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Vishay General Semiconductor - Diodes Division SMA5J24CA-E3/61
- Part No.:
- SMA5J24CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J24CA-E3/61.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J24CA-E3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 24 V stand-off voltage (VWM), 38.9 V clamping voltage (VC) at 12.9 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMA5J24CA-E3/61 datasheet, SMA5J24CA-E3/61 pinout, SMA5J24CA-E3/61 application, or SMA5J24CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, AEC-Q101 qualification eligibility (via HE3 suffix), RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal lines without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while low RθJA (80 °C/W) supports thermal reliability under repetitive surge conditions.
The device complies with ANSI/IEEE C62.35 for transient suppression and meets J-STD-020 MSL Level 1 (260 °C peak reflow). It is rated for -55 °C to +150 °C operating junction temperature and exhibits ≤1 µA reverse leakage at VWM - critical for low-power sensor interface protection where standby current must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR min/max | 26.7 V / 29.5 V - breakdown voltage range at 1 mA test current; ensures predictable turn-on threshold across production lots. |
| VC @ IPPM | 38.9 V at 12.9 A - clamped voltage during 10/1000 µs surge; limits stress on downstream 3.3 V or 5 V logic components. |
| PPPM | 500 W - peak pulse power handling per single transient; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | ≤1 µA - ultra-low reverse leakage at stand-off voltage; preserves battery life in always-on automotive modules. |
| TJ max | +150 °C - maximum junction temperature rating; enables use in under-hood automotive environments. |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm pad layout; compatible with J-STD-002 solderability standards. |
Pinout & Package
SMA5J24CA-E3/61 uses the SMA (DO-214AC) package: molded epoxy case with two coplanar matte tin-plated leads, no polarity marking (bidirectional), and UL 94 V-0 flammability rating. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping allows placement across any two points needing overvoltage protection without orientation constraints. |
| Case (non-connected) | Thermal and mechanical interface | No electrical connection; serves as heat-sinking surface when mounted on copper pads per recommended layout (0.2" × 0.2"). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., RS-485), and ungrounded power rails without polarity-sensitive layout. |
| 500 W peak pulse power | Withstands multiple 10/1000 µs transients up to 500 W without degradation - exceeds ISO 16750-2 automotive surge requirements. |
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates parameter drift caused by moisture ingress or metallization migration. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without preconditioning - reduces manufacturing complexity and cost. |
| AEC-Q101 qualification path | HE3/HM3 variants are qualified for automotive applications; E3/61 variant shares identical die and process, enabling qualification traceability. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and body control module inputs against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and ground to clamp ±100 V transients within 1 ns. Use Value: Limits voltage seen by 5 V LDO regulators to ≤38.9 V, preventing latch-up and ensuring ASIL-B system integrity. | Use Scenario: Shielding 4–20 mA current loop receivers from ESD and inductive switching noise in PLC analog input modules. IC Role / Device Role / Timing Role: Placed across input terminals to shunt >8 kV contact ESD pulses before reaching precision op-amps. Use Value: Maintains <1 µA leakage at 24 V supply, avoiding offset errors in µA-level current measurement circuits. |
| Telecom Data Line Surge Suppression | Consumer USB Port Overvoltage Protection |
Use Scenario: Safeguarding Ethernet PHY magnetics and PoE injectors from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Differential-mode TVS across twisted-pair lines to suppress common-mode transients up to 500 W. Use Value: Symmetrical clamping ensures balanced line integrity during 10/1000 µs surges, preserving signal eye diagram compliance. | Use Scenario: Preventing damage to USB-C port controllers during hot-plug events and cable-induced transients. IC Role / Device Role / Timing Role: Bidirectional suppressor across VBUS and GND to clamp ±20 V overshoots from faulty chargers. Use Value: 38.9 V clamping prevents overvoltage stress on 5 V tolerant USB PHYs while maintaining <1 µA standby leakage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J24A-E3/61 | Unidirectional version; same VWM (24 V), VC (38.9 V), PPPM (500 W), but cathode-marked and polarized. | Requires correct orientation on PCB; unsuitable for AC or floating signal lines. | Select SMA5J24A-E3/61 only when protecting DC rails with defined polarity and space-constrained layouts where unidirectional performance suffices. |
| SMBJ24CA-T | Same VWM (24 V) and bidirectional function, but SMB (DO-214AA) package - 5.3 mm × 4.1 mm footprint, 10% larger than SMA. | Higher thermal mass improves surge endurance but requires revised PCB land pattern and may not fit tight pitch designs. | Choose SMBJ24CA-T when higher IPPM (14.3 A) and lower RθJA (60 °C/W) are needed for repeated surge exposure in industrial gateways. |
Compared with SMA5J24A-E3/61, the SMA5J24CA-E3/61 eliminates polarity dependency for flexible layout and differential protection; versus SMBJ24CA-T, it offers smaller footprint and identical clamping performance but trades off some thermal robustness for space-constrained automotive ECUs.
