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Vishay General Semiconductor - Diodes Division SA5.0HE3/73
- Part No.:
- SA5.0HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA5.0HE3/73.pdf
- Description:
- TVS DIODE 5VWM 9.6VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,691
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Product details
Overview
SA5.0HE3/73 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 5.0 V stand-off voltage, 6.4–7.07 V breakdown at 10 mA, 500 W peak pulse power (10/1000 μs), and 54.3 A peak pulse current. It provides clamping protection for low-voltage DC power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SA5.0HE3/73 datasheet, SA5.0HE3/73 pinout, SA5.0HE3/73 application, or SA5.0HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping voltage behavior under surge, thermal derating curves, and direct replacement guidance for circuit-level ESD and load-dump protection design.
Technical Context
The SA5.0HE3/73 operates as a uni-directional avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to transient overvoltages. Its 5.0 V stand-off voltage enables compatibility with 3.3 V and 5 V logic systems, while its 9.2 V maximum clamping voltage at 54.3 A ensures safe voltage limiting during 10/1000 μs surges.
Designed per AEC-Q101, it supports automotive-grade reliability with operating junction temperature up to +175 °C, 70 A non-repetitive forward surge rating, and 600 μA max reverse leakage at VWM. The device uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse working voltage before conduction begins; sets minimum system operating margin for 5 V rail protection. |
| VBR (min/max) | 6.4 V / 7.07 V at 10 mA - Confirmed breakdown range ensures predictable turn-on across production lot; tight tolerance supports robust design margining. |
| VC @ IPPM | 9.2 V at 54.3 A - Clamping voltage during full-rated 500 W transient; defines worst-case voltage seen by protected IC during surge event. |
| PPPM | 500 W (10/1000 μs) - Peak pulse power handling capacity; validates suitability for ISO 7637-2 Pulse 1, 2a, and 5a automotive transients. |
| IFSM | 70 A (8.3 ms half-sine) - Forward surge rating confirms resilience against inductive kickback in relay or solenoid drive circuits. |
| TJ max | +175 °C - Maximum junction temperature enables operation in under-hood automotive environments without thermal derating penalties. |
| Qualification | AEC-Q101 qualified - Certified for automotive electronics use; includes stress testing for temperature cycling, HTRB, and UHAST. |
Pinout & Package
Package: DO-204AC (DO-15), molded epoxy case with UL 94 V-0 flammability rating. Cathode indicated by color band on body; anode is unmarked end. Leads are matte tin plated, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry / low-side connection | Connected to ground or lower-potential node in uni-directional clamp configuration; must be routed with low-inductance path for effective surge shunting. |
| Cathode (banded end) | Reverse-biased terminal / high-side connection | Connected to protected line (e.g., 5 V rail); avalanche conduction occurs when line voltage exceeds VBR, diverting surge current to ground via anode. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, repeatable avalanche characteristics over lifetime and temperature; eliminates surface degradation risks in humid or contaminated environments. |
| 500 W peak pulse power (10/1000 μs) | Supports compliance with ISO 16750-2 and SAE J1113-11 test levels for automotive load-dump and coupled transients without degradation. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, body electronics, and ADAS sensor modules requiring zero-failure field performance. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV), ensuring clamping remains within safe operating area of downstream ICs. |
| Matte tin plating, JESD 201 Class 2 whisker test | Prevents tin whisker growth in long-life automotive deployments; meets stringent interconnect reliability requirements for 15+ year service life. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V supply lines in engine control units (ECUs) exposed to ISO 7637-2 Pulse 5a (load dump up to 60 V). IC Role / Device Role / Timing Role: Uni-directional TVS placed between 5 V rail and chassis ground to clamp transients before they reach microcontroller LDOs or CAN transceivers. Use Value: Limits rail voltage to ≤9.2 V during 54.3 A surge, preventing latch-up or permanent damage to 5 V tolerant peripherals. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA transmitter outputs) in factory automation sensors subject to inductive switching noise. IC Role / Device Role / Timing Role: Placed across output terminals to suppress flyback spikes from nearby solenoid valves or motor drivers. Use Value: Clamps transients within <1 ns, preserving signal integrity and avoiding false triggering of downstream PLC input stages. |
| Consumer USB Port ESD Protection | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-level ESD protection on VBUS line of USB 2.0 ports in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Downstream TVS after primary polymer PTC, providing low-clamp backup for ±15 kV contact discharge events per IEC 61000-4-2. Use Value: Delivers 9.2 V clamping at 54.3 A, ensuring USB PHY ICs remain below absolute maximum ratings during multi-pulse ESD stress. | Use Scenario: Front-end surge suppression on 48 V DC power inputs of telecom base station line cards subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Used in series with higher-voltage TVS or MOVs to handle initial fast-edge energy before slower clamping elements engage. Use Value: Fast response and low dynamic impedance reduce let-through energy to downstream DC/DC converters, improving overall system surge survivability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0AHE3/5A | Same DO-214AC (SMA) package; identical VWM/VBR/VC specs but 400 W PPPM; lower surge current rating (43.4 A). | Lower power rating limits use in high-energy automotive load-dump scenarios; suitable for space-constrained consumer PCBs where 500 W is not required. | Select SMAJ5.0AHE3/5A only when board layout favors SMA footprint and system-level surge energy is confirmed ≤400 W. |
| 1N6104AHE3/54 | DO-204AL (DO-41) package; same VWM/VBR but higher VC (10.5 V); 500 W rating maintained; lead length affects thermal resistance. | Longer leads increase inductance, reducing high-frequency ESD effectiveness; better suited for lower-speed industrial power rails than automotive signal lines. | Choose 1N6104AHE3/54 when legacy DO-41 footprint compatibility is mandatory and thermal management via heatsinking is feasible. |
Compared with SMAJ5.0AHE3/5A and 1N6104AHE3/54, the SA5.0HE3/73 offers optimal balance of 500 W surge capability, DO-15 thermal performance, and AEC-Q101 validation-making it the preferred choice for new automotive and high-reliability industrial designs where both energy handling and qualification are critical.
