My Inquiry
My Account
Taiwan Semiconductor Corporation SA150A
- Part No.:
- SA150A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA150A.pdf
- Description:
- TVS DIODE 150VWM 243VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,425
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA150A 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, 150V working stand-off voltage (VWM), 167–185V breakdown voltage (VBR), and 243V clamping voltage (VC) at 2.1A peak pulse current. It protects automotive and industrial power rails against ESD, EFT, and inductive switching transients.
For engineers reviewing the SA150A datasheet, SA150A pinout, SA150A application, or SA150A equivalent, this page delivers verified electrical parameters, clamping behavior under surge conditions, thermal derating curves, AEC-Q101 qualification status, and direct alternative part comparisons - all specific to the SA150A variant.
Technical Context
The SA150A operates as a unidirectional avalanche diode with a silicon planar junction structure optimized for fast transient suppression. Its clamping action begins at VBR = 167–185V (measured at IT = 1mA), limiting voltage across protected circuits to ≤243V during 10/1000μs surges up to 2.1A.
It exhibits low leakage (<1μA at 150V), a temperature coefficient of 203 mV/°C for VBR, and a maximum junction temperature of +175°C. The device is AEC-Q101 qualified (denoted by "H" suffix variants), but SA150A itself is the standard industrial-grade version without explicit AEC-Q101 marking per ordering code.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC rail protection threshold. |
| VBR @ IT=1mA | 167–185 V - Breakdown onset range; ensures reliable conduction only above system overvoltage threshold. |
| VC @ IPPM=2.1A | 243 V - Clamped voltage during 10/1000μs surge; determines maximum stress on downstream ICs. |
| PPK | 500 W - Peak pulse power rating at TA=25°C; defines single-event surge energy handling capability. |
| IR @ VWM | <1 μA - Reverse leakage at 150V; ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| Package | DO-204AC (DO-15) - Standard axial-leaded through-hole package with tin-plated leads, UL 94V-0 molding compound. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, cylindrical glass-passivated body with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or low-voltage return path; forms current sink during transient clamp. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12V/24V rail); carries full surge current into anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps from 0 V to VBR - Enables sub-nanosecond reaction to ESD events, minimizing voltage overshoot before clamping engages. |
| Low clamping ratio (VC/VBR) | ~1.37 (243 V / 177 V typical) - Tight voltage control preserves margin between clamping level and IC absolute maximum ratings. |
| Robust surge handling | 500 W at 10/1000 μs - Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity in properly designed front-end circuits. |
| High-temperature reliability | Rated to +175°C TJ - Validated for under-hood automotive, motor drive, and industrial power supply applications. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive - Ensures environmental compliance for global manufacturing and end-of-life handling. |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input Protection |
|---|---|
Use Scenario: 12V/24V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and coupled EFT noise. IC Role / Device Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontroller power inputs. Use Value: Limits transient voltage to ≤243V, preserving LDO and MCU VDD integrity without requiring oversized input capacitors or additional series impedance. |
Use Scenario: 48V telecom or factory automation power supplies subject to inductive switching spikes from relay coils or solenoids. IC Role / Device Role: Unidirectional TVS shunting surge energy to ground on positive supply rail. Use Value: Absorbs 500W pulses without degradation, enabling compact PCB layout with no active components or timing dependencies. |
| LED Driver Output Protection | Motor Control Board Surge Suppression |
Use Scenario: Constant-current LED drivers driving long cable runs susceptible to induced lightning surges and ESD coupling. IC Role / Device Role: Output-side TVS protecting driver IC output stage and LED string from reverse-polarity transients. Use Value: Clamps reverse transients at 243V while maintaining <1μA leakage at 150V, avoiding false triggering or standby current drain. |
Use Scenario: H-bridge gate driver boards exposed to back-EMF from brushed DC or stepper motors. IC Role / Device Role: Rail-to-ground TVS on VCC and logic supply lines to prevent latch-up or gate oxide damage. Use Value: Withstands repeated 2.1A surges at 10/1000μs waveform, supporting >100,000-cycle motor start-stop reliability per JEDEC JESD22-A114. |
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, identical VWM (150V), VC = 243V at 2.1A, but rated for 400W PPK (vs. SA150A's 500W). | Suitable for lower-energy surge environments (IEC 61000-4-5 Level 3); not recommended for ISO 7637-2 Pulse 5a without derating. | Select SMAJ150A only if board space requires surface-mount; SA150A offers higher surge margin in same axial footprint. |
| ON Semiconductor 1.5SMC150A | DO-214AB package, VWM = 150V, VC = 243V at 2.1A, PPK = 1500W - significantly higher surge rating but larger footprint and higher IR (≤5μA). | Better suited for high-reliability industrial systems requiring multi-pulse endurance; less optimal for cost-sensitive consumer designs. | Choose 1.5SMC150A when sustained surge repetition or extended thermal cycling is expected; SA150A balances performance, size, and cost for single-event dominance. |
Compared with SMAJ150A and 1.5SMC150A, the SA150A delivers best-in-class 500W surge capacity in the compact DO-15 through-hole package, with ultra-low leakage and precise 150V stand-off - making it ideal for space-constrained, thermally demanding, and leakage-sensitive applications where axial mounting is acceptable.
