My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ24-E3/57T
- Part No.:
- SMCJ24-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ24-E3/57T.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,996
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ24-E3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 24 V standoff voltage (VWM), 26.7–29.5 V breakdown range (VBR at 1 mA), 38.9 V clamping voltage (VC) at 38.6 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMCJ24-E3/57T datasheet, SMCJ24-E3/57T pinout, SMCJ24-E3/57T application, or SMCJ24-E3/57T equivalent, key selection criteria include clamping performance under 1500 W surge, unidirectional polarity with cathode band marking, RoHS-compliant matte tin-plated leads, AEC-Q101 qualification for automotive use, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ24-E3/57T operates as a silicon avalanche diode that enters controlled breakdown when reverse voltage exceeds its VBR threshold, limiting transient energy by shunting surge current to ground. Its glass-passivated junction ensures stable leakage (<1.0 µA at 24 V) and low incremental surge resistance for consistent clamping behavior across temperature.
Designed for single-polarity DC protection, it supports fast response time (<1 ns), meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and delivers thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead) under defined pad layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 26.7 V / 29.5 V at 1 mA - Confirmed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 38.9 V at 38.6 A - Clamped voltage during full 1500 W surge, critical for downstream IC survivability |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 µs waveform, enabling high-energy transient suppression |
| IPPM | 38.6 A - Peak surge current capability directly tied to VC and PPPM ratings |
| TJ max | +150 °C - Maximum junction temperature supporting operation in under-hood automotive environments |
| Leakage ID | ≤1.0 µA at 24 V - Low standby current ensuring minimal power loss in always-on circuits |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with molded compound rated UL 94 V-0; cathode indicated by band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to protected line (e.g., +12 V rail); conducts only during forward bias or transient clamp |
| Cathode (banded end) | Clamp reference / Surge return path | Connected to ground or lower-potential node; defines polarity and establishes VWM/VBR directionality |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Glass passivated junction | Ensures stable electrical parameters and long-term leakage performance under thermal stress |
| MSL Level 1 (260 °C) | Enables standard lead-free reflow without moisture-induced failure during PCB assembly |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102, with JESD 201 Class 1A whisker resistance |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for sensitive MOSFETs and ICs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and system ground to clamp transients above 24 V. Use Value: Limits clamped voltage to 38.9 V during 1500 W surges, preventing damage to downstream 40 V-rated power management ICs and microcontrollers. | Use Scenario: Safeguarding analog input pins of industrial PLC analog I/O modules connected to 4–20 mA current loops. IC Role / Device Role / Timing Role: Standoff protection device mounted at connector entry point to absorb ESD and field-induced transients. Use Value: Sub-1 ns response and ≤1.0 µA leakage preserve signal integrity and measurement accuracy while surviving repeated 8 kV contact ESD events. |
| Telecom DC Power Input Protection | Consumer Device USB Power Line Protection |
Use Scenario: Securing 24 V DC input of PoE-powered telecom switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC input stage, upstream of DC-DC converters. Use Value: 1500 W rating handles multi-kA induced surges; DO-214AB package enables compact layout with 8 mm × 8 mm thermal pads for sustained power dissipation. | Use Scenario: Protecting 5 V USB VBUS lines in smart home hubs against hot-plug transients and external ESD coupling. IC Role / Device Role / Timing Role: Secondary-level TVS placed after fuse and upstream of USB controller's internal protection. Use Value: 24 V VWM allows safe operation across full USB 2.0/3.0 voltage tolerance range while clamping to 38.9 V to prevent latch-up in host controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/61 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (43.5 V at 9.2 A) | Suitable for space-constrained consumer electronics with lower surge exposure | Select when board area is limited and surge threat level is ≤400 W; not recommended for automotive load dump. |
| SMCJ24AHE3/57T | Identical electrical specs but AEC-Q101 qualified version (HE3 suffix); same DO-214AB package and marking | Required for automotive OEM designs requiring formal qualification evidence | Choose SMCJ24AHE3/57T when AEC-Q101 documentation and traceability are mandatory; otherwise SMCJ24-E3/57T suffices for industrial use. |
Compared with SMAJ24A-E3/61 and SMCJ24AHE3/57T, the SMCJ24-E3/57T delivers optimal balance of 1500 W surge capacity, automotive-grade robustness (AEC-Q101 optional), and standardized SMT manufacturability-making it ideal for industrial and Tier-2 automotive applications where full qualification is not mandated but high-energy clamping is essential.
