My Inquiry
My Account
STMicroelectronics SMAJ130CA-TR
- Part No.:
- SMAJ130CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ130CA-TR.pdf
- Description:
- TVS DIODE 130VWM 265VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:8,965
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ130CA-TR from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode designed for ESD and surge protection in DC power rails and signal lines. It features a 130 V standoff voltage (VRM), 209 V clamping voltage at 1.9 A (10/1000 µs), 400 W peak pulse power, and operates up to 150 °C junction temperature - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the SMAJ130CA-TR datasheet, SMAJ130CA-TR pinout, SMAJ130CA-TR application, or SMAJ130CA-TR equivalent, key selection criteria include bidirectional clamping behavior, low leakage (<0.2 µA at 25 °C), JEDEC DO-214AC (SMA) package compatibility, and IEC 61000-4-2/4-4 compliance for system-level immunity validation.
Technical Context
This TVS diode uses planar silicon junction technology to achieve stable breakdown characteristics and low dynamic resistance (11.7 Ω at 8/20 µs). Its bidirectional configuration enables symmetric clamping on AC-coupled or floating lines without polarity dependency.
The device meets IEC 61000-4-2 Level 4 (±30 kV contact/air discharge) and IEC 61000-4-4 Level 4 (4 kV), with thermal performance validated per JESD22-A104 and solderability certified to J-STD-002 and MIL-STD-750 Method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 130 V - maximum continuous reverse operating voltage before conduction begins |
| Clamping Voltage (VCL) | 209 V at 1.9 A (10/1000 µs) - limits transient voltage seen by downstream circuitry |
| Peak Pulse Power | 400 W (10/1000 µs) - sustains short-duration surges without failure under standard test waveform |
| Leakage Current | 0.2 µA at 25 °C - minimizes standby power loss in high-impedance sensing or battery-backed circuits |
| Junction Temperature Range | −55 °C to +150 °C - supports operation in under-hood automotive or industrial ambient environments |
| Package | DO-214AC (SMA) - surface-mount footprint compliant with IPC-7531, MSL Level 1 |
Pinout & Package
Package: DO-214AC (SMA), JEDEC-registered outline with cathode band marking; dimensions: 4.80–5.35 mm (E), 3.95–4.60 mm (E1), 2.25–2.90 mm (D), 1.90–2.45 mm (A1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional operation | Connected to protected line; forms symmetrical clamp path with cathode during either polarity surge |
| Cathode | Current exit point in forward bias; marked with band on package body | Provides reference node for clamping; bidirectional symmetry ensures equal VBR magnitude in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals or floating buses without polarity constraints or external diode pairing |
| Low leakage current | 0.2 µA at 25 °C ensures negligible loading on high-impedance sensor inputs or precision reference nodes |
| High-temperature reliability | Rated for 150 °C Tj - maintains clamping stability in thermally constrained enclosures or near power stages |
| IEC 61000-4-2/4-4 compliance | Validated to ±30 kV ESD (contact/air) and 4 kV EFT - reduces need for additional system-level filtering |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Protection of 24 V DC input channels against induced lightning surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side analog/digital inputs, placed before signal conditioning ICs. Use Value: Limits transients to ≤209 V, preventing damage to 30 V-rated op-amps and microcontroller GPIOs while maintaining <0.2 µA leakage at ambient temperatures. | Use Scenario: Surge suppression on LIN bus lines exposed to load dump and battery reversal events. IC Role / Device Role / Timing Role: Bidirectional transient suppressor across LIN differential pair, referenced to chassis ground. Use Value: Symmetric clamping ensures equal protection during positive and negative transients, meeting ISO 16750-2 pulse 5a/b requirements without polarity-sensitive layout. |
| Telecom Power Interface | Medical Diagnostic Equipment |
Use Scenario: Input-stage protection for 48 V telecom rectifier outputs subjected to hot-swap and cable discharge events. IC Role / Device Role / Timing Role: First-line defense on primary DC rail, coordinated with upstream fuses and downstream POL converters. Use Value: 400 W peak power rating handles 10/1000 µs surges up to 1.9 A, enabling robust front-end design without oversized heatsinking. | Use Scenario: ESD safeguarding of isolated patient-monitoring sensor interfaces (e.g., ECG leads) connected to hospital-grade power supplies. IC Role / Device Role / Timing Role: Low-leakage TVS on isolated analog front-end inputs, placed after isolation barrier but before instrumentation amplifier. Use Value: Sub-microamp leakage preserves signal integrity in high-gain, low-noise paths while passing IEC 61000-4-2 Level 4 testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ130CA-TR | Same VRM (130 V), higher PPP (600 W), larger SMB package (DO-214AA) | Requires more PCB area; better suited for higher-energy surges where space permits | Select when surge energy exceeds 400 W and board layout allows SMB footprint |
| SMCJ130CA-TR | Same VRM (130 V), PPP = 1500 W, DO-214AB (SMC) package | Higher thermal mass and surge capacity; used in main power input stages | Choose for primary AC/DC input protection where 1.5 kW pulse handling is required |
Compared with SMBJ130CA-TR and SMCJ130CA-TR, SMAJ130CA-TR offers optimal balance of compact size, 400 W capability, and low leakage - ideal for space-constrained secondary-side protection where full SMB/SMC surge margin is unnecessary.
