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Vishay General Semiconductor - Diodes Division SMA5J24HE3/5A
- Part No.:
- SMA5J24HE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J24HE3/5A.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,711
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Product details
Overview
SMA5J24HE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor diode in DO-214AC (SMA) package, designed for high-energy surge protection on power and signal lines. It features 24 V standoff voltage (VWM), 26.7–29.5 V breakdown voltage (VBR), 38.9 V clamping voltage at 12.9 A peak pulse current (IPPM), 500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMA5J24HE3/5A datasheet, SMA5J24HE3/5A pinout, SMA5J24HE3/5A application, or SMA5J24HE3/5A equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, low incremental surge resistance, RoHS-compliant matte tin-plated leads, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This device operates as a clamping-type TVS diode, leveraging an avalanche breakdown mechanism to divert transient energy away from protected circuitry. Its 500 W peak pulse power rating applies under standardized 10/1000 µs waveform conditions, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead).
The SMA5J24HE3/5A exhibits 1.0 µA maximum reverse leakage at 24 V standoff, 3.5 V forward voltage at 25 A (per datasheet note), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is qualified to AEC-Q101, confirming suitability for automotive electronics subjected to harsh thermal and mechanical stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected line. |
| VBR min/max | 26.7 V / 29.5 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 38.9 V - Clamped voltage during 12.9 A surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 500 W - Peak pulse power handling (10/1000 µs); quantifies single-event surge energy absorption capability. |
| TJ max | +150 °C - Maximum junction temperature; sets thermal derating limits for sustained operation. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; informs PCB pad design and airflow requirements. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, low-profile plastic case with cathode band marking. Meets UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration. |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line; avalanche conduction initiates here during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives. |
| AEC-Q101 qualification | Validates performance across automotive temperature, vibration, and lifetime stress profiles. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision. |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow without preconditioning or special handling. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control units (ECUs) against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and DC-DC input stage. Use Value: Limits transient voltage to ≤38.9 V, preventing damage to 36 V-rated regulators and microcontrollers. | Use Scenario: Safeguarding analog inputs of industrial pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Front-end surge suppression on 4–20 mA or 0–10 V signal lines exposed to EMI and field wiring faults. Use Value: Withstands 500 W surges while maintaining <1.0 µA leakage at 24 V, preserving signal integrity and measurement accuracy. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding PoE-powered network switches and base stations from lightning-induced surges on 48 V DC inputs. IC Role / Device Role / Timing Role: Primary-level TVS on bulk DC input prior to filtering and regulation stages. Use Value: Fast response time and 38.9 V clamping ensure downstream DC-DC converters remain within absolute maximum ratings. | Use Scenario: Suppressing commutation spikes generated by brushed DC motors in smart home appliances (e.g., washing machines, HVAC blowers). IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals or H-bridge outputs. Use Value: 500 W rating handles repetitive 8.3 ms half-sine surges up to 40 A (IFSM), extending MOSFET lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J24A-E3/5A | Commercial-grade variant (non-AEC-Q101); identical electrical specs and DO-214AC package. | Lacks automotive qualification; suitable for industrial/commercial designs not requiring AEC validation. | Select when cost sensitivity outweighs automotive compliance requirements. |
| SMC5J24AHE3/5A | Same VWM/VC but in larger DO-214AB (SMC) package; higher thermal mass and 6.5 K/W RθJA. | Better thermal performance for high-duty-cycle surges; requires larger PCB footprint. | Choose when system-level thermal management demands lower junction temperature rise. |
Compared with SMA5J24A-E3/5A, the SMA5J24HE3/5A adds AEC-Q101 qualification without electrical trade-offs; compared with SMC5J24AHE3/5A, it offers identical protection in a space-constrained SMA footprint but with higher thermal resistance-making it optimal for automotive PCBs where layout area is limited and surge duty cycle is moderate.
Availability
SMA5J24HE3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom DC power inputs, and consumer appliance motor drives requiring stable component supply and AEC-Q101 assurance.
Supply support for SMA5J24HE3/5A 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, MOSFETs, and TVS devices with emphasis on reliability, power density, and automotive-grade qualification.
The SMA5J series is engineered specifically for high-power-density transient suppression in space-constrained automotive and industrial systems, balancing robust surge handling with surface-mount manufacturability and AEC-Q101 compliance.
FAQ
What is the clamping voltage of the SMA5J24HE3/5A under maximum rated surge current?
The SMA5J24HE3/5A has a maximum clamping voltage (VC) of 38.9 V at its rated peak pulse current (IPPM) of 12.9 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during transient events. The SMA5J24HE3/5A maintains this clamping performance across its full operating temperature range.
Is the SMA5J24HE3/5A suitable for automotive applications?
Yes, the SMA5J24HE3/5A is explicitly AEC-Q101 qualified, confirming its reliability for automotive use cases including engine control units, body electronics, and infotainment power supplies. Its construction includes glass passivation, matte tin-plated leads, and MSL Level 1 reflow compatibility-all validated per automotive stress testing protocols. The SMA5J24HE3/5A is designated for automotive-grade deployment by Vishay.
What does the "HE3" suffix indicate in SMA5J24HE3/5A?
The "HE3" suffix denotes two key attributes: "H" indicates AEC-Q101 qualification, and "E3" specifies RoHS-compliant, commercial-grade packaging with JESD 201 Class 1A whisker resistance. This distinguishes SMA5J24HE3/5A from non-automotive variants like SMA5J24A-E3/5A and confirms compliance with both environmental and automotive reliability standards. The SMA5J24HE3/5A is fully traceable to these specifications.
How does the SMA5J24HE3/5A differ from bi-directional TVS diodes?
The SMA5J24HE3/5A is unidirectional, meaning it conducts only in reverse bias during overvoltage events and blocks forward current above ~3.5 V. Unlike bi-directional types (e.g., SMA5J24CA), it cannot suppress transients on AC-coupled or dual-polarity lines without additional circuitry. Its cathode band marking enables correct orientation during placement, and its electrical parameters (VWM, VBR, VC) are specified for reverse operation only. The SMA5J24HE3/5A is optimized for DC rail protection.
What is the recommended PCB pad layout for the SMA5J24HE3/5A?
Vishay specifies mounting the SMA5J24HE3/5A on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated thermal and surge performance. This layout ensures adequate heat dissipation and current spreading for the 500 W pulse rating. Deviating from this pad size may reduce IPPM capability and increase junction temperature. The SMA5J24HE3/5A datasheet provides exact DO-214AC outline dimensions and thermal derating curves based on this layout.
SMA5J24HE3/5A 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMA5J24HE3/5A FAQ
1.How can I place an order for SMA5J24HE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J24HE3/5A 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 SMA5J24HE3/5A reliable?
The price and inventory of SMA5J24HE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J24HE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J24HE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J24HE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J24HE3/5A?
SMA5J24HE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J24HE3/5A 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 SMA5J24HE3/5A?
For technical support, including SMA5J24HE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J24HE3/5A requirements.
6.How does Aetrix verify that SMA5J24HE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J24HE3/5A 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 SMA5J24HE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J24HE3/5A?
All SMA5J24HE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J24HE3/5A, 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 SMA5J24HE3/5A part is unused and in its original packaging.
Return procedure for SMA5J24HE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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