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Vishay General Semiconductor - Diodes Division SMA5J30A-M3/61
- Part No.:
- SMA5J30A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30A-M3/61.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J30A-M3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on DC power rails 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 control systems.
For engineers reviewing the SMA5J30A-M3/61 datasheet, SMA5J30A-M3/61 pinout, SMA5J30A-M3/61 application, or SMA5J30A-M3/61 equivalent, key selection criteria include clamping performance under 10.3 A surge, thermal resistance (RθJA = 80 °C/W), halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range (33.3–36.8 V). Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at 30 V), while fast response time (<1 ns) enables suppression of ESD and lightning-induced transients before sensitive downstream components are damaged.
Designed for surface-mount use in high-reliability environments, SMA5J30A-M3/61 meets MSL level 1 per J-STD-020 (peak reflow 260 °C), supports 40 A non-repetitive forward surge (IFSM), and maintains operation across -55 °C to +150 °C junction temperature range - making it suitable for under-hood automotive and industrial power supply protection where thermal cycling and long-term stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 3.3 V/5 V/12 V/24 V systems. |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - guaranteed avalanche initiation window; ensures predictable turn-on without premature conduction. |
| VC @ IPPM | 48.4 V at 10.3 A - clamped voltage during 10/1000 μs surge; limits stress on protected ICs to safe levels. |
| PPPM | 500 W - peak pulse power handling capability; validates robustness against IEC 61000-4-5 Level 4 surges. |
| RθJA | 80 °C/W - junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm pads; informs PCB thermal design for sustained surge duty. |
| ID @ VWM | <1.0 μA - reverse leakage at rated stand-off; minimizes standby power loss in battery-powered applications. |
| TJ max. | +150 °C - maximum junction temperature; supports operation in high-ambient environments like engine control units. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant (M3 suffix), matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / cathode-referenced ground path | Connected to system ground or low-side return; forms clamping path during overvoltage events. |
| Cathode | Reverse-biased input / protected line connection | Connected to the line being protected (e.g., 24 V supply rail); avalanche conduction occurs here during transients. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables compact PCB layout in space-constrained modules such as ADAS ECUs and motor drive controllers. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift. |
| MSL Level 1 rating | Supports single-reflow assembly without moisture sensitivity concerns - eliminates bake requirements pre-SMT. |
| Halogen-free construction (M3) | Meets automotive OEM environmental mandates (e.g., GMW3172, Ford WSS-M99P9999-A1) and simplifies end-of-life recycling. |
| Fast response time (<1 ns) | Clamps transients before propagation into microcontrollers or analog front-ends, preserving signal integrity in CAN/LIN bus nodes. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in body control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤48.4 V during 10/1000 μs surges up to 500 W, preventing latch-up or damage to downstream PMICs. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors from ESD and field wiring faults. IC Role / Device Role / Timing Role: Bidirectional-capable protection device (though SMA5J30A-M3/61 is unidirectional, used with series resistor for bidirectional effect) placed at connector interface. Use Value: Clamps fast-rising transients (<1 ns response) while maintaining <1.0 μA leakage at 30 V, avoiding measurement offset in precision sensing. |
| Motor Drive Gate Driver Protection | Telecom DC Power Input Protection |
Use Scenario: Safeguarding high-side gate driver ICs in BLDC inverters from inductive kickback during MOSFET switching. IC Role / Device Role / Timing Role: TVS connected between gate driver VDD and GND, referenced to local ground plane. Use Value: Absorbs 500 W pulses without degradation, enabling reliable operation at TJ up to +150 °C near power stages. | Use Scenario: Protecting primary 48 V DC input of PoE-powered network switches from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line unidirectional clamp on main power entry before DC-DC conversion and isolation. Use Value: Withstands 40 A IFSM surge and maintains clamping at 48.4 V, ensuring upstream fuse coordination and system-level IEC 61000-4-5 compliance. |
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-E3/61 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Approved for commercial-grade applications where halogen-free requirement is not mandated (e.g., consumer electronics). | Select SMA5J30A-E3/61 only if halogen-free certification is not required by your OEM or regulatory standard. |
| SMA5J30AHM3_A/H | AEC-Q101 qualified; identical electrical specs and M3 halogen-free construction, plus automotive qualification. | Required for automotive under-hood applications subject to AEC-Q101 stress testing (e.g., engine control, transmission modules). | Choose SMA5J30AHM3_A/H when automotive qualification and traceable lot documentation are mandatory. |
Compared with SMA5J30A-M3/61, the E3 variant lacks halogen-free compliance but offers identical surge ratings, while the HM3_A/H version adds AEC-Q101 qualification - enabling drop-in use in automotive designs without layout change but requiring stricter sourcing controls and qualification documentation.
