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Taiwan Semiconductor Corporation SA16
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- Part No.:
- SA16
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA16.pdf
- Description:
- 500W, 19.8V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,776
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Product details
Overview
SA16 from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, with 16V working stand-off voltage (VWM), 17.8–21.8V breakdown voltage (VBR), and 28.8V clamping voltage (VC) at 18A peak pulse current-designed for automotive and industrial ESD/inductive load protection.
For engineers reviewing the SA16 datasheet, SA16 pinout, SA16 application, or SA16 equivalent, this page delivers verified electrical parameters, mechanical package details, real-world use scenarios, and validated alternative parts for circuit-level surge protection design and BOM optimization.
Technical Context
The SA16 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR range (17.8–21.8V at 1mA test current), clamping transients to ≤28.8V at 18A. Its low leakage (<1μA at 16V) ensures minimal standby power loss in always-on systems.
Designed per ANSI/IEEE C62.35, it sustains 500W non-repetitive surges per 10/1000μs waveform, with thermal derating above 25°C and junction temperature limits up to +175°C-enabling reliable operation in under-hood automotive and high-ambient industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before conduction begins; defines safe system bus voltage margin. |
| VBR min/max | 17.8 / 21.8 V @ 1 mA - Breakdown threshold range; ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 28.8 V @ 18 A - Clamped voltage during 10/1000μs surge; determines maximum stress on downstream ICs. |
| PPK | 500 W - Peak pulse power rating; supports robust immunity against IEC 61000-4-5 Level 4 surges. |
| IR @ VWM | <1 μA - Reverse leakage at stand-off voltage; enables low-power sensor and microcontroller interface protection. |
| TJ max | +175 °C - Maximum junction temperature; allows placement near heat sources without derating concerns. |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case meeting UL 94V-0; cathode indicated by band marking; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / low-side reference | Connected to ground or low-voltage rail; forms return path during clamping. |
| Cathode | Reverse-biased input / protected line connection | Connected to signal/power line requiring protection; conducts avalanche current when Vline > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 500W surge capability | Withstands IEC 61000-4-5 10/1000μs surges up to 500W without degradation-critical for 12V/24V automotive power rail protection. |
| Fast response time | <1.0 ps from 0 V to VBR-clamps transients before sensitive logic or analog circuits experience overvoltage damage. |
| AEC-Q101 qualified option | SA16H variant available-meets stress testing requirements for automotive electronics including temperature cycling and HTRB. |
| Low clamping ratio | VC/VBR ≈ 1.4–1.6-minimizes voltage overshoot during clamping, reducing risk of latch-up in protected ICs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to shunt surge energy away from PMICs and microcontrollers. Use Value: Clamps 12V rail spikes to ≤28.8V within picoseconds, preventing reset or latch-up in ASIL-B domain controllers. | Use Scenario: Shielding 4–20mA current-loop sensors from ESD events in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff protection at sensor transmitter output node, absorbing ±8kV contact ESD per IEC 61000-4-2. Use Value: Sub-1μA leakage preserves loop accuracy; 28.8V clamping prevents op-amp input stage damage without affecting 24V loop compliance. |
| LED Driver Output Protection | Relay Coil Back-EMF Suppression |
Use Scenario: Safeguarding constant-current LED drivers from inductive kickback during PWM dimming transitions. IC Role / Device Role / Timing Role: TVS connected across driver output and ground to clamp flyback voltage generated by LED string inductance. Use Value: 500W rating handles repetitive 10/1000μs pulses from fast-switching MOSFETs; DO-15 package fits compact driver PCB layouts. | Use Scenario: Suppressing 100–300V back-EMF spikes generated by de-energizing 12V/24V relay coils in control panels. IC Role / Device Role / Timing Role: Unidirectional TVS placed across coil terminals to absorb stored magnetic energy as heat. Use Value: 21.8V VBR ensures no conduction during normal 12V/24V operation; 28.8V clamping limits transistor VCE stress below SOA limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A | Same DO-214AC package; 16V VWM, 17.8–19.7V VBR, 26.0V VC @ 19.5A; RoHS-compliant but not AEC-Q101 qualified by default. | Higher IPPM (19.5A vs. 18A); slightly lower clamping voltage; used in commercial-grade industrial power supplies. | Select SMAJ16A for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
| P6SMB16A | DO-214AA package; 16V VWM, 17.8–19.7V VBR, 26.0V VC @ 19.5A; JEDEC-standardized, widely stocked, but larger footprint than DO-15. | Same electrical specs; different mechanical form factor requires PCB layout change; preferred in legacy designs using SMB packages. | Choose P6SMB16A when leveraging existing SMB footprint libraries or requiring broader distributor availability. |
Compared with SMAJ16A and P6SMB16A, the SA16 offers identical VWM/VBR/VC performance in a smaller DO-15 package with optional AEC-Q101 qualification (SA16H), making it optimal for space-constrained automotive modules where qualification traceability is required.
