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Vishay General Semiconductor - Diodes Division SA17CHE3/54
- Part No.:
- SA17CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA17CHE3/54.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,712
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Product details
Overview
SA17CHE3/54 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 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 μs), 5.7 A peak pulse current (IPPM), and 87.1 V maximum clamping voltage (VC) - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits.
For engineers reviewing the SA17CHE3/54 datasheet, SA17CHE3/54 pinout, SA17CHE3/54 application, or SA17CHE3/54 equivalent, this part serves as an AEC-Q101-qualified, RoHS-compliant, bi-directional TVS for automotive and industrial surge protection where bidirectional clamping and low leakage (<1.0 μA at VWM) are required.
Technical Context
This device operates as a bi-directional avalanche diode with symmetrical breakdown behavior in both polarities, enabling transient suppression on AC-coupled or floating lines without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, critical for consistent clamping under repetitive 10/1000 μs surges at 0.01 % duty cycle.
The SA17CHE3/54 is rated for TJ = –55 °C to +175 °C operation and supports soldering per J-STD-002/JESD 22-B102. Its DO-204AC package provides mechanical robustness and UL 94 V-0 flammability compliance, while the HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (min/max) | 60.0 V / 66.3 V at 1.0 mA - Ensures reliable, repeatable avalanche conduction onset across temperature and unit variation. |
| IPPM | 5.7 A (10/1000 μs) - Peak current it safely shunts during standardized surge events without degradation. |
| VC | 87.1 V - Clamped voltage seen by downstream components during IPPM; determines minimum withstand rating of protected ICs. |
| PPPM | 500 W - Surge energy handling capacity under defined waveform; enables protection against IEC 61000-4-5 Level 3/4 threats. |
| ID @ VWM | <1.0 μA - Ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance nodes. |
| TJ max | +175 °C - Enables deployment in under-hood automotive or high-temperature industrial environments without derating. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case with matte tin-plated leads. Bi-directional construction means no polarity marking; terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (either lead) | Bi-directional avalanche junction terminal | Either lead may connect to line or ground; identical clamping behavior in both directions eliminates orientation constraints during placement. |
| Case | Non-conductive epoxy body | Provides electrical isolation, mechanical strain relief, and UL 94 V-0 flame resistance; no thermal pad or metal tab. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces per stress test requirements. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage performance across thermal cycling and humidity exposure. |
| 500 W peak pulse power (10/1000 μs) | Supports robust protection against lightning-induced surges and inductive switching transients in industrial PLCs and motor drives. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream components compared to higher-ratio suppressors, improving system reliability. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and EU RoHS Directive 2011/65/EU, suitable for automotive and medical-adjacent systems. |
Applications
| Automotive Sensor Interface Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between signal line and chassis ground to limit transient excursions within IC absolute maximum ratings. Use Value: Withstands 500 W surges while clamping to 87.1 V, ensuring protected transceivers survive ISO 7637-2 Pulse 5a without latch-up or damage. |
Use Scenario: Safeguarding programmable logic controller (PLC) digital input modules connected to 24 V DC field wiring exposed to relay coil kickback and lightning coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across input terminals to shunt fast transients before they reach optocoupler or MCU GPIO pins. Use Value: 54 V VWM allows normal 24 V operation with margin; 87.1 V VC ensures downstream 100 V-rated optocouplers remain within safe operating area. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHY magnetics from induced surges on building-wiring runs in security or HVAC control systems. IC Role / Device Role / Timing Role: Bi-directional TVS mounted at connector entry point to absorb common-mode transients before entering differential receiver circuitry. Use Value: Symmetrical clamping prevents signal inversion or DC offset shift during surge events, preserving data integrity on bidirectional communication lines. |
Use Scenario: Suppressing inductive spikes generated by brushed DC motors in washing machines, vacuum cleaners, and power tools. IC Role / Device Role / Timing Role: Clamp placed across motor terminals or H-bridge outputs to divert back-EMF energy away from driver ICs and MCU power rails. Use Value: 175 °C max junction temperature and 500 W rating enable sustained operation in thermally constrained appliance enclosures without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54CA | Same VWM (54 V), same DO-214AC package, but lower PPPM (400 W) and higher VC (93.6 V); not AEC-Q101 qualified. | Less suited for automotive under-hood use due to lower surge rating and absence of automotive qualification. | Select SMAJ54CA only for cost-sensitive commercial applications where 400 W surge immunity suffices and AEC-Q101 is not mandated. |
| 1.5KE54CA | Higher PPPM (1500 W), larger DO-201AD package, same VWM/VC specs; RoHS-compliant but not AEC-Q101 qualified. | Requires PCB layout change due to larger footprint and higher thermal mass; better for high-energy industrial surges. | Choose 1.5KE54CA when protecting high-inductance loads (e.g., solenoids, transformers) where >500 W surge capability is essential. |
Compared with SMAJ54CA and 1.5KE54CA, the SA17CHE3/54 uniquely combines AEC-Q101 qualification, DO-204AC compactness, and precise 500 W/87.1 V clamping-making it optimal for space-constrained, automotive-grade designs where reliability and regulatory compliance are non-negotiable.
