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Vishay General Semiconductor - Diodes Division SMA5J28CAHE3/61
- Part No.:
- SMA5J28CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J28CAHE3/61.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,767
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Product details
Overview
SMA5J28CAHE3/61 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 stand-off voltage (VWM), 31.1–34.4 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 µs), clamping voltage of 45.4 V at 11.0 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMA5J28CAHE3/61 datasheet, SMA5J28CAHE3/61 pinout, SMA5J28CAHE3/61 application, or SMA5J28CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.62), MSL Level 1 moisture sensitivity, and RoHS-compliant AEC-Q101 qualified construction suitable for automotive ECUs and industrial sensor interfaces.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with no polarity marking and identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while low incremental surge resistance enables effective energy diversion during ESD or lightning-induced transients.
The device is rated for 150 °C maximum junction temperature and uses a thermally optimized SMA (DO-214AC) package with 25 °C/W junction-to-lead thermal resistance. It meets JESD201 Class 2 whisker resistance and is qualified to AEC-Q101 for automotive under-hood and infotainment applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 31.1 V / 34.4 V at 1 mA - Confirmed breakdown threshold range ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 45.4 V at 11.0 A - Clamped voltage during 500 W surge; limits stress on downstream ICs like CAN transceivers or microcontrollers. |
| PPPM | 500 W (10/1000 µs waveform) - Peak surge power handling capacity; supports IEC 61000-4-5 Level 4 compliance when properly laid out. |
| ID @ VWM | 1.0 µA - Ultra-low leakage current preserves battery life in always-on automotive modules and sensor nodes. |
| TJ max | 150 °C - Enables reliable operation in under-hood environments and industrial enclosures without derating below 125 °C ambient. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Case meets UL 94 V-0; matte tin-plated leads solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping allows placement without orientation concern on PCB. |
| Case (cathode band absent) | Thermal and mechanical interface | No cathode band marking; terminals are electrically interchangeable-no functional distinction between pins. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN FD differential pairs) without polarity constraints. |
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control units, ADAS camera links, and body electronics exposed to load dump and ISO 7637-2 pulses. |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes voltage overshoot during surge events, reducing risk of latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. |
| MSL Level 1 (260 °C peak) | Eliminates pre-bake requirement for reflow assembly, supporting standard lead-free SMT processes without moisture-related popcorning. |
Applications
| Automotive CAN Bus Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting high-speed CAN FD transceivers in vehicle domain controllers against load dump, jump-start transients, and ISO 7637-2 pulse 5a. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across CAN_H/CAN_L differential pair to limit common-mode surge voltage to <46 V. Use Value: Prevents transceiver latch-up and bus lockup during 12 V system surges up to 500 W, maintaining communication integrity without added series impedance. | Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs against ESD (IEC 61000-4-2 ±15 kV) and surge (IEC 61000-4-5 2 kV line-earth). IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS mounted at connector entry point to shunt transients before reaching transceiver inputs. Use Value: Maintains signal integrity at 10 Mbps by limiting clamping voltage to 45.4 V while adding <0.5 pF parasitic capacitance at VWM. |
| Consumer USB-C Port Protection | Telecom DSL Line Interface |
Use Scenario: Secondary-level surge suppression on USB-C CC and VCONN lines in docking stations subjected to hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response TVS placed after primary ESD array to handle higher-energy secondary transients exceeding 8 kV contact discharge. Use Value: Clamps 11 A surge within 1 ns, preventing damage to USB PD controllers while meeting USB-IF ESD immunity requirements. | Use Scenario: Overvoltage protection on twisted-pair DSL lines exposed to lightning-induced surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Primary surge diverter across tip/ring conductors, coordinated with gas discharge tube (GDT) front-end for multi-stage protection. Use Value: Handles 500 W surge energy without degradation, enabling >100,000 surge cycles in telco-grade equipment per GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J28CA-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification; same thermal and surge performance. | No functional difference; selected where halogen-free material compliance is mandated by OEM or regional environmental regulations. | Choose SMA5J28CA-M3/61 when halogen-free bill-of-materials is required; otherwise SMA5J28CAHE3/61 offers full AEC-Q101 traceability with commercial-grade cost structure. |
| SMCJ28CAHE3/61 | Higher power rating (1500 W), larger SMC (DO-214AB) package; 28 V VWM, 31.1–34.4 V VBR, 45.4 V VC; same bidirectional AEC-Q101 qualification. | Used where higher surge margin is needed (e.g., 48 V industrial buses or railway applications); requires larger PCB footprint and different pad layout. | Select SMCJ28CAHE3/61 only when 500 W is insufficient-e.g., for IEC 61000-4-5 Level 5 testing-or when existing SMC footprint is standardized across platform designs. |
Compared with SMA5J28CAHE3/61, SMA5J28CA-M3/61 provides identical protection performance with halogen-free materials, while SMCJ28CAHE3/61 delivers triple the surge power in a larger package-making SMA5J28CAHE3/61 the optimal balance of AEC-Q101 reliability, 500 W capability, and compact SMA footprint for space-constrained automotive and industrial PCBs.
