My Inquiry
My Account
Microchip Technology SMAJ90AE3/TR13
- Part No.:
- SMAJ90AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ90AE3/TR13.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,923
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ90AE3/TR13 from Microsemi is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in DO-214AC (SMA) package, rated for 500 W peak pulse power at 10/1000 µs, with 90 V standoff voltage (VWM), 100 V minimum breakdown voltage (VBR), and 160 V maximum clamping voltage (VC) at 3.1 A peak pulse current - deployed for IEC61000-4-5 secondary lightning protection in industrial power supplies and DC bus lines.
For engineers reviewing the SMAJ90AE3/TR13 datasheet, SMAJ90AE3/TR13 pinout, SMAJ90AE3/TR13 application, or SMAJ90AE3/TR13 equivalent, key selection criteria include verified clamping performance under 10/1000 µs surge, RoHS-compliant matte-tin plating, tape-and-reel packaging (TR13 = 2500/reel), and compatibility with FR4 PCBs using the specified 1.70–2.26 mm × 3.99–4.50 mm footprint.
Technical Context
This unidirectional TVS diode operates with <100 ps theoretical response time, enabling effective suppression of ESD per IEC61000-4-2 and EFT per IEC61000-4-4. Its cathode-band polarity marking and C-bend lead geometry ensure correct orientation during automated placement on high-density boards.
Thermal resistance is 15 °C/W junction-to-lead and 80 °C/W junction-to-ambient on FR4 (1 oz Cu) with recommended pad layout; steady-state power dissipation is 5 W at TL = 75 °C, supporting sustained transient duty cycles up to 0.01% impulse repetition rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 90 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC working margin. |
| VBR (Min @ IBR) | 100 V @ 1 mA - Confirmed breakdown threshold; ensures reliable triggering above system nominal voltage. |
| VC @ IPP | 160 V @ 3.1 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPP | 500 W - Peak pulse power handling capability; validated per Figure 1 for standard waveform compliance. |
| ID @ VWM | 3.1 µA - Ultra-low leakage at rated standoff; minimizes standby power loss in battery-backed systems. |
| Operating Temp | −65 °C to +150 °C - Wide junction temperature range supports automotive under-hood and industrial ambient use. |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with 1.70–2.26 mm width and 3.99–4.50 mm length; compatible with JEDEC-compliant pick-and-place. |
Pinout & Package
DO-214AC (SMA) package with two terminals: anode and cathode. Cathode identified by molded band; no polarity marking on bidirectional variants (not applicable to SMAJ90AE3/TR13).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected line (e.g., DC input rail) | Provides low-impedance path to ground when VAK exceeds VBR; must be routed with minimal trace inductance. |
| Cathode | Current exit point in forward bias; tied to system ground or chassis | Acts as reference node for clamping action; requires low-inductance grounding via thermal pad or multiple vias. |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant matte-tin plating | Meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity; eliminates dry-pack requirement and enables standard reflow. |
| 500 W peak pulse rating (10/1000 µs) | Validated clamping performance across full surge waveform envelope; supports IEC61000-4-5 Class 1–4 secondary lightning testing. |
| Unidirectional configuration | Enables asymmetric protection on DC rails where reverse polarity is not expected; reduces capacitance vs. bidirectional alternatives. |
| Tape-and-reel packaging (TR13) | 2500 units per 13-inch reel per EIA-481-1-A; optimized for high-volume SMT assembly with consistent feed reliability. |
| Low thermal resistance (15 °C/W) | Efficient junction-to-lead heat transfer enables sustained operation near thermal limits without derating penalties. |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) CAN Bus Line |
|---|---|
Use Scenario: 24 V DC input stage of DIN-rail mounted PLC power supply exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +24 V rail and chassis ground to clamp surges before they reach DC-DC converter ICs. Use Value: Limits transient voltage to ≤160 V, preventing damage to 36 V-rated input capacitors and gate drivers while maintaining <3.1 µA leakage at nominal voltage. |
Use Scenario: CAN_H/CAN_L differential pair in vehicle BCM subjected to ESD events and battery disconnect transients. IC Role / Device Role / Timing Role: SMAJ90AE3/TR13 used on single-ended CAN_H line (with separate device on CAN_L) to suppress common-mode surges. Use Value: Sub-100 ps response ensures clamping occurs before CAN transceiver internal protection fails; 160 V clamping preserves 5 V logic-level integrity. |
| Telecom AC/DC Adapter Secondary Side | Renewable Energy Inverter DC Link Monitoring |
Use Scenario: Output rectifier stage of isolated 48 V telecom adapter where secondary-side surges may originate from transformer coupling or relay bounce. IC Role / Device Role / Timing Role: TVS installed across output capacitor terminals to absorb reflected energy and prevent overvoltage shutdown of PMICs. Use Value: 500 W rating handles repetitive 10/1000 µs pulses without degradation; 90 V VWM allows safe operation with 48 V ±10% regulation tolerance. |
Use Scenario: Voltage sense input of microcontroller monitoring 600 V DC link in solar inverter, vulnerable to fast transients from IGBT switching. IC Role / Device Role / Timing Role: Front-end protection element ahead of resistive divider network feeding ADC input. Use Value: 100 V VBR provides 10% margin above max sensed voltage (540 V), while 160 V VC prevents ADC latch-up during 1 kV surge 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 |
|---|---|---|---|
| SMCJ90A-E3/57T | DO-214AB (SMC) package; 1500 W rating; same VWM/VBR/VC but higher IPP (10.4 A) | Requires larger PCB footprint; suited for higher-energy surge environments (e.g., outdoor telecom cabinets) | Select when >500 W pulse energy is required and board space permits SMC package. |
| SMAJ90AHE3/A | Same DO-214AC package; identical electrical specs; "HE3" denotes halogen-free epoxy (vs. "E3" RoHS-only) | No functional difference; halogen-free material preferred for specific aerospace or green-certified programs | Choose only if halogen-free compliance is mandated by end-equipment environmental policy. |
Compared with SMCJ90A-E3/57T and SMAJ90AHE3/A, SMAJ90AE3/TR13 delivers optimal balance of compact DO-214AC form factor, verified 500 W surge handling, and TR13 tape-and-reel readiness for volume production - making it ideal for space-constrained industrial and automotive modules where precise 90 V standoff is required.
