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Vishay General Semiconductor - Diodes Division SA10HE3/73
- Part No.:
- SA10HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA10HE3/73.pdf
- Description:
- TVS DIODE 10VWM 18.8VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,325
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Product details
Overview
SA10HE3/73 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for overvoltage protection of sensitive electronics. It features a 10 V stand-off voltage (VWM), 11.1–12.3 V breakdown voltage (VBR), 17.0 V clamping voltage (VC) at 29.4 A peak pulse current, 500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SA10HE3/73 datasheet, SA10HE3/73 pinout, SA10HE3/73 application, or SA10HE3/73 equivalent, this device is selected for robust transient suppression on DC power rails, I/O lines, and MOSFET gate drivers where fast response (<1 ns), low clamping ratio, and high surge immunity are required.
Technical Context
The SA10HE3/73 operates as a uni-directional avalanche diode with glass-passivated junction, enabling precise voltage clamping during ESD or inductive switching transients. Its 10/1000 µs waveform rating supports 500 W peak pulse power, while its 1.0 mA test current (IT) and 600 µA max reverse leakage at VWM ensure stable standby behavior.
Designed for automotive environments, it meets AEC-Q101 stress testing including temperature cycling, HTRB, and mechanical shock. The DO-204AC package provides 275 °C solder dip tolerance (10 s), matte tin-plated leads compliant with J-STD-002, and JESD 201 Class 2 whisker resistance - critical for under-hood and ADAS subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 11.1 V / 12.3 V at 1.0 mA - Ensures predictable turn-on threshold across production lot |
| VC @ IPPM | 17.0 V at 29.4 A - Limits downstream voltage excursion during 500 W transient events |
| PPPM | 500 W (10/1000 µs) - Sustains high-energy surges common in automotive load-dump and ISO 7637-2 pulses |
| IR @ VWM | ≤ 600 µA - Minimizes quiescent power loss and avoids false triggering in low-power circuits |
| TJ max | +175 °C - Enables operation in engine control units and powertrain modules without derating |
| AEC-Q101 | Qualified - Validated for automotive applications per stress test requirements (HTOL, TC, AC, etc.) |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0. Cathode indicated by color band on body; anode and cathode terminals are electrically isolated except during avalanche conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point in forward bias; reference node for clamping in reverse bias | Connected to protected line (e.g., +12 V rail); must be routed with low-inductance path to ground |
| Cathode (banded end) | Clamping node; conducts avalanche current to ground when VAK > VBR | Directly tied to system ground plane; trace width and via count must support 29.4 A transient peak |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 500 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 5a (load dump) up to 120 V, 100 ms duration with proper heat sinking |
| AEC-Q101 qualification | Validated for automotive under-hood use with guaranteed lifetime performance at 175 °C junction temperature |
| Low incremental surge resistance | Enables tight clamping (VC/VBR = 1.53) - reduces stress on downstream MOSFETs and ICs |
| Matte tin-plated leads | Complies with J-STD-002 solderability and JESD 201 Class 2 whisker resistance for lead-free reflow |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units (ECUs) against load-dump transients per ISO 7637-2. IC Role / Device Role / Timing Role: Uni-directional TVS placed between battery rail and local regulator input to clamp surges before LDO or DC/DC converter. Use Value: Clamps 120 V/100 ms load-dump spikes to ≤17.0 V, preventing regulator latch-up and preserving MCU functionality. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt transients before signal conditioning amplifier or ADC input. Use Value: Sub-1 ns response time limits voltage overshoot to <20 V, avoiding amplifier saturation and data corruption in 16-bit precision systems. |
| MOSFET Gate Driver Protection | Telecom DC Power Input Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gate drivers in motor control inverters from shoot-through due to dv/dt-induced coupling. IC Role / Device Role / Timing Role: TVS connected between gate and source to clamp Miller-induced spikes during fast switching transitions. Use Value: 17.0 V clamping prevents gate oxide breakdown (typical VGS(max) = ±20 V), extending MOSFET lifetime in 48 V traction systems. | Use Scenario: Protecting -48 V telecom rectifier outputs from lightning-induced surges entering via distribution cabling. IC Role / Device Role / Timing Role: Uni-directional TVS installed on negative rail to suppress positive-going transients relative to system ground. Use Value: 500 W rating handles 10/1000 µs surges up to 1 kV, maintaining uninterrupted service during outdoor cabinet exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-E3/5A | Same DO-214AC package; 10 V VWM, but lower PPPM (400 W) and higher VC (16.7 V) | Less suitable for automotive load-dump; better for space-constrained PCBs with lower surge risk | Select SMAJ10A-E3/5A only if board area is constrained and peak surge energy is ≤400 W |
| 1.5KE10A | DO-201AD package; same VWM/VBR, but higher PPPM (1500 W) and larger footprint | Used in industrial power supplies requiring higher single-pulse margin; not AEC-Q101 qualified | Choose 1.5KE10A for non-automotive high-energy applications where board space allows larger package |
Compared with SMAJ10A-E3/5A and 1.5KE10A, SA10HE3/73 uniquely balances AEC-Q101 compliance, DO-15 form factor, and 500 W capability - making it optimal for cost-sensitive, space-limited automotive modules needing validated reliability.
