voltage the protected circuit will experience during a full-rated surge event. Designers must ensure this clamping level remains safely below the absolute maximum voltage rating of downstream components.
Is the 1.5SMC75AHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC75AHE3_A/H is AEC-Q101 qualified and specifically designated for automotive use, as indicated by the "HE3" suffix and revision code "_A/H". It has passed stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life required for under-hood and chassis-mounted electronics. Its 1500 W surge rating and -65 °C to +150 °C operating range make it appropriate for protecting 48 V battery systems and ADAS power supplies.
What does the "HE3" and "_A/H" suffix mean in 1.5SMC75AHE3_A/H?
In 1.5SMC75AHE3_A/H, "HE3" denotes RoHS-compliant and AEC-Q101 qualified construction, while "_A/H" specifies the revision level ("A") and packaging format ("H" = 7-inch tape-and-reel, 850 units per reel). The "A" revision aligns with devices rated for 6.8 V to 220 V VWM and confirms compliance with the latest Vishay 1.5SMC series specification (Document Number 88303, Revision 09-Mar-2026).
How does the thermal performance of the 1.5SMC75AHE3_A/H affect PCB layout?
The 1.5SMC75AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8 mm × 8 mm copper pads per terminal. To maintain safe junction temperatures under repeated surges, designers must allocate sufficient copper area and consider thermal vias beneath the cathode/anode pads. Reducing pad size increases RθJA and may require derating IPPM above 25 °C ambient per Figure 2 in the datasheet.
Can the 1.5SMC75AHE3_A/H be used in bidirectional configurations?
No, the 1.5SMC75AHE3_A/H is a unidirectional TVS diode, as confirmed by its part number ending in "A" (not "CA") and explicit designation in Vishay documentation. Bidirectional variants use the "CA" suffix (e.g., 1.5SMC75CA). Using the 1.5SMC75AHE3_A/H in reverse-biased configurations risks permanent failure due to lack of symmetrical avalanche characteristics; always select the CA version for AC-line or differential-signal protection.
1.5SMC75AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC75AHE3_A/H FAQ
1.How can I place an order for 1.5SMC75AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75AHE3_A/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 1.5SMC75AHE3_A/H reliable?
The price and inventory of 1.5SMC75AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC75AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75AHE3_A/H?
1.5SMC75AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75AHE3_A/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 1.5SMC75AHE3_A/H?
For technical support, including 1.5SMC75AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC75AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75AHE3_A/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 1.5SMC75AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC75AHE3_A/H?
All 1.5SMC75AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75AHE3_A/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 1.5SMC75AHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC75AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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