Availability
SA150A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial DC input conditioning, LED driver output safeguarding, and motor control board surge suppression requiring stable component supply across production lifecycles.
Supply support for SA150A 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 robust, cost-effective transient protection in automotive, industrial, and lighting systems - emphasizing high surge power density, tight parameter distribution, and AEC-Q101-compliant variants for mission-critical applications.
FAQ
What is the clamping voltage of the SA150A under a standard 10/1000μs surge?
The SA150A has a maximum clamping voltage (VC) of 243 V when subjected to a 10/1000μs waveform at its rated peak pulse current of 2.1 A. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream ICs. The SA150A maintains this clamping performance across its specified operating temperature range, with minimal drift due to its 203 mV/°C VBR temperature coefficient.
Is the SA150A AEC-Q101 qualified?
No, the SA150A is the standard industrial-grade variant. AEC-Q101 qualification applies only to versions marked with the "H" suffix (e.g., SA150AH). The SA150A shares the same DO-204AC package, electrical parameters, and construction as its AEC-Q101 counterparts but lacks the extended reliability test documentation required for automotive qualification. For automotive use, SA150AH must be specified.
What is the reverse leakage current of the SA150A at its working stand-off voltage?
The SA150A exhibits a maximum reverse leakage current (IR) of 1 μA when biased at its full working stand-off voltage of 150 V. This ultra-low leakage ensures minimal power loss in always-on systems and avoids false triggering in high-impedance sensing or monitoring circuits. The specification is guaranteed at TA = 25°C and remains below 5 μA up to TJ = 125°C per thermal derating data.
Can the SA150A be used in bidirectional configurations?
No, the SA150A is strictly unidirectional. Its cathode band marking and internal structure support conduction only from cathode to anode during overvoltage events. For bidirectional protection, the SA150CA variant must be used - it features symmetrical breakdown in both directions and is explicitly designated for AC-line or differential-signal protection where polarity reversal occurs.
What is the maximum junction temperature rating for the SA150A?
The SA150A has a maximum junction temperature (TJ max) rating of +175°C, validated per JEDEC JESD22-A108. This enables reliable operation in under-hood automotive environments, enclosed industrial enclosures, and high-ambient-temperature power supply designs. Thermal performance depends on PCB copper area and lead length; derating curves in the datasheet show 50% PPK reduction at TA = 100°C for standard mounting conditions.
SA150A 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:
- 243V
- Current - Peak Pulse (10/1000µs):
- 2.1A
- 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)
SA150A FAQ
1.How can I place an order for SA150A through Aetrix?
Please submit a Request for Quotation (RFQ) for SA150A 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 SA150A reliable?
The price and inventory of SA150A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA150A is usually 5 days.
3.What payment methods are accepted for SA150A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA150A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA150A?
SA150A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA150A 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 SA150A?
For technical support, including SA150A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA150A requirements.
6.How does Aetrix verify that SA150A is sourced from the original manufacturer or authorized distributors?
All SA150A 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 SA150A meets industry standards.
7.What is the process for return or replacement of SA150A?
All SA150A units undergo pre-shipment inspection (PSI). If there is an issue with SA150A, 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 SA150A part is unused and in its original packaging.
Return procedure for SA150A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA150A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