Availability
SMAJ90AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom adapters, and renewable energy inverters requiring stable component supply with guaranteed long-term sourcing.
Supply support for SMAJ90AE3/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 (now part of Microchip Technology) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets, emphasizing ruggedness and extended temperature performance.
The SMAJ series targets cost-effective, surface-mount transient protection for DC power rails and signal lines in harsh environments - engineered for rapid response, low leakage, and compatibility with automated assembly processes.
FAQ
What is the clamping voltage of SMAJ90AE3/TR13 under a 10/1000 µs surge?
The SMAJ90AE3/TR13 has a maximum clamping voltage (VC) of 160 V at 3.1 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured per Figure 2 in the official Microsemi datasheet MSC0270A and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components like DC-DC controllers remain within absolute maximum ratings. The SMAJ90AE3/TR13 maintains this clamping performance across its full operating temperature range.
Is SMAJ90AE3/TR13 unidirectional or bidirectional?
SMAJ90AE3/TR13 is a unidirectional Transient Voltage Suppressor, indicated by the absence of "C" or "CA" in its part number suffix. It conducts only in reverse bias above its 100 V breakdown threshold and blocks forward current up to 3.5 V at 40 A surge. This configuration is appropriate for DC power line protection where polarity is fixed and reverse-voltage transients are not expected - unlike bidirectional variants such as SMAJ90CAE3/TR13, which protect both polarities. The SMAJ90AE3/TR13 uses a cathode band for orientation identification.
What does the "TR13" suffix mean in SMAJ90AE3/TR13?
The "TR13" suffix in SMAJ90AE3/TR13 indicates tape-and-reel packaging per EIA-481-1-A standard, with 2500 devices per 13-inch reel. This format is optimized for high-speed SMT placement equipment and ensures consistent feed reliability during mass production. The "E3" portion confirms RoHS compliance with annealed matte-tin plating, while "A" denotes unidirectional construction. No additional screening (e.g., MA or MX prefixes) is included - the SMAJ90AE3/TR13 is a commercial-grade variant meeting standard Microsemi specifications.
Can SMAJ90AE3/TR13 be used for IEC61000-4-5 compliance testing?
Yes, SMAJ90AE3/TR13 is rated for secondary lightning protection per IEC61000-4-5 with both 42 Ω and 12 Ω source impedances. At 90 V VWM, it qualifies for Class 1 (42 Ω) and Class 2 (12 Ω) testing per the datasheet's classification table. Its 500 W peak pulse power and 160 V clamping voltage ensure robust performance against combination wave surges (1.2/50 µs voltage, 8/20 µs current). When implemented with proper PCB layout - short traces, low-inductance ground paths, and recommended pad dimensions - the SMAJ90AE3/TR13 supports full system-level IEC61000-4-5 certification.
What is the thermal resistance of SMAJ90AE3/TR13 on a standard FR4 board?
The SMAJ90AE3/TR13 has a thermal resistance of 80 °C/W junction-to-ambient when mounted on a standard FR4 printed circuit board with 1 oz copper and the manufacturer-recommended pad layout (per page 5 of MSC0270A). Its junction-to-lead thermal resistance is 15 °C/W, enabling efficient heat transfer to the PCB copper pour. These values support a steady-state power dissipation of 1.56 W at 25 °C ambient and 5 W at 75 °C lead temperature - critical for thermal design validation in enclosed industrial enclosures where airflow is limited. The SMAJ90AE3/TR13's DO-214AC package leverages wide leads for enhanced conduction cooling.
SMAJ90AE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 3.4A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ90AE3/TR13 FAQ
1.How can I place an order for SMAJ90AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ90AE3/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 SMAJ90AE3/TR13 reliable?
The price and inventory of SMAJ90AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ90AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ90AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ90AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ90AE3/TR13?
SMAJ90AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ90AE3/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 SMAJ90AE3/TR13?
For technical support, including SMAJ90AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ90AE3/TR13 requirements.
6.How does Aetrix verify that SMAJ90AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ90AE3/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 SMAJ90AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ90AE3/TR13?
All SMAJ90AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ90AE3/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 SMAJ90AE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ90AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ90AE3/TR13 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