Availability
SMCJ24-E3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC analog I/O modules, telecom DC power inputs, and consumer USB power line protection requiring stable component supply and consistent surge performance.
Supply support for SMCJ24-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, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The SMCJ series belongs to Vishay's TRANSZORB® transient voltage suppressor family, engineered specifically for high-power, high-reliability DC line protection in harsh environments such as automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the SMCJ24-E3/57T under maximum surge conditions?
The SMCJ24-E3/57T has a maximum clamping voltage (VC) of 38.9 V at its rated peak pulse current (IPPM) of 38.6 A, measured with a 10/1000 µs waveform. This value ensures protected circuits remain below critical voltage thresholds during high-energy transients. The SMCJ24-E3/57T maintains this clamping performance across its specified operating temperature range and is validated per JEDEC test standards.
Is the SMCJ24-E3/57T suitable for automotive applications?
Yes-the SMCJ24-E3/57T is RoHS-compliant and manufactured to meet AEC-Q101 requirements when ordered with the HE3 suffix (e.g., SMCJ24AHE3/57T). While the base SMCJ24-E3/57T shares identical electrical and mechanical specifications, formal AEC-Q101 qualification documentation applies only to HE3 variants. For non-OEM automotive subsystems, the SMCJ24-E3/57T is widely deployed in infotainment and body electronics where qualification is not mandated.
How does the SMCJ24-E3/57T differ from bi-directional SMCJ24CA variants?
The SMCJ24-E3/57T is unidirectional, meaning it conducts only in reverse bias above VBR and blocks forward current beyond ~3.5 V (VF at 100 A). In contrast, SMCJ24CA devices provide symmetrical clamping in both directions, making them suitable for AC signal lines or floating buses. The SMCJ24-E3/57T's cathode band marking and single-polarity behavior make it ideal for DC rail protection where polarity is fixed and leakage must be minimized in forward bias.
What PCB layout guidance applies to the SMCJ24-E3/57T for optimal thermal performance?
For reliable 1500 W surge handling, Vishay specifies mounting the SMCJ24-E3/57T on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. These pads must be thermally connected to internal or external ground planes to achieve the rated 75 °C/W junction-to-ambient thermal resistance. Avoid narrow traces between the SMCJ24-E3/57T and ground; use multiple vias under pads if layer stacking permits. The SMCJ24-E3/57T's DO-214AB package relies on this layout for sustained power dissipation.
Does the SMCJ24-E3/57T require derating at elevated ambient temperatures?
Yes-the SMCJ24-E3/57T must be derated above TA = 25 °C per Figure 2 in Vishay document 88394. At 85 °C ambient, its peak pulse power drops to approximately 75 % of 1500 W (i.e., ~1125 W), and at 125 °C, it falls to ~40 %. Derating ensures junction temperature remains within the +150 °C absolute maximum. Designers must apply this curve when sizing the SMCJ24-E3/57T for high-temperature enclosures or under-hood locations.
SMCJ24-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 34.9A
- 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)
SMCJ24-E3/57T FAQ
1.How can I place an order for SMCJ24-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ24-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 SMCJ24-E3/57T reliable?
The price and inventory of SMCJ24-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 SMCJ24-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ24-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ24-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ24-E3/57T?
SMCJ24-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ24-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 SMCJ24-E3/57T?
For technical support, including SMCJ24-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ24-E3/57T requirements.
6.How does Aetrix verify that SMCJ24-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ24-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 SMCJ24-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ24-E3/57T?
All SMCJ24-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ24-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 SMCJ24-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ24-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ24-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 …
