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Taiwan Semiconductor Corporation SMDJ36AH
- Part No.:
- SMDJ36AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ36AH.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,803
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Product details
Overview
SMDJ36AH from Taiwan Semiconductor is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with a 36V working stand-off voltage, 40.0–44.2V breakdown voltage at 1mA, and 58.1V maximum clamping voltage at 51.6A peak pulse current. It is AEC-Q101 qualified and designed for automotive and industrial surge protection in DC power rails and signal lines.
For engineers reviewing the SMDJ36AH datasheet, SMDJ36AH pinout, SMDJ36AH application, or SMDJ36AH equivalent, key selection criteria include its DO-214AB (SMC) package, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, 175°C max junction temperature, and unidirectional polarity marking.
Technical Context
The SMDJ36AH operates as a silicon avalanche diode optimized for high-energy transient suppression in automotive electronics. Its glass-passivated junction ensures stable breakdown characteristics, while its low RθJA of 75°C/W supports reliable thermal dissipation under repetitive surge conditions.
It delivers precise clamping performance with a VC of 58.1V at IPPM = 51.6A (10/1000µs waveform), and exhibits <1µA reverse leakage at VWM = 36V - critical for low-power system standby integrity and ESD immunity in 12V/24V vehicle subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin for 12V/24V automotive systems. |
| VBR @ IT=1mA | 40.0–44.2 V - Measured breakdown range confirms tight tolerance for predictable turn-on during transients. |
| VC @ IPPM | 58.1 V - Clamping voltage at 51.6A peak pulse; limits downstream IC stress to safe levels per ISO 7637-2. |
| PPK | 3000 W - Peak pulse power rating for 1ms duration; enables robust protection against load dump and inductive switching events. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood environments without derating. |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 7.11 × 6.22 mm footprint and matte tin-plated leads for automated assembly. |
Pinout & Package
DO-214AB (SMC) package with cathode band marking on one end; two-terminal unidirectional configuration. Cathode terminal is marked; anode is unmarked. Leads are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VRM exceeded. |
| Anode (unmarked end) | Reference / return path | Typically tied to system ground or low-impedance return plane; completes clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) waveforms. |
| Sub-1ps response time | Enables clamping before sensitive logic or analog circuitry sustains damage from fast-rising ESD or lightning-induced surges. |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly processes without floor-life constraints. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive; suitable for green manufacturing and export-regulated markets. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs from load dump and battery reversal transients in door modules and lighting controllers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and ground to clamp negative-going spikes and positive overvoltage events. Use Value: Limits voltage seen by MAX13041 or TLE6250 transceivers to ≤58.1V, preserving signal integrity and preventing latch-up during ISO 7637-2 Pulse 2a. | Use Scenario: Safeguarding 24V DC digital input channels against field-wiring transients and relay coil flyback in factory automation I/O modules. IC Role / Device Role / Timing Role: Primary surge clamp on each input channel, mounted adjacent to connector entry point before optocoupler isolation stage. Use Value: Absorbs up to 3000W of energy from 8.3ms half-sine surges (IFSM = 300A), preventing false triggering and component failure in DIN-rail mounted controllers. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Drive Board |
Use Scenario: Guarding AC/DC adapter primary-side rectifier output and secondary-side 12V bias rails against lightning-induced surges entering via AC mains or Ethernet ports. IC Role / Device Role / Timing Role: Secondary-side TVS on +12V rail feeding PoE controller and management MCU. Use Value: Clamps 10/1000µs transients to 58.1V within 1ps, ensuring continuous operation of TPS23753A and MSP430F5xx during EN 61000-4-5 Level 4 testing. | Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machine control boards where 24V logic supplies interface with motor drivers. IC Role / Device Role / Timing Role: Rail-to-ground TVS on 24V logic supply feeding gate drivers and current sense amplifiers. Use Value: Maintains VCC stability below 60V during 300A inductive kickback events, avoiding reset or ADC saturation in STM32G0B1-based motor control firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | 600W rating, smaller SMA package, higher VC = 58.1V at lower IPPM = 10.3A | Not suitable for ISO 7637-2 Pulse 1 or load dump; limited to low-energy ESD and signal-line protection. | Select SMDJ36AH when 3000W peak power and automotive-grade surge immunity are required. |
| SMCJ36A | Same 3000W rating and DO-214AB package, but not AEC-Q101 qualified; VBR min = 40.0V identical | Lacks automotive qualification evidence; may require additional validation for vehicle programs. | Choose SMDJ36AH for production automotive designs requiring documented AEC-Q101 compliance and traceable lot data. |
Compared with SMAJ36A and SMCJ36A, the SMDJ36AH provides identical clamping performance (58.1V) and superior automotive qualification - making it the only option among the three validated for under-hood BCM and ADAS sensor power rail protection without additional reliability testing.
