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Vishay General Semiconductor - Diodes Division SA30-E3/54
- Part No.:
- SA30-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA30-E3/54.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,150
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Product details
Overview
SA30-E3/54 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1.0 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 - suitable for automotive ECU power input protection and industrial sensor interface surge hardening.
For engineers reviewing the SA30-E3/54 datasheet, SA30-E3/54 pinout, SA30-E3/54 application, or SA30-E3/54 equivalent, this part delivers verified AEC-Q101 qualification, glass-passivated junction reliability, and low incremental surge resistance for robust transient suppression in 12 V/24 V systems where fast response (<1 ns), stable clamping, and repeatable surge handling are critical.
Technical Context
The SA30-E3/54 operates as a uni-directional avalanche diode, conducting only when reverse voltage exceeds its VBR threshold (min. 33.3 V, max. 36.8 V), with forward conduction limited to ≤3.5 V at 100 A surge. Its DO-204AC package supports lead-free soldering per J-STD-002 and withstands 275 °C dip for 10 s.
It is rated for 70 A non-repetitive forward surge current (IFSM), 3.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C, and operates across –55 °C to +175 °C junction temperature range - enabling use in under-hood automotive and high-ambient industrial environments without derating penalties below 125 °C.
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 24 V nominal systems. |
| VBR @ IT = 1.0 mA | 33.3–36.8 V - Confirmed avalanche onset range; ensures predictable turn-on with ≤10.9% tolerance for consistent system-level protection thresholds. |
| VC @ IPPM = 10 A | 48.4 V - Clamped voltage during 10/1000 μs surge; limits downstream IC stress to <50 V in 24 V supply paths. |
| PPPM | 500 W - Peak pulse power handling with 10/1000 μs waveform; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity testing. |
| IFSM | 70 A - Single half-sine surge rating (8.3 ms); accommodates motor load dump transients in automotive power distribution. |
| Junction Temp. Range | –55 °C to +175 °C - Enables direct placement near heat sources (e.g., power MOSFETs) without thermal derating in engine control modules. |
Pinout & Package
DO-204AC (DO-15) molded epoxy package with matte tin-plated leads; cathode indicated by color band on body end. Leads conform to JESD 22-B102 solderability and JESD 201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to ground or low-impedance return plane; carries full surge current during clamping events. |
| Cathode (banded end) | Reverse voltage sensing / Clamping node | Connected to protected line (e.g., 24 V rail); initiates avalanche conduction when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR over lifetime and humidity exposure; eliminates surface leakage drift in humid industrial enclosures. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics; includes temperature cycling, HTRB, and surge endurance per stress test plan. |
| 500 W peak pulse power (10/1000 μs) | Supports repeated surge events up to 0.01% duty cycle without parameter shift - critical for CAN/LIN bus power rail protection. |
| Low incremental surge resistance | Minimizes VC – VBR differential (ΔV ≈ 15.1 V at 10 A); reduces energy dissipation in protected ICs during clamping. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets EU Directive 2011/65/EU; compatible with lead-free reflow and wave soldering processes in high-volume manufacturing. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 24 V battery feed to engine control unit (ECU) subjected to load dump (ISO 7637-2 Pulse 5a) and jump-start surges. IC Role / Device Role / Timing Role: Primary shunt TVS placed directly at ECU power entry point to clamp transients before they reach DC/DC converters and microcontrollers. Use Value: Limits peak rail voltage to ≤48.4 V during 10 A surges, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. |
Use Scenario: Analog output line (0–10 V) from pressure sensor exposed to ESD and inductive switching noise in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Uni-directional TVS connected between signal line and ground to suppress ±8 kV contact ESD (IEC 61000-4-2) and 40 V inductive spikes. Use Value: Responds in <1 ns to divert >95% of ESD current away from op-amp input stage, preserving signal integrity and calibration stability. |
| DC Motor Drive Power Rail Clamp | Telecom Power Feeder Protection |
Use Scenario: 24 V H-bridge driver board controlling linear actuators, experiencing back-EMF reversal and commutation spikes. IC Role / Device Role / Timing Role: TVS mounted across motor supply terminals to absorb inductive kickback energy during PWM switching transitions. Use Value: Handles 70 A single-pulse surge (8.3 ms) without degradation, eliminating need for external snubbers or oversized capacitors. |
Use Scenario: -48 V telecom power feed entering remote radio head (RRH), exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage protector on DC input before DC/DC isolation stage, sized for 10/1000 μs threat profile. Use Value: Clamps to 48.4 V while dissipating 500 W peak, reducing secondary protector stress and extending system MTBF in harsh RF sites. |
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 | Same DO-214AC package; lower PPPM (400 W), higher VC (48.8 V at 10.3 A), wider VBR tolerance (33.3–37.1 V). | Less robust for repetitive surge environments; not AEC-Q101 qualified. | Select SMAJ30A only for cost-sensitive consumer-grade designs where AEC-Q101 and 500 W rating are not required. |
| 1.5SMC30A | DO-214AB package; identical VWM/VBR/VC specs but higher thermal resistance (RθJA ≈ 60 °C/W vs. DO-15's ~50 °C/W). | Lower power density limits sustained surge duty cycles; requires larger PCB footprint. | Choose 1.5SMC30A only if DO-214AB footprint is already standardized in legacy layouts and thermal margin ≥15 °C is confirmed. |
Compared with SMAJ30A and 1.5SMC30A, SA30-E3/54 offers superior automotive qualification, tighter VBR tolerance, and optimized thermal performance in the compact DO-15 form factor - making it the preferred choice for new AEC-Q101-compliant designs requiring high-reliability surge suppression.
