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Vishay General Semiconductor - Diodes Division SMA5J30CAHE3/5A
- Part No.:
- SMA5J30CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30CAHE3/5A.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,010
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Product details
Overview
SMA5J30CAHE3/5A 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 30 V standoff voltage (VWM), 48.4 V clamping voltage (VC) at 10.3 A peak pulse current (IPPM), 500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and load dump transients.
For engineers reviewing the SMA5J30CAHE3/5A datasheet, SMA5J30CAHE3/5A pinout, SMA5J30CAHE3/5A application, or SMA5J30CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, 150 °C maximum junction temperature, RoHS-compliant AEC-Q101 qualification, low incremental surge resistance, 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 paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the low RθJL (25 °C/W) supports reliable thermal dissipation during repetitive surge events.
The device complies with ANSI/IEEE C62.35 for transient suppression and meets J-STD-020 MSL Level 1 (260 °C peak reflow). Its 30 V VWM and 33.3–36.8 V VBR range ensure robust immunity to normal operating voltages while triggering reliably during transients exceeding 48.4 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse working voltage before clamping begins; sets upper limit for safe operation in 24 V automotive or industrial bus systems. |
| VBR (min/max) | 33.3 V / 36.8 V - Breakdown voltage range at 1 mA test current; defines precise clamping onset threshold under standardized conditions. |
| VC @ IPPM | 48.4 V - Clamped voltage at 10.3 A peak pulse current (10/1000 µs); determines maximum stress imposed on protected downstream ICs. |
| PPPM | 500 W - Peak pulse power handling capability; enables survival of high-energy transients like ISO 7637-2 Pulse 5a (load dump). |
| TJ max. | 150 °C - Maximum junction temperature; allows operation in under-hood automotive environments and sealed industrial enclosures. |
| Package | SMA (DO-214AC) - Surface-mount package with 5.28 mm × 4.50 mm footprint and 2.29 mm height; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, no polarity marking (bidirectional), UL 94 V-0 rated, MSL Level 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping occurs regardless of voltage polarity across the device. |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides mechanical anchoring and contributes to thermal conduction via PCB copper pads (5.0 mm × 5.0 mm recommended per terminal). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., CAN FD, RS-485), and ungrounded sensor outputs without polarity constraints. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces per stress test requirements. |
| 500 W peak pulse power | Withstands ISO 7637-2 load dump pulses and IEC 61000-4-5 surge events up to 4 kV (line-to-ground) in properly designed layouts. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to protected ICs - critical for safeguarding 3.3 V or 5 V logic inputs in microcontrollers and transceivers. |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow soldering at 260 °C peak without preconditioning, reducing manufacturing complexity. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤48.4 V, preventing latch-up or gate oxide damage in 3.3 V ADC front-end circuitry while maintaining signal integrity at 30 V DC bias. |
Use Scenario: Guarding 24 V digital input channels on PLC modules against field-wiring induced surges and inductive kickback. IC Role / Device Role: Primary surge suppression element on each input line prior to optocoupler or level-shifter stage. Use Value: Absorbs 500 W transient energy without degradation, ensuring >100,000 surge cycles and eliminating need for secondary protection components. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Safeguarding RS-485 transceiver pins in outdoor network equipment subjected to lightning-induced surges on long cable runs. IC Role / Device Role: Common-mode TVS pair (two devices) across differential pair, referenced to ground. Use Value: Symmetrical clamping maintains differential signal fidelity while suppressing common-mode transients up to ±48.4 V relative to ground. |
Use Scenario: Secondary-side overvoltage protection on 5 V/9 V USB-C PD adapter outputs against feedback loop failure or Zener regulator drift. IC Role / Device Role: Last-line defense shunt device parallel to output capacitor, triggered only during fault conditions. Use Value: Fast <1 ns response prevents >5.5 V excursion on connected devices, meeting USB-IF voltage tolerance limits during abnormal regulation loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J30CA-M3/5A | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification; same SMA package and thermal performance. | No functional difference; selected when halogen-free material compliance is required by OEM or regional regulations (e.g., EU ELV Directive). | Choose SMA5J30CA-M3/5A if halogen-free bill-of-materials is mandated; otherwise SMA5J30CAHE3/5A offers full AEC-Q101 traceability with standard RoHS compliance. |
