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Taiwan Semiconductor Corporation SMAJ130A
- Part No.:
- SMAJ130A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ130A.pdf
- Description:
- TVS DIODE 130VWM 209VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,748
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Product details
Overview
SMAJ130A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 130 V working stand-off voltage (VWM), 144–159 V breakdown voltage (VBR), 209 V maximum clamping voltage (VC) at 1.5 A peak impulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - deployed in switching mode power supplies and on-board DC/DC converters.
For engineers reviewing the SMAJ130A datasheet, SMAJ130A pinout, SMAJ130A application, or SMAJ130A equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b transients, unidirectional polarity marking, DO-214AC (SMA) package compatibility with automated placement, and junction temperature range of –55 °C to +150 °C for automotive and industrial environments.
Technical Context
The SMAJ130A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR (144–159 V @ 1 mA). Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 µA @ 130 V), while fast response time (<1.0 ps) enables suppression of nanosecond-scale transients before downstream circuitry is damaged.
It delivers 400 W peak pulse power (10/1000 µs) up to 25 °C, derating linearly above that ambient; maximum clamping voltage of 209 V at 1.5 A IPPM guarantees predictable voltage limiting during surge events. The device is rated for 150 °C maximum junction temperature and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 130 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR min/max | 144 V / 159 V @ 1 mA - Confirmed avalanche threshold range; ensures reliable turn-on across process variation. |
| VC @ IPPM | 209 V @ 1.5 A - Clamped voltage during 10/1000 µs surge; determines worst-case stress on protected ICs. |
| PPPM | 400 W - Peak pulse power handling (10/1000 µs); supports high-energy transients per ISO 7637-2. |
| IR @ VWM | <1 µA - Reverse leakage at rated stand-off; negligible power loss and minimal impact on high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or enclosed industrial enclosures. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability; moisture sensitivity level (MSL) is Level 1 (unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side (e.g., GND or return path); defines polarity for unidirectional clamping. |
| Cathode | Clamping output / Surge current sink | Marked by band; connected to protected line (e.g., 130 V rail); conducts surge current to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| Fast response time <1.0 ps | Enables suppression of ESD and fast-edge transients before propagation into sensitive analog or digital circuitry. |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive load-dump and supply-line transient immunity without external filtering or derating. |
| DO-214AC (SMA) footprint | Standardized 2-pin SMD outline compatible with high-speed pick-and-place and reflow profiles (J-STD-020 Level 1). |
Applications
| Automotive Power Rail Protection | Industrial DC/DC Converter Input |
|---|---|
|
Use Scenario: Protecting 12 V/24 V/48 V battery-fed ECUs against load dump and jump-start surges per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping transients before they reach DC/DC controller ICs. Use Value: Limits peak voltage to ≤209 V during 400 W pulses, preventing latch-up or gate oxide damage in upstream regulators. |
Use Scenario: Safeguarding isolated DC/DC converter primary-side inputs in programmable logic controllers and motor drives. IC Role / Device Role / Timing Role: Standoff protector on 130 V intermediate bus, absorbing repetitive switching noise and line disturbances. Use Value: Maintains <1 µA leakage at 130 V, avoiding unnecessary quiescent current draw while enabling fast recovery after clamping. |
| LED Driver Power Stage | Telecom Power Interface |
|
Use Scenario: Overvoltage protection for constant-current LED drivers in streetlight and signage applications exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-stage TVS on high-voltage DC bus (e.g., 130 V string supply), shunting energy to ground during line transients. Use Value: Withstands 150 °C junction temperature, supporting operation inside thermally constrained outdoor enclosures. |
Use Scenario: Front-end surge suppression on -48 V telecom power feeds subject to induced surges from nearby AC lines or lightning. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, protecting hot-swap controllers and PMBus interface ICs. Use Value: Delivers 209 V clamping at 1.5 A with sub-µA leakage, preserving accuracy of precision current-sense amplifiers downstream. |
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 SMAJ130A | Identical electrical specs, same DO-214AC package, RoHS/halogen-free compliant; minor differences in IR test condition (1 mA vs. 1 V). | No functional difference in automotive or industrial clamping use cases; validated for identical ISO 7637-2 pulses. | Select for dual-source procurement or regional inventory flexibility without design change. |
| ON Semiconductor SMAJ130A | Same VWM, VBR, VC, and PPPM; slight variation in thermal resistance (RθJA = 70 °C/W vs. TSC's 65 °C/W). | Compatible in all PCB layouts; marginally higher junction temperature rise under sustained 1 W dissipation. | Prefer where existing ON Semi qualification or supply chain alignment exists; no layout or reliability impact. |
Compared with Littelfuse and ON Semiconductor versions, the Taiwan Semiconductor SMAJ130A offers identical clamping performance and package compatibility but with a slightly lower thermal resistance, enabling tighter thermal margins in high-density power modules.
