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onsemi 1SMB130AT3
- Part No.:
- 1SMB130AT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1SMB130AT3.pdf
- Description:
- TVS DIODE 130VWM 209VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:6,732
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Product details
Overview
1SMB130AT3 from ON Semiconductor is a unidirectional 600 W peak power Zener transient voltage suppressor (TVS) designed for parallel overvoltage protection of sensitive electronics. It features a 130 V working peak reverse voltage (VRWM), 209 V maximum clamping voltage (VC) at 2.9 A peak pulse current (IPP), and sub-1 ns response time - deployed in industrial power supplies, automotive ECUs, and communication interface lines.
For engineers reviewing the 1SMB130AT3 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ system DC bus voltage, VC margin below IC absolute maximum ratings, UL 497B certification for isolated loop protection, and SMB package thermal performance under repetitive surge conditions.
Technical Context
The 1SMB130AT3 operates as a silicon avalanche diode with Zener breakdown behavior, triggered when reverse voltage exceeds its 147–159 V breakdown range (VBR @ IT = 1 mA). Its low zener impedance and fast carrier avalanche mechanism enable clamping within <1 ns, minimizing overshoot during ESD or lightning-induced transients.
It is rated for 600 W non-repetitive peak power (10/1000 µs waveform), with thermal derating to 0.55 W at TA = 25°C and junction-to-ambient thermal resistance of 226 °C/W. The device sustains 100 A forward surge current (8.3 ms half-sine) and exhibits <5 µA leakage above 10 V at VRWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 130 V - Maximum continuous reverse operating voltage before clamping begins; must exceed circuit's max DC or peak AC voltage. |
| VBR (min/typ/max) | 147 / 151.5 / 159 V @ 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPP | 209 V @ 2.9 A - Maximum clamped voltage during 10/1000 µs surge; defines worst-case stress on downstream components. |
| PPK | 600 W - Peak transient energy absorption capability; validated per IEC 61000-4-5 Level 4 surge testing conditions. |
| Response Time | <1 ns - Avalanche initiation delay; critical for protecting high-speed interfaces (e.g., RS-485, CAN FD) from nanosecond-scale transients. |
| Leakage Current | <5 µA @ VRWM - Negligible standby power loss; avoids signal integrity degradation in high-impedance sensing or bias networks. |
| UL Recognition | UL 497B QVGQ2 - Certified for isolated loop circuit protection; meets dielectric withstand, endurance, and strike voltage requirements for telecom and industrial safety compliance. |
Pinout & Package
Package: SMB (Case 403A), surface-mount, void-free thermosetting plastic with modified L-bend leads and cathode polarity band. Dimensions: 4.32 mm × 2.13 mm × 2.26 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during clamping | Connected to protected line (e.g., CAN_H); conducts surge current to ground when VRWM exceeded. |
| Cathode | Reference terminal / clamping node | Connected to system ground or low-impedance return path; defines clamping reference and enables unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Withstands 10/1000 µs surges up to 2.9 A without degradation - sufficient for IEC 61000-4-5 Level 4 (4 kV line-to-ground) testing. |
| UL 497B recognition | Validated for isolated loop protection including strike voltage, endurance, and dielectric tests - eliminates need for additional safety certification effort. |
| ESD rating >16 kV HBM | Robustness against human-body-model electrostatic discharge - protects ports exposed to field service or handling without external shielding. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Tight voltage margin between breakdown and clamping ensures minimal overvoltage exposure to protected ICs during surge events. |
| Pb-free (G suffix) packaging | RoHS-compliant Surmetic SMB package with solderable leads and 260°C reflow tolerance - compatible with standard SMT assembly processes. |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) CAN Bus |
|---|---|
|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +24 V rail and chassis ground to clamp transients before they reach DC/DC converter input. Use Value: Limits voltage to ≤209 V during 100 A/100 ms load dump, preventing MOSFET gate oxide rupture and maintaining regulator stability. |
Use Scenario: CAN_H/CAN_L lines in BCM exposed to ESD and battery disconnect transients in 12 V vehicle architecture. IC Role / Device Role / Timing Role: Paired 1SMB130AT3 (CAN_H–GND) and 1SMB130AT3 (CAN_L–GND) provide asymmetric overvoltage clamping. Use Value: Clamps common-mode spikes to <210 V while preserving CAN differential signaling integrity; UL 497B supports functional safety documentation. |
| Telecom Line Interface Surge Protection | Medical Equipment Isolated Data Link |
|
Use Scenario: RS-485 transceiver port on remote telemetry unit connected to outdoor sensor network cables. IC Role / Device Role / Timing Role: Single 1SMB130AT3 on each data line (A and B) referenced to isolated ground plane to absorb induced lightning surges. Use Value: Sub-1 ns response prevents data corruption during 1 kV/µs transients; 150 pF typical capacitance avoids signal edge degradation at 10 Mbps. |
