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Vishay General Semiconductor - Diodes Division SA30AHE3/54
- Part No.:
- SA30AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA30AHE3/54.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,589
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Product details
Overview
SA30AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for circuit protection against ESD and surge events. It features 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage at 10 A peak pulse current, 500 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA30AHE3/54 datasheet, SA30AHE3/54 pinout, SA30AHE3/54 application, or SA30AHE3/54 equivalent, this device is selected for robust overvoltage protection in DC power rails, sensor interfaces, and automotive control modules where fast response (<1 ns), low clamping ratio, and high surge reliability are required.
Technical Context
The SA30AHE3/54 operates as a unidirectional avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients. Its 30 V stand-off rating allows stable blocking during normal operation while triggering at ≥33.3 V to clamp damaging surges. The 48.4 V clamping voltage at 10 A ensures downstream ICs (e.g., MCUs, CAN transceivers) remain within safe absolute maximum ratings.
Thermal performance is defined by 175 °C max junction temperature and 3.0 W steady-state power dissipation on infinite heatsink. The device supports 70 A non-repetitive forward surge current (10 ms half-sine), making it suitable for load-dump and inductive switching events common in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse voltage before clamping begins; sets operating margin for 24 V nominal systems. |
| VBR @ 1 mA | 33.3–36.8 V - Guaranteed avalanche initiation range; ensures consistent turn-on across temperature and unit variation. |
| VC @ 10 A | 48.4 V - Clamped voltage during 10/1000 μs surge; limits stress on protected 3.3 V/5 V logic or 40 V-rated MOSFETs. |
| PPPM | 500 W - Peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity. |
| IPPM | 10 A - Peak pulse current corresponding to VC; defines minimum surge current capability for design validation. |
| TJ max | 175 °C - Maximum junction temperature; enables placement near heat sources in engine control units. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22. |
Pinout & Package
Package: DO-15 (DO-204AC), axial lead, epoxy molded, RoHS-compliant matte tin-plated leads. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration. |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repetitive surge stress. |
| 500 W peak pulse power (10/1000 μs) | Supports high-energy transients such as ISO 7637-2 Pulse 5a (load dump) without degradation. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring zero-failure field performance. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD), improving protection margin for sensitive inputs. |
| Matte tin plating, J-STD-002 compliant | Ensures reliable solder wetting and intermetallic formation in reflow and wave soldering processes. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) from load-dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges before they reach DC/DC converters and microcontrollers. Use Value: Limits peak voltage to 48.4 V at 10 A, preventing latch-up or permanent damage to 40 V-rated power management ICs. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs from EFT and surge coupling. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt fast transients (<1 ns rise time) before signal conditioning amplifiers. Use Value: Sub-nanosecond response and 48.4 V clamping preserve signal integrity and prevent ADC saturation or op-amp rail-to-rail excursion. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) 48 V input stage against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device on DC input rail, coordinated with upstream GDT or MOV for staged protection. Use Value: 500 W peak power rating handles multi-kV induced surges per IEC 61000-4-5, while DO-15 footprint enables compact board layout. | 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: Mounted across motor terminals to absorb energy from back-EMF during PWM switching and mechanical commutation. Use Value: 70 A IFSM rating withstands repeated 10 ms half-sine surges from motor stall conditions without parametric shift. |
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-E3/52 | Same VWM (30 V), identical DO-214AC package, but lower PPPM (400 W) and higher VC (48.9 V at 8.3 A). | Less suitable for automotive load-dump where 500 W margin is required; better for space-constrained PCBs needing SMD mounting. | Select SMAJ30A-E3/52 only when surface-mount assembly is mandatory and surge energy is ≤400 W. |
| 1.5KE30A | Higher PPPM (1500 W), DO-201AD package, same VWM/VBR range, but larger footprint and no AEC-Q101 qualification. | Preferred for industrial AC/DC power supplies with high-energy surges; not recommended for automotive due to lack of automotive qualification. | Choose 1.5KE30A for cost-sensitive, non-automotive applications requiring >500 W headroom and legacy through-hole compatibility. |
Compared with SMAJ30A-E3/52 and 1.5KE30A, the SA30AHE3/54 uniquely combines AEC-Q101 qualification, 500 W pulse rating, and DO-15 form factor-making it the optimal choice for automotive and harsh-environment designs where reliability, proven qualification, and standardized axial lead mounting are prioritized.
Availability
SA30AHE3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power inputs, and consumer appliance motor drives requiring stable component supply and long-term lifecycle support.
Supply support for SA30AHE3/54 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, efficiency, and application-specific optimization.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered for high-energy transient suppression in automotive, industrial, and communications infrastructure where robustness and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the SA30AHE3/54 at its rated peak pulse current?
The SA30AHE3/54 has a maximum clamping voltage (VC) of 48.4 V at 10 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per the test conditions specified in Vishay document 88378 and ensures predictable overvoltage limiting for downstream components in 24 V systems. The SA30AHE3/54 maintains this clamping performance across its qualified temperature range.
Is the SA30AHE3/54 suitable for automotive applications?
Yes, the SA30AHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body control modules, and ADAS sensors. Its construction-glass-passivated junction, matte tin leads, and DO-15 package-meets automotive thermal, mechanical, and reliability requirements. The SA30AHE3/54 data sheet confirms qualification per JESD22-A108 and JESD22-A110 test standards.
What does the "HE3" suffix indicate in SA30AHE3/54?
The "HE3" suffix in SA30AHE3/54 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade "E3" versions and confirms compliance with automotive reliability standards. The SA30AHE3/54 meets the same electrical specs as SA30AE3/54 but adds automotive qualification and enhanced plating robustness.
Can the SA30AHE3/54 be used in bidirectional configurations?
No, the SA30AHE3/54 is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix. Bidirectional variants-for example, SA30CA-have symmetrical breakdown in both polarities and no polarity marking. Using SA30AHE3/54 in reverse-biased circuits without proper orientation will result in forward conduction and failure. Always observe the cathode band when installing the SA30AHE3/54.
What is the maximum junction temperature rating for the SA30AHE3/54?
The SA30AHE3/54 has a maximum junction temperature (TJ) rating of +175 °C, allowing operation in high-temperature environments such as under-hood automotive locations or enclosed industrial enclosures. This rating is validated per Vishay's thermal characterization and derating curves in document 88378, and the SA30AHE3/54 maintains full electrical specifications up to this limit.
SA30AHE3/54 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA30AHE3/54 FAQ
1.How can I place an order for SA30AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA30AHE3/54 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 SA30AHE3/54 reliable?
The price and inventory of SA30AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA30AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA30AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA30AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA30AHE3/54?
SA30AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA30AHE3/54 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 SA30AHE3/54?
For technical support, including SA30AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA30AHE3/54 requirements.
6.How does Aetrix verify that SA30AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA30AHE3/54 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 SA30AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA30AHE3/54?
All SA30AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA30AHE3/54, 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 SA30AHE3/54 part is unused and in its original packaging.
Return procedure for SA30AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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