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Vishay General Semiconductor - Diodes Division SMA5J24CHE3/5A
- Part No.:
- SMA5J24CHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J24CHE3/5A.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,260
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Product details
Overview
SMA5J24CHE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor diode in DO-214AC (SMA) package, designed for high-energy surge protection on DC power rails and signal lines. It features 24 V standoff voltage (VWM), 26.7–29.5 V breakdown range (VBR), 38.9 V clamping voltage at 12.9 A peak pulse current (IPPM), and 500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive ECUs and industrial control modules.
For engineers reviewing the SMA5J24CHE3/5A datasheet, SMA5J24CHE3/5A pinout, SMA5J24CHE3/5A application, or SMA5J24CHE3/5A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode optimized for transient suppression in DC circuits. Its glass-passivated junction ensures stable breakdown behavior under repetitive surge stress, while low incremental surge resistance enables effective clamping during fast-rising transients up to 10/1000 µs.
Designed for surface-mount use in space-constrained environments, it delivers 500 W peak pulse power dissipation with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), supporting reliable operation across -55 °C to +150 °C ambient conditions when mounted per recommended pad layout.
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 test current - defines guaranteed avalanche onset range |
| VC @ IPPM | 38.9 V at 12.9 A - clamping voltage limiting downstream component stress during surge |
| PPPM | 500 W - peak transient energy handling capability with 10/1000 µs waveform |
| IFSM | 40 A - non-repetitive forward surge current rating (8.3 ms half-sine) |
| TJ max | +150 °C - maximum allowable junction temperature for sustained reliability |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with cathode band marking |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with two leads, cathode indicated by a band on one end; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102, qualified to MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point in normal bias | Connected to lower-potential side of protected circuit; conducts during forward surge events |
| Cathode (banded end) | Avalanche conduction terminal during reverse overvoltage | Connected to higher-potential rail; initiates clamping when VWM exceeded in reverse direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Glass passivated junction | Ensures consistent VBR tolerance and long-term stability under repeated surge stress |
| Low profile DO-214AC package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without moisture sensitivity concerns |
| RoHS-compliant & halogen-free | Meets JEDEC JS709A and EU Directive 2011/65/EU requirements for environmentally constrained applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and ground to clamp surges above 24 V. Use Value: Limits voltage seen by downstream regulators and microcontrollers to ≤38.9 V during 12.9 A transients, preventing latch-up or permanent damage. | Use Scenario: Shielding analog input lines of pressure or temperature sensors in PLC modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS connected in parallel with sensor signal path to shunt fast transients before reaching ADC front-end. Use Value: Maintains signal integrity by suppressing sub-100 ns ESD pulses while adding only 1.0 µA leakage at 24 V operating voltage. |
| DC Motor Drive Output Protection | Telecom Power Supply Clamp |
Use Scenario: Safeguarding H-bridge MOSFET sources and drains from flyback voltage spikes during PWM commutation. IC Role / Device Role / Timing Role: Unidirectional TVS installed across motor terminals or between drain and rail to absorb inductive kickback energy. Use Value: Dissipates up to 500 W of transient energy within 1000 µs, reducing MOSFET voltage overshoot and improving system MTBF. | Use Scenario: Clamping overvoltage on 24 V telecom rectifier outputs caused by lightning-induced surges on AC input lines. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC bus to limit surge propagation into downstream DC/DC converters. Use Value: Withstands 40 A single-half-sine surge (8.3 ms), enabling compliance with ITU-T K.20 and IEC 61000-4-5 Level 4 immunity testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ24A | Same DO-214AC package, identical VWM = 24 V, but VC = 38.9 V at 12.9 A and PPPM = 400 W (vs. 500 W) | Lower peak power rating reduces margin for high-energy transients like ISO 7637-2 Pulse 5a | Select SMA5J24CHE3/5A where full 500 W surge handling is required in automotive or industrial environments |
| ON Semiconductor 1.5SMC24A | DO-214AB (SMC) package - larger footprint (7.11 mm × 6.22 mm vs. 4.93 mm × 3.99 mm), same VWM/VC, PPPM = 1500 W | Higher power rating but incompatible with SMA land patterns; requires PCB redesign | Choose SMA5J24CHE3/5A when board space is constrained and 500 W suffices for defined threat levels |
Compared with SMAJ24A and 1.5SMC24A, the SMA5J24CHE3/5A offers optimal balance of AEC-Q101 qualification, compact DO-214AC footprint, and 500 W surge capacity - making it preferred for space-limited automotive and industrial designs where verified qualification and standardized assembly are critical.
