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Vishay General Semiconductor - Diodes Division SMA5J24A-E3/61
- Part No.:
- SMA5J24A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J24A-E3/61.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,631
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Product details
Overview
SMA5J24A-E3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 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, 500 W peak pulse power rating, and operates from –55 °C to +150 °C junction temperature - deployed in automotive power rail and industrial sensor interface protection.
For engineers reviewing the SMA5J24A-E3/61 datasheet, SMA5J24A-E3/61 pinout, SMA5J24A-E3/61 application, or SMA5J24A-E3/61 equivalent, key selection criteria include clamping performance under 10/1000 µs transients, unidirectional polarity marking, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance, enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients. Its unidirectional configuration provides forward conduction capability (IFSM = 40 A, 8.3 ms half-sine) while maintaining reverse-biased clamping behavior up to 38.9 V at rated IPPM.
The device is thermally optimized for surface-mount operation with RθJA = 80 °C/W (on 0.2" × 0.2" pads) and RθJL = 25 °C/W, supporting reliable power dissipation in compact PCB layouts. It meets JESD201 Class 2 whisker resistance and is qualified to AEC-Q101 when ordered with HE3/HM3 suffixes - though SMA5J24A-E3/61 itself is commercial-grade RoHS-compliant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Verified breakdown threshold range ensures consistent turn-on across production lots. |
| VC @ IPPM | 38.9 V at 12.9 A - Clamping voltage under 10/1000 µs surge defines maximum stress imposed on protected downstream ICs. |
| PPPM | 500 W - Peak pulse power handling capacity determines survivability against standardized lightning/surge waveforms. |
| IFSM | 40 A - Non-repetitive forward surge rating enables robust protection against inductive kickback in DC power circuits. |
| TJ range | –55 °C to +150 °C - Wide junction temperature range supports deployment in under-hood automotive and industrial environments. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; cathode indicated by band at one end; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference | Connected to lower-potential side (e.g., ground or return path); defines polarity-sensitive placement during layout. |
| Cathode (banded end) | Clamping node / surge current sink | Connected to protected line (e.g., 24 V rail); conducts transient energy to ground when VLINE exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Low profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment. |
| Glass passivated junction | Ensures stable electrical characteristics over time and environmental stress, improving long-term reliability in harsh conditions. |
| MSL Level 1 (260 °C peak) | Eliminates need for pre-baking prior to reflow soldering, reducing manufacturing complexity and cost. |
| 500 W peak pulse power | Provides robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without degradation. |
| RoHS-compliant (E3 suffix) | Meets global environmental compliance requirements for commercial electronics without halogen restrictions. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) and body control modules (BCMs) from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and system input filter to shunt surge energy to chassis ground. Use Value: Limits voltage excursion to ≤38.9 V during 12.9 A transients, preventing damage to downstream DC/DC converters and microcontrollers. |
Use Scenario: Safeguarding analog inputs of industrial PLC analog I/O modules connected to 4–20 mA current loops. IC Role / Device Role / Timing Role: Reverse-biased TVS across signal and return lines to absorb field-induced surges before reaching precision amplifier front-ends. Use Value: Maintains signal integrity by clamping transients within 1 ns, with leakage <1 µA at 24 V to avoid measurement offset errors. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drivers |
Use Scenario: Surge protection on -48 V DC feeding telecom base station RF amplifiers and backhaul interfaces. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at board edge to intercept lightning-induced common-mode surges entering via power connector. Use Value: Withstands repeated 500 W pulses without parameter shift, ensuring multi-year field reliability in outdoor cabinets. |
Use Scenario: Input-side protection for BLDC motor driver boards in smart home appliances exposed to inductive switching noise. IC Role / Device Role / Timing Role: TVS placed across H-bridge high-side supply to suppress flyback voltage spikes during MOSFET turn-off. Use Value: 40 A IFSM rating handles worst-case inductive kickback, eliminating need for external snubbers in cost-sensitive designs. |
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 vs. 500 W); same VWM/VC; identical SMA package and pinout. | Less suitable for IEC 61000-4-5 Level 4; adequate for Level 3 (2 kV/12 Ω) or lower-energy ESD events. | Select SMAJ24A-E3/61 only if system-level surge testing confirms 400 W sufficiency and BOM cost reduction is prioritized. |
| SMBJ24A-E3/52 | Same electrical specs but SMB (DO-214AA) package - 2.54 mm lead pitch vs. SMA's 3.99 mm; 10% larger footprint; RθJA = 65 °C/W. | Better thermal performance but requires PCB redesign; not drop-in compatible due to different pad layout and terminal spacing. | Choose SMBJ24A-E3/52 only when higher thermal margin is critical and layout revision is feasible. |
Compared with SMAJ24A-E3/61 and SMBJ24A-E3/52, the SMA5J24A-E3/61 delivers superior surge energy handling in the smallest standard footprint, making it optimal for space-constrained 24 V systems requiring Level 4 immunity without thermal derating penalties.
Availability
SMA5J24A-E3/61 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feed surge suppression requiring stable component supply across high-volume production cycles.
Supply support for SMA5J24A-E3/61 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 and application-specific performance.
The SMA5J series was engineered for high-power-density transient suppression in automotive, industrial, and telecom infrastructure - delivering 500 W surge capability in the compact SMA package to replace bulkier alternatives.
FAQ
What is the clamping voltage of the SMA5J24A-E3/61 under a 10/1000 µs surge?
The SMA5J24A-E3/61 clamps to a maximum of 38.9 V when subjected to its rated peak pulse current of 12.9 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88875 and defines the upper voltage limit imposed on protected circuitry during surge events.
Is the SMA5J24A-E3/61 suitable for automotive applications requiring AEC-Q101 qualification?
No - the SMA5J24A-E3/61 carries the E3 suffix, indicating RoHS-compliant commercial grade only. For AEC-Q101 qualification, the correct ordering code is SMA5J24AHE3_A (with HE3 suffix), which undergoes additional stress testing and process controls per the AEC standard.
What is the thermal resistance of the SMA5J24A-E3/61 when mounted on standard PCB pads?
When mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per the recommended layout, the SMA5J24A-E3/61 exhibits a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W. Its junction-to-lead resistance (RθJL) is 25 °C/W, supporting efficient heat transfer to the PCB.
Does the SMA5J24A-E3/61 have bidirectional capability?
No - the SMA5J24A-E3/61 is a unidirectional TVS diode, as indicated by the "A" suffix (vs. "CA" for bidirectional). It conducts in forward bias and clamps in reverse bias; polarity must be observed during placement, with the banded end connected to the protected line.
What is the maximum leakage current of the SMA5J24A-E3/61 at its standoff voltage?
At its rated standoff voltage of 24 V (VWM), the SMA5J24A-E3/61 exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C, as specified in the Electrical Characteristics table of Vishay document 88875 - ensuring minimal impact on low-power sensor or battery-backed circuits.
SMA5J24A-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 12.9A
- Power - Peak Pulse:
- 500W
- 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-214AC (SMA)
SMA5J24A-E3/61 FAQ
1.How can I place an order for SMA5J24A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J24A-E3/61 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 SMA5J24A-E3/61 reliable?
The price and inventory of SMA5J24A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J24A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J24A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J24A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J24A-E3/61?
SMA5J24A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J24A-E3/61 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 SMA5J24A-E3/61?
For technical support, including SMA5J24A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J24A-E3/61 requirements.
6.How does Aetrix verify that SMA5J24A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J24A-E3/61 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 SMA5J24A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J24A-E3/61?
All SMA5J24A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J24A-E3/61, 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 SMA5J24A-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J24A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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