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Taiwan Semiconductor Corporation SA150
- Part No.:
- SA150
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA150.pdf
- Description:
- 500W, 185.5V, UNIDIRECTIONAL, TV
- Quantity:
- Payment:
- Shipping:
Inventory:7,385
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Product details
Overview
SA150 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 waveform, with 150V working stand-off voltage (VWM), 167–204V breakdown voltage (VBR), and 268V maximum clamping voltage (VC) at 1.9A peak pulse current - used for automotive lighting and ESD protection of 12V/24V system interfaces.
For engineers reviewing the SA150 datasheet, SA150 pinout, SA150 application, or SA150 equivalent, this page delivers verified electrical parameters, clamping behavior under surge conditions, thermal derating curves, AEC-Q101 qualification status, and direct alternatives for overvoltage protection in automotive and industrial control circuits.
Technical Context
The SA150 operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its VBR range (167–204V) to clamp transients while maintaining low dynamic impedance. Its fast response time (<1.0ps from 0V to VBR) ensures protection before sensitive downstream ICs experience overstress.
Designed for non-repetitive surge events per IEC 61000-4-5 and ANSI/IEEE C62.35, it sustains 175°C junction temperature and exhibits <1μA reverse leakage at 150V, enabling low-power standby compatibility in always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before conduction begins; defines system bus voltage compatibility (e.g., 12V/24V/48V rails with margin) |
| VBR @ IT=1mA | 167–204 V - Breakdown voltage range at 1mA test current; determines precise clamping onset threshold under defined bias |
| VC @ IPPM=1.9A | 268 V - Clamping voltage at 1.9A peak pulse current (10/1000μs); sets worst-case voltage seen by protected circuit during surge |
| PPK | 500 W - Peak pulse power rating at TA=25°C; defines single-event energy handling capability without failure |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments with minimal thermal derating |
| IR @ VWM | <1 μA - Reverse leakage current at 150V; ensures negligible standby power loss and signal integrity in high-impedance sensing paths |
| Package | DO-204AC (DO-15) - Industry-standard axial-leaded package with 0.400g mass, UL 94V-0 molding, and J-STD-002 solderable tin-plated leads |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking for unidirectional polarity. Leads are pure tin-plated, compliant with J-STD-002 solderability requirements and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to system ground or low-side reference; completes clamping loop during transient event |
| Cathode | Reverse-biased input / Surge injection point | Connected to protected line (e.g., LIN bus, sensor supply); conducts avalanche current when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and body electronics per stress test requirements |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage overshoot during surge, reducing risk of latch-up or gate oxide damage in protected MOSFETs or MCUs |
| Fast response time <1.0ps | Enables sub-nanosecond reaction to ESD events (IEC 61000-4-2), outperforming many polymer-based TVS solutions |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained automotive and industrial deployments |
| 175°C junction rating | Supports placement near heat sources (e.g., power relays, motor drivers) without thermal derating below rated PPK |
Applications
| Automotive LED Headlamp Driver Protection | Industrial CAN Bus Transceiver Interface |
|---|---|
Use Scenario: Protects LED driver ICs and MOSFETs from load-dump transients (ISO 7637-2 Pulse 5a) and inductive kickback in 24V headlamp systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24V rail and ground, clamping surges above 150V before they reach driver inputs. Use Value: Limits peak voltage to 268V at 1.9A, preventing permanent damage to 30V-rated gate drivers and ensuring compliance with OEM EMC immunity specs. |
Use Scenario: Shields CAN FD transceivers (e.g., TJA1057) from EFT bursts (IEC 61000-4-4) and coupling noise on vehicle wiring harnesses. IC Role / Device Role / Timing Role: Placed across CAN_H–GND and CAN_L–GND lines to absorb common-mode surges without distorting differential signaling. Use Value: Sub-1ns response ensures clamping occurs within first 5ns of EFT edge, preserving signal integrity and preventing bit errors at 5 Mbps CAN FD rates. |
| Smart Building Sensor Node Power Input | Industrial PLC Digital Input Protection |
Use Scenario: Guards 12V-powered environmental sensors (temperature, humidity) against lightning-induced surges entering via long field wiring. IC Role / Device Role / Timing Role: Mounted at PCB entry point on 12V input rail, acting as first-line defense before LDO regulators and MCU power domains. Use Value: With only 1μA leakage at 12V, it avoids loading battery-backed circuits while delivering 500W transient suppression per IEC 61000-4-5 Level 4. |
