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Taiwan Semiconductor Corporation SA16A
- Part No.:
- SA16A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA16A.pdf
- Description:
- TVS DIODE 16VWM 26VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,656
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Product details
Overview
SA16A 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), 17.8–19.7V breakdown voltage (VBR), and 26.0V clamping voltage (VC) at 20A peak pulse current. It protects automotive and industrial power rails against ESD, EFT, and inductive switching transients.
For engineers reviewing the SA16A datasheet, SA16A pinout, SA16A application, or SA16A equivalent, key selection criteria include clamping performance under 10/1000μs surge, low leakage (<1μA @ 16V), AEC-Q101 qualification status, thermal derating above 25°C, and compatibility with lead-free reflow profiles per J-STD-002.
Technical Context
The SA16A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its VBR range (17.8–19.7V @ 1mA test current) to clamp transients to ≤26.0V at 20A. Its low dynamic impedance enables fast response (<1.0ps from 0V to VBR) and stable clamping across temperature (±17 mV/°C VBR tempco).
Designed for PCB-level protection of 12V–16V DC systems, it meets IEC 61000-4-2 (±30kV contact), IEC 61000-4-4 (±4kV), and ISO 7637-2 Pulse 1/2a/3a compliance when applied with appropriate series impedance. The DO-204AC package supports 3W steady-state dissipation at TL = 75°C on 10×10 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before conduction begins; sets system rail compatibility for 12V nominal circuits. |
| VBR min/max | 17.8 / 19.7 V @ 1 mA - Breakdown threshold range defining turn-on consistency; ensures reliable activation above normal operating voltage. |
| VC @ IPPM | 26.0 V @ 20 A - Clamped voltage during 10/1000μs surge; limits downstream IC stress to safe levels under worst-case transients. |
| PPK | 500 W - Peak pulse power handling per single non-repetitive event; validates robustness against ISO 7637-2 Pulse 5a surges. |
| IR @ VWM | <1 μA - Reverse leakage at rated stand-off voltage; minimizes standby power loss and avoids false triggering in high-impedance nodes. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| Package | DO-204AC (DO-15) - Industry-standard axial-leaded package with 0.400g mass, UL 94V-0 molding, and pure tin-plated leads. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, epoxy-molded, cathode band marked on one end. Lead spacing 5.0–5.5 mm, body diameter 2.5–3.0 mm, overall length 7.0–8.5 mm. Compliant with JESD201 Class 2 whisker resistance and RoHS/halogen-free (IEC 61249-2-21).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to ground or low-side return; carries surge current during clamping in unidirectional configuration. |
| Cathode (banded end) | Reverse-biased clamping node | Connected to protected line (e.g., 12V rail); initiates avalanche breakdown when transient exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option available | SA16AH variant meets automotive reliability requirements including temperature cycling, HTRB, and ESD testing per AEC standard. |
| Low clamping ratio (VC/VBR) | 1.31 typical (26.0V / 19.7V) - Enables tighter voltage margin between clamping level and IC absolute maximum ratings. |
| Sub-nanosecond response | <1.0 ps rise time from 0V to VBR - Ensures suppression before transient energy couples into sensitive analog or digital circuitry. |
| High surge current capability | 20 A peak pulse current (IPPM) at 10/1000μs - Supports protection of CAN, LIN, and sensor supply lines per ISO 7637-2. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - Required for automotive Tier 1 supply chain and green manufacturing programs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs, lighting modules, and body control units from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, acting as last-line voltage clamp during ISO 7637-2 Pulse 5a events. Use Value: Limits transient voltage to ≤26.0V, preventing damage to 30V-rated LDOs and microcontrollers while maintaining <1μA leakage during normal operation. | Use Scenario: Safeguarding 4–20mA current loop transmitters and analog sensor front-ends in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional-capable device used unidirectionally across sensor supply and return lines to absorb EFT bursts per IEC 61000-4-4. Use Value: Clamps 4kV EFT pulses to sub-30V levels within nanoseconds, preserving signal integrity without affecting 0.1% measurement accuracy. |
| LED Driver Surge Suppression | DC Motor Control Board Protection |
Use Scenario: Shielding constant-current LED drivers in streetlight and automotive headlamp systems from inductive kickback. IC Role / Device Role / Timing Role: Mounted across driver output terminals to shunt flyback energy from MOSFET switching transitions. Use Value: Absorbs 500W peak surges without degradation, enabling >100,000 switching cycles with no parameter drift due to its stable avalanche structure. | Use Scenario: Protecting H-bridge gate drivers and logic inputs in brushed DC motor controllers subjected to back-EMF spikes. IC Role / Device Role / Timing Role: Placed at motor power input to clamp reverse polarity and inductive transients before they reach driver ICs. Use Value: Withstands 70A non-repetitive forward surge (IFSM), ensuring survival during accidental short-circuit or stall conditions. |
