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Vishay General Semiconductor - Diodes Division SA30CHE3/73
- Part No.:
- SA30CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA30CHE3/73.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,623
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Product details
Overview
SA30CHE3/73 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on signal or power lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1 mA, 48.4 V maximum clamping voltage (VC) at 10 A peak pulse current, and 500 W peak pulse power rating with 10/1000 μs waveform. It is AEC-Q101 qualified and RoHS compliant, used in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the SA30CHE3/73 datasheet, SA30CHE3/73 pinout, SA30CHE3/73 application, or SA30CHE3/73 equivalent, this page delivers verified electrical parameters, mechanical package details, real-world use cases, and validated alternative parts - all specific to the SA30CHE3/73 bi-directional TVS diode without inference or generic assumptions.
Technical Context
The SA30CHE3/73 operates as a bi-directional avalanche diode, symmetrically clamping transient overvoltages in both polarities. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while its 175 °C maximum junction temperature supports under-hood automotive deployment.
It responds within picoseconds to ESD and lightning-induced surges, delivering consistent clamping performance across -55 °C to +175 °C. The device's low incremental surge resistance and fast response time enable effective protection of downstream MOSFETs, microcontrollers, and analog front-ends without adding latency or signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during transients. |
| VC @ IPPM | 48.4 V at 10 A - Clamped voltage seen by protected IC during worst-case 10/1000 μs surge; limits stress on downstream components. |
| PPPM | 500 W - Peak pulse power handling capability; sustains high-energy transients without failure under defined waveform. |
| IPPM | 10 A - Maximum non-repetitive peak pulse current supported; determines survivability against IEC 61000-4-5 Level 4 surges. |
| TJ max. | +175 °C - Maximum junction temperature; enables placement near heat sources in automotive and industrial environments. |
| Leakage (ID) | ≤1.0 μA at 30 V - Ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0. Bi-directional configuration has no polarity marking; terminals are non-polarized and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both leads serve identical roles; bidirectional clamping occurs regardless of voltage polarity applied across terminals. |
| Lead 1 / Lead 2 | Connection interface | Matte tin-plated, solderable per J-STD-002; supports wave/solder dip (275 °C, 10 s max); no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for engine control and ADAS sensor modules. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal stress and humidity exposure. |
| 500 W peak pulse power (10/1000 μs) | Withstands high-energy transients common in 12 V/24 V vehicle systems and industrial PLC I/O ports without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage overshoot during clamping - critical for protecting 3.3 V or 5 V logic-level interfaces. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance; eliminates tin whisker risk in high-reliability, long-lifecycle applications. |
Applications
| Automotive Sensor Protection | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point to shunt transients before reaching sensitive ASICs. Use Value: Limits clamped voltage to 48.4 V during 10 A surge, preventing latch-up or gate oxide damage in 3.3 V/5 V sensor signal chains. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary transient suppression element on each channel, mounted adjacent to terminal block to minimize inductance. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) up to Level 4 without external RC snubbers. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485/RS-232 transceivers in base station backhaul equipment from lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: First-line bi-directional TVS on differential pair inputs, paired with common-mode chokes. Use Value: Delivers sub-1 ns response and <1.0 μA leakage at 30 V, preserving signal integrity and minimizing standby power loss. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Across-the-rail clamp on motor driver H-bridge supply rails to absorb inductive kickback energy. Use Value: Handles repetitive 500 W pulses without derating at ambient ≤85 °C, extending system MTBF in thermally constrained enclosures. |
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-E3/57 | Uni-directional; 30 V VWM, 33.3–36.7 V VBR, same DO-214AC package but surface-mount; lower IPPM (11.7 A vs. 10 A). | Requires polarity-aware layout; not suitable where AC-coupled or floating signals demand symmetry. | Select when board space is constrained and unidirectional protection suffices with PCB-level polarity control. |
| 1.5KE30CA | Higher PPPM (1500 W), larger DO-201AD package; VC = 48.4 V at 31 A; same bi-directional function and VWM. | Bulkier footprint and higher thermal mass; suited for higher-energy surge zones like main power entry. | Choose for primary-level protection where higher surge margin is needed and DO-204AC size is insufficient. |
Compared with SMAJ30A-E3/57 and 1.5KE30CA, the SA30CHE3/73 offers AEC-Q101 qualification and DO-204AC axial form factor ideal for through-hole sensor harness interfaces, while maintaining identical clamping voltage and tighter VBR tolerance than the 1.5KE series.
Availability
SA30CHE3/73 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer appliance motor drivers requiring stable component supply across extended production lifecycles.
Supply support for SA30CHE3/73 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, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The SAxxCH series targets high-reliability transient suppression in harsh environments, with design focus on AEC-Q101 compliance, low clamping ratio, and robust thermal performance for under-hood and factory-floor applications.
FAQ
What is the polarity configuration of the SA30CHE3/73?
The SA30CHE3/73 is a bi-directional TVS diode with symmetrical terminals and no polarity marking. Both leads function identically, enabling clamping of positive and negative transients without regard to orientation during PCB assembly or wiring. This eliminates risk of incorrect installation in AC-coupled or floating signal paths.
Is SA30CHE3/73 suitable for automotive applications?
Yes, the SA30CHE3/73 carries AEC-Q101 qualification and is rated for operation from -55 °C to +175 °C. Its glass-passivated junction, low leakage, and DO-204AC mechanical robustness make it appropriate for engine control units, body electronics, and ADAS sensor interfaces where transient immunity and long-term reliability are mandatory.
What is the maximum clamping voltage of SA30CHE3/73 under surge conditions?
The SA30CHE3/73 exhibits a maximum clamping voltage (VC) of 48.4 V at 10 A peak pulse current with a 10/1000 μs waveform. This value is measured and guaranteed per Vishay Document Number 88378, ensuring predictable overvoltage limiting for downstream 3.3 V or 5 V logic circuits.
Does SA30CHE3/73 meet RoHS and lead-free requirements?
Yes, the HE3 suffix denotes RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. The device complies with Directive 2011/65/EU and is halogen-free per JEDEC JS709A, confirmed in Vishay's material categorization documentation.
How does SA30CHE3/73 differ from the uni-directional SA30A variant?
The SA30CHE3/73 is bi-directional with no cathode marking and symmetrical clamping in both polarities, whereas SA30A is uni-directional with a cathode band and only clamps reverse-biased transients. SA30CHE3/73 supports AC signal lines and floating grounds; SA30A requires correct polarity alignment and cannot suppress positive-going surges on anode-connected nodes.
SA30CHE3/73 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:
- -
- Bidirectional Channels:
- 1
- 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)
SA30CHE3/73 FAQ
1.How can I place an order for SA30CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA30CHE3/73 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 SA30CHE3/73 reliable?
The price and inventory of SA30CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA30CHE3/73 is usually 5 days.
3.What payment methods are accepted for SA30CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA30CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA30CHE3/73?
SA30CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA30CHE3/73 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 SA30CHE3/73?
For technical support, including SA30CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA30CHE3/73 requirements.
6.How does Aetrix verify that SA30CHE3/73 is sourced from the original manufacturer or authorized distributors?
All SA30CHE3/73 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 SA30CHE3/73 meets industry standards.
7.What is the process for return or replacement of SA30CHE3/73?
All SA30CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA30CHE3/73, 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 SA30CHE3/73 part is unused and in its original packaging.
Return procedure for SA30CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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