My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ75AHM3_A/I
- Part No.:
- SMCJ75AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ75AHM3_A/I.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,721
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ75AHM3_A/I from Vishay General Semiconductor is a unidirectional 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 stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 12.4 A peak pulse current (IPPM), 121 V clamping voltage (VC) at IPPM, and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMCJ75AHM3_A/I datasheet, SMCJ75AHM3_A/I pinout, SMCJ75AHM3_A/I application, or SMCJ75AHM3_A/I equivalent, key selection criteria include clamping performance under surge conditions, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to limit transient overvoltages before they damage downstream ICs or MOSFETs. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps), while the SMC package supports high surge energy absorption without thermal runaway.
The device is rated for -55 °C to +150 °C operating junction temperature, with derating above 25 °C per Figure 2. It meets JESD201 Class 2 whisker resistance, UL 497B recognition (QVGQ2), and MSL Level 1 per J-STD-020 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - maximum continuous reverse working voltage before clamping initiates |
| VBR min/max | 83.3 V / 92.1 V at IT = 1 mA - guaranteed avalanche onset range for reliable triggering |
| VC @ IPPM | 121 V - clamped voltage during 12.4 A 10/1000 μs surge, limiting stress on protected circuitry |
| PPPM | 1500 W - peak transient power handling capability under standardized surge waveform |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for PCB pad layout design |
| TJ max | +150 °C - maximum allowable junction temperature, enabling use in under-hood automotive environments |
| ID @ VWM | ≤1.0 μA - low leakage ensures minimal standby power loss in always-on systems |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; defines current flow direction during clamping |
| Cathode | High-side connection point | Banded end; connects to protected line (e.g., 75 V rail); conducts avalanche current to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Halogen-free & RoHS | HM3 suffix confirms compliance with environmental regulations and material restrictions |
| Low incremental surge resistance | Enables tight clamping (VC/VBR ratio ≈ 1.31) for superior protection margin |
| MSL Level 1 | Allows unlimited floor life and single-reflow processing at 260 °C peak without moisture sensitivity risk |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal and humidity stress |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients before reaching PMIC or MCU. Use Value: With 121 V clamping at 12.4 A, SMCJ75AHM3_A/I limits voltage seen by downstream regulators to safe levels during 100 V/500 ms load dump events. | Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loop) from ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: TVS mounted across signal and return lines to absorb fast-rising transients induced by relay coil de-energization. Use Value: Sub-1 ns response and ≤1.0 μA leakage preserve signal integrity and minimize offset error in precision current-sense circuits. |
| Telecom DC Power Feeds | OBD-II Diagnostic Interface Protection |
Use Scenario: Safeguarding PoE-powered equipment front-end rectifiers and DC-DC converters from lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V input bus, coordinated with upstream fuses and secondary-stage TVS arrays. Use Value: 1500 W PPPM rating enables survival of multiple 10/1000 μs surges per IEC 61000-4-5 Level 4 without degradation. | Use Scenario: Hardening vehicle diagnostic port pins (e.g., CAN_H, CAN_L, K-line) against accidental 12 V battery contact and ESD. IC Role / Device Role / Timing Role: Discrete unidirectional TVS on each data line referenced to chassis ground, meeting ISO 10605 requirements. Use Value: AEC-Q101 qualification and 1500 W surge rating ensure compliance with OEM OBD-II interface durability specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ75A-E3/57T | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Not suitable for 1500 W surge environments; limited to lower-energy transients | Select only when space-constrained and surge energy is <400 W |
| SMCJ75AHE3_A/I | Same electrical specs, but RoHS-compliant commercial grade (not halogen-free or AEC-Q101 qualified) | Lacks automotive qualification and halogen-free certification required for Tier 1 supply chains | Use where AEC-Q101 and halogen-free status are not mandated |
Compared with SMCJ75AHM3_A/I, SMAJ75A-E3/57T offers reduced surge capacity and thermal performance in a smaller package, while SMCJ75AHE3_A/I matches electrical behavior but omits halogen-free construction and automotive qualification - making SMCJ75AHM3_A/I the sole choice for AEC-Q101-compliant, environmentally restricted designs requiring full 1500 W protection.
Availability
SMCJ75AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power feeds requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMCJ75AHM3_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 targets high-energy transient suppression in harsh environments; SMCJ75AHM3_A/I specifically serves automotive and industrial applications demanding AEC-Q101 validation, halogen-free materials, and 1500 W surge immunity.
FAQ
What is the clamping voltage of SMCJ75AHM3_A/I at its rated peak pulse current?
The SMCJ75AHM3_A/I has a maximum clamping voltage (VC) of 121 V when subjected to its rated 12.4 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable voltage limiting during surge events, ensuring downstream components remain within safe operating voltage margins.
Is SMCJ75AHM3_A/I qualified for automotive applications?
Yes, SMCJ75AHM3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88394. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, making SMCJ75AHM3_A/I suitable for under-hood and body-control module applications in passenger and commercial vehicles.
What does the "HM3" suffix indicate in SMCJ75AHM3_A/I?
The "HM3" suffix in SMCJ75AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., "E3" or "M3") and confirms compliance with automotive material standards and environmental regulations - critical for Tier 1 supplier BOM acceptance.
Can SMCJ75AHM3_A/I be used in bidirectional configurations?
No, SMCJ75AHM3_A/I is a unidirectional TVS diode, identified by its cathode band marking and specified electrical parameters (e.g., forward voltage VF = 3.5 V at 100 A). For bidirectional operation, Vishay specifies part numbers ending in "CA", such as SMCJ75CA; using SMCJ75AHM3_A/I in reverse-biased AC applications would result in unintended conduction and failure.
What PCB pad layout is recommended for optimal thermal performance of SMCJ75AHM3_A/I?
Vishay specifies mounting SMCJ75AHM3_A/I on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W pulse power and maintain RθJA = 75 °C/W. Reducing pad area increases thermal resistance and reduces surge capability; thermal vias under pads further improve heat dissipation in high-reliability automotive layouts.
SMCJ75AHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ75AHM3_A/I FAQ
1.How can I place an order for SMCJ75AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ75AHM3_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 SMCJ75AHM3_A/I reliable?
The price and inventory of SMCJ75AHM3_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 SMCJ75AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ75AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ75AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ75AHM3_A/I?
SMCJ75AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ75AHM3_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 SMCJ75AHM3_A/I?
For technical support, including SMCJ75AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ75AHM3_A/I requirements.
6.How does Aetrix verify that SMCJ75AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ75AHM3_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 SMCJ75AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ75AHM3_A/I?
All SMCJ75AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ75AHM3_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 SMCJ75AHM3_A/I part is unused and in its original packaging.
Return procedure for SMCJ75AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ75AHM3_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 …