Availability
SMA5J24CA-E3/61 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC analog inputs, telecom data line protection, and consumer USB-C port hardening requiring stable component supply and RoHS-compliant sourcing.
Supply support for SMA5J24CA-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, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, thermally demanding applications - targeting automotive infotainment, ADAS sensors, industrial automation, and 5G infrastructure where fast, repeatable clamping is mission-critical.
FAQ
What is the clamping voltage of the SMA5J24CA-E3/61 under a 10/1000 µs surge?
The SMA5J24CA-E3/61 has a maximum clamping voltage (VC) of 38.9 V at 12.9 A peak pulse current (IPPM) for a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88875. The clamping performance ensures downstream 24 V-rated ICs remain within safe operating limits during surge events.
Is the SMA5J24CA-E3/61 suitable for automotive applications?
Yes - the SMA5J24CA-E3/61 shares the same die and process as AEC-Q101-qualified variants (e.g., SMA5J24CAHE3_A). While the E3/61 suffix denotes commercial grade, its construction - glass-passivated junction, MSL Level 1, -55 °C to +150 °C TJ range, and RoHS compliance - aligns with automotive environmental requirements. System-level qualification remains the customer's responsibility per Vishay's disclaimer.
Does the SMA5J24CA-E3/61 have polarity markings on the package?
No - the SMA5J24CA-E3/61 is a bidirectional TVS diode and carries no cathode band or polarity marking on the SMA (DO-214AC) case. This reflects its symmetrical internal structure, allowing installation in either orientation across protected lines. Unidirectional variants like SMA5J24A-E3/61 do feature a cathode band.
What is the maximum reverse leakage current for the SMA5J24CA-E3/61 at its stand-off voltage?
The SMA5J24CA-E3/61 exhibits a maximum reverse leakage current (ID) of 1 µA at its 24 V stand-off voltage (VWM), tested at TA = 25 °C. This ultra-low leakage is critical for battery-powered or always-on systems where quiescent current must be minimized - such as automotive door modules or IoT sensor nodes.
Can the SMA5J24CA-E3/61 be used in place of the SMA5J24A-E3/61?
Only if bidirectional protection is required - the SMA5J24CA-E3/61 cannot replace SMA5J24A-E3/61 in unidirectional DC rail applications without verifying circuit symmetry. While both share identical VWM, VC, and PPPM, the CA version lacks polarity definition and clamps equally in both directions. Substitution requires layout review to ensure no unintended conduction paths exist.
SMA5J24CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMA5J24CA-E3/61 FAQ
1.How can I place an order for SMA5J24CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J24CA-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 SMA5J24CA-E3/61 reliable?
The price and inventory of SMA5J24CA-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 SMA5J24CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J24CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J24CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J24CA-E3/61?
SMA5J24CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J24CA-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 SMA5J24CA-E3/61?
For technical support, including SMA5J24CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J24CA-E3/61 requirements.
6.How does Aetrix verify that SMA5J24CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J24CA-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 SMA5J24CA-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J24CA-E3/61?
All SMA5J24CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J24CA-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 SMA5J24CA-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J24CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J24CA-E3/61 Tags
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