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Vishay General Semiconductor - Diodes Division SA30A-E3/54
- Part No.:
- SA30A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA30A-E3/54.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,823
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Product details
Overview
SA30A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for circuit protection against ESD and surge transients. It features 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 A peak pulse current, and 500 W peak pulse power rating with 10/1000 μs waveform - deployed on power rails and I/O lines of industrial sensors and automotive control modules.
For engineers reviewing the SA30A-E3/54 datasheet, SA30A-E3/54 pinout, SA30A-E3/54 application, or SA30A-E3/54 equivalent, key selection criteria include clamping performance under 10 A surge, thermal derating above 25 °C, unidirectional polarity marking, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at 30 V), while the DO-15 package supports manual or wave soldering per J-STD-002.
Designed for single-pulse and repetitive surge events (0.01 % duty cycle), SA30A-E3/54 delivers consistent clamping up to 175 °C junction temperature and withstands 70 A non-repetitive forward surge (IFSM), making it suitable for 12 V/24 V automotive power domains and industrial PLC input stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 12 V/24 V systems |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - precise avalanche threshold ensuring predictable turn-on during transients |
| VC @ IPPM | 48.4 V at 10 A - clamping voltage limits stress on protected ICs during 10/1000 μs surge events |
| PPPM | 500 W - peak pulse power handling capability with standard 10/1000 μs waveform |
| ID @ VWM | <1.0 μA - ultra-low reverse leakage preserves standby power integrity in battery-backed circuits |
| TJ max. | +175 °C - extended junction temperature rating enables use in under-hood automotive environments |
| IFSM | 70 A - surge current robustness against inductive kickback in relay or solenoid drive circuits |
Pinout & Package
SA30A-E3/54 is housed in a DO-15 (DO-204AC) axial-leaded package with matte tin-plated leads. The cathode is marked by a color band on the body; polarity must be observed during PCB layout to ensure correct unidirectional clamping behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference | Connected to lower-potential side (e.g., ground or return path); determines direction of clamping action |
| Cathode | Avalanche conduction node / transient sink | Connected to protected line (e.g., 12 V rail or signal trace); conducts surge current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
| 500 W peak pulse power (10/1000 μs) | Provides robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV contact discharge) |
| RoHS-compliant, commercial grade (E3 suffix) | Meets environmental compliance without lead-free assembly restrictions; JESD 201 Class 1A whisker tested |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS that clamps transients above 33.3 V to limit downstream voltage stress. Use Value: Prevents latch-up or permanent damage to MCU power regulators during ISO 7637-2 Pulse 5a events up to 60 V/100 ms. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog input cards. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed between sensor output and ADC input stage. Use Value: Limits induced surges from nearby motor switching to ≤48.4 V, preserving 12-bit ADC accuracy and preventing input-stage saturation. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Mitigation |
Use Scenario: Secondary-side DC bus protection in wall adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing coupling noise from primary-side flyback transients. Use Value: Maintains 30 V operating margin while clamping 10 A surges within 48.4 V, avoiding brownout of 5 V/9 V/15 V output rails. | Use Scenario: Front-end protection of Ethernet PHY power pins exposed to lightning-induced surges on PoE-powered line cards. IC Role / Device Role / Timing Role: Primary-level unidirectional suppressor on +48 V bias rail prior to DC-DC converter input. Use Value: Withstands 500 W pulses without degradation, enabling compliance with GR-1089-CORE Level 3 telecom surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same VWM/VBR/VC specs but in SMA (DO-214AC) surface-mount package; 1.5 W steady-state rating vs. 3.0 W for SA30A-E3/54 | Preferred for space-constrained PCBs; less suited for high-temperature through-hole mounting or manual repair | Select SMAJ30A when board area is limited and thermal management uses copper pour rather than lead conduction |
| 1.5KE30A | Higher PPPM (1500 W), larger DO-204AL (Axial) package, higher VF (3.5 V), same VWM/VBR range | Better for high-energy surges (e.g., AC mains coupling); not AEC-Q101 qualified | Choose 1.5KE30A only when system-level testing requires >500 W pulse handling and automotive qualification is not required |
Compared with SMAJ30A and 1.5KE30A, SA30A-E3/54 offers optimal balance of axial-leaded mechanical robustness, AEC-Q101 qualification, and 3.0 W steady-state dissipation - making it preferred for automotive and industrial through-hole designs where serviceability and thermal reliability are prioritized over footprint size.
Availability
SA30A-E3/54 is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, and consumer power adapter designs requiring stable component supply and long-term lifecycle continuity.
Supply support for SA30A-E3/54 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 and application-specific validation.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered for robust transient suppression in automotive, industrial, and telecom systems where precise clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SA30A-E3/54 at its rated peak pulse current?
The SA30A-E3/54 has a maximum clamping voltage (VC) of 48.4 V at 10 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured across the device terminals during standardized surge testing and defines the upper voltage limit imposed on protected circuits during transient events. The SA30A-E3/54 maintains this clamping performance across its full operating temperature range up to +175 °C junction temperature.
Is SA30A-E3/54 qualified for automotive applications?
Yes, SA30A-E3/54 is AEC-Q101 qualified, confirming its suitability for automotive electronic systems including engine control units, body control modules, and ADAS sensor interfaces. The qualification covers stress tests for temperature cycling, humidity, mechanical shock, and surge robustness. While the E3 suffix denotes RoHS-compliant commercial grade, the device meets all AEC-Q101 requirements as documented in Vishay's certification records for the SAxxA family.
What does the "E3/54" suffix mean in SA30A-E3/54?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting JESD 201 Class 1A whisker resistance. The "/54" denotes the preferred package code for DO-15 packaging supplied in 13-inch paper tape and reel format with a base quantity of 4000 units. This ordering code ensures traceable sourcing and compatibility with standard axial-leaded automated placement equipment.
How does SA30A-E3/54 differ from bidirectional variants like SA30CA?
SA30A-E3/54 is unidirectional and features a cathode band for polarity identification, while SA30CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The SA30A-E3/54 exhibits forward conduction below ~0.7 V and blocks reverse voltage up to 30 V, whereas SA30CA clamps equally for positive and negative transients. Their VBR and VC values differ slightly due to internal structure - SA30A-E3/54 has VBR 33.3–36.8 V, while SA30CA has identical VBR but dual-directional response.
Can SA30A-E3/54 be used in parallel for higher surge current handling?
No, SA30A-E3/54 should not be paralleled without external balancing components, as minor VBR tolerances (±5 %) cause uneven current sharing during transients - one device may dominate conduction and fail prematurely. For higher surge ratings, select a single higher-power TVS such as 1.5KE30A (1500 W) or verify matched-bin devices with <1 % VBR spread. Parallel operation is not recommended unless validated per IEC 61000-4-5 system-level testing with current-sharing resistors.
SA30A-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- 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):
- 10A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA30A-E3/54 FAQ
1.How can I place an order for SA30A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA30A-E3/54 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 SA30A-E3/54 reliable?
The price and inventory of SA30A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA30A-E3/54 is usually 5 days.
3.What payment methods are accepted for SA30A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA30A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA30A-E3/54?
SA30A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA30A-E3/54 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 SA30A-E3/54?
For technical support, including SA30A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA30A-E3/54 requirements.
6.How does Aetrix verify that SA30A-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA30A-E3/54 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 SA30A-E3/54 meets industry standards.
7.What is the process for return or replacement of SA30A-E3/54?
All SA30A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA30A-E3/54, 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 SA30A-E3/54 part is unused and in its original packaging.
Return procedure for SA30A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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