My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ75A-E3/57T
- Part No.:
- SMCJ75A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ75A-E3/57T.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,584
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ75A-E3/57T 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, 1500 W peak pulse power (10/1000 µs), 12.4 A peak pulse current (IPPM), and clamps to ≤121 V under surge. It is widely deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMCJ75A-E3/57T datasheet, SMCJ75A-E3/57T pinout, SMCJ75A-E3/57T application, or SMCJ75A-E3/57T equivalent, key selection criteria include unidirectional polarity, 1500 W surge rating, 75 V operating voltage window, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on standard PCB pads.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 75 V and rapidly transitions to low-impedance conduction above VBR = 83.3–92.1 V to divert transient energy. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM).
It delivers 1500 W peak pulse power handling per 10/1000 µs waveform when mounted on 8.0 mm × 8.0 mm copper pads, with thermal resistance RθJA = 75 °C/W and maximum junction temperature TJ = +150 °C - enabling reliable operation in automotive under-hood environments and industrial control cabinets.
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 72 V nominal systems. |
| VBR @ IT = 1 mA | 83.3–92.1 V - Verified breakdown threshold range; ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | ≤121 V - Clamped voltage during 12.4 A surge; limits downstream IC stress to safe levels in 75 V bus protection. |
| PPPM | 1500 W - Peak pulse power rating (10/1000 µs); supports ISO 7637-2 Pulse 1/2b/5a and IEC 61000-4-5 Level 4 surges. |
| IPPM | 12.4 A - Peak surge current capability at rated clamping voltage; enables protection of 12–24 V auxiliary supplies. |
| TJ max. | +150 °C - Maximum junction temperature; allows direct mounting near heat-generating components in engine control units. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with IPC-7351B. |
Pinout & Package
SMCJ75A-E3/57T uses the SMC (DO-214AB) package: a 2-terminal surface-mount case with cathode band marking on the unidirectional variant. The device has no internal circuitry beyond the PN junction; polarity is defined by the banded end (cathode), with anode at the opposite terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line (e.g., +75 V rail); conducts during positive transients to ground or lower-potential return path. |
| Anode | Reference/return terminal | Typically tied to system ground or common return; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables compliance with automotive ISO 7637-2 Pulse 5a (load dump) without external series impedance. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD or inductive switch-off). |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| MSL Level 1 (J-STD-020), 260 °C reflow compatible | Supports single-pass lead-free reflow assembly without moisture-induced popcorn failure. |
| RoHS-compliant, matte tin plated leads | Meets J-STD-002 and JESD 22-B102 solderability standards; eliminates whisker risk in high-reliability applications. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 72 V battery-fed ECUs against load dump transients up to 120 V and 100 ms duration. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and input filter capacitor. Use Value: Limits voltage seen by downstream DC-DC converters to ≤121 V, preventing overvoltage latch-up or destruction. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) from ESD and field-wiring faults. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (anode grounded) shunting transients to ground. Use Value: Maintains signal integrity with <1 µA leakage at 75 V, avoiding offset errors in precision current-sense circuits. |
| Telecom DC Power Feeds | Consumer Power Adapter Outputs |
Use Scenario: Securing -48 V telecom rectifier outputs against lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Reverse-connected unidirectional TVS (cathode to -48 V, anode to ground) clamping negative excursions. Use Value: Withstands 1500 W pulses while maintaining VC ≤121 V, preserving upstream rectifier and downstream PoE controllers. |
Use Scenario: Adding secondary-side surge immunity to 75 V output of high-voltage AC/DC adapters for LED drivers. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across output capacitor to absorb coupling transients from primary side. Use Value: Prevents overvoltage shutdown of constant-current LED modules during line disturbances without affecting steady-state regulation. |
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 | Lower PPPM = 600 W; SMB package (smaller footprint, higher RθJA = 110 °C/W) | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD), not ISO 7637-2 load dump | Select when board space is constrained and surge energy is limited to ≤600 W. |
| SMCJ75CA-E3/57T | Bidirectional variant; same VWM, VBR, PPPM, but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur | Choose for RS-485 buses, transformer-isolated interfaces, or dual-rail protection where bidirectional clamping is mandatory. |
Compared with SMCJ75A-E3/57T, SMBJ75A-E3/52T trades surge capacity for compactness, while SMCJ75CA-E3/57T adds bidirectional symmetry at identical power rating - making the original optimal for unidirectional 75 V DC rail protection demanding full 1500 W immunity.
Availability
SMCJ75A-E3/57T is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and telecom DC feed protection requiring stable component supply and AEC-Q101-aligned reliability.
Supply support for SMCJ75A-E3/57T 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 ruggedness, reliability, and automotive qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where sustained surge immunity and thermal resilience are critical.
FAQ
What is the maximum clamping voltage of the SMCJ75A-E3/57T under a 10/1000 µs surge?
The SMCJ75A-E3/57T clamps to a maximum of 121 V when subjected to its rated 12.4 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is guaranteed across temperature and production lot, ensuring predictable overvoltage limiting for downstream 75 V-rated components in the SMCJ75A-E3/57T protection circuit.
Is the SMCJ75A-E3/57T AEC-Q101 qualified?
No, the SMCJ75A-E3/57T is a commercial-grade RoHS-compliant part (suffix E3). For AEC-Q101 qualification, the equivalent part is SMCJ75AHE3_A/H or SMCJ75AHM3_A/H - which share identical electrical specs but include automotive-grade screening and traceability documentation required for automotive applications.
What does the "57T" suffix indicate in SMCJ75A-E3/57T?
The "57T" suffix denotes the preferred packaging configuration: 7-inch diameter plastic tape and reel, with 850 units per reel. This format is optimized for high-speed pick-and-place assembly and aligns with IPC-7351B land pattern recommendations for the SMC (DO-214AB) package used by the SMCJ75A-E3/57T.
Can the SMCJ75A-E3/57T be used in bidirectional signal protection?
No - the SMCJ75A-E3/57T is unidirectional and must be oriented with its cathode toward the protected line. For bidirectional protection (e.g., data lines or AC signals), the SMCJ75CA-E3/57T variant is required, as it provides symmetrical clamping in both polarities while maintaining identical VWM, PPPM, and VC ratings as the SMCJ75A-E3/57T.
What is the thermal resistance of the SMCJ75A-E3/57T in standard mounting conditions?
The SMCJ75A-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. This value assumes still air and no additional heatsinking; actual performance improves with larger copper areas or forced airflow, critical for sustained surge duty cycles in the SMCJ75A-E3/57T application.
SMCJ75A-E3/57T 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 (SMCJ)
SMCJ75A-E3/57T FAQ
1.How can I place an order for SMCJ75A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ75A-E3/57T 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-E3/57T reliable?
The price and inventory of SMCJ75A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ75A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ75A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ75A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ75A-E3/57T?
SMCJ75A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ75A-E3/57T 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-E3/57T?
For technical support, including SMCJ75A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ75A-E3/57T requirements.
6.How does Aetrix verify that SMCJ75A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ75A-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ75A-E3/57T?
All SMCJ75A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ75A-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ75A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ75A-E3/57T 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 …
