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Microchip Technology SM1612E3/TR13
- Part No.:
- SM1612E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SM1612E3/TR13.pdf
- Description:
- TVS DIODE 12VWM 24VC 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:8,884
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Product details
Overview
SM1612E3/TR13 from Microsemi (now Microchip) is a unidirectional 8-line transient voltage suppressor (TVS) diode array in SO-16 package, rated for 300 W peak pulse power (8/20 µs), 12 V standoff voltage (VWM), and clamping voltage of 19 V at 1 A. It protects 3.3–24 V digital interfaces including DRAM, SRAM, and low-voltage I/O transceivers against ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges.
For engineers reviewing the SM1612E3/TR13 datasheet, SM1612E3/TR13 pinout, SM1612E3/TR13 application, or SM1612E3/TR13 equivalent, key selection criteria include VWM ≥ circuit operating voltage, clamping performance under 1–5 A transient current, SO-16 thermal and layout compatibility, and leakage current ≤1 µA at 12 V.
Technical Context
This TVS array implements eight independent unidirectional avalanche diode pairs between I/O lines and ground, with each channel featuring a 12 V standoff and 13.3–19 V breakdown/clamp profile. It operates across –55°C to +150°C and meets UL 94V-0 flammability rating.
The device uses silicon planar junction technology with molded SO-16 encapsulation and pin 1 identified by dot marking. Its 8/20 µs pulse response supports high-energy surge suppression without latch-up or degradation under repeated transients below 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 12 V - Maximum continuous operating voltage before conduction begins; matches 12 V rail or interface signaling levels. |
| Breakdown Voltage (VBR) | 13.3 V min @ 1 mA - Ensures reliable turn-on above normal operating margin while avoiding false triggering. |
| Clamping Voltage (VC) | 19 V @ 1 A - Limits transient voltage seen by protected ICs during 8/20 µs surge, preserving logic integrity. |
| Peak Pulse Power | 300 W @ 8/20 µs - Sustains high-energy ESD/EFT events without failure; validated per IEC test waveforms. |
| Leakage Current (ID) | ≤1 µA @ VWM - Negligible DC loading on 12 V signal paths; avoids interference with low-power CMOS inputs. |
| Capacitance (C) | 440 pF @ 0 V, 1 MHz - Compatible with low-speed to medium-speed digital buses (e.g., UART, SPI, I²C) without signal distortion. |
| Operating Temperature | –55°C to +150°C - Supports industrial and automotive under-hood environments without derating. |
Pinout & Package
Molded SO-16 surface-mount package (JEDEC MS-013AC), 10.10 × 4.01 mm body, 1.27 mm pitch, pin 1 marked by dot on top surface. Encapsulation meets UL 94V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 9, 11, 13, 15 | I/O Line Anode (Input) | Each connects to one protected data/signal line; conducts transient current toward ground when VIO exceeds VBR. |
| 2, 4, 6, 8, 10, 12, 14, 16 | Cathode / Ground Return | Common cathode connection shared across all 8 channels; must be routed to low-inductance ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional protection per line | Enables DC-biased signal paths (e.g., 12 V RS-485, CAN, or sensor outputs) without reverse conduction issues. |
| Electrically isolated channels | Prevents cross-talk or fault propagation between protected lines; critical for multi-channel I/O isolation. |
| SO-16 footprint compatibility | Supports automated SMT assembly and rework using standard SOIC-16 land patterns and stencil designs. |
| UL 94V-0 rated encapsulation | Meets flame-retardant requirements for industrial control panels and safety-critical embedded systems. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 12 V analog sensor inputs and digital status lines in programmable logic controllers exposed to field wiring transients. IC Role / Device Role / Timing Role: Unidirectional TVS array clamping fast-rising surges before they reach ADC front-ends or microcontroller GPIOs. Use Value: Maintains signal fidelity under IEC 61000-4-4 EFT bursts up to ±2 kV while adding <440 pF capacitance per channel. | Use Scenario: Safeguarding LIN bus transceiver pins and 12 V power-supply monitoring lines in body electronics modules. IC Role / Device Role / Timing Role: Transient suppressor placed at connector interface to shunt secondary lightning-induced surges away from ASICs. Use Value: Withstands 300 W 8/20 µs pulses without degradation, enabling compliance with ISO 16750-2 load dump immunity requirements. |
| Medical Diagnostic Equipment | Point-of-Sale Terminal Interfaces |
