My Inquiry
My Account
onsemi SA60A
- Part No.:
- SA60A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA60A.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:8,887
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA60A from Fairchild Semiconductor is a unidirectional 500 W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power lines and signal interfaces. It features a 60 V reverse stand-off voltage (VRWM), 66.7–73.7 V breakdown voltage (VBR) at 1.0 mA, 96.8 V clamping voltage at 5.2 A peak pulse current (IPPM), and operates up to +175 °C junction temperature.
For engineers reviewing the SA60A datasheet, pinout, applications, or equivalent options, this device is selected for robust surge immunity in industrial power supplies, automotive body electronics, and telecom interface protection where fast response (<1.0 ps), low leakage (<1.0 µA above 10 V), and stable clamping under 10/1000 µs transients are critical.
Technical Context
The SA60A employs a glass-passivated PN junction optimized for high-energy transient suppression on standard 10/1000 µs waveforms. Its low incremental surge resistance ensures minimal voltage overshoot during ESD and lightning-induced surges, while its unidirectional architecture provides asymmetric clamping-conducting only during reverse overvoltage events.
It is rated for 70 A non-repetitive forward surge current (IFSM) per JEDEC method and dissipates 1.0 W at 75 °C ambient with 0.375" lead length. Thermal derating follows a defined curve down to zero power at 175 °C, aligning with high-reliability industrial and automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 500 W on 10/1000 µs waveform - sustains single high-energy surges without failure |
| Reverse Stand-off Voltage | 60 V - maximum continuous DC operating voltage before clamping begins |
| Breakdown Voltage | 66.7–73.7 V at 1.0 mA - precise conduction threshold for reliable overvoltage triggering |
| Clamping Voltage | 96.8 V at 5.2 A IPPM - limits downstream circuit voltage during surge events |
| Peak Pulse Current | 5.2 A on 10/1000 µs waveform - quantifies surge-handling capacity under standardized test condition |
| Junction Temperature | +175 °C - enables operation in high-ambient environments such as engine control units |
| Response Time | <1.0 ps - ensures clamping activation before transient energy damages sensitive ICs |
Pinout & Package
SA60A is housed in a DO-15 axial-leaded package with cathode indicated by a color band. The device has two terminals: anode and cathode. Standard mounting uses 0.375" lead length for thermal derating compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line; conducts when line voltage exceeds VRWM relative to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability and moisture resistance in humid or contaminated environments |
| 500 W peak pulse rating | Provides margin against IEC 61000-4-5 Level 4 (4 kV) surge events in industrial equipment |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients, improving protection margin |
| Sub-nanosecond response time | Activates before most microcontrollers or communication ICs can be damaged by ESD or EFT |
| Reverse leakage <1.0 µA above 10 V | Prevents excessive standby current in battery-powered or low-power systems |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary clamping element placed between input rail and ground to shunt surge energy before it reaches upstream regulators and controllers. Use Value: Limits transient voltage to ≤96.8 V, protecting 100 V-rated input capacitors and 36 V-input DC/DC converters from overstress. |
Use Scenario: LIN bus line protection in door module ECUs subjected to ISO 7637-2 Pulse 1 and Pulse 2b transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN line and chassis ground to clamp negative-going transients while preserving signal integrity. Use Value: Fast <1.0 ps response prevents bus lockup; 60 V VRWM avoids interference with normal LIN signaling (0–12 V). |
| Telecom Interface Surge Protection | DC Motor Drive Input Stage |
Use Scenario: RS-485 transceiver port on remote I/O node installed in outdoor utility cabinets. IC Role / Device Role / Timing Role: Line-to-ground TVS on each differential pair to absorb induced surges from nearby lightning strikes. Use Value: 500 W rating handles multi-kV common-mode surges; low capacitance preserves signal edge rate up to 10 Mbps. |
Use Scenario: H-bridge power stage input (VCC rail) in brushed DC motor driver for HVAC actuators. IC Role / Device Role / Timing Role: Rail clamp suppressing flyback voltage spikes generated during PWM turn-off of inductive loads. Use Value: Clamps at 96.8 V to protect 100 V MOSFETs; 175 °C TJ rating supports sealed, thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60A | Same 60 V VRWM and DO-214AC package; 400 W peak pulse rating vs. SA60A's 500 W | Limited to lower-energy surge environments (e.g., IEC 61000-4-2 ESD only); not rated for IEC 61000-4-5 Level 4 | Select SMAJ60A only if board space constraints require SMD mounting and surge threat level is below 500 W |
| P6KE60A | Same 60 V VRWM and DO-15 package; identical 500 W rating but higher clamping voltage (100 V vs. 96.8 V) | Marginally reduced protection level for 100 V-rated downstream components due to 3.2 V higher VC | Choose P6KE60A only if legacy design reuse or second-source qualification requires ON Semiconductor compatibility |
Compared with SMAJ60A and P6KE60A, the SA60A delivers superior clamping performance at rated current and maintains full 500 W surge capability in the same axial package, making it optimal for new designs targeting highest protection margin in industrial and automotive power rails.