Use Scenario: SPI isolation barrier between patient-connected analog front-end and digital processing module in portable ultrasound device. IC Role / Device Role / Timing Role: 1SMB130AT3 placed on isolated side of digital isolator to protect downstream MCU GPIOs from coupling transients. Use Value: UL 497B certification validates compliance with IEC 60601-1 creepage/clearance and surge immunity requirements for medical-grade isolation barriers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ130A | Same VRWM (130 V), identical SMB package, but lower PPK (600 W same), higher VC (219 V @ 2.7 A) and higher IR (10 µA @ VRWM). | Marginally higher clamping voltage reduces protection margin for 3.3 V or 5 V logic interfaces; acceptable where 10 µA leakage is tolerable. | Select SMBJ130A only if legacy design uses SMBJ footprint and minor VC increase is acceptable; verify downstream IC VMAX margin. |
| 1.5SMC130A | Higher PPK (1500 W), DO-214AB package (larger, 7.1 mm × 6.2 mm), same VRWM (130 V), lower VC (213 V @ 7.0 A). | Requires PCB layout change; suited for higher-energy surges (e.g., AC mains input) where SMB thermal limits are insufficient. | Choose 1.5SMC130A when surge energy exceeds 600 W capability or ambient temperature exceeds 75°C - not a drop-in replacement. |
Compared with SMBJ130A, the 1SMB130AT3 offers tighter clamping (209 V vs. 219 V) and lower leakage (<5 µA vs. 10 µA), improving protection margin for low-voltage ICs; compared with 1.5SMC130A, it provides identical VRWM in a smaller SMB footprint but with lower surge energy handling - ideal for space-constrained industrial PCBs.
Availability
1SMB130AT3 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom line interfaces, and medical isolated data links requiring stable component supply, RoHS compliance, and UL 497B-certified surge protection.
Supply support for 1SMB130AT3 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
ON Semiconductor (now onsemi) is a global semiconductor supplier specializing in power management, analog, sensors, and discrete devices for automotive, industrial, and cloud power applications.
The 1SMB130AT3 belongs to the SMB series of unidirectional TVS diodes engineered for robust, cost-effective board-level transient suppression in harsh environments - emphasizing high surge capability, low clamping ratio, and safety certification readiness.
FAQ
What is the maximum clamping voltage of the 1SMB130AT3 under standard surge conditions?
The 1SMB130AT3 has a maximum clamping voltage (VC) of 209 V when subjected to its rated peak pulse current of 2.9 A (10/1000 µs waveform). This value is measured per Figure 2 in the datasheet and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Does the 1SMB130AT3 meet UL safety standards for industrial equipment?
Yes, the 1SMB130AT3 carries UL 497B recognition (File #E210057, category QVGQ2) for isolated loop circuit protection. It has passed strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing - making it suitable for use in industrial controllers, PLCs, and other safety-critical systems requiring certified transient suppression.
Can the 1SMB130AT3 be used in bidirectional protection configurations?
No, the 1SMB130AT3 is a unidirectional TVS diode and must be used with correct polarity - cathode to ground, anode to protected line. For bidirectional protection (e.g., AC lines or differential buses), ON Semiconductor offers the 1SMB130AT3's counterpart 1SMB130CAT3, which is explicitly designed for symmetrical clamping in both directions.
What is the thermal derating behavior of the 1SMB130AT3 above 25°C ambient?
The 1SMB130AT3 has a DC power dissipation rating of 0.55 W at TA = 25°C, derating linearly by 4.4 mW/°C above that temperature. At 75°C ambient, its usable DC power drops to 0.33 W. This derating applies to continuous reverse leakage power - not peak surge energy - and must be considered in thermally constrained enclosures or high-temperature operating environments.
Is the 1SMB130AT3 compatible with lead-free reflow soldering processes?
Yes, the 1SMB130AT3 (with "G" suffix) is Pb-free and qualified for lead-free reflow soldering at 260°C for 10 seconds. Its Surmetic SMB package uses corrosion-resistant, readily solderable leads and complies with JEDEC J-STD-020 moisture sensitivity level (MSL) requirements - supporting standard SMT assembly without special handling.
1SMB130AT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 2.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 150pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
1SMB130AT3 FAQ
1.How can I place an order for 1SMB130AT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1SMB130AT3 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 1SMB130AT3 reliable?
The price and inventory of 1SMB130AT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1SMB130AT3 is usually 5 days.
3.What payment methods are accepted for 1SMB130AT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1SMB130AT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1SMB130AT3?
1SMB130AT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1SMB130AT3 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 1SMB130AT3?
For technical support, including 1SMB130AT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1SMB130AT3 requirements.
6.How does Aetrix verify that 1SMB130AT3 is sourced from the original manufacturer or authorized distributors?
All 1SMB130AT3 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 1SMB130AT3 meets industry standards.
7.What is the process for return or replacement of 1SMB130AT3?
All 1SMB130AT3 units undergo pre-shipment inspection (PSI). If there is an issue with 1SMB130AT3, 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 1SMB130AT3 part is unused and in its original packaging.
Return procedure for 1SMB130AT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1SMB130AT3 Tags
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