Availability
SMAJ130A is available at Aetrix Electronics and suitable for automotive electronics, industrial DC/DC converters, and LED driver designs requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for SMAJ130A 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 power management devices.
The SMAJ series was developed specifically for high-reliability transient suppression in automotive and industrial power systems, emphasizing ISO 7637-2 compliance, MSL Level 1 handling, and robust glass-passivated junctions.
FAQ
What is the maximum clamping voltage of the SMAJ130A under standard test conditions?
The SMAJ130A has a maximum clamping voltage (VC) of 209 V when subjected to a 10/1000 µs waveform at 1.5 A peak impulse current (IPPM). This value is measured per JEDEC standards and guarantees predictable overvoltage limiting for protected circuits - critical for ensuring downstream ICs remain within absolute maximum ratings during surge events. The SMAJ130A maintains this clamping performance across its full operating temperature range.
Is the SMAJ130A suitable for bidirectional transient protection?
No, the SMAJ130A is a unidirectional TVS diode, intended only for protection of DC rails with defined polarity. Its cathode band marking indicates polarity-sensitive installation. For bidirectional applications (e.g., AC lines or data buses), a bipolar variant such as SMAJ130CA must be used. The SMAJ130A does not conduct in forward bias beyond typical diode drop and lacks symmetrical clamping in both directions.
Does the SMAJ130A meet automotive qualification standards?
Yes, the SMAJ130A meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for 12 V and 24 V automotive power networks. It is also qualified to AEC-Q200 Class 3 (–40 °C to +105 °C ambient) per Taiwan Semiconductor's product family documentation. The SMAJ130A's 150 °C maximum junction temperature further supports under-hood deployment when properly heatsinked.
What is the reverse leakage current specification for the SMAJ130A at its working voltage?
The SMAJ130A exhibits a maximum reverse leakage current (IR) of 1 µA when biased at its rated working stand-off voltage (VWM) of 130 V and tested at 25 °C. This ultra-low leakage minimizes standby power loss and avoids loading high-impedance sensing nodes - a key advantage in battery-powered or energy-sensitive systems using the SMAJ130A.
Can the SMAJ130A be used in automated SMT assembly processes?
Yes, the SMAJ130A uses the DO-214AC (SMA) package with matte tin-plated leads compliant with J-STD-002 for solderability, and is rated MSL Level 1 per J-STD-020 - meaning unlimited floor life before reflow. Its standardized footprint and thermal profile compatibility make the SMAJ130A fully suitable for high-speed pick-and-place and lead-free reflow assembly without special handling or baking requirements.
SMAJ130A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- SMAJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 130V
- Voltage - Breakdown (Min):
- 144V
- Voltage - Clamping (Max) @ Ipp:
- 209V
- Current - Peak Pulse (10/1000µs):
- 1.5A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ130A FAQ
1.How can I place an order for SMAJ130A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ130A 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 SMAJ130A reliable?
The price and inventory of SMAJ130A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ130A is usually 5 days.
3.What payment methods are accepted for SMAJ130A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ130A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ130A?
SMAJ130A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ130A 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 SMAJ130A?
For technical support, including SMAJ130A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ130A requirements.
6.How does Aetrix verify that SMAJ130A is sourced from the original manufacturer or authorized distributors?
All SMAJ130A 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 SMAJ130A meets industry standards.
7.What is the process for return or replacement of SMAJ130A?
All SMAJ130A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ130A, 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 SMAJ130A part is unused and in its original packaging.
Return procedure for SMAJ130A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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