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Vishay General Semiconductor - Diodes Division SMA5J28CA-E3/61
- Part No.:
- SMA5J28CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J28CA-E3/61.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,001
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Product details
Overview
SMA5J28CA-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 28 V standoff voltage (VWM), 31.1–34.4 V breakdown voltage (VBR at 1 mA), 45.4 V clamping voltage (VC) at 11.0 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard automotive sensor interfaces and industrial I/O circuits against ESD and load dump transients.
For engineers reviewing the SMA5J28CA-E3/61 datasheet, SMA5J28CA-E3/61 pinout, SMA5J28CA-E3/61 application, or SMA5J28CA-E3/61 equivalent, key selection criteria include bidirectional polarity, 500 W surge capability, 28 V working voltage compatibility with 3.3 V/5 V/24 V systems, thermal resistance (RθJA = 80 °C/W), and AEC-Q101 qualification eligibility via HE3/HM3 variants.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports consistent clamping performance under repetitive surges.
The device is rated for junction temperatures from –55 °C to +150 °C and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. Its SMA (DO-214AC) package delivers high power density in a surface-mount footprint optimized for automated placement and thermal dissipation on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating range for 24 V nominal systems. |
| VBR (min/max) | 31.1 V / 34.4 V at 1 mA - Confirmed breakdown threshold ensuring reliable turn-on during overvoltage events. |
| VC @ IPPM | 45.4 V at 11.0 A - Clamped voltage seen by protected circuit during 500 W surge; limits stress on downstream ICs. |
| PPPM | 500 W - Peak pulse power handling with 10/1000 µs waveform; enables robust protection against ISO 7637-2 Pulse 1/2/5a/b. |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ Range | –55 °C to +150 °C - Full automotive-grade temperature operation without derating up to 125 °C ambient. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bidirectional terminals - either end serves as anode or cathode depending on transient polarity; no band marking required. |
| Case (body) | Thermal and mechanical interface | Plastic-molded body provides electrical isolation and transfers heat to PCB copper pads; UL 94 V-0 rated. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| Low-profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment. |
| 500 W peak pulse power | Provides immunity to severe transients including ISO 16750-2 load dump (up to 120 V) in automotive 12 V systems. |
| MSL Level 1 rating | Supports single-reflow assembly without moisture sensitivity concerns; peak reflow temperature up to 260 °C. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ESD and inductive switching spikes in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤45.4 V, preventing latch-up or gate oxide damage in 3.3 V/5 V sensor signal conditioning circuits. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input channels to absorb 500 W surges without degradation. Use Value: Maintains system uptime by preventing false triggering or permanent failure of optocoupler or microcontroller input stages. |
| Telecom Power Line Protection | Consumer USB Port ESD Suppression |
Use Scenario: Secondary surge protection on 48 V PoE (Power over Ethernet) front-end circuits in network switches and base stations. IC Role / Device Role / Timing Role: Standoff-rated clamp on DC feed line to limit voltage overshoot during lightning-induced surges. Use Value: Complies with IEC 61000-4-5 Level 4 (4 kV) when combined with series impedance, preserving PoE controller functionality. | Use Scenario: Board-level ESD protection for USB 2.0 data lines and VBUS in smart home hubs and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed adjacent to connector to shunt ±15 kV contact discharge. Use Value: Achieves <1.0 µA leakage at 5.5 V, avoiding signal attenuation while meeting IEC 61000-4-2 Level 4 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J28A-E3/61 | Unidirectional; 28 V VWM, same VBR/VC/PPPM; includes cathode band marking. | Requires correct polarity placement; unsuitable for AC-coupled or differential lines with bidirectional transients. | Select only if circuit topology guarantees unidirectional surge direction and polarity alignment is assured. |
| SMCJ28CA-E3/73 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; 1500 W PPPM. | Higher surge capacity suits harsher environments (e.g., heavy-duty vehicle alternator load dump), but requires larger PCB area. | Choose when 500 W is insufficient and board space allows SMC footprint; not drop-in compatible with SMA layout. |
Compared with SMA5J28CA-E3/61, the unidirectional SMA5J28A-E3/61 demands strict polarity awareness, while the higher-power SMCJ28CA-E3/73 trades compactness for enhanced ruggedness - making SMA5J28CA-E3/61 optimal for space-constrained bidirectional protection where 500 W suffices.
Availability
SMA5J28CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power feeds, and consumer USB port protection requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SMA5J28CA-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 efficiency, and automotive qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained applications, targeting automotive, industrial, and communications systems needing robust, AEC-Q101-capable TVS solutions.
FAQ
What is the polarity configuration of SMA5J28CA-E3/61?
SMA5J28CA-E3/61 is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients without polarity dependency. Unlike unidirectional variants (e.g., SMA5J28A-E3/61), it has no cathode band marking and can be mounted in either orientation on the PCB - essential for protecting AC-coupled signals or differential buses like CAN or RS-485.
Does SMA5J28CA-E3/61 meet automotive qualification standards?
SMA5J28CA-E3/61 itself is RoHS-compliant and commercial-grade (E3 suffix). However, the same die in HE3 or HM3 packaging (e.g., SMA5J28CAHE3_A) is AEC-Q101 qualified. For automotive production use, specify the HE3 variant to ensure qualification; SMA5J28CA-E3/61 remains suitable for non-automotive industrial and telecom applications requiring identical electrical performance.
What is the maximum clamping voltage of SMA5J28CA-E3/61 under surge conditions?
The maximum clamping voltage (VC) of SMA5J28CA-E3/61 is 45.4 V at 11.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value represents the upper limit of voltage imposed on the protected circuit during a full 500 W transient event - critical for ensuring downstream 3.3 V, 5 V, or 24 V ICs remain within absolute maximum ratings.
How does the SMA (DO-214AC) package of SMA5J28CA-E3/61 affect thermal performance?
SMA5J28CA-E3/61 in SMA (DO-214AC) package has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. This enables effective heat dissipation during transient events but requires adherence to recommended pad layout; reducing pad size increases thermal impedance and may lower surge endurance in repetitive stress scenarios.
Can SMA5J28CA-E3/61 be used in place of SMA5J28A-E3/61?
No - SMA5J28CA-E3/61 is bidirectional while SMA5J28A-E3/61 is unidirectional. Substituting them without circuit review risks ineffective protection: the unidirectional part will not clamp negative transients, potentially damaging sensitive components. Use SMA5J28CA-E3/61 only where bidirectional surge immunity is required, such as on differential lines or AC-coupled interfaces.
SMA5J28CA-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):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 11A
- 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)
SMA5J28CA-E3/61 FAQ
1.How can I place an order for SMA5J28CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J28CA-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 SMA5J28CA-E3/61 reliable?
The price and inventory of SMA5J28CA-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 SMA5J28CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J28CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J28CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J28CA-E3/61?
SMA5J28CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J28CA-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 SMA5J28CA-E3/61?
For technical support, including SMA5J28CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J28CA-E3/61 requirements.
6.How does Aetrix verify that SMA5J28CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J28CA-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 SMA5J28CA-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J28CA-E3/61?
All SMA5J28CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J28CA-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 SMA5J28CA-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J28CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J28CA-E3/61 Tags
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