Availability
SA17CHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line conditioning requiring stable component supply and full traceability.
Supply support for SA17CHE3/54 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, and protection devices with emphasis on reliability, efficiency, and automotive-grade validation.
The SAxxCH series delivers AEC-Q101-qualified, bi-directional TVS diodes optimized for harsh-environment transient suppression in automotive electronics, industrial controls, and infrastructure equipment.
FAQ
What is the polarity configuration of the SA17CHE3/54?
The SA17CHE3/54 is a bi-directional TVS diode with symmetrical avalanche characteristics in both directions. It has no cathode marking and can be installed in either orientation - ideal for AC-coupled or floating signal lines where polarity is undefined or reversible.
Is the SA17CHE3/54 qualified for automotive applications?
Yes, the SA17CHE3/54 carries the HE3 suffix, confirming full AEC-Q101 qualification per stress test requirements including HTOL, TC, and HAST. It is approved for use in automotive powertrain, chassis, and body electronics where reliability under thermal and vibration stress is mandatory.
What does the "54" in SA17CHE3/54 signify?
The "54" in SA17CHE3/54 is the preferred package code indicating 13-inch paper tape and reel packaging with a base quantity of 4000 units. It does not denote electrical parameters - the "17" in SA17CHE3 identifies the 54 V VWM variant within the SAxxCH family.
How does the SA17CHE3/54 compare to uni-directional variants like SA17AHE3/54?
The SA17CHE3/54 differs from SA17AHE3/54 in polarity: SA17CHE3/54 is bi-directional (no band, symmetric clamping), while SA17AHE3/54 is uni-directional (cathode band marked, forward conduction allowed). Both share identical VWM, VBR, and PPPM, but only the "CA" version protects AC or bidirectional signals.
What is the maximum clamping voltage of the SA17CHE3/54 at its rated peak pulse current?
The SA17CHE3/54 exhibits a maximum clamping voltage (VC) of 87.1 V at its rated peak pulse current (IPPM) of 5.7 A under the standard 10/1000 μs waveform. This value is guaranteed per datasheet Table on page 2 and defines the upper voltage limit imposed on protected circuitry during surge events.
SA17CHE3/54 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 16.4A
- 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)
SA17CHE3/54 FAQ
1.How can I place an order for SA17CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA17CHE3/54 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 SA17CHE3/54 reliable?
The price and inventory of SA17CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA17CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA17CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA17CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA17CHE3/54?
SA17CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA17CHE3/54 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 SA17CHE3/54?
For technical support, including SA17CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA17CHE3/54 requirements.
6.How does Aetrix verify that SA17CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA17CHE3/54 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 SA17CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA17CHE3/54?
All SA17CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA17CHE3/54, 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 SA17CHE3/54 part is unused and in its original packaging.
Return procedure for SA17CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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