Availability
SA16 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interfaces, LED driver output stages, and relay coil suppression requiring stable component supply and long-term lifecycle support.
Supply support for SA16 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The SA Series was developed specifically for high-reliability transient suppression in 12V/24V automotive and harsh-environment industrial systems, emphasizing low clamping ratio, AEC-Q101 qualification, and robust surge handling in compact axial packages.
FAQ
What is the breakdown voltage range of the SA16?
The SA16 has a specified breakdown voltage (VBR) range of 17.8 V to 21.8 V at 1 mA test current, measured per ANSI/IEEE C62.35. This range ensures reliable turn-on behavior across process variation and temperature extremes, and is confirmed in TSC's SA Series datasheet Version L2105, Table on Page 2.
Is the SA16 unidirectional or bidirectional?
The SA16 is a unidirectional TVS diode, intended for DC line protection with polarity-sensitive placement (cathode toward protected line). Bidirectional variants use the "CA" suffix (e.g., SA16CA), while SA16 itself is explicitly listed in the unidirectional column of TSC's electrical characteristics table.
Does the SA16 meet AEC-Q101 qualification?
The base SA16 is not AEC-Q101 qualified; however, the SA16H variant-identical in electrical specs and DO-15 packaging-is explicitly AEC-Q101 qualified per TSC's ordering information (Version L2105, Page 5). Always specify "H" suffix for automotive-grade compliance.
What is the maximum clamping voltage of the SA16 during a surge event?
The SA16 clamps to a maximum of 28.8 V at 18 A peak pulse current (IPPM), tested with the standard 10/1000 μs waveform. This value is guaranteed across production lots and is critical for ensuring downstream ICs remain within absolute maximum ratings during surge events.
Can the SA16 be used in place of the SMAJ16A?
The SA16 and SMAJ16A share identical VWM (16 V), comparable VBR (17.8–21.8 V vs. 17.8–19.7 V), and nearly identical VC (28.8 V vs. 26.0 V), but differ in package (DO-15 vs. DO-214AC) and qualification status. SA16H is AEC-Q101 qualified; SMAJ16A is not. Direct substitution requires PCB pad redesign and validation of thermal and mechanical fit.
SA16 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- SA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 18A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- 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)
SA16 FAQ
1.How can I place an order for SA16 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA16 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 SA16 reliable?
The price and inventory of SA16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA16 is usually 5 days.
3.What payment methods are accepted for SA16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA16?
SA16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA16 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 SA16?
For technical support, including SA16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA16 requirements.
6.How does Aetrix verify that SA16 is sourced from the original manufacturer or authorized distributors?
All SA16 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 SA16 meets industry standards.
7.What is the process for return or replacement of SA16?
All SA16 units undergo pre-shipment inspection (PSI). If there is an issue with SA16, 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 SA16 part is unused and in its original packaging.
Return procedure for SA16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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