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Vishay General Semiconductor - Diodes Division SMA5J30CAHM3_A/H
- Part No.:
- SMA5J30CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30CAHM3_A/H.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,890
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Product details
Overview
SMA5J30CAHM3_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 standoff 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. It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications.
For engineers reviewing the SMA5J30CAHM3_A/H datasheet, SMA5J30CAHM3_A/H pinout, SMA5J30CAHM3_A/H application, or SMA5J30CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on PCBs requiring robust ESD and lightning surge immunity.
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 characteristics and fast response time (<1 ns) to transients induced by inductive switching or ESD events.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature, with thermal resistance RθJA = 80 °C/W (typ.) and RθJL = 25 °C/W (typ.), supporting reliable performance under sustained surge stress when mounted per recommended 5.0 mm × 5.0 mm copper pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - Maximum continuous reverse voltage before clamping begins; defines operating margin for protected circuitry. |
| VBR (Breakdown Voltage) | 33.3–36.8 V at 1 mA - Voltage at which device enters avalanche conduction; tight tolerance enables predictable turn-on behavior. |
| VC (Clamping Voltage) | 48.4 V at IPPM = 10.3 A - Peak voltage seen by downstream components during 500 W surge; critical for IC-level overvoltage margining. |
| PPPM (Peak Pulse Power) | 500 W (10/1000 μs) - Energy-handling capacity for standardized lightning/surge waveforms; validates suitability for IEC 61000-4-5 Level 3/4. |
| Package | SMA (DO-214AC) - Surface-mount package with 2.54 mm lead pitch; supports automated assembly and meets UL 94 V-0 flammability. |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
Pinout & Package
SMA (DO-214AC) package: surface-mount, two-terminal, unmarked bidirectional device - no polarity band; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals function identically; bidirectional conduction allows placement across any two points needing clamping regardless of DC bias direction. |
| Case (body) | Thermal and mechanical interface | No electrical connection; thermally coupled to PCB copper pads (min. 5.0 mm × 5.0 mm per terminal) to dissipate surge energy. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485, CAN), or floating power rails without polarity constraints. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV), improving clamping precision beyond VC spec. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at peak 260 °C without baking - eliminates moisture-related popcorning risk in high-volume SMT lines. |
| Halogen-free & RoHS-compliant | Meets IPC-1752A material declaration requirements and automotive OEM environmental mandates (e.g., GMW3172, Ford WSS-M99P9999-A1). |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting wheel speed, pressure, or temperature sensor outputs in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor signal line and ground to clamp ±50 V transients while preserving analog integrity. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADCs; validated for AEC-Q101 ensures field reliability over 15-year vehicle lifetime. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) in factory automation PLCs subjected to cable-induced surges. IC Role / Device Role / Timing Role: Placed across A/B differential pair to suppress common-mode surges up to 1 kV (IEC 61000-4-5) without distorting data eye. Use Value: Maintains signal integrity below 25 Mbps; 48.4 V clamping ensures transceiver remains within absolute maximum ratings during 500 W surge events. |
| Consumer USB-C Port Protection | Telecom DSL Line Interface |
|
Use Scenario: Shielding USB-C CC and VBUS lines in portable chargers against ESD (IEC 61000-4-2 ±15 kV contact) and hot-plug voltage spikes. IC Role / Device Role / Timing Role: Bidirectional suppression on CC line and unidirectional variant on VBUS; SMA5J30CAHM3_A/H used for CC line symmetry. Use Value: Sub-1 ns response prevents ESD-induced logic upset in USB PD controllers; low capacitance (<100 pF at 0 V) avoids signal degradation at 5 Gbps. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers in residential gateways exposed to lightning-induced longitudinal surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Connected between tip/ring and ground to clamp mode-converted surges exceeding 1 kV without disrupting 30 MHz DSL bandwidth. Use Value: 500 W PPPM rating sustains multiple surge events per ITU-T K.20/K.21; DO-214AC footprint allows compact dual-line protection layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J30CAHE3_A/H | Same electrical specs and package; RoHS-compliant but not halogen-free; uses standard matte tin plating (no halogen-free molding compound). | Approved for commercial/industrial use; not certified for automotive AEC-Q101 applications requiring halogen-free compliance. | Select SMA5J30CAHE3_A/H only if halogen-free requirement is waived and cost optimization is prioritized. |
| SMBJ30CA | Same VWM/VBR/VC ratings but in larger SMB (DO-214AA) package; higher thermal mass (RθJA = 65 °C/W); 600 W PPPM rating. | Better suited for higher average surge duty cycles or elevated ambient temperatures (>85 °C); requires larger PCB area. | Choose SMBJ30CA where board space permits and thermal derating headroom is needed beyond SMA5J30CAHM3_A/H's 500 W limit. |
Compared with SMA5J30CAHE3_A/H, the SMA5J30CAHM3_A/H adds halogen-free qualification for automotive Tier 1 supply chains; compared with SMBJ30CA, it trades 100 W peak power and thermal margin for 30% smaller footprint and AEC-Q101 alignment - ideal for space-constrained automotive modules.
