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Taiwan Semiconductor Corporation SMDJ36CA
- Part No.:
- SMDJ36CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ36CA.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,610
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Product details
Overview
SMDJ36CA from Taiwan Semiconductor is a bidirectional 3000W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 40.0V minimum breakdown voltage (VBR), 36V working stand-off voltage (VWM), and 58.1V maximum clamping voltage (VC) at 51.6A peak pulse current - deployed for ESD and lightning surge protection in telecom power rails and industrial I/O interfaces.
For engineers reviewing the SMDJ36CA datasheet, SMDJ36CA pinout, SMDJ36CA application, or SMDJ36CA equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, 175°C junction rating, and DO-214AB mechanical compatibility with automated SMT assembly.
Technical Context
The SMDJ36CA operates as a symmetric, bidirectional avalanche diode designed to clamp transient overvoltages in both polarities without requiring external polarity management. Its glass-passivated junction ensures stable VBR tolerance (±5% typical) and low leakage (<1µA at 36V), while its 3000W peak pulse power rating (10/1000µs waveform) supports high-energy surge events.
Thermally, it features RθJA = 75°C/W and RθJL = 15°C/W, enabling reliable operation up to 175°C junction temperature. It meets J-STD-020 moisture sensitivity level 1 and passes JESD 201 Class 2 whisker testing - confirming suitability for lead-free reflow and long-term field reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 40.0 / 44.2 V @ 1 mA - Ensures precise, repeatable avalanche turn-on across production lots |
| VC @ IPPM | 58.1 V @ 51.6 A - Limits downstream voltage stress during 10/1000µs transients |
| PPK | 3000 W - Withstands automotive load-dump and lightning-induced surges per ISO 7637-2 |
| TJ max | 175 °C - Enables use in under-hood or enclosed industrial enclosures without derating |
| Package | DO-214AB (SMC) - Standardized footprint compatible with IPC-7351B SMC layout guidelines |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (not functional in bidirectional SMDJ36CA); weight ≈ 0.290 g; UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | No polarity marking required; terminals interchangeable in PCB layout |
| Case / Body | Thermal and mechanical interface | Provides primary heat dissipation path to PCB copper; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| ISO 7637-2 compliance | Validated for automotive Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (capacitive coupling) |
| Sub-1 ps response time | Clamps transients before sensitive ICs experience overstress - critical for USB, RS-485, and Ethernet PHY protection |
| Glass-passivated junction | Guarantees long-term VBR stability and low parameter drift over temperature and lifetime |
| MSL Level 1 | Zero bake requirement prior to reflow; supports standard J-STD-020 lead-free assembly processes |
Applications
| Telecom Power Input Protection | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting 48V DC power inputs in VoIP gateways and base station remote radios from induced lightning surges. IC Role / Device Role / Timing Role: Primary shunt TVS device placed at board edge before DC-DC converter input. Use Value: Clamps 3000W transients to ≤58.1V, preventing damage to upstream fuse, EMI filter, and regulator ICs. | Use Scenario: Safeguarding 24V digital input channels in programmable logic controllers exposed to inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Bidirectional transient suppressor across input terminal pair, referenced to common ground. Use Value: Absorbs 51.6A pulses (10/1000µs) without degradation, maintaining channel integrity after repeated switching events. |
| Automotive Body Control Module | Smart Meter Communication Port |
Use Scenario: Securing LIN bus power and signal lines in body control units against battery dump and load-switching transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS on VBAT-to-ground and LIN line-to-ground paths. Use Value: Meets ISO 7637-2 Pulse 1 (−100V/50Ω) and Pulse 2b (+100V/2Ω) requirements with margin. | Use Scenario: Hardening RS-485 communication ports in electricity meters against ESD and meter-reading induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping element between differential pair and ground, placed adjacent to connector. Use Value: Limits clamping voltage to 58.1V while maintaining <1µA leakage at 36V - preserving bus bias and noise immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC36CA (Littelfuse) | Same VWM/VC specs; 3000W rating; DO-214AB package; slightly higher VBR min (40.8V) | Identical ISO 7637-2 coverage; identical thermal performance (RθJA = 75°C/W) | Drop-in alternative where Littelfuse sourcing is preferred; verify marking and tape/reel packaging compatibility |
| 1.5KE36CA (ON Semiconductor) | Through-hole TO-218 package; same VWM/VC; 3000W rating; slower thermal response due to higher RθJA (60°C/W) | Not suitable for high-density SMT designs; requires wave solder or hand-solder process | Select only when legacy through-hole layout exists or thermal mass requirements exceed SMDJ36CA's capability |
Compared with SAC36CA and 1.5KE36CA, the SMDJ36CA offers superior SMT manufacturability, MSL Level 1 handling, and identical surge robustness - making it optimal for new automotive and industrial designs requiring automated assembly and space-constrained layouts.
Availability
SMDJ36CA is available at Aetrix Electronics and suitable for telecom power input protection, industrial PLC digital I/O hardening, and automotive body control module surge suppression requiring stable component supply and full traceability.
Supply support for SMDJ36CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The SMDJ series was engineered specifically for high-reliability, high-power transient suppression in automotive, industrial, and telecom infrastructure - emphasizing rugged packaging, AEC-Q200 alignment, and standardized SMT compatibility.
FAQ
What is the polarity configuration of the SMDJ36CA?
The SMDJ36CA is a bidirectional TVS diode with symmetrical anode/cathode terminals - no polarity marking is functional or required on the DO-214AB package. It clamps overvoltage transients equally in both directions, making it ideal for AC-coupled lines, differential buses, or floating grounds where polarity cannot be guaranteed.
Does the SMDJ36CA meet automotive surge standards?
Yes, the SMDJ36CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements - validated for automotive 12V and 24V systems. Its 3000W peak power rating and 58.1V clamping voltage ensure compliance with load-dump and inductive switching transient profiles without additional circuitry.
What is the maximum clamping voltage of the SMDJ36CA at rated peak current?
The SMDJ36CA has a maximum clamping voltage (VC) of 58.1 V at 51.6 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees predictable voltage limiting during surge events across the full operating temperature range.
Is the SMDJ36CA RoHS and halogen-free compliant?
Yes, the SMDJ36CA is fully RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound is UL 94V-0 rated, and the matte tin-plated leads meet J-STD-002 solderability requirements - supporting lead-free reflow profiles and environmental compliance for global markets.
How does the SMDJ36CA compare to unidirectional SMDJ36A in circuit design?
The SMDJ36CA provides bidirectional clamping, while the SMDJ36A is unidirectional and requires correct polarity orientation. In circuits with AC signals, floating references, or uncertain voltage polarity - such as RS-485, CAN, or telecom line cards - the SMDJ36CA eliminates orientation errors and simplifies layout. Its VBR and VC values match the unidirectional version in both directions.
SMDJ36CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMDJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 51.6A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMDJ36CA FAQ
1.How can I place an order for SMDJ36CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ36CA 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 SMDJ36CA reliable?
The price and inventory of SMDJ36CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ36CA is usually 5 days.
3.What payment methods are accepted for SMDJ36CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ36CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ36CA?
SMDJ36CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ36CA 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 SMDJ36CA?
For technical support, including SMDJ36CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ36CA requirements.
6.How does Aetrix verify that SMDJ36CA is sourced from the original manufacturer or authorized distributors?
All SMDJ36CA 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 SMDJ36CA meets industry standards.
7.What is the process for return or replacement of SMDJ36CA?
All SMDJ36CA units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ36CA, 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 SMDJ36CA part is unused and in its original packaging.
Return procedure for SMDJ36CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDJ36CA Tags
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