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Taiwan Semiconductor Corporation SA100CH
- Part No.:
- SA100CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA100CH.pdf
- Description:
- 500W, 123.5V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,945
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Product details
Overview
SA100CH from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, with 100V working stand-off voltage (VWM), 111–136V breakdown voltage (VBR @ 1mA), and 179V maximum clamping voltage (VC) at 2.9A peak pulse current. It delivers AEC-Q101 qualification for automotive-grade surge immunity in power supply and interface protection circuits.
For engineers reviewing the SA100CH datasheet, SA100CH pinout, SA100CH application, or SA100CH equivalent, this page provides verified electrical parameters, clamping behavior under 10/1000μs transients, thermal derating curves, polarity marking guidance, and direct alternatives for ESD and inductive switching protection in automotive ECUs and industrial controllers.
Technical Context
The SA100CH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR range (111–136V), clamping transients to ≤179V at 2.9A. Its low leakage (<1μA @ 100V) ensures minimal standby power loss in high-impedance sensing paths.
Designed for 10/1000μs surge waveforms per IEC 61000-4-5, it sustains 500W non-repetitive peak pulse power with <1.0ps response time from 0V to VBR and junction temperature operation from –55°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC bias margin. |
| VBR @ 1mA | 111–136 V - Breakdown voltage range at 1mA test current; determines precise turn-on threshold tolerance. |
| VC @ IPPM | 179 V at 2.9 A - Clamped voltage during 10/1000μs surge; sets worst-case overvoltage seen by protected IC. |
| PPK | 500 W - Peak pulse power rating at TA = 25°C; defines single-event surge energy handling capability. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive environments. |
| IR @ VWM | <1 μA - Reverse leakage at rated stand-off voltage; ensures negligible current draw in always-on systems. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with cathode band marking; compatible with through-hole assembly and manual rework. |
Pinout & Package
DO-204AC (DO-15) package with axial leads: anode (unmarked end) and cathode (banded end). Polarity is marked via molded cathode band; no internal pin numbering applies-device functions as two-terminal bidirectional clamp only in CA-suffix variants; SA100CH is unidirectional and polarity-sensitive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked lead) | Forward current entry / reverse voltage reference node | Connected to circuit ground or low-side return path; must be tied to lowest potential point in protected line. |
| Cathode (banded lead) | Avalanche conduction terminal / transient shunt node | Connected to protected signal/power line; conducts surge current to ground when VLINE > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| 500W 10/1000μs surge rating | Withstands IEC 61000-4-5 Level 4 surges (4kV) without degradation when properly heatsinked. |
| <1.0ps response time (0V → VBR) | Engages before most microcontroller I/O pins can be damaged by fast-rising ESD or lightning-induced transients. |
| RoHS & halogen-free (IEC 61249-2-21) | Complies with automotive ELV and consumer electronics environmental directives without compromising surge robustness. |
| UL 94V-0 molding compound | Prevents flame propagation during catastrophic failure under sustained overvoltage conditions. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V/24V battery rail protection in engine control units against load dump and alternator transients. IC Role / Device Role: Primary clamping element placed between battery input and LDO/regulator input. Use Value: Limits transient voltage to ≤179V, preventing damage to downstream 3.3V/5V regulators and MCU power pins. | Use Scenario: 4–20mA current loop transmitter output stage exposed to field wiring ESD and inductive kickback. IC Role / Device Role: Line-side TVS connected between output and ground to shunt fast transients before reaching op-amp or DAC output stage. Use Value: Maintains signal integrity by clamping spikes within 1.0ps while adding <1μA leakage at 24V nominal operation. |
| LED Driver Overvoltage Clamp | USB-C Port ESD Suppression |
Use Scenario: Constant-current LED driver output subjected to inductive switching surges during hot-plug or cable disconnect events. IC Role / Device Role: Unidirectional TVS placed across LED string terminals to absorb reverse recovery energy. Use Value: Prevents LED open-circuit failure by clamping flyback voltages up to 500W without thermal runaway (TJ ≤ 175°C). | Use Scenario: USB-C CC and VBUS lines in automotive infotainment head units requiring IEC 61000-4-2 Level 4 ESD immunity. IC Role / Device Role: Secondary-level TVS on VBUS line downstream of primary fuse and upstream of buck converter. Use Value: Complements integrated ESD diodes by handling higher-energy transients (>30kV contact discharge) with sub-nanosecond response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A | Same DO-214AC package; lower PPK (400W); VBR 111–122V; VC = 166V @ 2.5A | Not AEC-Q101 qualified; suited for commercial-grade industrial equipment only | Select SMAJ100A only if automotive qualification is not required and board space allows SMA footprint. |
| P6SMB100AH | DO-214AA package; PPK = 600W; VBR = 111–122V; VC = 165V @ 3.1A; AEC-Q101 qualified | Larger thermal mass; higher surge margin but requires larger PCB pad area than DO-15 | Choose P6SMB100AH when higher single-pulse energy handling is needed and layout permits larger SMD footprint. |
Compared with SMAJ100A and P6SMB100AH, SA100CH uniquely combines AEC-Q101 compliance, DO-204AC through-hole compatibility, and precise 100V VWM in a legacy-proven axial package-making it optimal for automotive service replacement, legacy board upgrades, and cost-sensitive high-volume harness-mounted protection.