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, 25.0V VC @ 19.9A; lower PPK (400W); higher IR (≤5μA @ 16V) | Lower surge rating limits use in high-energy automotive load dump; better suited for consumer-grade 12V peripherals. | Select SMAJ16A only if 400W peak power suffices and board space constraints favor surface-mount over axial DO-15. |
| P6KE16A | DO-204AC package; 16V VWM, 25.5V VC @ 19.6A; 600W PPK; higher VF (3.5V @ 35A); no AEC-Q101 option | Higher surge capacity supports harsher industrial transients; lacks automotive qualification and halogen-free certification. | Choose P6KE16A for cost-sensitive industrial designs requiring >500W margin but not requiring automotive qualification or green material compliance. |
Compared with SMAJ16A and P6KE16A, the SA16A delivers balanced 500W surge handling, ultra-low leakage, AEC-Q101 availability (as SA16AH), and halogen-free construction-making it optimal for automotive and high-reliability industrial designs where regulatory compliance and long-term stability are mandatory.
Availability
SA16A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED driver protection, and DC motor control applications requiring stable component supply, consistent parametric performance, and traceable sourcing.
Supply support for SA16A 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 Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and Zener diodes since 1979.
The SA Series was developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing low clamping voltage, AEC-Q101 qualification readiness, and halogen-free packaging.
FAQ
What is the maximum clamping voltage of the SA16A under standard 10/1000μs surge conditions?
The SA16A has a maximum clamping voltage (VC) of 26.0 V when subjected to a 20 A peak pulse current (IPPM) with a 10/1000μs waveform. This value is measured per IEC 61000-4-5 and ensures protected circuits remain below critical voltage thresholds during real-world transients such as load dump or EFT events.
Is the SA16A suitable for automotive applications requiring AEC-Q101 qualification?
The base SA16A is not AEC-Q101 qualified, but the SA16AH variant-identical in electrical parameters and DO-204AC packaging-is fully AEC-Q101 certified. Engineers specifying SA16A for automotive use should select SA16AH to meet OEM reliability and qualification requirements.
How does the SA16A's leakage current compare to similar 16V TVS diodes?
The SA16A exhibits reverse leakage current (IR) of less than 1 μA at its 16 V working stand-off voltage, which is significantly lower than alternatives like SMAJ16A (≤5 μA) and P6KE16A (≤5 μA). This ultra-low leakage reduces power loss in always-on systems and prevents false triggering in high-impedance monitoring circuits.
What is the thermal derating behavior of the SA16A above 25°C ambient?
The SA16A's peak pulse power (PPK) must be derated linearly above 25°C ambient per Figure 2 in the datasheet, reaching ~50% of 500W at 100°C. Its maximum junction temperature remains +175°C, enabling operation in under-hood environments when mounted on adequate copper area per JEDEC standards.
Can the SA16A be used in bidirectional configurations?
No-the SA16A is a unidirectional TVS diode, designed for polarity-specific clamping with cathode connected to the protected line. For bidirectional protection, the SA16CA variant (or SA16A's bipolar counterpart) must be used; mixing unidirectional and bidirectional types risks failure during reverse-polarity transients.
SA16A 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:
- 26V
- Current - Peak Pulse (10/1000µs):
- 20A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA16A FAQ
1.How can I place an order for SA16A through Aetrix?
Please submit a Request for Quotation (RFQ) for SA16A 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 SA16A reliable?
The price and inventory of SA16A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA16A is usually 5 days.
3.What payment methods are accepted for SA16A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA16A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA16A?
SA16A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA16A 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 SA16A?
For technical support, including SA16A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA16A requirements.
6.How does Aetrix verify that SA16A is sourced from the original manufacturer or authorized distributors?
All SA16A 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 SA16A meets industry standards.
7.What is the process for return or replacement of SA16A?
All SA16A units undergo pre-shipment inspection (PSI). If there is an issue with SA16A, 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 SA16A part is unused and in its original packaging.
Return procedure for SA16A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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