Availability
SA60A is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and telecom interface protection requiring stable component supply across extended production lifecycles.
Supply support for SA60A 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
Fairchild Semiconductor was a leading designer of high-performance analog and discrete semiconductors, acquired by ON Semiconductor in 2016; its legacy TVS portfolio remains widely deployed in industrial and automotive systems.
The SA60A belongs to Fairchild's SAxxA series of 500 W unidirectional TVS diodes, engineered specifically for robust overvoltage protection in harsh-environment DC power distribution networks.
FAQ
What is the clamping voltage of the SA60A at its rated peak pulse current?
The SA60A exhibits a maximum clamping voltage (VC) of 96.8 V when subjected to its rated peak pulse current of 5.2 A on a 10/1000 µs waveform. This value is measured per industry-standard test conditions and defines the upper voltage limit imposed on protected circuits during surge events. Designers use this parameter to verify margin against downstream component voltage ratings in the SA60A application layout.
Is the SA60A suitable for bidirectional transient protection?
No, the SA60A is a unidirectional TVS diode and only clamps reverse-polarity transients. For bidirectional protection, the SA60CA variant must be used - it provides symmetrical clamping in both directions and omits the cathode band. Using SA60A in a bidirectional application leaves positive-going transients unprotected, risking damage to connected ICs or interfaces.
What is the maximum operating junction temperature for the SA60A?
The SA60A has a maximum operating junction temperature (TJ) of +175 °C, enabling reliable operation in high-ambient environments such as engine compartments, industrial motor drives, and enclosed power supplies. This rating is validated under specified thermal conditions including 0.375" lead length and free-air convection, and must be verified against actual PCB layout and airflow in the SA60A application.
How does the SA60A respond to fast-rising ESD events?
The SA60A responds in less than 1.0 picosecond from 0 V to breakdown voltage (VBR), enabling effective suppression of human-body-model (HBM) and machine-model (MM) ESD pulses before they reach sensitive downstream components. This sub-nanosecond speed is intrinsic to its glass-passivated junction structure and makes the SA60A especially valuable in the SA60A application where microcontroller I/O or communication ports require Class 4 IEC 61000-4-2 protection.
Can the SA60A replace the P6KE60A in an existing design?
The SA60A is a functional alternative to the P6KE60A with identical DO-15 package, 60 V VRWM, and 500 W rating, but its clamping voltage is 3.2 V lower (96.8 V vs. 100 V). This improves protection margin for 100 V-rated components. No PCB changes are required, but designers should revalidate thermal performance and surge margin using the SA60A's published characteristics in the final SA60A application environment.
SA60A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
SA60A FAQ
1.How can I place an order for SA60A through Aetrix?
Please submit a Request for Quotation (RFQ) for SA60A 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 SA60A reliable?
The price and inventory of SA60A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA60A is usually 5 days.
3.What payment methods are accepted for SA60A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA60A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA60A?
SA60A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA60A 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 SA60A?
For technical support, including SA60A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA60A requirements.
6.How does Aetrix verify that SA60A is sourced from the original manufacturer or authorized distributors?
All SA60A 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 SA60A meets industry standards.
7.What is the process for return or replacement of SA60A?
All SA60A units undergo pre-shipment inspection (PSI). If there is an issue with SA60A, 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 SA60A part is unused and in its original packaging.
Return procedure for SA60A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA60A 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…