Availability
SA5.0HE3/73 is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for SA5.0HE3/73 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 TVS devices with emphasis on reliability, efficiency, and application-specific optimization.
The SAxxA family was engineered specifically for automotive and industrial transient suppression, delivering AEC-Q101-qualified, high-power TVS diodes in standardized DO-204AC packages with tightly controlled clamping and thermal performance.
FAQ
What is the clamping voltage of the SA5.0HE3/73 at its rated peak pulse current?
The SA5.0HE3/73 has a maximum clamping voltage (VC) of 9.2 V at its rated peak pulse current (IPPM) of 54.3 A, measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on the protected circuit during a full-rated 500 W transient event, and is critical for verifying compatibility with the absolute maximum ratings of downstream ICs such as microcontrollers or CAN transceivers in the SA5.0HE3/73-protected system.
Is the SA5.0HE3/73 suitable for automotive applications?
Yes, the SA5.0HE3/73 is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, body electronics, and ADAS sensor modules. Its construction features glass-passivated junction, matte tin-plated leads meeting JESD 201 Class 2 whisker requirements, and guaranteed operation from –55 °C to +175 °C junction temperature-fully satisfying the environmental and reliability demands of under-hood and chassis-mounted automotive electronics using the SA5.0HE3/73.
How does the SA5.0HE3/73 differ from bi-directional variants like SA5.0CA?
The SA5.0HE3/73 is a uni-directional TVS diode with cathode marking and asymmetric conduction: it blocks reverse voltage up to 5.0 V and clamps positive transients above ~6.4 V, while conducting freely in forward bias. In contrast, SA5.0CA is bi-directional, offering symmetrical clamping for AC-coupled or floating lines. The SA5.0HE3/73 is intended for DC power rail protection where polarity is fixed, whereas SA5.0CA suits data lines or transformer-coupled interfaces requiring bidirectional surge suppression.
What is the maximum reverse leakage current for the SA5.0HE3/73 at its stand-off voltage?
The SA5.0HE3/73 exhibits a maximum reverse leakage current (ID) of 600 μA at its rated stand-off voltage (VWM) of 5.0 V and ambient temperature of 25 °C. This low leakage ensures minimal quiescent power loss in always-on automotive modules and avoids unintended loading of precision voltage references or high-impedance sensor inputs in systems utilizing the SA5.0HE3/73 for protection.
Can the SA5.0HE3/73 be used in parallel for higher surge current handling?
No, the SA5.0HE3/73 should not be paralleled without external balancing components due to inherent VBR mismatch (6.4–7.07 V), which causes uneven current sharing and potential thermal runaway. For higher surge capability, select a single higher-rated device such as SA6.0HE3/73 or SA7.0HE3/73-or consult Vishay's application note AN8002 for validated multi-device configurations using matched lots and ballast resistors with the SA5.0HE3/73.
SA5.0HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.6V
- Current - Peak Pulse (10/1000µs):
- 52.1A
- 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)
SA5.0HE3/73 FAQ
1.How can I place an order for SA5.0HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA5.0HE3/73 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 SA5.0HE3/73 reliable?
The price and inventory of SA5.0HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA5.0HE3/73 is usually 5 days.
3.What payment methods are accepted for SA5.0HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA5.0HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA5.0HE3/73?
SA5.0HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA5.0HE3/73 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 SA5.0HE3/73?
For technical support, including SA5.0HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA5.0HE3/73 requirements.
6.How does Aetrix verify that SA5.0HE3/73 is sourced from the original manufacturer or authorized distributors?
All SA5.0HE3/73 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 SA5.0HE3/73 meets industry standards.
7.What is the process for return or replacement of SA5.0HE3/73?
All SA5.0HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA5.0HE3/73, 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 SA5.0HE3/73 part is unused and in its original packaging.
Return procedure for SA5.0HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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