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Microchip Technology SM1615/TR13
- Part No.:
- SM1615/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SM1615/TR13.pdf
- Description:
- TVS DIODE 15VWM 30VC 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,040
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Product details
Overview
SM1615/TR13 from Microsemi (now Microchip Technology) 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), 15 V standoff voltage (VWM), and clamping ≤30 V at 5 A, designed to protect 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 SM1615/TR13 datasheet, SM1615/TR13 pinout, SM1615/TR13 application, or SM1615/TR13 equivalent, key selection criteria include standoff voltage matching system operating voltage, clamping performance under 5 A surge, SO-16 footprint compatibility, bidirectional vs. unidirectional configuration, and capacitance impact on high-speed signal integrity.
Technical Context
The SM1615/TR13 integrates eight independent unidirectional TVS diodes in a single SO-16 package, each with a minimum breakdown voltage of 16.7 V and maximum clamping voltage of 30 V at 5 A. It operates across –55 °C to +150 °C and meets UL 94V-0 flammability rating.
Designed for board-level protection, it provides electrically isolated suppression per line without shared cathode/anode paths, enabling independent protection of mixed-voltage I/Os. Its 400 pF typical capacitance at 1 MHz and 0 V bias is specified for signal lines where bandwidth up to ~100 MHz must be preserved.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 15 V - Matches nominal 15 V rail or higher-voltage logic interfaces requiring margin above continuous operating voltage |
| Breakdown Voltage (VBR) | 16.7 V min - Ensures reliable conduction onset only after normal operating voltage is exceeded |
| Clamping Voltage (VC) | 30 V max @ 5 A - Limits transient overvoltage to safe level for 24 V-rated components during worst-case surge |
| Peak Pulse Power | 300 W @ 8/20 µs - Sustains standardized lightning/EFT surge energy without degradation |
| Capacitance (1 MHz, 0 V) | 400 pF typical - Compatible with medium-speed digital interfaces (e.g., UART, SPI, parallel memory buses) |
| Leakage Current (ID) | 1 µA max @ 15 V - Negligible DC loading on protected signal lines during normal operation |
| Operating Temperature | –55 °C to +150 °C - Supports industrial and automotive under-hood applications |
Pinout & Package
Molded SO-16 surface-mount package, UL 94V-0 rated, 0.128 g weight, pin #1 identified by dot marking on top surface. Tape-and-reel packaging per EIA-481-1-A (2,500 pcs/reel, optional); carrier tubes hold 48 pcs (standard).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 9, 11, 13, 15 | Anode of Line 1–8 | Input side for each protected signal line; connects to I/O trace prior to protected device |
| 2, 4, 6, 8, 10, 12, 14, 16 | Cathode (common ground) | Shared cathode bus tied to system ground plane; enables compact layout with single ground return |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional 8-line architecture | Enables discrete protection of eight independent signal paths with no cross-talk or shared failure modes |
| 300 W peak pulse rating (8/20 µs) | Withstands IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge events without parametric shift |
| 15 V standoff voltage | Allows direct use on 12–15 V systems without derating, preserving noise margin versus 3.3/5 V variants |
| SO-16 surface-mount package | Standard footprint compatible with automated assembly and reflow profiles; pin spacing supports 0.050″ pitch routing |
| UL 94V-0 encapsulation | Meets flame-retardancy requirements for industrial control and transportation electronics enclosures |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Protection of 12–24 V analog input channels and CAN/LIN transceiver data lines against load dump and ESD in factory automation cabinets. IC Role / Device Role / Timing Role: Board-level TVS array providing primary surge shunt path before signal conditioning circuitry. Use Value: Clamping ≤30 V ensures downstream op-amps and ADCs remain within absolute maximum ratings during 1 kV EFT bursts. | Use Scenario: Safeguarding microcontroller GPIOs and LIN bus pins in door modules exposed to human-body ESD and battery transients. IC Role / Device Role / Timing Role: Unidirectional transient suppressor placed at connector interface to divert fast-rising ESD pulses to chassis ground. Use Value: 1 µA leakage preserves low-power sleep current budget; 400 pF capacitance avoids signal edge degradation on 20 kbps LIN signals. |
| Telecom Power Supply Monitoring | Medical Diagnostic Equipment Interfaces |
Use Scenario: Protecting voltage sense lines and enable inputs on 15 V DC-DC converters used in base station power systems. IC Role / Device Role / Timing Role: Standoff-matched TVS preventing false triggering of undervoltage lockout during conducted surges. Use Value: 15 V VWM aligns precisely with converter feedback threshold, avoiding nuisance shutdown during transient events. | Use Scenario: Shielding RS-485 and parallel bus connections between imaging subsystems and main controller in MRI-compatible devices. IC Role / Device Role / Timing Role: Isolated-line TVS array ensuring patient-safety isolation barriers remain intact during ESD discharge. Use Value: Electrically isolated protection per line prevents coupling between diagnostic data channels during multi-pin ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Single-line DO-214AC package; 15 V VWM, 24.4 V VBR, 24.4 V VC @ 12.9 A | Requires eight discrete placements; higher clamping at lower current but no integrated multi-line solution | Select when board space allows discrete placement and higher surge current per line is required |
| SM1615C/TR13 | Bidirectional variant (marked MBH); same VWM/VBR/VC, symmetric clamping for AC-coupled or bidirectional buses | Required for USB, RS-485, or other differential or alternating signal paths | Select when protecting bidirectional communication lines where polarity reversal must be suppressed |
Compared with SMAJ15A and SM1615C/TR13, the SM1615/TR13 delivers optimized board-level integration for unidirectional 15 V systems-reducing component count by 7 vs. discrete diodes while maintaining precise standoff alignment and predictable clamping behavior across all eight lines.