Use Scenario: Protects 24V DC digital input channels in programmable logic controllers from relay coil flyback and cross-wiring faults. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-input line to shunt inductive spikes from solenoid/valve drivers into chassis ground. Use Value: 268V clamping voltage ensures connected optocouplers (e.g., PC817) remain within safe reverse-voltage limits during 100V/1A transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ150A | Same DO-214AC package, 150V VWM, but bidirectional; VC = 243V @ 2.1A; 10% lower clamping voltage | Requires dual-direction protection; unsuitable where polarity-sensitive unidirectional clamping is mandated (e.g., DC power rails) | Select SMAJ150A only if bidirectional surge immunity (e.g., AC-coupled data lines) is required and board layout allows polarity-agnostic placement |
| ON Semiconductor 1.5KE150A | DO-201AD package; higher PPK = 1500W; VC = 243V @ 6.2A; larger footprint and thermal mass | Better suited for high-energy industrial surges; incompatible with DO-15 footprint and automated assembly reels | Choose 1.5KE150A when system-level surge testing exceeds IEC 61000-4-5 Level 4 and PCB space permits larger axial package |
Compared with SA150, SMAJ150A offers lower clamping voltage but lacks AEC-Q101 validation and requires bidirectional design consideration, while 1.5KE150A delivers triple the surge energy rating but demands mechanical redesign and requalification for automotive use.
Availability
SA150 is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC digital inputs, and smart building sensor node power supplies requiring stable component supply with AEC-Q101 assurance and DO-15 through-hole compatibility.
Supply support for SA150 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power devices since 1979.
The SA Series was developed specifically for automotive-grade transient suppression, emphasizing AEC-Q101 reliability, tight VBR tolerances, and robust clamping performance in harsh under-hood environments.
FAQ
What is the AEC-Q101 qualification status of the SA150?
The SA150 is AEC-Q101 qualified when ordered with the "H" suffix (e.g., SA150H). Standard SA150 parts are not AEC-Q101 certified; qualification applies only to units manufactured and tested per AEC-Q101 stress requirements, including HTGB, AC/DC life test, and temperature cycling. Always verify ordering code suffix before automotive deployment.
Does the SA150 have bidirectional capability?
No, the SA150 is a unidirectional TVS diode. It conducts only when cathode voltage exceeds anode voltage by ≥VBR (167–204V). For bidirectional protection, select SA150A (which is bidirectional) or consult the SA Series datasheet Table 1 for CA-suffixed variants. Polarity is marked by cathode band on the DO-15 package.
What is the maximum clamping voltage of the SA150 at 10/1000μs surge?
The SA150 has a maximum clamping voltage (VC) of 268 V at 1.9 A peak pulse current under the 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the highest voltage imposed on the protected circuit during a standardized surge event - critical for validating downstream component voltage ratings.
Can the SA150 be used in place of the SA150A?
No - SA150 and SA150A are functionally distinct: SA150 is unidirectional, SA150A is bidirectional. Substituting SA150 for SA150A will leave one polarity unprotected, risking device failure during negative-going transients. They share same VWM and PPK but differ in construction, marking, and conduction directionality.
What is the thermal derating behavior of the SA150 above 25°C ambient?
The SA150's peak pulse power (PPK) derates linearly above TA = 25°C per Figure 2 in the datasheet: at 75°C ambient, PPK drops to ~350W; at 125°C, it falls to ~175W. Derating follows the curve in SA Series Rev. L2105, and steady-state power dissipation (PD) is limited to 3W at TL = 75°C with specified copper pad layout.
SA150 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):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 268V
- Current - Peak Pulse (10/1000µs):
- 1.9A
- 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)
SA150 FAQ
1.How can I place an order for SA150 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA150 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 SA150 reliable?
The price and inventory of SA150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA150 is usually 5 days.
3.What payment methods are accepted for SA150?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA150 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA150?
SA150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA150 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 SA150?
For technical support, including SA150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA150 requirements.
6.How does Aetrix verify that SA150 is sourced from the original manufacturer or authorized distributors?
All SA150 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 SA150 meets industry standards.
7.What is the process for return or replacement of SA150?
All SA150 units undergo pre-shipment inspection (PSI). If there is an issue with SA150, 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 SA150 part is unused and in its original packaging.
Return procedure for SA150:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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