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Vishay General Semiconductor - Diodes Division 1.5SMC75AHE3/57T
- Part No.:
- 1.5SMC75AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75AHE3/57T.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,737
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Product details
Overview
1.5SMC75AHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 75 V standoff voltage (VWM), 71.3–78.8 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), and clamps to ≤104 V at 14.6 A peak pulse current - deployed in automotive ECUs, industrial motor drives, and telecom power supplies.
For engineers reviewing the 1.5SMC75AHE3/57T datasheet, 1.5SMC75AHE3/57T pinout, 1.5SMC75AHE3/57T application, or 1.5SMC75AHE3/57T equivalent, key selection criteria include its AEC-Q101 qualification, SMC (DO-214AB) package with cathode band polarity marking, low incremental surge resistance, and compliance with UL 497B for surge protector classification.
Technical Context
The 1.5SMC75AHE3/57T operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to deliver fast response (<1 ns) and stable clamping under repetitive 10/1000 µs transients. Its thermal resistance (RθJA = 75 °C/W) and maximum junction temperature of 150 °C support reliable operation on standard 8.0 mm × 8.0 mm copper pads.
It is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), exhibits ≤1 µA reverse leakage at 64.1 V, and maintains a temperature coefficient of VBR at +0.105 %/°C - enabling predictable performance across automotive (-40 to +125 °C ambient) and industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64.1 V - Maximum continuous reverse operating voltage before significant conduction begins; defines safe working margin below clamping threshold. |
| VBR (Breakdown Voltage) | 71.3–78.8 V at 1 mA - Confirmed avalanche initiation range; ensures precise, repeatable clamping onset under transient stress. |
| VC (Clamping Voltage) | ≤104 V at 14.6 A IPPM - Measured peak voltage during 1500 W transient; directly limits stress on downstream ICs and MOSFETs. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 µs) - Sustains high-energy surges without failure; validated per IEC 61000-4-5 Level 4 requirements. |
| IFSM (Surge Current) | 200 A (8.3 ms half-sine) - Withstands inrush and fault currents in DC power rails and motor control circuits. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and enclosed industrial enclosures without derating penalties. |
| Package | SMC (DO-214AB) - Surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102; cathode indicated by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to system ground or lower-potential node; defines unidirectional conduction path during clamping. |
| Cathode | Clamping output / Surge sink | Connected to protected line (e.g., 12 V rail); conducts transient energy to ground when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; supports use in engine control, ADAS, and body electronics. |
| 1500 W peak pulse power | Handles high-energy transients per ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 without degradation; eliminates need for cascaded protection stages. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage overshoot during surge events; protects 75 V-rated components with tight safety margins. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles; no moisture sensitivity handling required prior to assembly. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal/humidity stress; critical for 15+ year industrial deployments. |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply inputs in engine control units against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and chassis ground to shunt transients exceeding 64.1 V. Use Value: Limits rail voltage to ≤104 V during 1500 W pulses, preventing latch-up or gate oxide damage in MCU power management ICs. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers from field-induced surges in factory automation. IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V sensor interface lines, upstream of optocouplers and level shifters. Use Value: Clamps induced lightning surges within <1 ns, preserving signal integrity and avoiding false triggering of digital inputs. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
Use Scenario: Securing -48 V DC backup power feeds in base station power distribution units against AC coupling and lightning ingress. IC Role / Device Role / Timing Role: Bidirectional-capable design variant not applicable; this unidirectional part used with polarity-aware layout for negative-rail protection. Use Value: Maintains ≤1 µA leakage at -48 V, ensuring minimal standby power loss while delivering 1500 W surge immunity. |
Use Scenario: Shielding high-side N-channel MOSFET gate drivers in BLDC inverters from shoot-through-inducing voltage spikes. IC Role / Device Role / Timing Role: Local clamp across gate-source terminals (with series resistor) to suppress dv/dt-induced turn-on. Use Value: Fast response and low VC limit gate overvoltage to safe levels (<104 V), preventing unintended conduction and device destruction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/52 | Lower peak power (600 W), SMB package (smaller footprint, higher RθJA = 110 °C/W), same VWM/VBR range. | Suitable for space-constrained consumer or low-power industrial designs where 1500 W margin is unnecessary. | Select when board area is critical and surge threat level is ≤Level 3 (IEC 61000-4-5). |
| 1.5KE75A-T | Through-hole DO-201 package, identical electrical specs but incompatible mounting; higher mechanical robustness, no reflow compatibility. | Preferred in legacy industrial equipment requiring serviceability or high-vibration resilience. | Choose only when through-hole assembly is mandated or thermal mass from lead-frame improves sustained surge handling. |
Compared with SMBJ75A-E3/52 and 1.5KE75A-T, the 1.5SMC75AHE3/57T uniquely combines AEC-Q101 qualification, SMC surface-mount scalability, and full 1500 W capability - making it the optimal choice for new automotive and high-reliability industrial designs requiring drop-in manufacturability and certified robustness.
