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Vishay General Semiconductor - Diodes Division SMA5J30AHM3/I
- Part No.:
- SMA5J30AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30AHM3/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,336
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Product details
Overview
SMA5J30AHM3/I 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) at 1 mA, 48.4 V clamping voltage (VC) 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 rails.
For engineers reviewing the SMA5J30AHM3/I datasheet, SMA5J30AHM3/I pinout, SMA5J30AHM3/I application, or SMA5J30AHM3/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below 30 V reverse stand-off voltage and rapidly avalanches above its 33.3–36.8 V breakdown threshold to limit transient overvoltages. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps), critical for protecting sensitive downstream circuitry from inductive switching spikes and ESD events.
The SMA5J30AHM3/I is rated for 40 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), exhibits 25 °C/W junction-to-lead thermal resistance (RθJL), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak - confirming suitability for high-reliability, high-volume surface-mount assembly without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC bias margin for protected line. |
| VBR min/max | 33.3 V / 36.8 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients without premature triggering. |
| VC @ IPPM | 48.4 V at 10.3 A - Clamped voltage under 10/1000 μs surge; determines maximum stress imposed on downstream components. |
| PPPM | 500 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial ambient environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with cathode band marking; compatible with JEDEC-compliant pick-and-place and reflow. |
| Qualification | AEC-Q101 qualified (HM3 suffix) - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, and polarity indicated by cathode band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or lower-potential rail in unidirectional clamp configuration; forms return path during surge conduction. |
| Cathode | Reverse-biased terminal / protected line input | Connected to the line being protected (e.g., 30 V supply rail); avalanche conduction occurs when voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Enables tighter clamping (VC = 48.4 V) under high-current transients, reducing voltage overshoot on protected nodes. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage performance across temperature and humidity stress conditions. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profile use (260 °C peak) without baking or special handling. |
| AEC-Q101 qualification (HM3) | Validates reliability for automotive powertrain, body control, and ADAS modules requiring zero-defect field performance. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and ground, absorbing up to 500 W surges without failure. Use Value: Limits clamped voltage to 48.4 V, ensuring downstream regulators and microcontrollers remain within absolute maximum ratings. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) in factory automation sensors exposed to cable-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across signal and return, conducting only during >30 V transients. Use Value: Maintains <1.0 μA leakage at 30 V, preserving signal integrity and measurement accuracy during normal operation. |
| DC-DC Converter Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Shielding buck converter inputs from flyback spikes generated by relay or solenoid switching in HVAC control systems. IC Role / Device Role / Timing Role: Fast-response TVS placed upstream of input capacitor to shunt energy before it reaches controller IC. Use Value: Sub-nanosecond response time prevents voltage overshoot from propagating into switching regulator feedback network. |
Use Scenario: Preventing gate oxide damage in N-channel MOSFET drivers due to Miller-induced voltage spikes during high dv/dt switching. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) mounted directly at driver output pin to ground. Use Value: Clamps gate-source voltage to ≤48.4 V while adding negligible capacitive loading to high-speed gate drive path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J30AHE3/I | Same electrical specs, but RoHS-compliant commercial grade (E3) without AEC-Q101 qualification; no halogen-free assurance. | Approved for consumer/industrial designs where automotive qualification is not required; lower cost tier. | Select SMA5J30AHE3/I when AEC-Q101 is unnecessary and halogen content is unrestricted. |
| SMCJ30A | Higher power rating (1500 W PPPM), larger SMC (DO-214AB) package, same VWM/VBR/VC specs; 2× footprint area. | Used where higher surge immunity (IEC 61000-4-5 Level 5) or thermal margin is needed; requires PCB layout change. | Choose SMCJ30A only if 500 W is insufficient and board space allows larger SMC footprint. |
Compared with SMA5J30AHM3/I, SMA5J30AHE3/I offers identical clamping performance without automotive qualification, while SMCJ30A delivers triple the surge power in a physically larger package - making SMA5J30AHM3/I the optimal balance of AEC-Q101 compliance, halogen-free materials, and compact SMA form factor for space-constrained automotive modules.
Availability
SMA5J30AHM3/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and DC-DC converter input stages requiring stable component supply with guaranteed AEC-Q101 qualification and halogen-free compliance.
Supply support for SMA5J30AHM3/I 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 high-reliability, high-power-density solutions.
The SMA5J series was developed specifically for automotive and industrial transient suppression, combining high PPPM in compact SMA packages with AEC-Q101 validation and robust thermal performance.
FAQ
What is the polarity configuration of the SMA5J30AHM3/I?
The SMA5J30AHM3/I is a unidirectional TVS diode, with polarity marked by a cathode band on the SMA package. The cathode terminal connects to the line being protected (e.g., +30 V rail), and the anode connects to ground - enabling conduction only during positive-going transients relative to ground.
Does the SMA5J30AHM3/I meet automotive qualification standards?
Yes, the SMA5J30AHM3/I carries the HM3 suffix, indicating it is halogen-free, RoHS-compliant, and fully qualified to AEC-Q101 Rev D for automotive applications - including temperature cycling, high-temperature reverse bias, and ESD testing per JESD22-A114.
What is the maximum clamping voltage of the SMA5J30AHM3/I under surge conditions?
The SMA5J30AHM3/I has a maximum clamping voltage (VC) of 48.4 V at 10.3 A peak pulse current (IPPM) using the standard 10/1000 μs waveform - verified per datasheet Table on page 2 and consistent across production lots.
Can the SMA5J30AHM3/I be used in bidirectional protection circuits?
No - the SMA5J30AHM3/I is strictly unidirectional. For bidirectional protection, Vishay specifies part numbers ending in "CA" (e.g., SMA5J30CA); those devices have symmetrical breakdown in both directions and no polarity marking.
What is the thermal resistance specification for the SMA5J30AHM3/I?
The SMA5J30AHM3/I has a typical junction-to-lead thermal resistance (RθJL) of 25 °C/W, measured under standard mounting conditions (0.2" × 0.2" copper pads). This value supports reliable power dissipation during repetitive surge events when PCB copper area is properly implemented.
SMA5J30AHM3/I 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:
- 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)
SMA5J30AHM3/I FAQ
1.How can I place an order for SMA5J30AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30AHM3/I 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 SMA5J30AHM3/I reliable?
The price and inventory of SMA5J30AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J30AHM3/I is usually 5 days.
3.What payment methods are accepted for SMA5J30AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30AHM3/I?
SMA5J30AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30AHM3/I 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 SMA5J30AHM3/I?
For technical support, including SMA5J30AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30AHM3/I requirements.
6.How does Aetrix verify that SMA5J30AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMA5J30AHM3/I 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 SMA5J30AHM3/I meets industry standards.
7.What is the process for return or replacement of SMA5J30AHM3/I?
All SMA5J30AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30AHM3/I, 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 SMA5J30AHM3/I part is unused and in its original packaging.
Return procedure for SMA5J30AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J30AHM3/I Tags
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