Use Scenario: Shielding low-voltage serial communication ports (RS-232/485) in imaging devices from ESD events during cable handling. IC Role / Device Role / Timing Role: Board-level ESD clamp meeting IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) requirements. Use Value: 19 V clamping at 1 A ensures downstream logic remains within safe operating area during human-body-model discharges. | Use Scenario: Protecting USB, keypad, and display interface lines in retail terminals subject to frequent operator ESD exposure. IC Role / Device Role / Timing Role: Eight-channel unidirectional suppressor covering multiple low-speed data paths with single-component integration. Use Value: Reduces BOM count vs. discrete TVS diodes while maintaining ≤1 µA leakage to preserve battery-backed real-time clock operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Single-line SMA package; 12 V VWM, 19.9 V VC @ 1 A; 400 W peak power | Requires 8 separate placements; higher board area and assembly cost | Use when space allows discrete placement or when mixed voltage rails require different VWM per line |
| SP1003-010 | 8-line unidirectional SO-16; 12 V VWM, 23 V VC @ 1 A; 350 W peak power; 150 pF capacitance | Lower capacitance enables higher-speed interfaces (e.g., USB 2.0); slightly higher clamping | Prefer for noise-sensitive or higher-frequency applications where <200 pF is mandatory |
Compared with SMAJ12A and SP1003-010, SM1612E3/TR13 offers balanced clamping (19 V), moderate capacitance (440 pF), and integrated 8-line protection in standard SO-16 - ideal for cost-sensitive, medium-speed industrial I/O where layout simplicity and thermal coupling matter.
Availability
SM1612E3/TR13 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical diagnostic equipment requiring stable component supply and long-term obsolescence management.
Supply support for SM1612E3/TR13 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
Microsemi (acquired by Microchip Technology in 2018) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The SM16XX TVSarray™ series was designed specifically for board-level transient suppression in harsh electromagnetic environments, targeting I/O protection for legacy and modern low-voltage digital interfaces with minimal footprint overhead.
FAQ
What is the standoff voltage rating of SM1612E3/TR13?
The SM1612E3/TR13 has a standoff voltage (VWM) of 12 V, meaning it remains non-conductive under normal 12 V DC operation and begins clamping only when transient voltages exceed its breakdown threshold of 13.3 V minimum. This rating ensures compatibility with 12 V logic rails and sensor interfaces without leakage or false triggering.
Is SM1612E3/TR13 unidirectional or bidirectional?
SM1612E3/TR13 is a unidirectional TVS array, as confirmed by its part number suffix "E3" (non-C variant) and electrical characteristics table showing single-polarity clamping behavior. It protects positive-going transients on I/O lines referenced to ground and is not intended for AC-coupled or bipolar signal paths.
What is the maximum clamping voltage of SM1612E3/TR13 at 5 A?
The SM1612E3/TR13 has a maximum clamping voltage (VC) of 24 V at 5 A for an 8/20 µs waveform, as specified in the Electrical Characteristics table. This value defines the worst-case voltage imposed on protected circuitry during high-current surge events, ensuring downstream components remain within safe operating limits.
Does SM1612E3/TR13 meet IEC 61000-4-2 ESD immunity standards?
Yes, SM1612E3/TR13 is designed to protect circuits against electrostatic discharge per IEC 61000-4-2, supporting system-level ESD immunity up to ±15 kV (air) and ±8 kV (contact) when properly laid out with low-inductance grounding. Its 300 W peak power rating and fast response time enable robust clamping during nanosecond-scale ESD events.
What package type and pin count does SM1612E3/TR13 use?
SM1612E3/TR13 uses a molded SO-16 surface-mount package with 16 pins, conforming to JEDEC MS-013AC dimensions (10.10 × 4.01 mm). Pin 1 is marked by a dot on the top surface, and the device employs an 8-line unidirectional configuration with odd-numbered pins as I/O anodes and even-numbered pins as common cathodes.
SM1612E3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 440pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
SM1612E3/TR13 FAQ
1.How can I place an order for SM1612E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM1612E3/TR13 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 SM1612E3/TR13 reliable?
The price and inventory of SM1612E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM1612E3/TR13 is usually 5 days.
3.What payment methods are accepted for SM1612E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM1612E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM1612E3/TR13?
SM1612E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM1612E3/TR13 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 SM1612E3/TR13?
For technical support, including SM1612E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM1612E3/TR13 requirements.
6.How does Aetrix verify that SM1612E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SM1612E3/TR13 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 SM1612E3/TR13 meets industry standards.
7.What is the process for return or replacement of SM1612E3/TR13?
All SM1612E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SM1612E3/TR13, 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 SM1612E3/TR13 part is unused and in its original packaging.
Return procedure for SM1612E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM1612E3/TR13 Tags
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