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Vishay General Semiconductor - Diodes Division SMA5J30AHE3/5A
- Part No.:
- SMA5J30AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30AHE3/5A.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,068
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Product details
Overview
SMA5J30AHE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal 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 safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J30AHE3/5A datasheet, SMA5J30AHE3/5A pinout, SMA5J30AHE3/5A application, or SMA5J30AHE3/5A equivalent, key selection criteria include clamping performance under 10.3 A surge, AEC-Q101 qualification status, thermal resistance (RθJA = 80 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated silicon junction technology for stable breakdown and low incremental surge resistance. Its response time is sub-nanosecond, enabling effective suppression of ESD and inductive switching transients.
Rated for -55 °C to +150 °C junction temperature range and qualified to AEC-Q101, the SMA5J30AHE3/5A supports automotive-grade reliability. It is mounted on minimum recommended pad layout per JEDEC MS-012, with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 24 V DC systems. |
| VBR min/max | 33.3 V / 36.8 V at 1 mA - verified breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 48.4 V at 10.3 A - clamping voltage limits downstream component stress during 500 W transient surges. |
| PPPM | 500 W (10/1000 µs) - peak surge energy handling capacity suitable for ISO 7637-2 Pulse 1/2a/5a compliance testing. |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial power converters. |
| RθJA | 80 °C/W - thermal resistance determines required PCB copper area for sustained surge duty cycles. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with molded UL 94 V-0 compound; cathode identified by black band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side return path. | Provides reference node for clamping action; must be routed with low-inductance trace to minimize voltage overshoot. |
| Cathode | Current exit terminal in forward bias; marked with black band; connected to line being protected. | Defines polarity-sensitive placement; incorrect orientation disables protection and risks catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power rails. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current across temperature and humidity stress. |
| MSL Level 1 (260 °C) | Enables single-reflow assembly without moisture sensitivity concerns or baking requirements. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (< 1 ns), critical for protecting sensitive gate drivers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in body control modules against load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC input stage. Use Value: Limits voltage to ≤48.4 V during 10.3 A surges, preventing damage to upstream regulators and microcontrollers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and field wiring faults. IC Role / Device Role / Timing Role: Line-to-ground TVS on sensor transmitter outputs in factory automation PLC I/O modules. Use Value: Sub-ns response clamps transients before they propagate into precision op-amp or ADC front-ends. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Protection |
Use Scenario: Safeguarding PoE-powered equipment inputs from induced surges on Ethernet cabling and auxiliary DC feeds. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48 V DC input before isolation and regulation stages. Use Value: Withstands repeated 500 W pulses while maintaining <1 μA leakage at 30 V, preserving standby efficiency. |
Use Scenario: Secondary-side surge suppression on 12 V/19 V outputs of laptop AC adapters exposed to mains coupling. IC Role / Device Role / Timing Role: Final-stage TVS between SMPS output and connector, guarding against hot-plug and cable discharge events. Use Value: 30 V VWM aligns with nominal output tolerances; 48.4 V VC avoids triggering downstream OVP circuits prematurely. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J30A-E3/5A | No AEC-Q101 qualification; commercial grade only; identical electrical specs and package. | Not approved for automotive use; suitable for consumer/industrial designs without automotive certification requirements. | Select when AEC-Q101 is not mandated and cost optimization is prioritized. |
| SMCJ30AHE3/5A | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM/VBR/VC ratings. | Used where higher surge margin is needed and board space allows larger footprint; not drop-in compatible due to different pad layout. | Choose when system-level surge test levels exceed 500 W and thermal mass requirements justify larger case size. |
Compared with SMA5J30AHE3/5A, the SMA5J30A-E3/5A offers identical protection performance without automotive qualification, while the SMCJ30AHE3/5A delivers triple the surge power rating in a physically incompatible package - requiring PCB redesign but enabling higher-reliability deployments in harsh environments.
Availability
SMA5J30AHE3/5A is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface protection, and telecom DC input hardening requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMA5J30AHE3/5A 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, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained SMT applications, targeting automotive, industrial, and telecom systems where robustness against ISO 7637-2 and IEC 61000-4-5 threats is mandatory.
FAQ
What is the clamping voltage of the SMA5J30AHE3/5A at its rated peak pulse current?
The SMA5J30AHE3/5A has a maximum clamping voltage (VC) of 48.4 V at 10.3 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per standard test methods defined in ANSI/IEEE C62.35 and ensures predictable voltage limiting during surge events. The SMA5J30AHE3/5A maintains this clamping performance across its specified operating temperature range.
Is the SMA5J30AHE3/5A qualified for automotive applications?
Yes, the SMA5J30AHE3/5A is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified variants. This qualification covers stress tests including temperature cycling, HTRB, and surge endurance, making the SMA5J30AHE3/5A suitable for under-hood and chassis-mounted automotive electronics.
What does the "5A" suffix mean in SMA5J30AHE3/5A?
The "5A" suffix in SMA5J30AHE3/5A indicates the preferred packaging format: 7500 units per 13-inch diameter plastic tape and reel. This differs from "61", which denotes 1800 units per 7-inch reel. Both formats use the same device die and meet identical electrical and reliability specifications - the suffix reflects logistics and assembly-line compatibility only.
How does the SMA5J30AHE3/5A differ from bidirectional versions like SMA5J30CA?
The SMA5J30AHE3/5A is unidirectional and features a cathode band for polarity-sensitive placement; it conducts only in reverse breakdown. In contrast, SMA5J30CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The SMA5J30AHE3/5A is intended for DC line protection where polarity is fixed, whereas SMA5J30CA suits AC or differential signal lines.
What is the thermal resistance of the SMA5J30AHE3/5A, and how does it affect layout?
The SMA5J30AHE3/5A 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. To maintain safe junction temperatures during repetitive surges, PCB layout must provide adequate copper area and thermal vias - reducing RθJA improves surge repetition rate capability and long-term reliability of the SMA5J30AHE3/5A.
SMA5J30AHE3/5A 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMA5J30AHE3/5A FAQ
1.How can I place an order for SMA5J30AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30AHE3/5A 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 SMA5J30AHE3/5A reliable?
The price and inventory of SMA5J30AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J30AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J30AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30AHE3/5A?
SMA5J30AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30AHE3/5A 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 SMA5J30AHE3/5A?
For technical support, including SMA5J30AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30AHE3/5A requirements.
6.How does Aetrix verify that SMA5J30AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J30AHE3/5A 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 SMA5J30AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J30AHE3/5A?
All SMA5J30AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30AHE3/5A, 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 SMA5J30AHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J30AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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