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Vishay General Semiconductor - Diodes Division SA16CHE3/73
- Part No.:
- SA16CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA16CHE3/73.pdf
- Description:
- TVS DIODE 16VWM 28.8VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,491
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Product details
Overview
SA16CHE3/73 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR), 26.0 V clamping voltage (VC) at 19.2 A peak pulse current, and 500 W peak pulse power with 10/1000 μs waveform. It protects signal lines and power rails in automotive sensor units and industrial control interfaces against ESD and inductive switching transients.
For engineers reviewing the SA16CHE3/73 datasheet, SA16CHE3/73 pinout, SA16CHE3/73 application, or SA16CHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, bi-directional symmetry, 175 °C max junction temperature, and DO-15 leaded package compatibility with wave-soldering and automated assembly.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both polarities, enabling robust surge suppression on AC-coupled or floating signal paths. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and low incremental surge resistance, critical for fast transient response under repetitive 0.01% duty cycle conditions.
The SA16CHE3/73 is specified for operation across –55 °C to +175 °C, with thermal derating above 25 °C ambient per Fig. 2 and steady-state power dissipation of 3.0 W at 75 °C lead temperature. It meets JESD 22-B102 solderability and JESD 201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 17.8 V / 19.7 V at 1.0 mA - Ensures reliable turn-on margin above VWM with tight production tolerance |
| VC @ IPPM | 26.0 V at 19.2 A - Limits downstream voltage stress during 10/1000 μs transients |
| PPPM | 500 W - Sustains high-energy surges typical of automotive load-dump or inductive kick events |
| TJ max | +175 °C - Enables use in under-hood automotive environments without thermal derating penalties |
| Leakage (ID) | ≤1.0 μA at 16 V - Minimizes standby power loss in battery-powered sensor nodes |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
DO-204AC (DO-15) molded epoxy package with matte tin-plated leads; bi-directional construction has no polarity marking. Leads meet J-STD-002 and JESD 22-B102 solderability standards; 275 °C max solder dip for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche terminals | No functional distinction-either end connects to protected line; clamps equally in both directions |
| Case | Non-conductive epoxy body | Provides mechanical protection and UL 94 V-0 flammability rating; no thermal or electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR and low leakage over lifetime and temperature extremes |
| 500 W peak pulse power (10/1000 μs) | Withstands high-energy transients common in 12 V automotive systems and industrial PLC I/O |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, ADAS sensors, and body electronics |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes voltage overshoot during surge events, protecting downstream CMOS inputs and analog front-ends |
| DO-204AC (DO-15) package | Enables drop-in replacement in legacy through-hole designs and supports automated insertion and wave soldering |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector entry point to shunt transients before reaching IC pins. Use Value: Prevents latch-up and gate oxide damage in 3.3 V/5 V interface ICs by limiting clamped voltage to 26.0 V during 19.2 A surges. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Bi-directional transient suppressor across isolated 24 V DC input lines to absorb inductive energy without polarity constraints. Use Value: Eliminates need for dual uni-directional devices, reducing BOM count and PCB area while maintaining 500 W surge handling. |
| Consumer Appliance Motor Control | Telecom Line Interface Protection |
Use Scenario: Shielding microcontroller GPIOs and optocoupler inputs in washing machine or HVAC control boards from brush motor commutation spikes. IC Role / Device Role / Timing Role: Primary surge clamp on low-voltage control rails sharing ground with noisy motor drivers. Use Value: Maintains system uptime by preventing reset corruption and flash memory corruption during repeated 10/1000 μs transients. | Use Scenario: Protecting Ethernet PHYs and DSL line drivers from lightning-induced surges on external-facing RJ-45 ports. IC Role / Device Role / Timing Role: First-stage protector on differential pairs, working in coordination with GDTs and series impedance. Use Value: Provides sub-100 ns response to fast-rising transients while meeting IEC 61000-4-5 Level 3 (1 kV/2 kV) requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16CA | Same VWM (16 V), lower PPPM (400 W), SMA package (SMT) | Requires PCB rework for surface-mount layout; lacks AEC-Q101 qualification | Select when space-constrained SMT design prioritizes footprint over automotive qualification |
| 1.5KE16CA | Same VWM (16 V), higher PPPM (1500 W), DO-201AD package (larger, axial) | Higher surge capacity but larger footprint and higher clamping voltage (25.6 V @ 58.3 A) | Select when legacy through-hole designs require >500 W capability and board space allows DO-201AD |
Compared with SMAJ16CA and 1.5KE16CA, the SA16CHE3/73 offers AEC-Q101 qualification in a compact DO-15 through-hole package with optimized clamping performance (26.0 V) for 12 V system interfaces-making it the preferred choice for automotive and industrial applications requiring proven reliability and ease of assembly.
