My Inquiry
My Account
Taiwan Semiconductor Corporation SA7.5
;;2.jpg)
- Part No.:
- SA7.5
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.5.pdf
- Description:
- 500W, 9.3V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,496
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA7.5 from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, with 7.5V working stand-off voltage (VWM), 8.33–10.20V breakdown voltage (VBR @ 1mA), and 14.3V maximum clamping voltage (VC) at 36A peak pulse current. It delivers fast response (<1.0ps), low leakage (<1μA @ VWM), and AEC-Q101 qualification for automotive-grade surge protection.
For engineers reviewing the SA7.5 datasheet, SA7.5 pinout, SA7.5 application, or SA7.5 equivalent, this page provides verified electrical parameters, clamping performance under 10/1000μs transients, thermal limits (TJ max = 175°C), polarity marking, and direct alternatives for ESD/inductive load protection in 12V automotive and industrial control circuits.
Technical Context
The SA7.5 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 8.33–10.20V breakdown range at 1mA test current. Its low dynamic impedance enables rapid clamping to ≤14.3V at 36A, limiting energy dissipation during 500W, 10/1000μs surges.
Designed for primary-side transient suppression, it features pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and meets JESD201 Class 2 whisker resistance. Polarity is marked by cathode band per DO-204AC mechanical standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before conduction begins; sets system-level overvoltage threshold for 12V rail protection. |
| VBR min/max | 8.33–10.20 V @ 1 mA - Confirmed breakdown range ensures reliable triggering across temperature and process variation. |
| VC @ IPPM | 14.3 V @ 36 A - Clamping voltage during full 500W surge defines worst-case voltage seen by downstream ICs. |
| PPK | 500 W - Peak pulse power rating per 10/1000μs waveform; validates robustness against ISO 7637-2 Pulse 1/2a/5a transients. |
| IR @ VWM | <1 μA - Reverse leakage ensures negligible standby current draw in battery-powered systems. |
| TJ max | 175 °C - Maximum junction temperature supports operation in under-hood automotive environments. |
| Package | DO-204AC (DO-15) - 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: Cathode (marked end) and Anode (unmarked end). Lead finish: pure tin, solderable per J-STD-002. Weight: ~0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal during normal operation | Connected to protected line (e.g., 12V supply); conducts only during overvoltage events to shunt current to ground. |
| Anode (unbanded end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping path during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring high-reliability surge immunity. |
| 500W peak pulse power | Withstands ISO 7637-2 Pulse 5a (500W, 10/1000μs) without degradation-critical for 12V battery line protection. |
| <1.0ps response time | Enables sub-nanosecond clamping onset, protecting sensitive CAN/LIN transceivers and microcontrollers from ESD and fast transients. |
| UL 94V-0 molding compound | Ensures flame-retardant housing suitable for enclosed automotive modules and industrial enclosures meeting safety standards. |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, supporting long-term reliability in automotive under-hood deployments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load dump and alternator ripple on 12V vehicle battery lines feeding ECUs and infotainment systems. IC Role / Device Role / Timing Role: Primary unidirectional TVS clamp placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤14.3V during 500W surges, preventing damage to 16V-rated input capacitors and LDOs. |
Use Scenario: Shielding 4–20mA current loop transmitters and analog sensor front-ends from EFT and inductive switching noise. IC Role / Device Role / Timing Role: Input-stage TVS on signal/power lines connecting to PLC I/O modules or field sensors. Use Value: Sub-1ns response prevents latch-up in op-amps and ADC drivers exposed to 1kV/5kHz EFT bursts per IEC 61000-4-4. |
| LED Lighting Driver Protection | Automotive LIN Bus Line Protection |
Use Scenario: Guarding constant-current LED drivers in headlamps and interior lighting against inductive kickback from relay coils and motor loads. IC Role / Device Role / Timing Role: Unidirectional TVS placed across driver output terminals to absorb flyback energy. Use Value: 36A peak pulse current rating handles >100mJ single-event surges common in 12V automotive lighting circuits. |
Use Scenario: Protecting LIN transceivers (e.g., TJA1020) from bus faults, ESD, and coupled transients in door module networks. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; SA7.5 used on power-supply side of LIN node, not data line. Use Value: Low VWM (7.5V) aligns with 12V supply rails while clamping to 14.3V preserves transceiver VCC margin during pulses. |
