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Taiwan Semiconductor Corporation SA150AH
- Part No.:
- SA150AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA150AH.pdf
- Description:
- TVS DIODE 150VWM 243VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,227
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Product details
Overview
SA150AH from Taiwan Semiconductor is a unidirectional AEC-Q101-qualified transient voltage suppressor (TVS) diode designed for automotive-grade overvoltage protection in power rails and signal lines. It features a 150 V working stand-off voltage (VWM), 167–204 V breakdown voltage (VBR @ 1 mA), 268 V maximum clamping voltage (VC) at 1.9 A peak pulse current, and 500 W peak pulse power rating at 10/1000 µs waveform - deployed in engine control units, body electronics, and infotainment power inputs.
For engineers reviewing the SA150AH datasheet, SA150AH pinout, SA150AH application, or SA150AH equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AC (DO-15) package compatibility with high-reliability automotive PCB layouts, low leakage (<1 µA @ 150 V), and verified clamping performance under ISO 7637-2 and IEC 61000-4-5 surge conditions.
Technical Context
The SA150AH operates as a unidirectional avalanche diode, triggering conduction when reverse voltage exceeds its specified VBR range (167–204 V at 1 mA test current). Its junction design enables sub-nanosecond response to transients, with clamping initiated within <1.0 ps from 0 V to VBR, ensuring protection of downstream MOSFETs and microcontrollers before damage thresholds are breached.
Thermal robustness is ensured by a 175 °C maximum junction temperature (TJ MAX) and 3 W steady-state power dissipation at TL = 75 °C on 10 × 10 mm copper pads. The device meets JESD201 Class 2 whisker resistance and RoHS/halogen-free compliance per IEC 61249-2-21 - critical for under-hood automotive environments subject to thermal cycling and long-term reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous DC or RMS voltage the device blocks without clamping; sets operating margin above nominal 12 V/24 V/48 V automotive rails. |
| VBR min/max | 167 / 204 V @ 1 mA - Confirmed breakdown window ensures reliable turn-on before system-level damage occurs during load dump or inductive switching events. |
| VC @ IPPM | 268 V @ 1.9 A - Clamping voltage measured at peak pulse current; defines worst-case voltage seen by protected ICs during 10/1000 µs surge. |
| PPK | 500 W - Peak pulse power handling at 10/1000 µs waveform; validates compliance with ISO 7637-2 Pulse 5a (load dump) stress profiles. |
| IR @ VWM | <1 µA - Reverse leakage at rated stand-off voltage; ensures negligible standby current drain in always-on vehicle modules. |
| TJ MAX | 175 °C - Maximum junction temperature; supports operation in under-hood locations including alternator regulators and transmission control units. |
| Package | DO-204AC (DO-15) - Industry-standard axial-leaded package with tin-plated leads compliant to J-STD-002; enables manual or wave soldering in legacy automotive assemblies. |
Pinout & Package
SA150AH is housed in a DO-204AC (DO-15) axial package with cathode band marking. Leads are pure tin-plated and solderable per J-STD-002. Polarity is unidirectional: anode (unmarked end) and cathode (banded end).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge or ESD events in bidirectional configurations only if paired with complementary device. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., battery rail); avalanches into low-impedance state when reverse voltage exceeds VBR, shunting surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body control modules per stress test requirements (HTOL, TCT, HAST, etc.). |
| 500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) surges up to 120 V superimposed on 14 V systems without degradation. |
| <1.0 ps response time | Enables clamping initiation before fast-rising ESD or lightning-induced transients propagate into sensitive analog front-ends or CAN transceivers. |
| RoHS & halogen-free | Complies with EU RoHS Directive 2011/65/EU and IEC 61249-2-21; suitable for global Tier 1 automotive supply chains with strict material declarations. |
| DO-204AC mechanical robustness | UL 94V-0 molding compound and JESD201 Class 2 whisker resistance ensure long-term mechanical integrity in vibration-prone chassis-mounted assemblies. |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Lighting Driver Protection |
|---|---|
Use Scenario: Protects 12 V/24 V input stage of diesel/gasoline engine ECUs against load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor; clamps voltage spikes before they reach LDOs and MCU power pins. Use Value: Limits clamped voltage to ≤268 V during 1.9 A surge, preventing latch-up or gate oxide rupture in 3.3 V/5 V logic supplies downstream. |
Use Scenario: Shields LED driver ICs in headlamp and tail lamp modules from inductive kickback during PWM dimming and relay switching. IC Role / Device Role / Timing Role: Mounted across driver output terminals; absorbs energy from coil-based buck/boost inductors during MOSFET turn-off transitions. Use Value: Withstands repetitive 500 W pulses without parameter shift, maintaining consistent optical output and avoiding premature LED failure due to overvoltage stress. |
| Body Control Module (BCM) LIN Bus Line | Infotainment System Power Rail |
Use Scenario: Guards LIN transceiver I/O pins against ESD (IEC 61000-4-2 ±8 kV contact) and electrical fast transients (IEC 61000-4-4) in door module and seat control nodes. IC Role / Device Role / Timing Role: Placed in series with LIN bus line, referenced to local ground; provides low-capacitance (<100 pF) clamping without distorting 19.2 kbps signaling. Use Value: Sub-1.0 ps response ensures clamping activation prior to LIN transceiver input damage threshold, preserving communication integrity during factory handling and service operations. |
