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Vishay General Semiconductor - Diodes Division 1.5SMC75AHE3_A/I
- Part No.:
- 1.5SMC75AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75AHE3_A/I.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,607
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Product details
Overview
1.5SMC75AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 75 V breakdown voltage (VBR = 71.3–78.8 V at IT = 1.0 mA), 64.1 V stand-off voltage (VWM), and clamps transients to ≤104 V at 14.6 A peak pulse current (IPPM) under 10/1000 µs waveform - used to protect automotive sensor signal lines, power rails, and MOSFET gate drivers against lightning-induced surges and inductive switching spikes.
For engineers reviewing the 1.5SMC75AHE3_A/I datasheet, 1.5SMC75AHE3_A/I pinout, 1.5SMC75AHE3_A/I application, or 1.5SMC75AHE3_A/I equivalent, this part delivers AEC-Q101 qualification, 1500 W peak pulse power, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for automotive-grade ESD/surge protection in harsh environments with tight thermal constraints.
Technical Context
The 1.5SMC75AHE3_A/I operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable, repeatable clamping behavior. Its 10/1000 µs pulse response enables suppression of fast-rising transients while sustaining 1500 W peak power without degradation when mounted on 8.0 mm × 8.0 mm copper pads.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation up to TJ = +150 °C. The cathode-band polarity marking ensures correct orientation during automated placement, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V at IT = 1.0 mA - defines reliable avalanche initiation threshold for consistent clamping onset |
| VWM | 64.1 V - maximum continuous reverse voltage before leakage exceeds 1.0 µA; sets safe operating margin below VBR |
| VC @ IPPM | ≤104 V at IPPM = 14.6 A (10/1000 µs) - actual clamped voltage seen by protected IC/MOSFET during surge event |
| PPPM | 1500 W - peak transient energy absorption capability without failure; validated per Fig. 1 derating curve |
| IFSM | 200 A (8.3 ms half-sine) - surge current handling for unidirectional forward conduction during fault conditions |
| TJ max. | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; supports standard reflow without baking |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads. Cathode identified by black band; anode is unmarked end. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal for clamping | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode (unbanded end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete surge current path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in 12 V/24 V vehicle electrical systems |
| Glass passivated chip junction | Ensures long-term stability and low parameter drift across temperature and lifetime |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for downstream ICs |
| MSL Level 1, LF peak 260 °C | Compatible with standard lead-free reflow profiles without preconditioning |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp negative-going spikes and positive surges above VWM. Use Value: Limits voltage seen by transceiver IC to ≤104 V, preventing latch-up or permanent damage during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding 24 V DC input rails in PLC modules and motor drives against inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Mounted across rail-to-ground to absorb repetitive 1500 W pulses without thermal runaway. Use Value: Maintains system uptime by preventing overvoltage shutdowns and MOSFET failures during frequent switching cycles. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Paired with GDT or MOV in hybrid protection network; handles fast-rising edge of surge before slower elements engage. Use Value: Responds in <1 ps to limit initial voltage spike, reducing stress on secondary protection and enabling smaller overall footprint. |
Use Scenario: Input-stage surge suppression in AC/DC adapters for smart home devices subjected to mains-borne transients. IC Role / Device Role / Timing Role: First-line defense on primary-side rectified DC bus, clamping switch-mode transformer leakage spikes. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) without derating or parallel devices. |
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 (DO-214AA) package, same VBR/VWM range but higher clamping voltage (121 V @ 9.3 A) | Not AEC-Q101 qualified; suitable for commercial-grade consumer/industrial use only | Select when cost or board space is constrained and 1500 W rating is not required |
| 1.5KE75A-T | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly and higher RθJA (100 °C/W) | Limited to prototyping or legacy through-hole designs; lacks automotive qualification | Choose only for manual assembly or where thermal mass of leaded package improves transient dissipation in low-volume builds |
Compared with SMBJ75A-E3/52 and 1.5KE75A-T, the 1.5SMC75AHE3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMC package compatibility with automated manufacturing - making it the preferred choice for production automotive and industrial SMT designs requiring robust, validated surge immunity.
Availability
1.5SMC75AHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power rail clamping, and telecom interface surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC75AHE3_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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5SMC Series was developed specifically for surface-mount transient suppression in space-constrained, high-surge environments - emphasizing AEC-Q101 compliance, repeatable clamping, and compatibility with modern SMT assembly processes.
FAQ
What is the clamping voltage of the 1.5SMC75AHE3_A/I under standard test conditions?
The 1.5SMC75AHE3_A/I clamps to a maximum of 104 V when subjected to its rated peak pulse current of 14.6 A using the 10/1000 µs waveform. This value is measured at TA = 25 °C with device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC standards. The 1.5SMC75AHE3_A/I maintains this clamping performance across its specified operating temperature range, ensuring predictable protection behavior in real-world automotive and industrial deployments.
Is the 1.5SMC75AHE3_A/I AEC-Q101 qualified, and what does that mean for automotive use?
Yes, the 1.5SMC75AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in the 1.5SMC Series datasheet (Doc. #88303). This qualification validates its reliability for automotive applications including engine control units, ADAS sensors, and body electronics - covering stress tests for temperature cycling, humidity, mechanical shock, and surge endurance. The 1.5SMC75AHE3_A/I meets these requirements without derating, enabling direct integration into production vehicle ECUs.
How does the 1.5SMC75AHE3_A/I differ from bidirectional TVS diodes like 1.5SMC75CA?
The 1.5SMC75AHE3_A/I is unidirectional and features a cathode band for polarity-sensitive placement, allowing it to block forward current up to 200 A (IFSM) while clamping reverse transients. In contrast, 1.5SMC75CA is bidirectional with symmetric clamping in both directions and no polarity marking. The 1.5SMC75AHE3_A/I is selected when protecting DC rails or single-polarity signal lines where forward conduction must be controlled - such as 12 V battery inputs or sensor output lines referenced to ground.
What is the thermal resistance of the 1.5SMC75AHE3_A/I, and how does it affect PCB layout?
The 1.5SMC75AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W, measured on the recommended 8.0 mm × 8.0 mm copper pad layout. To maintain TJ ≤ 150 °C during repetitive surges, PCB layout must replicate this pad area for each terminal and avoid excessive trace length or narrow routing. The 1.5SMC75AHE3_A/I's low RθJL also supports heat transfer into internal ground planes via thermal vias under the leads.
Can the 1.5SMC75AHE3_A/I be used in place of older through-hole TVS diodes like 1N6277A?
The 1.5SMC75AHE3_A/I provides equivalent electrical performance (VBR, VC, PPPM) to 1N6277A but in an SMC (DO-214AB) surface-mount package - enabling automated assembly, higher board density, and improved thermal coupling to PCB copper. Unlike 1N6277A, the 1.5SMC75AHE3_A/I is AEC-Q101 qualified and rated for MSL Level 1 reflow. However, direct replacement requires verifying pad layout compatibility and confirming that the lower profile (2.62 mm height) meets mechanical clearance requirements in the target design.
1.5SMC75AHE3_A/I 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/I FAQ
1.How can I place an order for 1.5SMC75AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75AHE3_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 1.5SMC75AHE3_A/I reliable?
The price and inventory of 1.5SMC75AHE3_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 1.5SMC75AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC75AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75AHE3_A/I?
1.5SMC75AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75AHE3_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 1.5SMC75AHE3_A/I?
For technical support, including 1.5SMC75AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75AHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC75AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75AHE3_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 1.5SMC75AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC75AHE3_A/I?
All 1.5SMC75AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75AHE3_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 1.5SMC75AHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC75AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75AHE3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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