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Vishay General Semiconductor - Diodes Division SA30HE3/54
- Part No.:
- SA30HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA30HE3/54.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,399
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Product details
Overview
SA30HE3/54 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 mA, 48.4 V clamping voltage (VC) at 10 A peak pulse current, 500 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SA30HE3/54 datasheet, SA30HE3/54 pinout, SA30HE3/54 application, or SA30HE3/54 equivalent, this part is selected for robust ESD and surge protection in automotive body control modules, industrial sensor interfaces, and 24 V DC power input stages where stable clamping performance and high surge immunity are required.
Technical Context
The SA30HE3/54 operates as a uni-directional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient events and low incremental surge resistance. Its VBR tolerance (±5 %) and temperature coefficient (+0.09 %/°C) ensure predictable clamping behavior across -55 °C to +175 °C operating range.
It delivers 10 A peak pulse current (IPPM) under 10/1000 μs waveform while maintaining VC ≤ 48.4 V - critical for protecting downstream 3.3 V or 5 V logic from 24 V rail transients. The device supports 70 A non-repetitive forward surge current (IFSM) and dissipates up to 3.0 W continuously on an infinite heatsink at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse working voltage before clamping begins; sets protection threshold for 24 V nominal systems. |
| VBR @ IT = 1 mA | 33.3–36.8 V - guaranteed breakdown range ensures reliable turn-on without premature conduction during normal operation. |
| VC @ IPPM = 10 A | 48.4 V - clamped voltage during 10/1000 μs surge; defines upper limit seen by protected ICs. |
| PPPM | 500 W - peak pulse power handling capability; enables survival of ISO 7637-2 Pulse 1/2a/5a surges in automotive environments. |
| IFSM | 70 A - single half-sine surge rating (8.3 ms); supports protection against load dump events in 24 V vehicle systems. |
| TJ max. | +175 °C - extended junction temperature rating allows use in under-hood or high-ambient industrial enclosures. |
| AEC-Q101 | Qualified - validated for automotive applications including temperature cycling, HTRB, and ESD per JESD22-A114. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0. Matte tin-plated leads, RoHS-compliant, AEC-Q101 qualified (HE3 suffix). Polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or lower-potential node; completes clamping path during positive transients on cathode side. |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., 24 V supply rail); conducts when voltage exceeds VWM. |
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) | Withstands automotive ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 3 surges without degradation. |
| AEC-Q101 qualification | Validated for automotive electronics use - includes HTOL, TC, UHAST, and ESD testing per JEDEC standards. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during clamping, reducing stress on downstream MOSFETs and interface ICs. |
| Matte tin plating & J-STD-002 compliance | Ensures solderability and intermetallic formation control for automated assembly in high-volume production. |
Applications
| Automotive Body Control Module | Industrial 24 V Sensor Interface |
|---|---|
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against battery line transients in door modules and lighting controls. IC Role / Device Role / Timing Role: Uni-directional TVS placed between 24 V supply rail and ground, clamping negative-going spikes and positive load-dump surges. Use Value: Limits voltage to ≤48.4 V during 10 A surges, preventing latch-up or gate oxide damage in 5 V logic and CAN/LIN PHYs. |
Use Scenario: Guarding analog front-end inputs of pressure/temperature sensors powered from 24 V industrial supplies subject to inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on sensor VDD line, positioned upstream of LDO regulators and signal conditioning op-amps. Use Value: Fast <1 ns response and 30 V VWM prevent false triggering while suppressing >1 kV transients per IEC 61000-4-4. |
| DC Power Input Stage (24 V) | Motor Drive Gate Driver Supply |
Use Scenario: Input protection for DIN-rail mounted PLC power supplies exposed to field wiring surges and lightning-induced coupling. IC Role / Device Role / Timing Role: First-line TVS on main 24 V input, coordinated with MOVs and fuses to divert energy before reaching rectifier and filter stage. Use Value: 500 W PPPM and 70 A IFSM enable coordination with 10 A slow-blow fuses and sustain repeated 200 V/10 A transients. |
Use Scenario: Clamping of isolated 15 V gate driver supply rails in BLDC motor inverters, where bootstrap circuitry is vulnerable to shoot-through induced spikes. IC Role / Device Role / Timing Role: Uni-directional clamp referenced to local ground, protecting high-side gate driver ICs from VGS overstress during Miller plateau transitions. Use Value: Tight VBR tolerance (±5 %) ensures consistent turn-on across temperature, avoiding premature conduction during PWM edge ringing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30AHE3/A | Same DO-214AC (SMA) package; 30 V VWM, 48.4 V VC @ 10 A, but 400 W PPPM (vs. 500 W). | Lower power rating limits suitability for automotive load dump; better for space-constrained PCBs where SMA footprint is preferred. | Select SMAJ30AHE3/A only if board layout favors surface-mount and surge requirements are ≤400 W. |
| 1.5KE30A | DO-201AD package; 30 V VWM, 49.9 V VC @ 11.5 A, 1500 W PPPM, but not AEC-Q101 qualified. | Higher power handling suits industrial AC/DC front-ends; lacks automotive qualification and tighter VBR tolerance. | Choose 1.5KE30A for cost-sensitive non-automotive designs requiring higher surge margin, but verify qualification needs. |
Compared with SMAJ30AHE3/A and 1.5KE30A, SA30HE3/54 uniquely combines AEC-Q101 qualification, 500 W pulse rating, and DO-15 through-hole robustness - making it optimal for automotive and harsh-environment industrial power rail protection where reliability and legacy assembly compatibility are essential.