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 SMAJ7.5A | Same DO-214AC package, bidirectional, VWM = 7.5V, VC = 12.5V @ 38.2A, PPK = 400W | Bidirectional capability suits AC-coupled or dual-polarity signal lines; lower clamping but reduced surge rating | Select SMAJ7.5A if bidirectional protection or tighter clamping is required; SA7.5 preferred for higher 500W surge margin in unidirectional 12V rails. |
| ON Semiconductor 1.5SMC7.5A | DO-214AB package, bidirectional, VWM = 7.5V, VC = 12.9V @ 38.8A, PPK = 1500W (10/1000μs) | Larger SMC package offers higher thermal mass; rated for 1500W but requires larger PCB footprint | Choose 1.5SMC7.5A for extreme surge environments (e.g., heavy-duty truck alternators); SA7.5 fits space-constrained DO-15 layouts with validated 500W performance. |
Compared with SMAJ7.5A and 1.5SMC7.5A, the SA7.5 delivers optimal balance of compact DO-15 form factor, AEC-Q101 qualification, and precise 7.5V stand-off for 12V automotive systems-without sacrificing 500W surge capability or requiring board redesign.
Availability
SA7.5 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and LED driver surge suppression requiring stable component supply across production lifecycles.
Supply support for SA7.5 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 with global automotive and industrial certifications.
The SA Series was developed specifically for AEC-Q101-compliant transient suppression in 12V–48V automotive and industrial power systems, emphasizing low clamping, fast response, and robust packaging for harsh environments.
FAQ
What is the maximum clamping voltage of the SA7.5 under surge conditions?
The SA7.5 exhibits a maximum clamping voltage (VC) of 14.3 V at 36 A peak pulse current (IPPM), measured per 10/1000μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full-rated 500W transient event, ensuring downstream components remain within safe operating margins.
Is the SA7.5 suitable for bidirectional transient protection?
No-the SA7.5 is a unidirectional TVS diode, intended for DC power line protection where polarity is fixed (e.g., 12V battery input). For bidirectional applications such as data lines or AC signals, the SA7.5A variant or other bidirectional parts like SMAJ7.5A must be selected instead.
Does the SA7.5 meet automotive qualification standards?
Yes-the SA7.5 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control, body electronics, and lighting systems. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and surge endurance under defined automotive environmental profiles.
What is the reverse leakage current specification for the SA7.5 at its working voltage?
The SA7.5 specifies reverse leakage current (IR) of less than 1 μA at its 7.5 V working stand-off voltage (VWM), measured at TA = 25°C. This ultra-low leakage minimizes quiescent power loss in always-on automotive modules and extends battery life in low-power sensor nodes.
How does the SA7.5's DO-204AC (DO-15) package compare to surface-mount alternatives?
The SA7.5's DO-204AC (DO-15) package provides through-hole mechanical stability and thermal dissipation via lead-frame conduction-ideal for high-energy transients in ruggedized automotive and industrial assemblies. Unlike SMD variants (e.g., SMAJ7.5A), it avoids solder-joint fatigue risks under thermal cycling but requires PCB real estate for axial mounting.
SA7.5 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 36A
- 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)
SA7.5 FAQ
1.How can I place an order for SA7.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.5 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 SA7.5 reliable?
The price and inventory of SA7.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA7.5 is usually 5 days.
3.What payment methods are accepted for SA7.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.5?
SA7.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.5 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 SA7.5?
For technical support, including SA7.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.5 requirements.
6.How does Aetrix verify that SA7.5 is sourced from the original manufacturer or authorized distributors?
All SA7.5 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 SA7.5 meets industry standards.
7.What is the process for return or replacement of SA7.5?
All SA7.5 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.5, 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 SA7.5 part is unused and in its original packaging.
Return procedure for SA7.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA7.5 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…