Availability
SA16CHE3/73 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and consumer appliance motor control boards requiring stable component supply and long-term lifecycle support.
Supply support for SA16CHE3/73 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 passive components with emphasis on reliability and application-specific performance.
The SAxxCHx family delivers AEC-Q101-qualified, bi-directional TVS diodes optimized for automotive and industrial transient protection where robustness, tight parametric control, and DO-15 manufacturability are essential.
FAQ
What is the maximum clamping voltage of the SA16CHE3/73 under standard test conditions?
The SA16CHE3/73 has a maximum clamping voltage (VC) of 26.0 V at 19.2 A peak pulse current (IPPM) using the 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The SA16CHE3/73 maintains this clamping performance across its full operating temperature range.
Is the SA16CHE3/73 suitable for automotive applications?
Yes, the SA16CHE3/73 is AEC-Q101 qualified and explicitly designed for automotive use. Its 175 °C maximum junction temperature, glass-passivated junction, and DO-204AC package with matte tin leads meet stringent automotive reliability requirements. The SA16CHE3/73 is commonly deployed in engine control units, ADAS sensor interfaces, and body electronics for transient suppression.
Does the SA16CHE3/73 have polarity markings?
No, the SA16CHE3/73 is a bi-directional TVS diode and carries no polarity marking on its DO-204AC package. Its symmetrical avalanche structure allows installation in either orientation across protected lines. This eliminates orientation errors during manual or automated assembly and simplifies layout for AC-coupled or floating signal paths.
What is the leakage current specification for the SA16CHE3/73 at rated stand-off voltage?
The SA16CHE3/73 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage (VWM) of 16 V and 25 °C ambient temperature. This low leakage minimizes power loss in always-on circuits and prevents false triggering in high-impedance sensor interfaces. The SA16CHE3/73 maintains leakage below 5.0 μA up to 125 °C.
Can the SA16CHE3/73 be used in place of a uni-directional TVS like SA16A?
No-the SA16CHE3/73 is bi-directional and not a direct replacement for uni-directional types such as SA16A. While both share the same VWM (16 V), the SA16A has a cathode band and only clamps in reverse bias; substituting it for SA16CHE3/73 would leave forward-biased transients unprotected. The SA16CHE3/73 must be used where symmetrical clamping is required.
SA16CHE3/73 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 17.4A
- 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)
SA16CHE3/73 FAQ
1.How can I place an order for SA16CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA16CHE3/73 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 SA16CHE3/73 reliable?
The price and inventory of SA16CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA16CHE3/73 is usually 5 days.
3.What payment methods are accepted for SA16CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA16CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA16CHE3/73?
SA16CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA16CHE3/73 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 SA16CHE3/73?
For technical support, including SA16CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA16CHE3/73 requirements.
6.How does Aetrix verify that SA16CHE3/73 is sourced from the original manufacturer or authorized distributors?
All SA16CHE3/73 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 SA16CHE3/73 meets industry standards.
7.What is the process for return or replacement of SA16CHE3/73?
All SA16CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA16CHE3/73, 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 SA16CHE3/73 part is unused and in its original packaging.
Return procedure for SA16CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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