Availability
SMDJ36AH is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMDJ36AH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers with global distribution and AEC-Q101-compliant production lines.
The SMDJ series is part of TSC's automotive-grade transient suppression portfolio, engineered specifically for ISO 7637-2 and ISO 16750-2 compliance in 12V/24V vehicle electrical systems.
FAQ
What is the maximum clamping voltage of the SMDJ36AH under standard test conditions?
The SMDJ36AH has a maximum clamping voltage (VC) of 58.1 V when subjected to a 10/1000 µs peak pulse current of 51.6 A. This value is measured per JEDEC standards and ensures downstream components remain within safe operating voltage limits during surge events. The SMDJ36AH maintains this clamping performance across its rated temperature range and is validated for use in automotive environments where transient immunity is critical.
Is the SMDJ36AH suitable for bidirectional transient protection?
No - the SMDJ36AH is a unidirectional TVS diode intended for DC rail protection with defined polarity. For bidirectional applications, the SMDJ36CAH variant must be used instead, which features symmetrical breakdown in both directions. The SMDJ36AH has a cathode band marking and is not rated for reverse conduction beyond its specified leakage current; using it in bidirectional configurations may result in device failure or inadequate protection.
Does the SMDJ36AH meet AEC-Q101 requirements for automotive use?
Yes - the SMDJ36AH is explicitly qualified to AEC-Q101 Rev D for stress testing including HTGB, HTRB, TCT, and ESD. This qualification is documented in Taiwan Semiconductor's official product release B2104 and applies to all units shipped with the "AH" suffix. The SMDJ36AH is approved for use in engine control units, body control modules, and infotainment power supplies where automotive-grade reliability is mandated.
What is the thermal resistance from junction to ambient for the SMDJ36AH?
The SMDJ36AH has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on a standard 1-inch² copper pad on a 1.6 mm FR-4 PCB. This value assumes natural convection cooling and is critical for calculating safe power derating above 25°C ambient. At 100°C ambient, the SMDJ36AH must be operated below ~2.2 W steady-state power to maintain TJ ≤ 175°C - though its 3000W peak rating remains valid for short-duration transients.
How does the SMDJ36AH compare to the SMAJ36A in terms of surge handling capability?
The SMDJ36AH delivers 3000W peak pulse power, five times higher than the 600W rating of the SMAJ36A, due to its larger DO-214AB package and optimized chip construction. While both share the same 36V stand-off and 58.1V clamping voltage, the SMDJ36AH supports 51.6A peak current versus 10.3A for the SMAJ36A - making it suitable for ISO 7637-2 Pulse 1 load dump events that the SMAJ36A cannot withstand. The SMDJ36AH is therefore the appropriate choice for automotive front-end protection where high-energy surges are expected.
SMDJ36AH 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:
- 1
- Bidirectional Channels:
- -
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMDJ36AH FAQ
1.How can I place an order for SMDJ36AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ36AH 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 SMDJ36AH reliable?
The price and inventory of SMDJ36AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ36AH is usually 5 days.
3.What payment methods are accepted for SMDJ36AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ36AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ36AH?
SMDJ36AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ36AH 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 SMDJ36AH?
For technical support, including SMDJ36AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ36AH requirements.
6.How does Aetrix verify that SMDJ36AH is sourced from the original manufacturer or authorized distributors?
All SMDJ36AH 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 SMDJ36AH meets industry standards.
7.What is the process for return or replacement of SMDJ36AH?
All SMDJ36AH units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ36AH, 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 SMDJ36AH part is unused and in its original packaging.
Return procedure for SMDJ36AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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