My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ75A-M3/57T
- Part No.:
- SMCJ75A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ75A-M3/57T.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,881
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ75A-M3/57T 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 stand-off voltage, 83.3–92.1 V breakdown voltage at 1 mA, and 12.4 A peak pulse current (10/1000 µs). It clamps transients to ≤121 V at rated surge and operates from –55 °C to +150 °C, commonly used to protect power rails and I/O lines in industrial motor drives.
For engineers reviewing the SMCJ75A-M3/57T datasheet, SMCJ75A-M3/57T pinout, SMCJ75A-M3/57T application, or SMCJ75A-M3/57T equivalent, key selection criteria include its 1500 W peak pulse power rating, low 0.057 %/°C VBR temperature coefficient, halogen-free RoHS-compliant construction (M3 suffix), and AEC-Q101 qualification eligibility via HM3 variant.
Technical Context
The SMCJ75A-M3/57T employs a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and lightning-induced transients. Its unidirectional polarity features a cathode band marking and exhibits 1.0 µA max reverse leakage at 75 V, enabling low-power standby integrity in protected circuits.
Thermally, it delivers RθJA = 75 °C/W (typ.) on standard 8.0 mm × 8.0 mm copper pads and supports 200 A non-repetitive forward surge (8.3 ms half-sine), making it suitable for DC bus and automotive load-dump scenarios where thermal derating above 25 °C must be applied per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin. |
| VBR min/max | 83.3 V / 92.1 V at 1.0 mA - Confirmed breakdown range ensures reliable turn-on without premature conduction. |
| VC @ IPPM | ≤121 V at 12.4 A - Clamping voltage under 1500 W 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 1500 W - Peak pulse power handling capacity; validates suitability for IEC 61000-4-5 Level 4 surges. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 8.13 mm footprint and 3.20 mm height; compatible with automated pick-and-place. |
| RoHS Status | Halogen-free, RoHS-compliant (M3 suffix) - Meets environmental compliance requirements without brominated flame retardants. |
Pinout & Package
SMCJ75A-M3/57T uses the SMC (DO-214AB) package: a rectangular surface-mount case with two coplanar matte tin-plated leads, cathode identified by a visible band. Leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; conducts during positive surge events when cathode is at higher potential. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to higher-potential rail (e.g., VCC); blocks normal operation but avalanches during overvoltage to shunt current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables compact PCB layout in space-constrained power modules and automotive ECUs without sacrificing surge rating. |
| 1500 W peak pulse power | Provides robust immunity against IEC 61000-4-5 combination wave surges up to 4 kV (open-circuit) / 2 kA (short-circuit). |
| 0.057 %/°C VBR tempco | Ensures stable clamping threshold across –55 °C to +150 °C, critical for engine control units and outdoor telecom equipment. |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without moisture-induced popcorning; eliminates pre-bake requirement in standard SMT lines. |
| AEC-Q101 qualification path | HM3 variant available for automotive applications; confirms reliability under temperature cycling, humidity, and mechanical shock per automotive standards. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 72 V DC bus against inductive kickback from brushed DC motors and relay coils. IC Role / Device Role / Timing Role: Unidirectional TVS placed between bus rail and chassis ground to clamp transients exceeding 75 V. Use Value: Limits voltage excursion to ≤121 V during 12.4 A surges, preventing damage to gate drivers and MCU power supplies. | Use Scenario: Guarding LIN bus transceivers and sensor inputs against battery dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBAT-fed supply lines to absorb 12 V system load-dump energy. Use Value: Withstands 200 A 8.3 ms half-sine surge per ISO 7637-2 Pulse 5a, maintaining signal integrity during vehicle cranking. |
| Telecom Power Supplies | Renewable Energy Inverters |
Use Scenario: Input-stage protection for 48 V PoE-powered equipment exposed to lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary TVS on DC input rail upstream of DC/DC converters to divert induced common-mode energy. Use Value: 1500 W rating meets IEC 61000-4-5 Level 4 (4 kV/2 kA), reducing need for cascaded protection stages. | Use Scenario: DC-link surge suppression in solar string inverters subjected to grid-switching transients and nearby lightning strikes. IC Role / Device Role / Timing Role: Parallel-connected TVS on 600–1000 V DC bus to clamp switching spikes and external surges. Use Value: Low incremental surge resistance minimizes clamping overshoot, preserving IGBT gate oxide integrity during fault events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-M3/57T | Lower 600 W PPPM, same VWM/VBR, SMB (DO-214AA) package (smaller footprint, higher RθJA) | Preferred for space-limited consumer electronics where 1500 W rating is excessive | Select when board area is constrained and surge threat level is ≤Level 3 (IEC 61000-4-5) |
| SMCJ75CA-M3/57T | Bidirectional version; identical VWM/VBR/PPPM, no polarity marking, symmetric clamping in both directions | Required for AC-coupled signal lines or full-bridge rectifier outputs where reverse polarity surges occur | Choose for bidirectional protection needs-no cathode/anode orientation required during placement |
Compared with SMBJ75A-M3/57T, the SMCJ75A-M3/57T delivers 2.5× higher surge power in the same mounting style but requires more PCB real estate; versus SMCJ75CA-M3/57T, it offers lower cost and simpler layout for unidirectional DC rails but cannot suppress negative-going transients on AC paths.
