My Inquiry
My Account
Microchip Technology SMAJ5.0CAE3/TR13
- Part No.:
- SMAJ5.0CAE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ5.0CAE3/TR13.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,635
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ5.0CAE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for primary and secondary lightning surge protection in DC power rails and signal lines. It features a 5.0 V reverse standoff voltage (VWM), 6.4 V minimum breakdown voltage (VBR), clamps transients to ≤9.6 V at 52 A peak pulse current (IPP), and delivers 500 W peak pulse power (10/1000 µs). It is used in industrial I/O modules, telecom power interfaces, and automotive body control units requiring IEC 61000-4-5 Class 4 compliance with 12 Ω source impedance.
For engineers reviewing the SMAJ5.0CAE3/TR13 datasheet, SMAJ5.0CAE3/TR13 pinout, SMAJ5.0CAE3/TR13 application, or SMAJ5.0CAE3/TR13 equivalent, this device is evaluated for ESD/EFT immunity per IEC 61000-4-2/4-4, bidirectional clamping capability, RoHS-compliant matte-tin plating, DO-214AC package thermal performance, and tape-and-reel delivery (TR13 = 2500/reel).
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its <100 ps theoretical response time (unidirectional) and <5 ns for bidirectional operation ensures suppression before sensitive downstream circuitry sustains damage from fast-rising transients.
The device uses an avalanche diode structure housed in a void-free UL94V-0 epoxy case with C-bend leads. Thermal resistance is 15 °C/W junction-to-lead and 80 °C/W junction-to-ambient on FR4 (1 oz Cu), supporting continuous power dissipation of 1.56 W at 25 °C ambient when mounted per recommended footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before leakage exceeds 800 µA; sets upper limit for protected line voltage. |
| VBR min @ IBR | 6.4 V @ 10 mA - Minimum voltage at which avalanche conduction begins; defines turn-on threshold under standardized test conditions. |
| VC @ IPP | 9.6 V @ 52 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| PPP | 500 W - Peak pulse power handling capacity; enables robust protection against IEC 61000-4-5 lightning surges (42 Ω/12 Ω source). |
| ID @ VWM | 800 µA - Max reverse leakage at rated standoff voltage; low enough to avoid loading 5 V logic or sensor supply rails. |
| Operating Temp | –65 °C to +150 °C - Wide junction temperature range supports deployment in under-hood automotive, industrial PLC, and outdoor telecom enclosures. |
Pinout & Package
Package: DO-214AC (SMAJ), surface-mount, void-free UL94V-0 epoxy case with C-bend matte-tin-plated leads. Cathode band omitted for bidirectional construction (CA suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction terminals | No polarity marking; interchangeable connection for AC or floating lines; identical clamping behavior in both directions. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential pairs, RS-485 buses, or ungrounded analog inputs without external polarity management. |
| IEC 61000-4-5 Class 4 compliance | Withstands 12 Ω source impedance lightning surges up to 1 kV open-circuit voltage (VOC) on 5 V lines per standard test waveform. |
| RoHS-compliant "e3" finish | Matte-tin plating meets JEDEC J-STD-020B Level 1 moisture sensitivity; no dry pack required; compatible with lead-free reflow profiles. |
| 500 W peak pulse rating | Supports high-energy transient suppression in 24 V industrial power supplies and PoE-powered devices where lower-power TVS diodes would fail. |
Applications
| Industrial I/O Protection | Automotive Body Control |
|---|---|
Use Scenario: 5 V sensor input lines in programmable logic controllers exposed to inductive switching noise from solenoid drivers. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground to clamp positive/negative transients before reaching ADC front-end or microcontroller GPIO. Use Value: Limits voltage excursion to ≤9.6 V during 52 A surges, preventing latch-up or gate oxide damage in 5 V CMOS interface ICs. |
Use Scenario: LIN bus transceiver power rail in door module subjected to load-dump and jump-start events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VCC supply line upstream of LIN transceiver IC, absorbing energy before regulator input stage. Use Value: Withstands 500 W pulses without degradation, maintaining system uptime during vehicle battery fault conditions per ISO 7637-2 Pulse 5a. |
| Telecom Power Interface | RS-485 Data Line Protection |
Use Scenario: 5 V auxiliary power rail in DSLAM line cards receiving induced surges from adjacent copper pairs. IC Role / Device Role / Timing Role: Secondary surge protector after primary MOV-based front-end, providing precise clamping for low-voltage DC-DC converter inputs. Use Value: Low 5.0 V standoff avoids false triggering while delivering sub-10 V clamping to protect 5 V buck controller ICs. |
Use Scenario: Differential A/B lines of RS-485 transceivers in factory automation networks exposed to ESD and cable-induced transients. IC Role / Device Role / Timing Role: Bidirectional TVS pair (one per line) referenced to common-mode ground, suppressing common-mode surges without distorting differential signaling. Use Value: Symmetrical 9.6 V clamping preserves receiver common-mode range and prevents data corruption during 8 kV contact ESD events (IEC 61000-4-2). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0AHE3/TR13 | Unidirectional variant with cathode band; same VWM, VBR, VC, and PPP; forward surge rating of 40 A (8.3 ms) included. | Requires polarity-aware layout; suitable only for DC rails with defined ground reference and no negative excursions. | Select when protecting single-polarity 5 V supplies where forward conduction must be supported (e.g., post-regulator outputs). |
| SMBJ5.0CA/TR13 | Same bidirectional function but in DO-214AA (SMB) package; 600 W PPP; higher thermal resistance (junction-to-ambient: 90 °C/W vs. 80 °C/W). | Larger footprint; slightly higher clamping voltage (10.3 V @ 48.5 A); less optimal for space-constrained 5 V PCB layouts. | Choose when higher pulse power margin is needed and board area permits larger SMB package; not drop-in due to different pad layout. |
Compared with SMAJ5.0AHE3/TR13 and SMBJ5.0CA/TR13, the SMAJ5.0CAE3/TR13 uniquely balances compact DO-214AC size, strict 5.0 V standoff, bidirectional symmetry, and RoHS-compliant matte-tin finish-making it optimal for high-density 5 V industrial and automotive signal/power rail protection where polarity uncertainty exists.