Availability
SA30-E3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, DC motor drive protection, and telecom power feeder circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SA30-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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The SAxx series TVS diodes are engineered for robust transient suppression in harsh environments - targeting automotive power distribution, industrial I/O protection, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of SA30-E3/54 at 10 A peak pulse current?
The SA30-E3/54 has a maximum clamping voltage (VC) of 48.4 V when subjected to a 10 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88378, page 2) and defines the upper voltage limit imposed on protected circuitry during surge events. Maintaining VC ≤48.4 V ensures compatibility with 36 V-rated downstream components in 24 V systems.
Is SA30-E3/54 qualified for automotive applications?
Yes, SA30-E3/54 is AEC-Q101 qualified, as confirmed in the Vishay datasheet (Revision: 18-Sep-12, page 3, Note 1). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and surge endurance - validating its suitability for engine control units, body electronics, and other automotive subsystems where reliability under thermal and electrical stress is critical. The E3 suffix denotes RoHS-compliant commercial grade, while HE3 would indicate AEC-Q101 grade.
What is the package type and lead finish of SA30-E3/54?
SA30-E3/54 uses the DO-204AC (DO-15) molded epoxy package with matte tin-plated leads. The leads meet J-STD-002 and JESD 22-B102 solderability standards and pass JESD 201 Class 1A whisker testing. The package dimensions are specified in inches and millimeters on page 5 of the Vishay datasheet (Document Number: 88378), with a body diameter of 0.104–0.140 inches and lead length ≥1.0 inch.
Does SA30-E3/54 have bidirectional capability?
No, SA30-E3/54 is a uni-directional TVS diode, as indicated by the "A" suffix (not "CA"). Its polarity is marked by a cathode band on the banded end, and it conducts only in reverse bias above VBR. Bi-directional variants such as SA30CA exist in the same family but are distinct orderable parts with symmetric breakdown in both directions - SA30-E3/54 must not be substituted for bi-directional applications like AC line or data bus protection without redesign.
What is the peak forward surge current rating for SA30-E3/54?
The SA30-E3/54 is rated for a peak forward surge current (IFSM) of 70 A, defined as a single 8.3 ms half-sine wave per JEDEC standards. This rating applies only to forward conduction (anode positive relative to cathode) and supports protection against load dump events in 12 V/24 V automotive systems. The parameter is listed in the "MAXIMUM RATINGS" table on page 1 of the Vishay datasheet (Document Number: 88378).
SA30-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 53.5V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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)
SA30-E3/54 FAQ
1.How can I place an order for SA30-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA30-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 SA30-E3/54 reliable?
The price and inventory of SA30-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 SA30-E3/54 is usually 5 days.
3.What payment methods are accepted for SA30-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA30-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA30-E3/54?
SA30-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA30-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 SA30-E3/54?
For technical support, including SA30-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA30-E3/54 requirements.
6.How does Aetrix verify that SA30-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA30-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 SA30-E3/54 meets industry standards.
7.What is the process for return or replacement of SA30-E3/54?
All SA30-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA30-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 SA30-E3/54 part is unused and in its original packaging.
Return procedure for SA30-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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