My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ24AHE3/57T
- Part No.:
- SMCJ24AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ24AHE3/57T.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,923
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ24AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 38.9 V at 38.6 A peak pulse current, with 24 V stand-off voltage and 1500 W peak pulse power rating. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMCJ24AHE3/57T datasheet, SMCJ24AHE3/57T pinout, SMCJ24AHE3/57T application, or SMCJ24AHE3/57T equivalent, key selection criteria include clamping voltage (VC = 38.9 V), breakdown voltage range (26.7–29.5 V), AEC-Q101 qualification, RoHS compliance, and SMC package thermal performance (RθJA = 75 °C/W).
Technical Context
The SMCJ24AHE3/57T operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its minimum breakdown voltage of 26.7 V. Its glass-passivated junction ensures stable clamping under repetitive surge conditions, and its low incremental surge resistance enables effective energy diversion during 10/1000 μs transients.
Designed for PCB-level protection, it features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, meets MSL Level 1 per J-STD-020, and supports automated placement. Polarity is marked by a cathode band; no marking on bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 26.7 V / 29.5 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold |
| VC @ IPPM | 38.9 V - Clamped voltage seen by protected circuit during 38.6 A 10/1000 μs surge |
| PPPM | 1500 W - Peak transient power it can absorb without failure under standardized waveform |
| IPPM | 38.6 A - Maximum non-repetitive surge current it safely conducts at VC |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient; informs heatsinking requirements on standard 8 mm × 8 mm copper pads |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads. Cathode identified by molded band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V supply or sensor input); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| 1500 W peak pulse power | Withstands high-energy transients from load dump or inductive switching in 12 V/24 V systems |
| Fast response time (< 1 ps) | Clamps before sensitive downstream components experience overvoltage stress |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage margin between breakdown and clamping, improving protection headroom |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture sensitivity concerns |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply rails in body control modules against load dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp surges before regulator stage. Use Value: Limits voltage to ≤38.9 V during 38.6 A transients, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Shielding analog inputs of pressure or temperature sensors in factory automation PLCs from ESD and switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground, preserving signal integrity up to 1 MHz. Use Value: Clamps fast-rising transients while maintaining <1.0 μA leakage at 24 V, avoiding sensor offset errors. |
| Telecom Power Supply Input | Motor Drive Gate Driver Protection |
|
Use Scenario: Safeguarding AC/DC front-end rectifiers and PFC controllers in telecom base station power supplies. IC Role / Device Role / Timing Role: Mounted across bulk capacitor input to suppress line-side surges per IEC 61000-4-5 Level 4. Use Value: Absorbs 1500 W pulses without degradation, ensuring uninterrupted operation during lightning-induced grid disturbances. |
Use Scenario: Protecting high-side and low-side gate drivers in BLDC motor inverters from shoot-through-inducing voltage spikes. IC Role / Device Role / Timing Role: Placed between gate and source terminals of Si MOSFETs to clamp Miller-induced overshoot. Use Value: Responds in sub-nanosecond time to limit gate voltage to safe levels (< ±20 V), preventing unintended turn-on. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/61 | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Suitable only for lower-energy transients; not rated for automotive AEC-Q101 | Select when space-constrained and surge energy is limited to ≤400 W |
| SMCJ24CAHE3/57T | Bidirectional variant; same VWM, VBR, and VC, but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur | Choose for differential bus protection (e.g., CAN, RS-485) or ungrounded sensor outputs |
Compared with SMCJ24AHE3/57T, SMAJ24A-E3/61 offers smaller size but reduced surge capability and no automotive qualification, while SMCJ24CAHE3/57T provides bidirectional clamping at identical power rating-making it essential for AC or polarity-agnostic protection schemes.
Availability
SMCJ24AHE3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom power supply input, and motor drive gate driver protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ24AHE3/57T 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMCJ series was developed for high-power transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where robustness against ISO 7637, IEC 61000-4-5, and ESD events is mandatory.
FAQ
What is the clamping voltage of SMCJ24AHE3/57T at its rated peak pulse current?
The SMCJ24AHE3/57T has a maximum clamping voltage (VC) of 38.9 V when subjected to its rated peak pulse current (IPPM) of 38.6 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components in the protected circuit.
Is SMCJ24AHE3/57T qualified for automotive applications?
Yes, SMCJ24AHE3/57T is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock-making SMCJ24AHE3/57T suitable for under-hood and chassis-mounted automotive electronics.
What does the "HE3" suffix indicate in SMCJ24AHE3/57T?
The "HE3" suffix in SMCJ24AHE3/57T denotes RoHS-compliant construction with AEC-Q101 qualification. "H" indicates automotive grade, "E3" specifies RoHS-compliant matte tin plating and commercial-grade reliability, distinguishing it from non-automotive "E3" or halogen-free "HM3" variants.
Can SMCJ24AHE3/57T be used in bidirectional signal protection?
No-SMCJ24AHE3/57T is unidirectional and must be oriented with cathode toward the protected line. For bidirectional protection, use SMCJ24CAHE3/57T, which features symmetric breakdown and clamping in both polarities and carries the "CA" suffix per Vishay's naming convention.
What is the thermal resistance of SMCJ24AHE3/57T, and how does it affect layout?
The SMCJ24AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain safe junction temperatures under repeated surges, PCB layout must provide adequate copper area and avoid excessive trace length between device terminals and thermal planes.
SMCJ24AHE3/57T 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 38.6A
- 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)
SMCJ24AHE3/57T FAQ
1.How can I place an order for SMCJ24AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ24AHE3/57T 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 SMCJ24AHE3/57T reliable?
The price and inventory of SMCJ24AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ24AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ24AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ24AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ24AHE3/57T?
SMCJ24AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ24AHE3/57T 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 SMCJ24AHE3/57T?
For technical support, including SMCJ24AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ24AHE3/57T requirements.
6.How does Aetrix verify that SMCJ24AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ24AHE3/57T 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 SMCJ24AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ24AHE3/57T?
All SMCJ24AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ24AHE3/57T, 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 SMCJ24AHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ24AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ24AHE3/57T 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 …