Use Scenario: Safeguards 5 V/3.3 V power rails feeding audio DSPs, display controllers, and USB interfaces in head units against battery reversal and jump-start surges. IC Role / Device Role / Timing Role: Installed at main power entry point upstream of DC-DC converters; diverts >95% of surge current away from primary regulation stage. Use Value: 1 µA leakage at 150 V prevents measurable standby current increase in always-on infotainment systems, supporting <100 µA quiescent design targets. |
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; 150 V VWM, 167–185 V VBR, 243 V VC @ 2.1 A; AEC-Q101 qualified; slightly tighter VBR tolerance but lower PPK (400 W). | Lower peak power rating limits suitability for severe load dump scenarios exceeding 400 W; preferred where board space allows SMD placement. | Select SMAJ150A when footprint conversion to surface-mount is feasible and surge energy is constrained to IEC 61000-4-5 Level 3 (1 kV/2 kV). |
| ON Semiconductor 1.5SMC150AH | DO-214AB package; 150 V VWM, 167–185 V VBR, 243 V VC @ 2.1 A; AEC-Q101 qualified; identical electrical specs but different mechanical form factor. | Requires PCB redesign due to larger SMC package; not drop-in compatible with DO-15 footprints; higher thermal mass improves sustained surge handling. | Choose 1.5SMC150AH only when upgrading to higher thermal capacity is prioritized and DO-15 layout cannot be retained. |
Compared with SMAJ150A and 1.5SMC150AH, SA150AH uniquely retains the legacy DO-204AC (DO-15) axial form factor while delivering full 500 W surge capability and AEC-Q101 validation - making it the only direct replacement for existing through-hole automotive designs requiring no PCB revision.
Availability
SA150AH is available at Aetrix Electronics and suitable for automotive engine control units, lighting systems, and body electronics requiring stable component supply with AEC-Q101 assurance and long-lifecycle support.
Supply support for SA150AH 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, and rectifiers for automotive, industrial, and consumer markets.
The SA Series was developed specifically for AEC-Q101-compliant transient protection in harsh automotive environments - emphasizing high surge robustness, low leakage, and mechanical reliability in axial packages used across legacy and new vehicle platforms.
FAQ
What is the AEC-Q101 qualification status of SA150AH?
The SA150AH is explicitly AEC-Q101 qualified per the manufacturer's ordering code suffix "H", confirmed in the SA Series datasheet Version L2105. This qualification covers temperature cycling, high-temperature operating life, unbiased highly accelerated stress testing, and mechanical shock - validating its use in automotive powertrain and chassis applications where reliability is mission-critical. SA150AH undergoes full AEC-Q101 stress screening, not just sampling.
Does SA150AH support bidirectional transient suppression?
No, SA150AH is a unidirectional TVS diode, as indicated by its single cathode band marking and specification table entries for VBR (uni-directional) only. It clamps only in reverse bias - protecting positive-going transients on positive rails. For bidirectional protection (e.g., data lines), SA150A or a paired SA150AH + SA150AH configuration would be required, but SA150AH itself is strictly unidirectional.
What is the maximum clamping voltage of SA150AH under standard test conditions?
The maximum clamping voltage (VC) of SA150AH is 268 V, measured at 1.9 A peak pulse current (IPPM) using the 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during worst-case transient events such as load dump.
Can SA150AH be used in place of SA150A in a design?
No - SA150AH and SA150A are not interchangeable. SA150AH is AEC-Q101 qualified and optimized for automotive use, whereas SA150A lacks that qualification and has different reliability screening. Electrically, SA150AH has VBR 167–204 V and VC = 268 V @ 1.9 A, while SA150A has VBR 167–185 V and VC = 243 V @ 2.1 A. Substituting without requalification risks non-compliance in automotive programs.
What is the thermal derating behavior of SA150AH above 25°C ambient?
SA150AH's peak pulse power (PPK) is derated linearly above TA = 25°C per Figure 2 in the datasheet: at 75°C ambient, PPK drops to ~350 W; at 125°C, it falls to ~175 W. Steady-state power dissipation (PD) is rated at 3 W at lead temperature TL = 75°C on 10 × 10 mm copper pads - meaning thermal design must maintain lead temperature below 75°C for continuous operation.
SA150AH 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:
- -
- 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)
SA150AH FAQ
1.How can I place an order for SA150AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SA150AH 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 SA150AH reliable?
The price and inventory of SA150AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA150AH is usually 5 days.
3.What payment methods are accepted for SA150AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA150AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA150AH?
SA150AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA150AH 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 SA150AH?
For technical support, including SA150AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA150AH requirements.
6.How does Aetrix verify that SA150AH is sourced from the original manufacturer or authorized distributors?
All SA150AH 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 SA150AH meets industry standards.
7.What is the process for return or replacement of SA150AH?
All SA150AH units undergo pre-shipment inspection (PSI). If there is an issue with SA150AH, 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 SA150AH part is unused and in its original packaging.
Return procedure for SA150AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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