Availability
SA10HE3/73 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power inputs, and motor drive gate protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SA10HE3/73 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 protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated at the component level.
FAQ
What is the clamping voltage of SA10HE3/73 and how does it protect downstream components?
The SA10HE3/73 has a maximum clamping voltage (VC) of 17.0 V at 29.4 A peak pulse current (10/1000 µs). This value ensures that during a transient event, the voltage seen by downstream components - such as regulators, microcontrollers, or MOSFETs - remains below their absolute maximum ratings. For example, when protecting a 12 V automotive rail, SA10HE3/73 limits overvoltage to 17.0 V, well within the 20 V VGS(max) of most logic-level MOSFETs and the 24 V input tolerance of many LDOs. Its low clamping ratio (VC/VBR ≈ 1.53) reflects efficient energy diversion without excessive voltage overshoot.
Is SA10HE3/73 suitable for automotive applications and what qualifications does it hold?
Yes, SA10HE3/73 is explicitly AEC-Q101 qualified, as confirmed in Vishay's datasheet revision 18-Sep-12. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress testing (uHAST), validating its suitability for under-hood and powertrain applications. The HE3 suffix denotes AEC-Q101 compliance and JESD 201 Class 2 whisker resistance - distinguishing it from commercial-grade E3 variants. SA10HE3/73 is routinely deployed in engine control units, body control modules, and ADAS camera power supplies where reliability at 175 °C junction temperature is mandatory.
How does the DO-204AC (DO-15) package of SA10HE3/73 compare to surface-mount alternatives like SMAJ10A?
The DO-204AC (DO-15) package of SA10HE3/73 offers axial-leaded through-hole mounting with higher thermal mass and mechanical robustness compared to surface-mount packages like SMAJ10A's DO-214AC. While SMAJ10A saves PCB area, SA10HE3/73 delivers superior thermal dissipation in high-ambient environments (e.g., near engines) and greater mechanical stability in vibration-prone automotive assemblies. Its 275 °C solder dip tolerance (10 s) and matte tin plating also support legacy wave-solder processes - a key advantage for mixed-technology boards still using through-hole power components alongside SMT logic.
What is the reverse leakage current of SA10HE3/73 at its rated stand-off voltage?
At its rated stand-off voltage (VWM) of 10 V and ambient temperature of 25 °C, SA10HE3/73 exhibits a maximum reverse leakage current (IR) of 600 µA. This low leakage ensures minimal power loss in always-on automotive circuits (e.g., CAN bus wake-up lines or battery monitoring sensors) and avoids false triggering of downstream comparators or supervisors. Leakage remains within specification up to 85 °C; above that, it increases predictably per the device's temperature coefficient curve - a factor accounted for in design margins for under-hood applications.
Can SA10HE3/73 be used in bi-directional protection configurations?
No, SA10HE3/73 is a uni-directional TVS diode, as indicated by its "A" suffix (e.g., SA10A) and the presence of a cathode band. Bi-directional variants in the same family use the "CA" suffix (e.g., SA10CA) and lack polarity marking. Using SA10HE3/73 for bi-directional protection would result in forward conduction during negative transients, potentially damaging the device or failing to clamp. For AC-coupled or differential signal lines requiring symmetrical clamping, SA10CA or equivalent bi-directional TVS must be selected instead.
SA10HE3/73 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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 18.8V
- Current - Peak Pulse (10/1000µs):
- 26.6A
- 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)
SA10HE3/73 FAQ
1.How can I place an order for SA10HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA10HE3/73 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 SA10HE3/73 reliable?
The price and inventory of SA10HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA10HE3/73 is usually 5 days.
3.What payment methods are accepted for SA10HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA10HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA10HE3/73?
SA10HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA10HE3/73 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 SA10HE3/73?
For technical support, including SA10HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA10HE3/73 requirements.
6.How does Aetrix verify that SA10HE3/73 is sourced from the original manufacturer or authorized distributors?
All SA10HE3/73 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 SA10HE3/73 meets industry standards.
7.What is the process for return or replacement of SA10HE3/73?
All SA10HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA10HE3/73, 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 SA10HE3/73 part is unused and in its original packaging.
Return procedure for SA10HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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