My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J30A-E3/5A
- Part No.:
- SMA5J30A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30A-E3/5A.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,920
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J30A-E3/5A 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) 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 - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the SMA5J30A-E3/5A datasheet, SMA5J30A-E3/5A pinout, SMA5J30A-E3/5A application, or SMA5J30A-E3/5A equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin-plated leads, MSL Level 1 moisture sensitivity, 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 enters avalanche conduction when reverse voltage exceeds its VBR range (33.3–36.8 V), limiting transient-induced overvoltage to ≤48.4 V at 10.3 A. Its glass-passivated junction ensures stable leakage (<1.0 μA at 30 V) and fast response time under ESD and lightning-surge conditions.
Thermal performance is defined by RθJA = 80 °C/W and RθJL = 25 °C/W, enabling reliable operation up to 150 °C junction temperature. The device supports unidirectional surge suppression only, with cathode indicated by a band, and is not rated for bidirectional use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 33.3 V / 36.8 V at 1 mA - defines guaranteed avalanche onset window for design margining |
| VC @ IPPM | 48.4 V at 10.3 A - clamped voltage during 10/1000 μs surge, directly limiting downstream IC stress |
| PPPM | 500 W - peak transient energy absorption capability under standardized waveform |
| TJ max | +150 °C - maximum allowable junction temperature for sustained reliability in under-hood or industrial enclosures |
| ID @ VWM | ≤1.0 μA - ultra-low leakage preserves signal integrity and battery drain in always-on circuits |
| Package | SMA (DO-214AC) - surface-mount outline with 5.28 mm length, 4.50 mm width, 2.29 mm height, optimized for high-density PCB layouts |
Pinout & Package
Two-terminal unidirectional TVS diode in SMA (DO-214AC) package. Cathode is marked by a band on the body; anode is unmarked. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction; connected to system ground or low-side return path | Provides reference node for clamping action; must be routed with low-inductance path to minimize overshoot |
| Cathode | Current exit terminal during reverse avalanche; connected to protected line (e.g., 30 V rail or sensor input) | Band-marked terminal - polarity-critical connection; reversal disables surge protection and risks short-circuit failure |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables placement in space-constrained modules (e.g., automotive ECUs, IoT edge nodes) without height interference |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term leakage stability across temperature and humidity stress |
| 500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) on 24–36 V systems |
| MSL Level 1 rating | Allows single-reflow assembly without baking, reducing manufacturing cost and handling complexity |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive-grade deployment; this E3/5A variant is commercial-grade |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V/30 V battery-fed control modules against load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground, activated within <1 ns of overvoltage event. Use Value: Limits rail voltage to ≤48.4 V during 10.3 A surge, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Safeguarding analog inputs of pressure/temperature sensors in factory automation PLCs exposed to relay-coil switching noise. IC Role / Device Role / Timing Role: Standoff-mode protector on sensor signal line, conducting only during >33.3 V transients while maintaining <1.0 μA leakage at 30 V DC bias. Use Value: Preserves measurement accuracy and eliminates false triggers caused by 1–100 ns EFT bursts per IEC 61000-4-4. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding 48 V PoE-powered equipment front-end from induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on DC input stage, coordinated with upstream fuse and downstream π-filter for multi-stage protection. Use Value: Absorbs 500 W transient energy without degradation, meeting GR-1089-CORE telecom immunity requirements. | Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Freewheeling clamp across motor terminals, routing flyback energy away from H-bridge MOSFETs. Use Value: Prevents MOSFET avalanche failure by clamping voltage to 48.4 V, extending drive-stage lifetime under repeated commutation cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/5A | 400 W PPPM (vs. 500 W), same VWM/VBR/VC, identical SMA package and pinout | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); insufficient for ISO 7637-2 Pulse 5a | Select SMA5J30A-E3/5A where 500 W surge margin is required; SMAJ30A-E3/5A suits cost-sensitive, lower-risk consumer designs |
| SMCJ30A-E3/57T | Same 500 W PPPM but in larger SMC (DO-214AB) package; higher thermal mass, RθJA = 35 °C/W | Better thermal performance in high-ambient environments (>85 °C), but requires 30% more PCB area | Choose SMA5J30A-E3/5A for space-constrained SMT layouts; SMCJ30A-E3/57T where board real estate allows and thermal derating is critical |
Compared with SMAJ30A-E3/5A and SMCJ30A-E3/57T, the SMA5J30A-E3/5A delivers optimal balance of high surge capacity (500 W), compact SMA footprint, and commercial-grade reliability - making it preferred for automotive body electronics and industrial edge controllers where volume, cost, and performance intersect.
