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Vishay General Semiconductor - Diodes Division SMA5J28C-E3/61
- Part No.:
- SMA5J28C-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J28C-E3/61.pdf
- Description:
- TVS DIODE 28VWM 50VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,353
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Product details
Overview
SMA5J28C-E3/61 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on signal and power lines. It features a 28 V stand-off voltage (VWM), 31.1–34.4 V breakdown voltage (VBR), 500 W peak pulse power (PPPM), and 11.0 A peak pulse current (IPPM) at 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMA5J28C-E3/61 datasheet, SMA5J28C-E3/61 pinout, SMA5J28C-E3/61 application, or SMA5J28C-E3/61 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, 150 °C junction temperature rating, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with clamping voltage (VC) of 45.4 V at IPPM and reverse leakage current ≤1.0 µA at VWM. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), critical for suppressing ESD and inductive switching spikes.
Thermal performance is defined by RθJA = 80 °C/W and RθJL = 25 °C/W, supporting reliable operation under repetitive surge conditions when mounted per recommended pad layout. The device meets MSL Level 1 (260 °C reflow peak) and JESD201 Class 1A whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 31.1 V / 34.4 V - guaranteed breakdown range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 45.4 V - clamped voltage during 11.0 A 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 500 W - peak transient power handling capacity under standardized waveform |
| ID @ VWM | ≤1.0 µA - ultra-low leakage ensures minimal standby power loss and signal integrity |
| TJ max. | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded plastic case meeting UL 94 V-0, matte tin-plated leads solderable per J-STD-002/JESD22-B102, no polarity marking for bi-directional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between terminals; either terminal serves as anode or cathode depending on transient polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal and electrical stress |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulses) |
| MSL Level 1 compliance | Enables single-reflow assembly without moisture sensitivity concerns |
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 load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤45.4 V, preventing damage to 3.3 V/5 V tolerant receivers while maintaining signal fidelity due to low capacitance. | Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 24 V DC input channels, absorbing energy from inductive loads. Use Value: Withstands 500 W surges and operates up to +150 °C ambient, ensuring uptime in factory-floor control cabinets. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters subjected to lightning-induced surges on DC output rails. IC Role / Device Role / Timing Role: Clamp device across regulated 12 V or 19 V output, triggered only during abnormal overvoltage events. Use Value: Fast response (<1 ns) and low leakage (≤1.0 µA) prevent false triggering and standby power waste. | Use Scenario: Protecting Ethernet PHYs and DSL line drivers from induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Bi-directional TVS placed differentially across data pairs to suppress common-mode transients. Use Value: Symmetrical clamping ensures balanced suppression without skewing differential signaling integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J28CAHE3/61 | AEC-Q101 qualified version with HE3 suffix; identical electrical specs but enhanced whisker resistance (JESD201 Class 2) | Required for automotive safety-critical modules where extended whisker reliability is mandated | Select SMA5J28CAHE3/61 when AEC-Q101 compliance is contractually required beyond standard commercial qualification |
| SMC5J28C-E3/5A | Larger DO-214AB (SMC) package; same VWM/VBR/PPPM but higher thermal mass and RθJA = 35 °C/W | Better suited for high-repetition-rate surges or higher ambient temperatures where SMA thermal limits are exceeded | Choose SMC5J28C-E3/5A when board space allows and thermal derating margin is insufficient with SMA footprint |
Compared with SMA5J28C-E3/61, the HE3 variant adds whisker-test assurance for automotive deployment, while the SMC variant trades smaller footprint for superior thermal dissipation - both retain identical clamping performance but address distinct mechanical and qualification constraints.
Availability
SMA5J28C-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and consumer power adapter designs requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 traceability.
Supply support for SMA5J28C-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 passive components with emphasis on high-reliability and automotive-grade solutions.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in space-constrained, high-surge environments such as automotive electronics and industrial controls.
FAQ
What is the polarity configuration of SMA5J28C-E3/61?
The SMA5J28C-E3/61 is a bi-directional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike uni-directional variants (e.g., SMA5J28A), it has no cathode band marking and functions identically regardless of terminal orientation - essential for protecting AC-coupled or differential signal paths where polarity is undefined.
Does SMA5J28C-E3/61 meet AEC-Q101 requirements?
No - SMA5J28C-E3/61 carries the E3 suffix, indicating RoHS-compliant commercial grade qualification. For AEC-Q101 compliance, the correct part is SMA5J28CAHE3/61 (HE3 suffix). The "C" in SMA5J28C-E3/61 denotes bi-directionality only; qualification status is determined solely by the suffix (E3 vs. HE3).
What is the maximum clamping voltage for SMA5J28C-E3/61 under surge conditions?
The maximum clamping voltage (VC) for SMA5J28C-E3/61 is 45.4 V, measured at the peak pulse current (IPPM) of 11.0 A under the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is guaranteed across the full operating temperature range.
Can SMA5J28C-E3/61 be used in place of SMA5J28A?
SMA5J28C-E3/61 and SMA5J28A share identical VWM (28 V), VBR (31.1–34.4 V), and PPPM (500 W), but differ fundamentally in polarity: SMA5J28A is uni-directional (cathode-marked), while SMA5J28C-E3/61 is bi-directional (unmarked). Substitution is only valid if the circuit requires symmetrical clamping - e.g., across AC lines or differential pairs - and no DC bias exists that would forward-bias one direction.
What PCB pad layout is recommended for optimal thermal performance of SMA5J28C-E3/61?
Vishay specifies mounting SMA5J28C-E3/61 on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated PPPM and thermal resistance (RθJA = 80 °C/W). Reducing pad size or using thinner copper will increase junction temperature and require derating per Figure 2 in the datasheet - critical for sustained surge duty cycles in industrial applications.
SMA5J28C-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 10A
- 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)
SMA5J28C-E3/61 FAQ
1.How can I place an order for SMA5J28C-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J28C-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 SMA5J28C-E3/61 reliable?
The price and inventory of SMA5J28C-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 SMA5J28C-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J28C-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J28C-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J28C-E3/61?
SMA5J28C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J28C-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 SMA5J28C-E3/61?
For technical support, including SMA5J28C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J28C-E3/61 requirements.
6.How does Aetrix verify that SMA5J28C-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J28C-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 SMA5J28C-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J28C-E3/61?
All SMA5J28C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J28C-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 SMA5J28C-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J28C-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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