Availability
SMAJ5.0CAE3/TR13 is available at Aetrix Electronics and suitable for industrial I/O modules, automotive body control units, and telecom power interfaces requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMAJ5.0CAE3/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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The SMAJ series was engineered for surface-mount transient suppression in harsh environments, targeting applications demanding certified IEC 61000-4-5 lightning immunity, wide temperature operation, and RoHS compliance without derating.
FAQ
What does the "CA" suffix indicate in SMAJ5.0CAE3/TR13?
The "CA" suffix in SMAJ5.0CAE3/TR13 denotes a bidirectional transient voltage suppressor configuration. Unlike unidirectional variants (e.g., SMAJ5.0A), the CA version provides symmetrical clamping for both positive and negative transients without polarity dependence. It has no cathode band marking and is intended for AC-coupled or floating signal lines such as RS-485, CAN, or sensor bridges where voltage polarity may reverse.
What is the clamping voltage of SMAJ5.0CAE3/TR13 under a standard 10/1000 µs surge?
The SMAJ5.0CAE3/TR13 clamps to a maximum of 9.6 V when subjected to a 52 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 2 in the official Microsemi datasheet MSC0270A and represents the upper voltage limit imposed on protected circuitry during worst-case surge events, ensuring compatibility with 5 V logic families and analog front-ends.
Is SMAJ5.0CAE3/TR13 compliant with IEC 61000-4-5 for lightning surge protection?
Yes, SMAJ5.0CAE3/TR13 is certified for secondary lightning surge protection per IEC 61000-4-5 with both 12 Ω and 42 Ω source impedances. Specifically, it meets Class 4 (12 Ω) and Class 1 (42 Ω) requirements for 5.0 V systems, enabling use in telecom power interfaces and industrial fieldbus nodes where standardized surge immunity is mandated.
What is the thermal resistance of SMAJ5.0CAE3/TR13 when mounted on a standard FR4 PCB?
When mounted on a standard FR4 printed circuit board with 1 oz copper and the recommended footprint, SMAJ5.0CAE3/TR13 exhibits a thermal resistance of 80 °C/W from junction to ambient. Its junction-to-lead thermal resistance is 15 °C/W, supporting reliable operation at 1.56 W steady-state power dissipation at 25 °C ambient temperature.
Does SMAJ5.0CAE3/TR13 require moisture-sensitive packaging?
No, SMAJ5.0CAE3/TR13 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it does not require dry pack or baking prior to reflow soldering. The device's void-free UL94V-0 epoxy encapsulation and matte-tin plating ensure robust handling in standard SMT assembly environments without humidity-related reliability risks.
SMAJ5.0CAE3/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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 54.3A
- 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)
SMAJ5.0CAE3/TR13 FAQ
1.How can I place an order for SMAJ5.0CAE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ5.0CAE3/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 SMAJ5.0CAE3/TR13 reliable?
The price and inventory of SMAJ5.0CAE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ5.0CAE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ5.0CAE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ5.0CAE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ5.0CAE3/TR13?
SMAJ5.0CAE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ5.0CAE3/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 SMAJ5.0CAE3/TR13?
For technical support, including SMAJ5.0CAE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ5.0CAE3/TR13 requirements.
6.How does Aetrix verify that SMAJ5.0CAE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ5.0CAE3/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 SMAJ5.0CAE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ5.0CAE3/TR13?
All SMAJ5.0CAE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ5.0CAE3/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 SMAJ5.0CAE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ5.0CAE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ5.0CAE3/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…
