My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ75AHE3_A/I
- Part No.:
- SMCJ75AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ75AHE3_A/I.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,987
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ75AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 75 V standoff voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 12.4 A peak pulse current (IPPM) under 10/1000 µs waveform, and clamps to ≤121 V at rated surge, with AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCJ75AHE3_A/I datasheet, SMCJ75AHE3_A/I pinout, SMCJ75AHE3_A/I application, or SMCJ75AHE3_A/I equivalent, key selection criteria include its 1500 W peak pulse power rating, low 0.106 %/°C VBR temperature coefficient, unidirectional polarity with cathode band marking, and compliance with UL 497B and JESD201 Class 2 whisker resistance - critical for automotive ECU, industrial sensor interface, and high-reliability DC supply protection designs.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below 75 V reverse standoff voltage and rapidly transitions to low-impedance conduction above its 83.3–92.1 V breakdown threshold, limiting transient energy to protected circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable clamping performance across temperature.
The SMCJ75AHE3_A/I leverages the SMC (DO-214AB) package's thermal design - with RθJA = 75 °C/W and RθJL = 15 °C/W - enabling effective dissipation of 1500 W surge pulses when mounted on 8.0 mm × 8.0 mm copper pads. Its 10/1000 µs surge response time is sub-nanosecond, and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V–48 V systems. |
| VBR min/max | 83.3 V / 92.1 V at IT = 1 mA - Tight breakdown window ensures predictable turn-on and avoids premature conduction during normal operation. |
| VC @ IPPM | ≤121 V at 12.4 A - Clamping voltage limits downstream component stress during 10/1000 µs transients (e.g., ISO 7637-2 Pulse 1/2a). |
| PPPM | 1500 W - Peak surge power handling capacity; supports high-energy transients common in automotive load-dump and inductive switching events. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), with cathode indicated by a band on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., +12 V rail); conducts surge current to ground during overvoltage events. |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop with minimal inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Enables tight VC control (≤121 V) despite 12.4 A surge, minimizing voltage overshoot on sensitive ICs like microcontrollers or CAN transceivers. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure - critical for 15-year automotive service life. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
| UL 497B recognized (QVGQ2) | Validates suitability for telecom and industrial surge protection circuits requiring third-party safety certification. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power input and ground, absorbing >1500 W surges within nanoseconds. Use Value: Prevents latch-up or permanent damage to MCU, LIN transceivers, and power management ICs by limiting transient voltage to ≤121 V. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) installed at connector entry point to shunt fast transients before reaching op-amp or ADC inputs. Use Value: Maintains signal integrity and measurement accuracy by suppressing ±8 kV contact ESD (IEC 61000-4-2) without loading the mV-level sensor output. |
| Telecom DC Power Input Protection | Motor Drive Control Signal Protection |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) against lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converter, coordinated with MOVs or GDTs in hybrid protection schemes. Use Value: Withstands repeated 10/1000 µs surges up to 1500 W while maintaining <1.0 µA leakage at 75 V - preserving standby power budget. | Use Scenario: Protecting isolated gate drivers (e.g., SiC MOSFET drivers) from shoot-through-inducing transients during high-dV/dt switching. IC Role / Device Role / Timing Role: Fast-response TVS on logic-level enable/disable lines to suppress coupling from power stage ringing. Use Value: Sub-ns response prevents false triggering of gate drivers, ensuring reliable PWM timing and preventing destructive cross-conduction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ75AHE3_A/I | Lower PPPM (400 W), smaller SMA package, higher RθJA (110 °C/W), same VWM/VBR range. | Suitable for lower-energy transients (e.g., board-level ESD) but not automotive load dump. | Select when space-constrained and surge energy is ≤400 W; verify thermal margin with PCB copper area. |
| SMCJ75CAHE3_A/I | Bidirectional variant; identical VWM/VBR specs but symmetric clamping in both polarities. | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN bus) where polarity reversal occurs. | Choose only if bidirectional protection is needed; unidirectional SMCJ75AHE3_A/I offers better leakage and lower cost for DC rails. |
Compared with SMAJ75AHE3_A/I and SMCJ75CAHE3_A/I, the SMCJ75AHE3_A/I delivers optimal balance of 1500 W surge capability, AEC-Q101 qualification, and thermal performance in the industry-standard SMC footprint - making it the preferred choice for automotive and industrial DC power line protection where single-polarity clamping suffices.
Availability
SMCJ75AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power input stages requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ75AHE3_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 part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications demanding AEC-Q101 or UL recognition.
FAQ
What is the maximum clamping voltage of the SMCJ75AHE3_A/I under a 10/1000 µs surge?
The SMCJ75AHE3_A/I has a maximum clamping voltage (VC) of 121 V when subjected to its rated peak pulse current of 12.4 A under the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per the datasheet test condition. The clamping performance directly protects downstream components such as microcontrollers or power ICs connected to the same rail as the SMCJ75AHE3_A/I.
Is the SMCJ75AHE3_A/I suitable for automotive applications?
Yes, the SMCJ75AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via its HE3 suffix. It meets rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD, and is rated for operation from –55 °C to +150 °C. Its 1500 W surge rating and 121 V clamping make it appropriate for protecting engine control modules, body control units, and ADAS sensors against load dump and inductive switching transients - all validated per SMCJ75AHE3_A/I specifications.
How does the SMCJ75AHE3_A/I differ from the bidirectional SMCJ75CAHE3_A/I?
The SMCJ75AHE3_A/I is unidirectional with a cathode band marking and conducts only in reverse bias, while the SMCJ75CAHE3_A/I is bidirectional and symmetrical - clamping equally for both polarities. Their VWM (75 V), VBR (83.3–92.1 V), and PPPM (1500 W) are identical, but the unidirectional version exhibits lower reverse leakage (<1.0 µA at VWM) and is optimized for DC power rail protection. The SMCJ75AHE3_A/I is not interchangeable with SMCJ75CAHE3_A/I unless circuit polarity is strictly controlled.
What is the thermal resistance of the SMCJ75AHE3_A/I, and how does it affect layout?
The SMCJ75AHE3_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 when mounted per the recommended pad layout (0.31″ × 0.31″ copper pads). To maintain reliability under repeated surges, PCB layout must provide adequate copper area and thermal vias to minimize junction temperature rise. The SMCJ75AHE3_A/I's thermal performance enables sustained operation in high-ambient environments only when these layout guidelines are followed.
Does the SMCJ75AHE3_A/I meet UL safety standards?
Yes, the SMCJ75AHE3_A/I carries Underwriters Laboratories recognition under UL 497B (QVGQ2) for protector classification, with file number E136766. This certification confirms its suitability for use in telecom, industrial, and automotive surge protection circuits where third-party safety validation is required. The UL listing applies specifically to the SMCJ75AHE3_A/I device configuration and is documented in Vishay's official compliance records - not inferred from family-level data.
SMCJ75AHE3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 12.4A
- 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)
SMCJ75AHE3_A/I FAQ
1.How can I place an order for SMCJ75AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ75AHE3_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 SMCJ75AHE3_A/I reliable?
The price and inventory of SMCJ75AHE3_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 SMCJ75AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ75AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ75AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ75AHE3_A/I?
SMCJ75AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ75AHE3_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 SMCJ75AHE3_A/I?
For technical support, including SMCJ75AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ75AHE3_A/I requirements.
6.How does Aetrix verify that SMCJ75AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ75AHE3_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 SMCJ75AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ75AHE3_A/I?
All SMCJ75AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ75AHE3_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 SMCJ75AHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ75AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ75AHE3_A/I 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 …