Availability
SMCJ75A-M3/57T is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and renewable energy inverters requiring stable component supply with halogen-free compliance and high-energy transient immunity.
Supply support for SMCJ75A-M3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMCJ series is engineered for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where robustness against lightning, ESD, and inductive switching is mission-critical.
FAQ
What is the maximum clamping voltage of the SMCJ75A-M3/57T under a 10/1000 µs surge?
The SMCJ75A-M3/57T has a maximum clamping voltage (VC) of 121 V when subjected to its rated 12.4 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ75A-M3/57T maintains this clamping performance across its operational temperature range, ensuring consistent protection behavior in demanding applications.
Does the SMCJ75A-M3/57T have AEC-Q101 qualification?
The SMCJ75A-M3/57T itself is not AEC-Q101 qualified, but Vishay offers the functionally identical HM3-suffix variant (e.g., SMCJ75A-HM3/57T) that is fully AEC-Q101 qualified for automotive use. The M3 suffix denotes halogen-free RoHS compliance only; qualification requires explicit HM3 ordering code and associated test documentation. Engineers specifying the SMCJ75A-M3/57T for automotive should verify whether their program permits qualification-by-equivalence or requires certified HM3 parts.
How does the SMCJ75A-M3/57T differ from the SMCJ75CA-M3/57T?
The SMCJ75A-M3/57T is unidirectional with cathode-band marking and conducts only during positive surges relative to its anode, while the SMCJ75CA-M3/57T is bidirectional with no polarity marking and clamps symmetrically for both polarities. Both share identical VWM (75 V), VBR (83.3–92.1 V), and PPPM (1500 W), but the SMCJ75A-M3/57T is preferred for DC power rail protection, whereas the CA version suits AC lines or differential buses. The SMCJ75A-M3/57T offers slightly lower cost and simpler layout verification.
What is the thermal resistance junction-to-ambient for the SMCJ75A-M3/57T?
The typical thermal resistance junction-to-ambient (RθJA) for the SMCJ75A-M3/57T is 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal. This value assumes still air conditions and is critical for calculating junction temperature rise under continuous power dissipation (PD = 6.5 W at TA = 50 °C). Derating curves in Figure 2 of the datasheet must be applied for ambient temperatures above 25 °C to ensure TJ remains ≤150 °C. The SMCJ75A-M3/57T's RθJL is 15 °C/W, supporting localized heat sinking via PCB copper pours.
Can the SMCJ75A-M3/57T be used in place of a 75 V Zener diode for voltage regulation?
No-the SMCJ75A-M3/57T is not intended for steady-state voltage regulation. It is a transient voltage suppressor optimized for short-duration, high-energy surges (e.g., 10/1000 µs), with specified parameters like VC and IPPM that do not apply under DC bias. Its 75 V stand-off voltage (VWM) is a maximum non-conduction threshold-not a regulated output-and leakage rises sharply near VBR. For regulation, dedicated Zener or LDO ICs with tight tolerance and thermal stability should be used; the SMCJ75A-M3/57T serves only as a protective shunt during faults.
SMCJ75A-M3/57T 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ75A-M3/57T FAQ
1.How can I place an order for SMCJ75A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ75A-M3/57T 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 SMCJ75A-M3/57T reliable?
The price and inventory of SMCJ75A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ75A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ75A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ75A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ75A-M3/57T?
SMCJ75A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ75A-M3/57T 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 SMCJ75A-M3/57T?
For technical support, including SMCJ75A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ75A-M3/57T requirements.
6.How does Aetrix verify that SMCJ75A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ75A-M3/57T 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 SMCJ75A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ75A-M3/57T?
All SMCJ75A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ75A-M3/57T, 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 SMCJ75A-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ75A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ75A-M3/57T 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 …