Availability
SA30HE3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial 24 V sensor systems, and DC power input protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for SA30HE3/54 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SAxxA series is engineered for transient overvoltage protection in automotive, industrial, and telecom infrastructure - delivering precise clamping, high surge endurance, and qualification-grade consistency across temperature and life cycles.
FAQ
What is the clamping voltage of SA30HE3/54 at 10 A peak pulse current?
The SA30HE3/54 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 under standardized test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SA30HE3/54 maintains this clamping performance across its full operating temperature range.
Is SA30HE3/54 qualified for automotive applications?
Yes, SA30HE3/54 is AEC-Q101 qualified, confirming its suitability for automotive electronic systems. The HE3 suffix denotes RoHS compliance and AEC-Q101 qualification, covering tests such as high-temperature operating life, temperature cycling, and ESD. This makes SA30HE3/54 appropriate for under-hood and body-control applications where reliability under thermal and mechanical stress is critical.
What package type does SA30HE3/54 use, and what are its key mechanical features?
SA30HE3/54 uses the DO-204AC (DO-15) axial-leaded package with molded epoxy housing rated UL 94 V-0. Its leads are matte tin-plated and compliant with J-STD-002 for solderability. The device measures 1.0 inch minimum length with 0.104–0.140 inch diameter, and features a cathode band for polarity identification - supporting both manual and automated through-hole assembly processes.
How does the breakdown voltage tolerance of SA30HE3/54 affect circuit design?
The SA30HE3/54 has a VBR range of 33.3 V to 36.8 V at 1 mA test current, corresponding to ±5 % tolerance. This tight specification ensures predictable turn-on behavior, allowing designers to confidently set VWM at 30 V while maintaining sufficient margin above normal operating voltage and below the clamping threshold. It reduces risk of nuisance conduction in 24 V systems with ripple or tolerance stack-up.
Can SA30HE3/54 be used in bi-directional protection configurations?
No, SA30HE3/54 is a uni-directional TVS diode, intended for protection of DC rails with defined polarity. For bi-directional applications - such as AC lines or differential data buses - a CA-suffixed variant like SA30CA must be used. The SA30HE3/54's cathode band indicates polarity, and reverse connection would result in forward conduction and potential failure under normal bias.
SA30HE3/54 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:
- -
- 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)
SA30HE3/54 FAQ
1.How can I place an order for SA30HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA30HE3/54 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 SA30HE3/54 reliable?
The price and inventory of SA30HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA30HE3/54 is usually 5 days.
3.What payment methods are accepted for SA30HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA30HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA30HE3/54?
SA30HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA30HE3/54 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 SA30HE3/54?
For technical support, including SA30HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA30HE3/54 requirements.
6.How does Aetrix verify that SA30HE3/54 is sourced from the original manufacturer or authorized distributors?
All SA30HE3/54 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 SA30HE3/54 meets industry standards.
7.What is the process for return or replacement of SA30HE3/54?
All SA30HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA30HE3/54, 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 SA30HE3/54 part is unused and in its original packaging.
Return procedure for SA30HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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