Availability
SMA5J30A-E3/5A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom DC input protection requiring stable component supply, full traceability, and consistent lead-time performance.
Supply support for SMA5J30A-E3/5A 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, MOSFETs, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against repetitive surges and long-term parametric stability are mandatory.
FAQ
What is the maximum clamping voltage of the SMA5J30A-E3/5A under standard test conditions?
The SMA5J30A-E3/5A has a maximum clamping voltage (VC) of 48.4 V when subjected to a 10/1000 μs surge waveform at its rated peak pulse current of 10.3 A. This value is measured at TA = 25 °C with the device mounted on 5.0 mm × 5.0 mm copper pads per JEDEC standards. The clamping voltage ensures downstream components see no more than 48.4 V during transient events, directly supporting design margining for 30 V rail systems.
Is the SMA5J30A-E3/5A suitable for bidirectional transient suppression?
No, the SMA5J30A-E3/5A is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics - including breakdown voltage and clamping behavior - apply only in reverse-bias mode. For bidirectional protection, Vishay specifies part numbers ending in "CA" (e.g., SMA5J30CA). Using SMA5J30A-E3/5A in a bidirectional configuration may result in improper clamping or catastrophic failure during positive-going transients.
What does the "E3/5A" suffix indicate in SMA5J30A-E3/5A?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "5A" specifies the packaging format - 7500 units per 13-inch plastic tape-and-reel. This contrasts with "E3/61", which uses 1800 units per 7-inch reel. Both share identical electrical and thermal specifications; the suffix solely identifies environmental compliance and logistics configuration for SMA5J30A-E3/5A.
Does the SMA5J30A-E3/5A meet AEC-Q101 qualification?
The SMA5J30A-E3/5A is not AEC-Q101 qualified; it is a commercial-grade device. Vishay offers AEC-Q101 qualified versions under the HE3 (RoHS-compliant + AEC-Q101) or HM3 (halogen-free + RoHS + AEC-Q101) suffixes - for example, SMA5J30AHE3_A/I. Engineers requiring automotive-grade reliability must select those variants explicitly; SMA5J30A-E3/5A is intended for industrial, telecom, and consumer applications where extended temperature cycling validation is not mandated.
How does the thermal resistance of SMA5J30A-E3/5A affect PCB layout decisions?
The SMA5J30A-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W, meaning each watt of dissipated surge energy raises junction temperature by 80 °C above ambient - assuming the recommended 5.0 mm × 5.0 mm copper pad per terminal. To maintain TJ ≤ 150 °C during repeated surges, designers must ensure adequate copper area, avoid thermal isolation, and consider airflow or heatsinking if ambient exceeds 70 °C. Layout deviations directly impact safe surge repetition rate and long-term parametric drift.
SMA5J30A-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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-E3/5A FAQ
1.How can I place an order for SMA5J30A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30A-E3/5A 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 SMA5J30A-E3/5A reliable?
The price and inventory of SMA5J30A-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J30A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J30A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30A-E3/5A?
SMA5J30A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30A-E3/5A 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 SMA5J30A-E3/5A?
For technical support, including SMA5J30A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30A-E3/5A requirements.
6.How does Aetrix verify that SMA5J30A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J30A-E3/5A 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 SMA5J30A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J30A-E3/5A?
All SMA5J30A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30A-E3/5A, 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 SMA5J30A-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J30A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J30A-E3/5A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
