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Taiwan Semiconductor Corporation 1.5SMC62A
- Part No.:
- 1.5SMC62A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC62A.pdf
- Description:
- TVS DIODE 53VWM 85VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,517
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Product details
Overview
1.5SMC62A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 58.9–65.1 V breakdown voltage (VBR), 53.0 V working stand-off voltage (VWM), 85.0 V maximum clamping voltage (VC) at 18 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 µs waveform - deployed in telecom interface protection and industrial I/O circuits.
For engineers reviewing the 1.5SMC62A datasheet, 1.5SMC62A pinout, 1.5SMC62A application, or 1.5SMC62A equivalent, this device is selected for robust ESD immunity (IEC 61000-4-2 Level 4), fast sub-1 ps response, low leakage (<1 µA at 53.0 V), and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and switching transients.
Technical Context
The 1.5SMC62A operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve stable breakdown behavior and low thermal resistance (RθJC = 15 °C/W). Its clamping action begins at VBR ≥ 58.9 V and limits transient energy within 10/1000 µs pulses up to 18 A while maintaining VC ≤ 85.0 V - ensuring downstream ICs remain below absolute maximum ratings during surge events.
Thermally rated for continuous operation from –55 °C to +150 °C, it supports high-reliability mounting on automated SMT lines using DO-214AB (SMC) package with matte tin-plated leads compliant to J-STD-002. Polarity is marked by cathode band; moisture sensitivity level is J-STD-020 Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 58.9 V / 65.1 V - defines reliable avalanche initiation threshold under 1 mA test current; ensures consistent turn-on across temperature and unit variation |
| VWM | 53.0 V - maximum continuous DC or RMS voltage the device blocks without significant leakage; sets safe operating margin below VBR |
| VC@IPPM | 85.0 V @ 18 A - clamped voltage during worst-case 10/1000 µs surge; determines protected circuit's maximum transient exposure |
| PPK | 1500 W - peak pulse power handling capability; enables protection against high-energy transients like ISO 7637-2 Pulse 5a |
| IR@VWM | <1 µA - ultra-low reverse leakage at rated stand-off voltage; avoids unnecessary power loss or bias drift in precision analog rails |
| TJ max | +150 °C - maximum junction temperature; supports operation in enclosed industrial enclosures or under sustained power dissipation |
| RθJA | 50 °C/W - junction-to-ambient thermal resistance; informs PCB copper area requirements for thermal management in high-duty-cycle applications |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Case meets UL 94V-0 flammability rating; terminals are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/line side of protected circuit | Connected to source of transient threat (e.g., power input or signal line); conducts surge current toward ground when clamped |
| Cathode | Ground reference / return path | Connected to system ground plane; establishes polarity-sensitive clamping direction and defines VWM and VBR reference |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics over lifetime and temperature; eliminates parameter drift due to surface contamination or humidity ingress |
| Sub-1 ps response time | Clamps ESD events before sensitive logic or analog front-ends can be damaged - critical for USB, RS-485, and Ethernet PHY interfaces |
| ISO 7637-2 compliance | Validated for automotive load-dump (Pulse 5a), supply interruption (Pulse 2b), and coupled transients (Pulses 1, 3a, 3b) - suitable for 12 V/24 V vehicle ECUs |
| J-STD-020 Level 1 moisture rating | Enables standard reflow without pre-bake; reduces manufacturing cost and process complexity in high-volume SMT assembly |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU; supports green electronics initiatives and export compliance for global OEM programs |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers from inductive kickback and field-wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between field terminal and input buffer IC (e.g., SN74LVC1G17), shunting >1 kV transients to chassis ground. Use Value: Maintains VC ≤ 85.0 V during 18 A surges, keeping input logic below its 100 V abs-max rating and eliminating need for secondary TVS or series impedance. |
Use Scenario: Safeguarding LIN bus transceivers and sensor supply lines in BCMs exposed to battery disconnect/load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS on 12 V rail upstream of LDO regulators and LIN PHY ICs (e.g., TJA1020), activated within <1 ps of overvoltage onset. Use Value: Withstands ISO 7637-2 Pulse 5a (75 V/350 ms) energy via thermal mass and 1500 W peak rating, preventing regulator latch-up or PHY damage. |
| Telecom Power Feeding Interface | POS Terminal Power Input |
Use Scenario: Protecting PoE-powered remote units (e.g., IP cameras) from induced surges on 48 V DC feed lines running alongside AC mains. IC Role / Device Role / Timing Role: Standoff-rated TVS on DC input stage before DC-DC converter, absorbing common-mode transients coupled from adjacent cables. Use Value: 53.0 V VWM allows full utilization of 48 V ±10% nominal range while clamping to 85.0 V - compatible with 100 V-rated input capacitors and MOSFETs. |