Availability
SMA5J24CHE3/5A is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and DC motor drive output clamping requiring stable component supply and long-term lifecycle support.
Supply support for SMA5J24CHE3/5A 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, precision, and application-specific performance.
The SMA5J series is engineered for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where AEC-Q101 qualification and robust surge immunity are mandatory design requirements.
FAQ
What is the polarity configuration of the SMA5J24CHE3/5A?
The SMA5J24CHE3/5A is a unidirectional transient voltage suppressor diode. Its cathode is marked by a band on the DO-214AC package body, and it conducts in forward bias during positive surges while clamping reverse overvoltages above its 24 V standoff rating. This polarity configuration makes it suitable for DC rail protection where directionality matters, unlike bi-directional variants that lack marking and handle symmetrical transients.
Is the SMA5J24CHE3/5A qualified for automotive applications?
Yes, the SMA5J24CHE3/5A carries the HE3 suffix, indicating AEC-Q101 qualification. It has undergone stress testing for temperature cycling, mechanical shock, humidity, and high-temperature operating life per the AEC-Q101 standard, confirming suitability for under-hood and chassis-mounted automotive electronics such as body control modules and ADAS sensor interfaces.
What does the "5A" in SMA5J24CHE3/5A signify?
The "5A" in SMA5J24CHE3/5A denotes the preferred package code for 13-inch diameter plastic tape and reel delivery, containing 7500 units per reel. This packaging format supports high-volume automated SMT assembly and is distinct from the "61" code used for 7-inch reels with 1800 units - both share identical electrical and thermal specifications.
How does the clamping voltage of SMA5J24CHE3/5A compare to its breakdown voltage?
The SMA5J24CHE3/5A has a minimum breakdown voltage (VBR) of 26.7 V and a maximum clamping voltage (VC) of 38.9 V at 12.9 A. This 12.2 V differential reflects the device's incremental surge resistance and ensures predictable voltage limiting during transients - critical for protecting downstream components rated for ≤40 V absolute maximum ratings.
Can SMA5J24CHE3/5A be used in place of a bi-directional TVS like SMA5J24CA?
No - the SMA5J24CHE3/5A is unidirectional and must not replace bi-directional types like SMA5J24CA without circuit review. Bi-directional variants suppress surges in both polarities and lack cathode marking, whereas SMA5J24CHE3/5A only clamps reverse overvoltages and conducts forward current. Substitution would leave the circuit unprotected against negative-going transients unless topology is redesigned.
SMA5J24CHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 11.6A
- Power - Peak Pulse:
- 500W
- 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-214AC (SMA)
SMA5J24CHE3/5A FAQ
1.How can I place an order for SMA5J24CHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J24CHE3/5A 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 SMA5J24CHE3/5A reliable?
The price and inventory of SMA5J24CHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J24CHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J24CHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J24CHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J24CHE3/5A?
SMA5J24CHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J24CHE3/5A 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 SMA5J24CHE3/5A?
For technical support, including SMA5J24CHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J24CHE3/5A requirements.
6.How does Aetrix verify that SMA5J24CHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J24CHE3/5A 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 SMA5J24CHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J24CHE3/5A?
All SMA5J24CHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J24CHE3/5A, 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 SMA5J24CHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J24CHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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