Availability
1.5SMC75AHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power distribution systems requiring stable component supply, long-lifecycle assurance, and AEC-Q101-compliant surge protection.
Supply support for 1.5SMC75AHE3/57T 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, power efficiency, and application-specific validation.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of the 1.5SMC75AHE3/57T at its rated peak pulse current?
The 1.5SMC75AHE3/57T clamps to a maximum of 104 V at its specified peak pulse current of 14.6 A (10/1000 µs waveform). This value is measured under standardized test conditions with 0.31" × 0.31" copper pads and represents the upper voltage limit imposed on protected circuitry during surge events - a critical parameter for ensuring downstream component survival.
Is the 1.5SMC75AHE3/57T qualified for automotive applications?
Yes, the 1.5SMC75AHE3/57T carries AEC-Q101 qualification, confirmed by Vishay's documentation for HE3 suffix variants. This certification covers stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD robustness - validating its suitability for under-hood and chassis-mounted automotive systems such as engine control modules and body control units.
What does the "HE3" suffix indicate in 1.5SMC75AHE3/57T?
The "HE3" suffix in 1.5SMC75AHE3/57T denotes RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade E3 (RoHS only) and HM3 (halogen-free + RoHS) versions - confirming both environmental compliance and automotive-grade reliability assurance for mission-critical protection functions.
Can the 1.5SMC75AHE3/57T be used in bidirectional configurations?
No, the 1.5SMC75AHE3/57T is strictly unidirectional. Bidirectional operation requires the CA suffix (e.g., 1.5SMC75CA). The HE3/57T variant has a cathode band marking and is designed to conduct only when anode-to-cathode voltage exceeds VBR - making it unsuitable for AC line or symmetrical transient protection without external circuitry.
What is the maximum operating junction temperature for the 1.5SMC75AHE3/57T?
The 1.5SMC75AHE3/57T has a maximum junction temperature (TJ) of +150 °C, as specified in Vishay's 1.5SMC Series datasheet. This rating enables reliable operation in high-ambient environments such as automotive engine compartments or sealed industrial enclosures - provided PCB thermal design meets the recommended 8.0 mm × 8.0 mm copper pad layout per terminal.
1.5SMC75AHE3/57T 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:
- Discontinued at Digi-Key
- 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)
1.5SMC75AHE3/57T FAQ
1.How can I place an order for 1.5SMC75AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75AHE3/57T 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 1.5SMC75AHE3/57T reliable?
The price and inventory of 1.5SMC75AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75AHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC75AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75AHE3/57T?
1.5SMC75AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75AHE3/57T 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 1.5SMC75AHE3/57T?
For technical support, including 1.5SMC75AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75AHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC75AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75AHE3/57T 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 1.5SMC75AHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC75AHE3/57T?
All 1.5SMC75AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75AHE3/57T, 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 1.5SMC75AHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC75AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75AHE3/57T Tags
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