Availability
SA100CH is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED driver overvoltage clamping requiring stable component supply across multi-year production cycles.
Supply support for SA100CH 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, MOSFETs, and bipolar transistors since 1979.
The SA Series was developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 qualification, tight VBR tolerances, and robust surge endurance in standard axial packages.
FAQ
What is the exact breakdown voltage range for SA100CH?
The SA100CH has a specified breakdown voltage (VBR) range of 111 V to 136 V measured at 1 mA test current per ANSI/IEEE C62.35. This range reflects manufacturing tolerance and ensures reliable triggering above 100 V stand-off while maintaining margin below system overvoltage limits. The value is confirmed in TSC's SA Series datasheet Rev. L2105, Table 4.
Is SA100CH unidirectional or bidirectional?
SA100CH is a unidirectional TVS diode, indicated by the absence of "CA" suffix and presence of "H" (AEC-Q101) in its ordering code. It conducts only in reverse bias above VBR and must be installed with cathode toward the protected line. Bidirectional variants (e.g., SA100CA) are separate part numbers with symmetrical clamping in both polarities.
Does SA100CH meet AEC-Q101 requirements?
Yes, SA100CH is explicitly AEC-Q101 qualified as confirmed in the "FEATURES" section of the official datasheet and ordering code "H" designation. It has passed stress tests including high-temperature operating life, temperature cycling, and ESD per AEC-Q101 Rev. D, making it suitable for automotive powertrain and chassis applications.
What is the maximum clamping voltage of SA100CH under surge conditions?
The maximum clamping voltage (VC) of SA100CH is 179 V at 2.9 A peak pulse current (IPPM), tested with the standard 10/1000 μs waveform. This value represents the worst-case voltage imposed on protected circuitry during a full-rated 500W transient event and is critical for ensuring downstream ICs remain within absolute maximum ratings.
Can SA100CH replace SA100A in existing designs?
SA100CH can replace SA100A electrically and mechanically-both share identical VWM (100 V), VBR (111–136 V), VC (179 V), DO-204AC package, and pinout-but SA100CH adds AEC-Q101 qualification and tighter process controls. No PCB changes are required; however, qualification documentation and lot traceability differ, so automotive programs must validate change control per IATF 16949.
SA100CH 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 179V
- Current - Peak Pulse (10/1000µs):
- 2.9A
- 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)
SA100CH FAQ
1.How can I place an order for SA100CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SA100CH 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 SA100CH reliable?
The price and inventory of SA100CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA100CH is usually 5 days.
3.What payment methods are accepted for SA100CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA100CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA100CH?
SA100CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA100CH 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 SA100CH?
For technical support, including SA100CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA100CH requirements.
6.How does Aetrix verify that SA100CH is sourced from the original manufacturer or authorized distributors?
All SA100CH 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 SA100CH meets industry standards.
7.What is the process for return or replacement of SA100CH?
All SA100CH units undergo pre-shipment inspection (PSI). If there is an issue with SA100CH, 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 SA100CH part is unused and in its original packaging.
Return procedure for SA100CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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