Availability
SMA5J28CAHE3/61 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial fieldbus interfaces, and telecom line card designs requiring stable component supply with AEC-Q101 qualification and RoHS compliance.
Supply support for SMA5J28CAHE3/61 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, power density, and automotive-grade qualification.
The SMA5JxxCA family is engineered specifically for high-power-density transient suppression in automotive and industrial systems, delivering robust 500 W surge handling in the compact SMA package while meeting stringent AEC-Q101 and JESD201 requirements.
FAQ
What is the polarity configuration of SMA5J28CAHE3/61?
SMA5J28CAHE3/61 is a bidirectional TVS diode with symmetrical anode/cathode terminals and no polarity marking. Unlike unidirectional variants (e.g., SMA5J28A), it clamps voltage transients equally in both directions-ideal for protecting AC-coupled or floating differential interfaces such as CAN, RS-485, or Ethernet PHY lines without orientation concerns during placement.
Does SMA5J28CAHE3/61 meet AEC-Q101 requirements?
Yes, SMA5J28CAHE3/61 is fully AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88875 (Revision 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD-making SMA5J28CAHE3/61 suitable for automotive powertrain, chassis, and infotainment applications where reliability under harsh conditions is mandatory.
What is the clamping voltage of SMA5J28CAHE3/61 at its rated surge current?
The clamping voltage (VC) of SMA5J28CAHE3/61 is 45.4 V at 11.0 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This value reflects actual device behavior during surge events and ensures protected circuits-such as 3.3 V or 5 V microcontrollers-remain below absolute maximum ratings even under full 500 W surge conditions.
Can SMA5J28CAHE3/61 be used in place of a unidirectional TVS like SMA5J28A?
No-SMA5J28CAHE3/61 is strictly bidirectional and cannot replace unidirectional types like SMA5J28A in DC-biased circuits (e.g., 12 V power rail protection), where forward conduction must be blocked. Substitution would cause unintended conduction during normal operation. Always verify circuit topology: use SMA5J28CAHE3/61 only for AC, differential, or floating node protection where symmetrical clamping is required.
What is the maximum junction temperature rating for SMA5J28CAHE3/61?
The maximum junction temperature (TJmax) for SMA5J28CAHE3/61 is +150 °C, as specified in the Absolute Maximum Ratings table of Vishay datasheet 88875. This rating enables reliable operation in under-hood automotive environments and sealed industrial enclosures, provided PCB thermal design maintains junction-to-ambient temperature rise within limits using the documented RθJA = 80 °C/W and RθJL = 25 °C/W values.
SMA5J28CAHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J28CAHE3/61 FAQ
1.How can I place an order for SMA5J28CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J28CAHE3/61 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 SMA5J28CAHE3/61 reliable?
The price and inventory of SMA5J28CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J28CAHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J28CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J28CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J28CAHE3/61?
SMA5J28CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J28CAHE3/61 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 SMA5J28CAHE3/61?
For technical support, including SMA5J28CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J28CAHE3/61 requirements.
6.How does Aetrix verify that SMA5J28CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J28CAHE3/61 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 SMA5J28CAHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J28CAHE3/61?
All SMA5J28CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J28CAHE3/61, 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 SMA5J28CAHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J28CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J28CAHE3/61 Tags
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