| SMCJ30CAHE3/5A | Same VWM/VC ratings but in larger SMC (DO-214AB) package; higher thermal mass (RθJA = 35 °C/W vs. 80 °C/W); 1500 W PPPM. | Used where higher surge endurance (>1000 surges) or board-level heat spreading is needed; requires larger PCB area (7.11 mm × 6.22 mm vs. 5.28 mm × 4.50 mm). | Choose SMCJ30CAHE3/5A only when system-level surge testing exceeds 500 W single-event limits or when ambient temperature derating demands lower thermal resistance. |
Compared with SMA5J30CAHE3/5A, the SMA5J30CA-M3/5A delivers identical protection performance with halogen-free materials, while the SMCJ30CAHE3/5A trades compact size for higher surge capacity and better thermal handling - making SMA5J30CAHE3/5A optimal for space-constrained automotive and industrial PCBs requiring certified AEC-Q101 reliability.
Availability
SMA5J30CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interface boards, and consumer power adapter designs requiring stable component supply with full AEC-Q101 qualification and RoHS compliance.
Supply support for SMA5J30CAHE3/5A 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-grade qualification.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where compact size and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the SMA5J30CAHE3/5A under a 10/1000 µs surge?
The SMA5J30CAHE3/5A clamps to a maximum of 48.4 V when subjected to its rated peak pulse current of 10.3 A using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C with devices mounted on 5.0 mm × 5.0 mm copper pads per terminal, and represents the upper voltage limit imposed on protected circuitry during surge events.
Is the SMA5J30CAHE3/5A suitable for automotive applications?
Yes, the SMA5J30CAHE3/5A is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge endurance - making it appropriate for engine control units, body control modules, and ADAS sensor interfaces where reliability under extreme conditions is essential.
Does the SMA5J30CAHE3/5A have polarity markings on the package?
No, the SMA5J30CAHE3/5A does not feature polarity markings because it is a bidirectional TVS diode. The SMA (DO-214AC) package has no anode or cathode designation - both terminals are functionally identical, allowing installation in either orientation on the PCB without affecting clamping performance.
What is the maximum junction temperature rating for the SMA5J30CAHE3/5A?
The SMA5J30CAHE3/5A has a maximum junction temperature (TJ) rating of +150 °C. This enables continuous operation in high-ambient environments such as under-hood automotive locations or sealed industrial enclosures, and supports reliable performance during repeated surge events when mounted with recommended PCB copper thermal pads.
How does the SMA5J30CAHE3/5A differ from unidirectional variants like SMA5J30AHE3/5A?
The SMA5J30CAHE3/5A is bidirectional and clamps symmetrically for both positive and negative transients, whereas SMA5J30AHE3/5A is unidirectional and conducts only during reverse-bias overvoltage. The "CA" suffix indicates bidirectional functionality, making SMA5J30CAHE3/5A suitable for AC-coupled lines, differential buses, and floating grounds where polarity cannot be guaranteed.
SMA5J30CAHE3/5A 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMA5J30CAHE3/5A FAQ
1.How can I place an order for SMA5J30CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30CAHE3/5A 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 SMA5J30CAHE3/5A reliable?
The price and inventory of SMA5J30CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J30CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J30CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30CAHE3/5A?
SMA5J30CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30CAHE3/5A 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 SMA5J30CAHE3/5A?
For technical support, including SMA5J30CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30CAHE3/5A requirements.
6.How does Aetrix verify that SMA5J30CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J30CAHE3/5A 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 SMA5J30CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J30CAHE3/5A?
All SMA5J30CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30CAHE3/5A, 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 SMA5J30CAHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J30CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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