My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ75CAHE3/57T
- Part No.:
- SMCJ75CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ75CAHE3/57T.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,167
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ75CAHE3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power rating, 75 V standoff voltage (VWM), and clamping voltage of 121 V at 12.4 A peak pulse current. It protects sensitive ICs and MOSFETs against inductive switching transients and lightning-induced surges in automotive and industrial power rails.
For engineers reviewing the SMCJ75CAHE3/57T datasheet, SMCJ75CAHE3/57T pinout, SMCJ75CAHE3/57T application, or SMCJ75CAHE3/57T equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W PPPM rating, 121 V VC at IPPM, and RoHS-compliant HE3 automotive-grade construction.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 75 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown range (83.3–92.1 V at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and fast response (<1 ns).
Thermal design relies on its RθJA of 75 °C/W and RθJL of 15 °C/W; derating begins above 25 °C ambient, with full power rated only at TA ≤ 25 °C and reduced to zero at TJ = 150 °C. The SMC (DO-214AB) package supports automated placement and meets UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 83.3 V / 92.1 V at 1 mA - guaranteed avalanche breakdown window defining turn-on threshold |
| VC @ IPPM | 121 V at 12.4 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream circuitry |
| PPPM | 1500 W - peak pulse power handling capacity per 10/1000 μs waveform, critical for IEC 61000-4-5 compliance |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
| Qualification | AEC-Q101 qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
SMCJ75CAHE3/57T uses the SMC (DO-214AB) package: a surface-mount, bidirectional device with no polarity marking; both terminals are symmetrical and interchangeable. Thermal performance requires minimum 8.0 mm × 8.0 mm copper pads per terminal per Vishay specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as transient current entry/exit point; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or floating DC buses without polarity concerns |
| AEC-Q101 qualification | Validated for automotive under-hood use with extended temperature cycling and humidity robustness |
| 1500 W peak pulse power | Supports Level 4 IEC 61000-4-5 surge immunity (4 kV line-to-line, 2 kV line-to-earth) |
| Glass-passivated junction | Ensures stable breakdown voltage over lifetime and resistance to moisture-induced parameter drift |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V battery-supplied ECUs exposed to load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Shunt TVS diode placed across power input to clamp surges before they reach LDOs or microcontrollers. Use Value: Limits transient voltage to ≤121 V, preventing damage to 3.3 V/5 V logic supplies and meeting ISO 7637-2 Pulse 5a requirements. |
Use Scenario: Analog sensor outputs (e.g., pressure, temperature) routed through long harnesses in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed differential-mode across signal pair to suppress EFT and surge coupling. Use Value: Maintains signal integrity by clamping ±121 V transients while adding <1 pF junction capacitance at 0 V bias. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
|
Use Scenario: DC-fed telecom line cards receiving power over long cables susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V input rail, upstream of DC/DC converters and hot-swap controllers. Use Value: Absorbs 1500 W surges without degradation, enabling compliance with GR-1089-CORE Zone 3 requirements. |
Use Scenario: Secondary-side 12 V output of wall adapters powering USB peripherals and smart home devices. IC Role / Device Role / Timing Role: Final-stage TVS protecting downstream USB-PD controllers and level shifters from secondary-side transients. Use Value: Provides fail-safe clamping at 121 V with <1 μA leakage at 75 V, minimizing standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CAHE3/52T | Lower PPPM (600 W), same VWM (75 V), SMB package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer designs with lower surge threat levels | Select when board area is limited and IEC 61000-4-5 Level 3 (2 kV) suffices |
| SMCJ75AHE3/57T | Unidirectional variant; identical VWM, PPPM, and package but requires polarity-aware layout | Required where DC rail polarity is fixed and forward conduction must be blocked | Choose only if system architecture mandates unidirectional blocking (e.g., battery-input circuits) |
Compared with SMCJ75CAHE3/57T, SMBJ75CAHE3/52T trades surge margin for compactness, while SMCJ75AHE3/57T adds polarity constraint without improving clamping or thermal performance-making the bidirectional SMCJ75CAHE3/57T optimal for general-purpose, polarity-agnostic protection.
Availability
SMCJ75CAHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom line cards, and consumer power adapter designs requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCJ75CAHE3/57T 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 reliability, efficiency, and automotive-grade validation.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive power distribution, industrial control inputs, and telecom infrastructure surge resilience.
FAQ
What is the clamping voltage of SMCJ75CAHE3/57T at its rated peak pulse current?
The SMCJ75CAHE3/57T has a maximum clamping voltage (VC) of 121 V when subjected to its specified peak pulse current (IPPM) of 12.4 A under the standard 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 SMCJ75CAHE3/57T maintains this clamping performance across its qualified temperature range.
Is SMCJ75CAHE3/57T suitable for automotive applications?
Yes, SMCJ75CAHE3/57T is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It undergoes rigorous testing for temperature cycling, highly accelerated life testing (HALT), and surge robustness per automotive standards. Its 150 °C maximum junction temperature and bidirectional clamping make it appropriate for engine control units, body control modules, and ADAS power rails where polarity-agnostic protection is needed.
How does the bidirectional configuration of SMCJ75CAHE3/57T affect PCB layout?
The bidirectional configuration of SMCJ75CAHE3/57T eliminates polarity marking requirements-no cathode band is present, and either terminal may connect to either side of the protected line. This simplifies layout for AC-coupled signals or floating DC buses and avoids orientation errors during automated assembly. Layout must still follow Vishay's recommended 8.0 mm × 8.0 mm copper pad dimensions per terminal to ensure thermal and surge performance.
What is the standoff voltage (VWM) and why is it critical for SMCJ75CAHE3/57T selection?
The standoff voltage (VWM) of SMCJ75CAHE3/57T is 75 V-the maximum continuous reverse voltage it can withstand without significant leakage current (<1 μA). Selecting a VWM ≥10–15% above the system's maximum steady-state voltage prevents false triggering during normal operation. For a 60 V nominal automotive rail, SMCJ75CAHE3/57T provides appropriate margin while maintaining effective clamping at 121 V during transients.
Does SMCJ75CAHE3/57T meet industry surge immunity standards?
Yes, SMCJ75CAHE3/57T supports compliance with IEC 61000-4-5 (surge immunity) up to Level 4 (4 kV line-to-line, 2 kV line-to-earth) due to its 1500 W peak pulse power rating and 121 V clamping voltage. When implemented with proper PCB layout-including short traces, adequate ground plane, and recommended copper pads-it enables end-equipment certification for industrial, automotive, and telecom applications requiring robust transient protection.
SMCJ75CAHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ75CAHE3/57T FAQ
1.How can I place an order for SMCJ75CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ75CAHE3/57T 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 SMCJ75CAHE3/57T reliable?
The price and inventory of SMCJ75CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ75CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ75CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ75CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ75CAHE3/57T?
SMCJ75CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ75CAHE3/57T 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 SMCJ75CAHE3/57T?
For technical support, including SMCJ75CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ75CAHE3/57T requirements.
6.How does Aetrix verify that SMCJ75CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ75CAHE3/57T 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 SMCJ75CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ75CAHE3/57T?
All SMCJ75CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ75CAHE3/57T, 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 SMCJ75CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ75CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ75CAHE3/57T 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 …