Availability
SM1615/TR13 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and telecom power supply monitoring requiring stable component supply and long-term production continuity.
Supply support for SM1615/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 ICs for aerospace, defense, and industrial markets.
The SM16XX TVSarray™ series was developed to provide standardized, high-density board-level ESD/EFT protection for legacy and emerging digital interfaces, emphasizing thermal robustness, repeatable clamping, and manufacturable SOIC packaging.
FAQ
What is the standoff voltage specification for SM1615/TR13?
The SM1615/TR13 has a standoff voltage (VWM) of 15 V, meaning it remains non-conductive below this DC or continuous peak voltage. This value is selected to match 12–15 V system rails while providing sufficient margin above normal operating levels to avoid false triggering during noise or ripple events. The SM1615/TR13 maintains <1 µA leakage at this voltage.
Is SM1615/TR13 unidirectional or bidirectional?
The SM1615/TR13 is a unidirectional TVS array, configured with eight anode-input lines and a common cathode connection. Its device marking "MBG" (per MSC0885.PDF) confirms unidirectional operation. For bidirectional protection, the functionally matched part is SM1615C/TR13 (marked MBH), which provides symmetrical clamping for AC-coupled or differential signal lines.
What is the maximum clamping voltage of SM1615/TR13 at 5 A surge current?
The SM1615/TR13 clamps to a maximum of 30 V when subjected to a 5 A transient current (8/20 µs waveform), as specified in the Electrical Characteristics table of the MSC0885.PDF datasheet. This clamping level ensures protected 24 V-rated components remain within safe operating limits during standardized surge events such as IEC 61000-4-4 EFT bursts.
Does SM1615/TR13 meet industry standards for ESD and electrical fast transients?
Yes, the SM1615/TR13 is explicitly designed to protect against electrostatic discharge per IEC 61000-4-2, electrical fast transients per IEC 61000-4-4, and secondary lightning effects per IEC 61000-4-5. Its 300 W peak pulse rating (8/20 µs) and verified clamping performance validate compliance with these immunity test standards when implemented per recommended PCB layout guidelines.
What package type and pin configuration does SM1615/TR13 use?
The SM1615/TR13 uses a molded SO-16 surface-mount package with standard 0.050″ lead pitch. Pins 1, 3, 5, 7, 9, 11, 13, and 15 serve as individual anodes for each of the eight protected lines; pins 2, 4, 6, 8, 10, 12, 14, and 16 form the common cathode connection to ground. Pin #1 is marked by a dot on the package top surface.
SM1615/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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 30V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 400pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
SM1615/TR13 FAQ
1.How can I place an order for SM1615/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM1615/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 SM1615/TR13 reliable?
The price and inventory of SM1615/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM1615/TR13 is usually 5 days.
3.What payment methods are accepted for SM1615/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM1615/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM1615/TR13?
SM1615/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM1615/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 SM1615/TR13?
For technical support, including SM1615/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM1615/TR13 requirements.
6.How does Aetrix verify that SM1615/TR13 is sourced from the original manufacturer or authorized distributors?
All SM1615/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 SM1615/TR13 meets industry standards.
7.What is the process for return or replacement of SM1615/TR13?
All SM1615/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SM1615/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 SM1615/TR13 part is unused and in its original packaging.
Return procedure for SM1615/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM1615/TR13 Tags
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