Availability
SMA5J30CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and consumer USB-C port protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMA5J30CAHM3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The SMA5J series is engineered for high-power-density transient suppression in automotive, industrial, and telecom systems where compact size, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the SMA5J30CAHM3_A/H at its rated peak pulse current?
The SMA5J30CAHM3_A/H has a maximum clamping voltage (VC) of 48.4 V at its specified peak pulse current (IPPM) of 10.3 A, measured under the standard 10/1000 μs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J30CAHM3_A/H maintains this clamping performance consistently due to its glass-passivated junction and low dynamic impedance.
Is the SMA5J30CAHM3_A/H suitable for automotive applications?
Yes, the SMA5J30CAHM3_A/H is explicitly qualified to AEC-Q101 for automotive use, with test evidence covering HTOL, temperature cycling, HTRB, and ESD per JESD22 standards. Its halogen-free, RoHS-compliant construction and MSL Level 1 rating meet Tier 1 supplier requirements for engine control units, ADAS sensors, and infotainment systems. The SMA5J30CAHM3_A/H is designated for automotive ordering via the HM3 suffix and revision code "A/H".
How does the bidirectional design of the SMA5J30CAHM3_A/H affect its placement on a PCB?
The SMA5J30CAHM3_A/H has no polarity marking and functions identically in both directions, so it can be placed across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs (CAN, RS-485) or AC-coupled lines - without orientation constraints. This simplifies layout, eliminates assembly errors, and avoids the need for separate unidirectional devices on bidirectional paths. The SMA5J30CAHM3_A/H's DO-214AC package supports standard 0.2" x 0.2" copper pad footprints per terminal.
What is the maximum operating junction temperature for the SMA5J30CAHM3_A/H?
The SMA5J30CAHM3_A/H has a maximum operating junction temperature (TJ) of +150 °C and a storage temperature range of –55 °C to +150 °C. This rating is validated under steady-state and pulsed thermal conditions, with typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on the recommended 5.0 mm × 5.0 mm copper pads. Derating curves in the datasheet confirm usable surge capacity down to TJ = 125 °C for continuous operation.
Does the SMA5J30CAHM3_A/H require special handling or baking before reflow soldering?
No, the SMA5J30CAHM3_A/H is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be reflowed at peak temperatures up to 260 °C without prior baking. Its moisture-sensitive level classification eliminates moisture-related defects like popcorning during lead-free reflow. The SMA5J30CAHM3_A/H's halogen-free epoxy molding compound and matte tin terminations are fully compatible with standard J-STD-002 solderability requirements.
SMA5J30CAHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J30CAHM3_A/H FAQ
1.How can I place an order for SMA5J30CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30CAHM3_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 SMA5J30CAHM3_A/H reliable?
The price and inventory of SMA5J30CAHM3_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 SMA5J30CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J30CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30CAHM3_A/H?
SMA5J30CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30CAHM3_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 SMA5J30CAHM3_A/H?
For technical support, including SMA5J30CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30CAHM3_A/H requirements.
6.How does Aetrix verify that SMA5J30CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J30CAHM3_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 SMA5J30CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J30CAHM3_A/H?
All SMA5J30CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30CAHM3_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 SMA5J30CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMA5J30CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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