Availability
SMAJ130CA-TR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and telecom power interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMAJ130CA-TR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering intelligent power, sensing, and control solutions for automotive, industrial, and consumer markets.
The SMAJ series belongs to ST's transient protection portfolio, engineered specifically for high-reliability, low-leakage ESD/surge suppression in space- and thermal-constrained applications where DO-214AC packaging and precise clamping are critical.
FAQ
What is the difference between SMAJ130A-TR and SMAJ130CA-TR?
SMAJ130A-TR is unidirectional (anode-to-cathode conduction only), while SMAJ130CA-TR is bidirectional - providing symmetrical clamping for AC signals or floating lines. The 'C' suffix denotes bidirectional functionality, confirmed in Table 2 and the device description section of DS1251 Rev 15.
Does SMAJ130CA-TR meet automotive qualification standards?
SMAJ130CA-TR is not AEC-Q200 qualified, but its 150 °C junction rating, IEC 61000-4-2/4-4 compliance, and JEDEC-qualified solderability support use in non-safety-critical automotive subsystems like body control modules and LIN bus interfaces when validated per system-level requirements.
What is the dynamic resistance (RD) of SMAJ130CA-TR at 8/20 µs?
Per Table 2, RD is 11.7 Ω at 8/20 µs. This value quantifies voltage rise per unit current beyond clamping threshold and directly impacts residual voltage during fast transients - lower RD yields tighter clamping control for sensitive downstream ICs.
Can SMAJ130CA-TR be used in parallel for higher surge current handling?
Parallel use is not recommended due to mismatch in VBR and thermal coupling effects. ST does not characterize or guarantee performance in parallel configurations. For higher current needs, select a single higher-power device such as SMBJ130CA-TR or SMCJ130CA-TR instead.
SMAJ130CA-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AC, SMA
- Series:
- SMAJ, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 130V
- Voltage - Breakdown (Min):
- 144V
- Voltage - Clamping (Max) @ Ipp:
- 265V
- Current - Peak Pulse (10/1000µs):
- 9A (8/20µs)
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ130CA-TR FAQ
1.How can I place an order for SMAJ130CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ130CA-TR 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 SMAJ130CA-TR reliable?
The price and inventory of SMAJ130CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ130CA-TR is usually 5 days.
3.What payment methods are accepted for SMAJ130CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ130CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ130CA-TR?
SMAJ130CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ130CA-TR 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 SMAJ130CA-TR?
For technical support, including SMAJ130CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ130CA-TR requirements.
6.How does Aetrix verify that SMAJ130CA-TR is sourced from the original manufacturer or authorized distributors?
All SMAJ130CA-TR 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 SMAJ130CA-TR meets industry standards.
7.What is the process for return or replacement of SMAJ130CA-TR?
All SMAJ130CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ130CA-TR, 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 SMAJ130CA-TR part is unused and in its original packaging.
Return procedure for SMAJ130CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ130CA-TR 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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 …
