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Vishay General Semiconductor - Diodes Division SMA5J30CAHE3_A/H
- Part No.:
- SMA5J30CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30CAHE3_A/H.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,285
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Product details
Overview
SMA5J30CAHE3_A/H 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 stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage at 10.3 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform. Used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics against inductive switching transients.
For engineers reviewing the SMA5J30CAHE3_A/H datasheet, SMA5J30CAHE3_A/H pinout, SMA5J30CAHE3_A/H application, or SMA5J30CAHE3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 80 °C/W), clamping performance under standardized surge waveforms, and direct alternative part comparisons for robust circuit protection design.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with no polarity marking and identical VBR, ID, and VC characteristics in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and low leakage (≤1.0 μA at VWM), while the low incremental surge resistance enables tight clamping during fast transients.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. It is AEC-Q101 qualified (indicated by HE3 suffix), making it suitable for automotive powertrain and body electronics where reliability under thermal cycling and surge stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR min/max | 33.3 V / 36.8 V - Measured at 1 mA test current; guarantees reliable turn-on within defined tolerance band for predictable surge response. |
| VC @ IPPM | 48.4 V at 10.3 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on protected downstream components. |
| PPPM | 500 W - Peak pulse power handling capability; supports high-energy transients such as ISO 7637-2 Pulse 5a without failure. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB layout requirements for thermal management. |
| TJ max | +150 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Matte tin-plated leads, RoHS-compliant, halogen-free option available (HM3), MSL Level 1, 260 °C peak reflow.
| 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 | DO-214AC molded case provides mechanical stability and contributes to thermal dissipation via PCB copper pad contact. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns or external circuitry. |
| 500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV line-to-line) and ISO 7637-2 Pulse 5a (75 V/300 ms) surge immunity testing. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units, ADAS sensors, and body control modules. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs-critical for 3.3 V or 5 V logic interfaces with narrow voltage margins. |
| MSL Level 1 rating | Permits standard SMT assembly without dry-pack or baking, reducing manufacturing cost and complexity. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting LIN bus or 12 V supply rails in vehicle door modules against load dump and alternator ripple. IC Role / Device Role: Bidirectional TVS placed between power rail and ground to clamp positive and negative transients. Use Value: Withstands repetitive 500 W surges and maintains <1.0 μA leakage at 30 V, preserving battery drain budgets in always-on systems. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors in PLC I/O modules from ESD and field wiring transients. IC Role / Device Role: Low-capacitance TVS across differential signal pair to suppress common-mode surges without distorting signal integrity. Use Value: 48.4 V clamping voltage ensures protected op-amps remain within absolute maximum ratings even during 10.3 A surge events. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
|
Use Scenario: Safeguarding USB 2.0 data lines (D+/D−) in set-top boxes against human-body-model (HBM) ESD up to ±15 kV. IC Role / Device Role: Bidirectional TVS placed across differential pair to shunt ESD energy before reaching USB transceiver. Use Value: Fast response time and symmetrical clamping prevent data corruption while maintaining signal rise/fall times under normal operation. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers against lightning-induced surges on outdoor telecom lines. IC Role / Device Role: Primary surge limiter mounted at line entry point, upstream of isolation transformers and line drivers. Use Value: 500 W PPPM rating and 30 V VWM align with GR-1089-CORE Level 3 surge requirements for central office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J30CAHM3_A/H | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected when halogen-free compliance is mandated by OEM environmental policy. | Drop-in replacement for SMA5J30CAHE3_A/H where material content restrictions apply. |
| SMB5J30CAHE3_A/H | Same VWM/VBR/VC ratings but in larger SMB (DO-214AA) package with higher RθJA (60 °C/W vs. 80 °C/W) and 600 W PPPM. | Better thermal performance and surge margin; requires larger PCB footprint and different pad layout. | Preferred when higher surge endurance or improved thermal derating is required, especially in high-temperature enclosures. |
Compared with SMA5J30CAHE3_A/H, SMA5J30CAHM3_A/H offers identical protection performance with halogen-free construction, while SMB5J30CAHE3_A/H delivers 20 % higher peak power and lower thermal resistance at the cost of increased board area-enabling trade-offs between footprint efficiency and ruggedness.
Availability
SMA5J30CAHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer USB peripherals, and telecom line cards requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SMA5J30CAHE3_A/H 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 application-specific qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial designs, combining AEC-Q101 validation, low-profile packaging, and repeatable clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of SMA5J30CAHE3_A/H at its rated peak pulse current?
The SMA5J30CAHE3_A/H has a maximum clamping voltage (VC) of 48.4 V when subjected to its specified peak pulse current (IPPM) of 10.3 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 48.4 V during surge events, which is critical for protecting 3.3 V or 5 V logic interfaces. The clamping performance is guaranteed across the full operating temperature range of -55 °C to +150 °C.
Is SMA5J30CAHE3_A/H suitable for automotive applications?
Yes, SMA5J30CAHE3_A/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 88875 datasheet. It undergoes rigorous stress testing-including temperature cycling, high-temperature reverse bias, and surge endurance-to meet automotive reliability standards. Its 150 °C maximum junction temperature and MSL Level 1 rating make it appropriate for engine control units, body electronics, and ADAS sensor modules where long-term stability under thermal and electrical stress is mandatory.
How does the bidirectional configuration of SMA5J30CAHE3_A/H affect its use in circuit design?
The bidirectional configuration of SMA5J30CAHE3_A/H means it clamps voltage transients equally in both polarities, eliminating the need for polarity awareness during placement or additional components like series diodes. This simplifies layout for AC-coupled lines, differential buses (e.g., CAN, LIN), or floating grounds. Unlike unidirectional TVS diodes, SMA5J30CAHE3_A/H has no cathode band marking and delivers matched VBR and VC in either direction-ensuring consistent protection without circuit redesign.
What is the thermal resistance of SMA5J30CAHE3_A/H, and how does it impact PCB layout?
SMA5J30CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test conditions and directly impacts minimum copper area requirements: reducing pad size or omitting thermal vias increases junction temperature during repeated surges. For sustained high-duty-cycle applications, designers should add thermal vias under the pads and extend copper pours to maintain TJ ≤ 150 °C under worst-case ambient conditions.
Does SMA5J30CAHE3_A/H meet RoHS and halogen-free requirements?
SMA5J30CAHE3_A/H is RoHS-compliant per EU Directive 2011/65/EU, as indicated by the "E3" suffix and documented in Vishay's material declarations. It is not halogen-free; that designation applies only to variants with "HM3" suffix (e.g., SMA5J30CAHM3_A/H). Both versions meet JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards. Full compliance documentation, including substance thresholds and test reports, is available through Vishay's official material database.
SMA5J30CAHE3_A/H 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):
- 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_A/H FAQ
1.How can I place an order for SMA5J30CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30CAHE3_A/H 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_A/H reliable?
The price and inventory of SMA5J30CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J30CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J30CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30CAHE3_A/H?
SMA5J30CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30CAHE3_A/H 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_A/H?
For technical support, including SMA5J30CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30CAHE3_A/H requirements.
6.How does Aetrix verify that SMA5J30CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J30CAHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J30CAHE3_A/H?
All SMA5J30CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30CAHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for SMA5J30CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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