My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC75AHE3/9AT
- Part No.:
- 1.5SMC75AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75AHE3/9AT.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,170
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC75AHE3/9AT 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), and 104 V clamping voltage (VC) at 14.6 A peak pulse current (IPPM). It delivers 1500 W peak pulse power (10/1000 μs waveform) and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the 1.5SMC75AHE3/9AT datasheet, 1.5SMC75AHE3/9AT pinout, 1.5SMC75AHE3/9AT application, or 1.5SMC75AHE3/9AT equivalent, this device is selected for robust overvoltage clamping in DC power rails, sensor interfaces, and automotive control modules where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.38), and MSL Level 1 reliability are required.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal bias it presents <1 μA leakage at 64.1 V, but triggers avalanche conduction when transient voltage exceeds its 71.3–78.8 V breakdown range. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low temperature coefficient (0.105 %/°C).
Thermally, it features RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to TJ = 150 °C. The SMC package supports automated placement and meets UL 94 V-0 flammability rating, with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64.1 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 71.3–78.8 V at IT = 1 mA - Tight 5% tolerance ensures predictable turn-on threshold across production lots. |
| VC (Clamping Voltage) | 104 V at IPPM = 14.6 A - Limits transient voltage seen by downstream ICs during 1500 W surge events. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 μs) - Sustains high-energy lightning or inductive-switching transients without failure. |
| ID (Reverse Leakage) | 1.0 μA max at VWM - Minimizes standby power loss and avoids false triggering in low-power sensor circuits. |
| TJ max | 150 °C - Enables use in under-hood automotive environments and industrial enclosures with elevated ambient temps. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with cathode band marking. Dimensions: 7.75 × 6.22 × 2.62 mm (L × W × H); 0.305" × 0.246" × 0.103". Mounting requires 8.0 mm × 8.0 mm copper pads per terminal per JEDEC standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side return path | Enables unidirectional clamping from cathode to anode during positive transients on cathode side. |
| Cathode | Marked end (band); connected to line/voltage rail requiring protection | Defines polarity-sensitive placement: cathode faces protected I/O or power input to clamp positive surges. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Handles high-energy transients from load dump or ISO 7637-2 Pulse 5a without degradation. |
| Fast response time (<1 ns) | Clamps before sensitive logic or analog front-ends experience overvoltage stress. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture-induced popcorning. |
| AEC-Q101 qualification (HE3 suffix) | Validates suitability for automotive ECUs, ADAS sensors, and body control modules. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load-dump transients (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VCC and GND, triggered within nanoseconds to clamp spikes to ≤104 V. Use Value: Prevents MCU brown-out or latch-up during 35 V/100 ms load dump events while maintaining <1 μA quiescent leakage. |
Use Scenario: Safeguarding 4–20 mA current-loop sensor outputs from ESD and field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Cathode-connected to signal line, anode to local ground; clamps ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity below 104 V clamping level, preserving 16-bit DAC resolution and avoiding ADC saturation. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
Use Scenario: Shielding PoE-powered network switches from induced surges on 48 V DC input lines due to nearby lightning strikes. IC Role / Device Role / Timing Role: Primary TVS on input rail upstream of DC-DC converter; handles repetitive 10/1000 μs surges at 0.01% duty cycle. Use Value: Withstands 1500 W pulses without derating, enabling compact design vs. multi-stage protection schemes. |
Use Scenario: Adding secondary-level surge immunity to USB-C VBUS lines in portable monitors exposed to accidental hot-plug transients. IC Role / Device Role / Timing Role: Unidirectional clamp from VBUS to GND; activated only during overvoltage, not during normal 5 V operation. Use Value: 64.1 V VWM avoids interference with USB PD negotiation while clamping >75 V faults to safe levels. |
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-E3/52T | Same VWM (64.1 V) and VC (104 V), but lower PPPM (600 W) and SMB package (smaller footprint, higher RθJA = 85 °C/W) | Limited to lower-energy transients; unsuitable for automotive load dump or telecom lightning standards | Select when board space is constrained and surge energy is ≤600 W; verify thermal margin at 150 °C ambient. |
| 1.5KE75A-T | Through-hole DO-201 package, identical electrical specs (VWM/VC/IPPM), but no AEC-Q101 qualification and MSL Level 3 handling | Not suitable for automated SMT lines or automotive under-hood use; requires wave soldering | Choose for legacy through-hole designs or prototyping where reflow compatibility and automotive qualification are not required. |
Compared with 1.5SMC75AHE3/9AT, SMBJ75A-E3/52T trades surge capacity for size, while 1.5KE75A-T sacrifices SMT process compatibility and automotive qualification for identical clamping performance in through-hole form.
Availability
1.5SMC75AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and telecom DC power input protection requiring stable component supply, AEC-Q101 compliance, and high-reliability surge immunity.
Supply support for 1.5SMC75AHE3/9AT 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 1.5SMC Series is engineered for high-power transient suppression in harsh environments-designed to meet automotive, industrial, and telecom surge immunity standards with consistent clamping performance and robust thermal behavior.
FAQ
What is the clamping voltage of the 1.5SMC75AHE3/9AT at its rated peak pulse current?
The 1.5SMC75AHE3/9AT has a maximum clamping voltage (VC) of 104 V at 14.6 A peak pulse current (IPPM), measured using the standard 10/1000 μs double-exponential waveform. This value ensures downstream components see limited overvoltage during surge events, and is guaranteed across the full operating temperature range per Vishay's 88303 specification document.
Is the 1.5SMC75AHE3/9AT suitable for automotive applications?
Yes, the 1.5SMC75AHE3/9AT is AEC-Q101 qualified (denoted by the HE3 suffix) and tested for automotive-grade reliability, including temperature cycling, high-temperature reverse bias, and ESD. It is explicitly recommended for engine control units, body electronics, and ADAS sensor modules where compliance with ISO 7637-2 and ISO 16750-2 is required.
What does the "HE3" and "9AT" suffix mean in 1.5SMC75AHE3/9AT?
The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification; "9AT" specifies packaging in a 13-inch diameter plastic tape-and-reel format containing 3500 units. This configuration supports high-volume SMT assembly and traceable lot control for automotive and industrial production programs.
How does the 1.5SMC75AHE3/9AT compare to bidirectional TVS diodes like 1.5SMC75CA?
The 1.5SMC75AHE3/9AT is unidirectional and intended for DC line protection where polarity is fixed (e.g., VCC-to-GND), offering lower leakage and tighter VBR tolerance. In contrast, 1.5SMC75CA is bidirectional and suited for AC or floating signal lines (e.g., RS-485), but exhibits higher ID at VWM and broader VBR spread. Selection depends on circuit topology-not interchangeability.
What is the thermal resistance and maximum junction temperature for the 1.5SMC75AHE3/9AT?
The 1.5SMC75AHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. Its maximum operating junction temperature is 150 °C, enabling reliable operation in under-hood automotive and industrial environments with proper PCB thermal design.
1.5SMC75AHE3/9AT 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)
1.5SMC75AHE3/9AT FAQ
1.How can I place an order for 1.5SMC75AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75AHE3/9AT 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 1.5SMC75AHE3/9AT reliable?
The price and inventory of 1.5SMC75AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC75AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75AHE3/9AT?
1.5SMC75AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75AHE3/9AT 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 1.5SMC75AHE3/9AT?
For technical support, including 1.5SMC75AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75AHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC75AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75AHE3/9AT 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 1.5SMC75AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC75AHE3/9AT?
All 1.5SMC75AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75AHE3/9AT, 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 1.5SMC75AHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC75AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75AHE3/9AT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