Availability
SMA5J30A-M3/61 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, consistent M3 halogen-free compliance, and full traceability through Vishay's authorized channel.
Supply support for SMA5J30A-M3/61 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 density, and automotive-grade qualification.
SMA5J30A-M3/61 belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for robust transient suppression in harsh environments - including automotive, industrial automation, and infrastructure equipment where failure modes must be mitigated without derating.
FAQ
What is the clamping voltage of SMA5J30A-M3/61 at its rated peak pulse current?
The clamping voltage (VC) of SMA5J30A-M3/61 is 48.4 V at 10.3 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per JEDEC standards and reflects the maximum voltage seen by protected circuitry during a standardized surge event. The SMA5J30A-M3/61 maintains this clamping performance across its operational temperature range, ensuring consistent protection in demanding environments.
Is SMA5J30A-M3/61 suitable for automotive applications?
SMA5J30A-M3/61 is halogen-free and RoHS-compliant but not AEC-Q101 qualified. It is approved for commercial-grade automotive subsystems where qualification is not mandated (e.g., infotainment power rails). For under-hood or safety-critical modules, Vishay recommends SMA5J30AHM3_A/H instead. The SMA5J30A-M3/61 itself supports -55 °C to +150 °C operation and MSL Level 1 reflow, aligning with many automotive manufacturing requirements.
What does the "M3" suffix mean in SMA5J30A-M3/61?
The "M3" suffix in SMA5J30A-M3/61 indicates halogen-free, RoHS-compliant construction meeting Vishay's material specification for environmentally restricted substances. It also denotes compliance with JESD201 Class 2 whisker resistance and matte tin plating per J-STD-002. This distinguishes it from the E3 variant (RoHS-compliant but not halogen-free) and HM3 variants (AEC-Q101 qualified + halogen-free).
Can SMA5J30A-M3/61 be used in bidirectional protection circuits?
No - SMA5J30A-M3/61 is a unidirectional TVS diode, intended for DC rail protection where polarity is fixed. For true bidirectional protection (e.g., AC lines or differential buses), Vishay specifies CA-suffix parts like SMA5J30CA. Using SMA5J30A-M3/61 in reverse-biased configurations risks permanent damage due to lack of symmetrical avalanche structure.
What is the recommended PCB pad layout for SMA5J30A-M3/61?
Vishay specifies mounting SMA5J30A-M3/61 on 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pads per terminal to achieve rated thermal and surge performance. This layout ensures RθJA = 80 °C/W and supports full 500 W PPPM dissipation. Smaller pads increase thermal resistance and reduce surge capability - verified in Figure 2 of the datasheet (derating above TA = 25 °C).
SMA5J30A-M3/61 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J30A-M3/61 FAQ
1.How can I place an order for SMA5J30A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30A-M3/61 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 SMA5J30A-M3/61 reliable?
The price and inventory of SMA5J30A-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J30A-M3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J30A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30A-M3/61?
SMA5J30A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30A-M3/61 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 SMA5J30A-M3/61?
For technical support, including SMA5J30A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30A-M3/61 requirements.
6.How does Aetrix verify that SMA5J30A-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J30A-M3/61 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 SMA5J30A-M3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J30A-M3/61?
All SMA5J30A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30A-M3/61, 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 SMA5J30A-M3/61 part is unused and in its original packaging.
Return procedure for SMA5J30A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J30A-M3/61 Tags
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