Use Scenario: Securing 5 V/12 V power inputs of point-of-sale terminals against accidental AC mains contact or ESD discharge during cable insertion. IC Role / Device Role / Timing Role: Final-stage TVS on board-level power entry, placed immediately after fuse and before buck converter, acting as last-line defense. Use Value: Sub-1 µA leakage at 53.0 V prevents standby current increase; 85.0 V clamping protects 5 V logic rails via local decoupling and ensures no brownout during 8 kV contact ESD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A (Bourns) | Same DO-214AA (SMB) package; 64 V VBR min (64–70.9 V); 1000 W PPK; higher VC = 103 V @ 9.5 A | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a where 1500 W is required | Select only if space-constrained and surge energy is limited to IEC 61000-4-5 Level 3 (0.5 kV/1.0 kV) |
| 1.5KE68A (ON Semiconductor) | Through-hole DO-15 package; identical VBR (64.6–71.4 V) and VC (100 V); same 1500 W rating but higher RθJA (~65 °C/W) | Requires manual or wave soldering; incompatible with fully automated SMT lines; less effective thermal dissipation in dense layouts | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency |
Compared with SMBJ64A and 1.5KE68A, the 1.5SMC62A delivers superior surge robustness in SMT form factor - combining 1500 W capability, 85.0 V clamping, and Level 1 moisture rating - making it optimal for high-volume automotive and industrial applications demanding both reliability and manufacturability.
Availability
1.5SMC62A is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom power feeding interfaces requiring stable component supply, long-term lifecycle support, and RoHS/halogen-free compliance.
Supply support for 1.5SMC62A 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, rectifiers, and MOSFETs - headquartered in Hsinchu Science Park with global distribution and AEC-Q200-qualified product lines.
The 1.5SMCxx(A) series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial automation, and communications infrastructure where reliability, surge margin, and SMT compatibility are non-negotiable.
FAQ
What is the breakdown voltage range of the 1.5SMC62A?
The 1.5SMC62A has a guaranteed breakdown voltage (VBR) range of 58.9 V to 65.1 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range ensures consistent avalanche turn-on across production lots and temperature extremes, enabling predictable clamping behavior in 24 V and 48 V systems where margin above nominal rail is critical.
Is the 1.5SMC62A unidirectional or bidirectional?
The 1.5SMC62A is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix. It functions as a polarity-sensitive clamp - conducting only when cathode is more positive than anode - and must be oriented with cathode tied to ground or the lower-potential rail. Bidirectional variants require explicit "CA" designation (e.g., 1.5SMC62CA).
What is the maximum clamping voltage of the 1.5SMC62A under surge conditions?
The 1.5SMC62A clamps to a maximum of 85.0 V at 18 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case transient events - directly informing selection of downstream IC voltage ratings and decoupling strategy.
Does the 1.5SMC62A meet automotive transient immunity standards?
Yes, the 1.5SMC62A meets ISO 7637-2 requirements for Pulses 1, 2a, 2b, 3a, and 3b - covering key automotive threats including load dump simulation, supply interruption, and coupled noise. Its 1500 W rating and 85.0 V clamping make it suitable for 12 V and 24 V ECU power rail protection, though Pulse 5a (load dump) requires verification of system-level energy absorption capacity.
What packaging and reel quantity is offered for the 1.5SMC62A?
The 1.5SMC62A is supplied in DO-214AB (SMC) package on 3,000-unit tape-and-reel format, optimized for high-speed pick-and-place assembly. The package features matte tin-plated leads compliant with J-STD-002 solderability requirements and J-STD-020 Level 1 moisture sensitivity - enabling standard reflow without pre-baking in automated SMT lines.
1.5SMC62A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 53V
- Voltage - Breakdown (Min):
- 58.9V
- Voltage - Clamping (Max) @ Ipp:
- 85V
- Current - Peak Pulse (10/1000µs):
- 18A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC62A FAQ
1.How can I place an order for 1.5SMC62A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC62A 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 1.5SMC62A reliable?
The price and inventory of 1.5SMC62A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC62A is usually 5 days.
3.What payment methods are accepted for 1.5SMC62A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC62A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC62A?
1.5SMC62A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC62A 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 1.5SMC62A?
For technical support, including 1.5SMC62A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC62A requirements.
6.How does Aetrix verify that 1.5SMC62A is sourced from the original manufacturer or authorized distributors?
All 1.5SMC62A 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 1.5SMC62A meets industry standards.
7.What is the process for return or replacement of 1.5SMC62A?
All 1.5SMC62A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC62A, 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 1.5SMC62A part is unused and in its original packaging.
Return procedure for 1.5SMC62A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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