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Vishay General Semiconductor - Diodes Division TPSMA36AHM3_B/H
- Part No.:
- TPSMA36AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA36AHM3_B/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:17,496
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Product details
Overview
TPSMA36AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients. It features a 36.0 V breakdown voltage (VBR), 49.9 V maximum clamping voltage (VC) at 8.0 A peak pulse current, 400 W peak pulse power (10/1000 µs), 185 °C maximum junction temperature, and SMA (DO-214AC) package - used to protect MOSFETs and sensor signal lines in automotive ECUs.
For engineers reviewing the TPSMA36AHM3_B/H datasheet, TPSMA36AHM3_B/H pinout, TPSMA36AHM3_B/H application, or TPSMA36AHM3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 30.8 V stand-off voltage (VWM), low 1.0 µA reverse leakage at VWM, and MSL Level 1 moisture sensitivity rating.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and surge reliability. Its unidirectional architecture provides forward conduction only during overvoltage events above VBR, with clamping initiated within nanoseconds of transient onset.
Designed for automotive-grade environments, the device supports continuous operation up to TJ = 185 °C and meets JESD201 Class 2 whisker resistance. The SMA package enables compact PCB layout while maintaining thermal dissipation capability under repetitive 0.01% duty-cycle pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 34.2 V / 36.0 V / 37.8 V - ensures reliable triggering above system operating voltage without false clamping |
| VWM | 30.8 V - maximum continuous reverse voltage before leakage exceeds 1.0 µA, compatible with 24 V automotive rails |
| VC @ IPPM | 49.9 V at 8.0 A - limits downstream voltage stress during 400 W transient events |
| PPPM | 400 W (10/1000 µs waveform) - handles typical ISO 7637-2 pulse 5a/b energy without degradation |
| TJ max. | 185 °C - enables placement near heat sources in engine control modules without derating |
| Polarity | Unidirectional - protects against positive-going transients only; requires external reverse-bias protection if bidirectional immunity needed |
| MSL Rating | Level 1 (J-STD-020) - supports standard SMT reflow without baking or special handling |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, cathode indicated by color band. Dimensions per JEDEC DO-214AC outline: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), with 2.54 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; carries full surge current during clamping |
| Cathode | Protected line connection point | Connected to I/O line or power rail being protected; voltage referenced to anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including engine control, transmission, and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements without compromising surge performance or thermal robustness |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 16750-2 pulse 1), improving system-level ESD immunity |
| 185 °C junction capability | Enables direct mounting on high-temperature PCB zones (e.g., near power converters) without thermal derating penalties |
| 400 W peak pulse power | Sustains multiple ISO 7637-2 pulse 5a (50 V, 100 ms) events without parametric shift or failure |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 24 V CAN transceiver supply lines from load-dump transients during alternator regulation faults. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between VCC and GND, triggered only during positive overvoltage events. Use Value: Limits voltage to ≤49.9 V during 400 W pulses, preventing damage to TJA1042T/3 transceivers rated for 40 V absolute maximum. | Use Scenario: Shielding analog output lines (4–20 mA) of pressure sensors from EFT bursts in factory automation PLC racks. IC Role / Device Role / Timing Role: Standoff-mode protector on sensor output node, conducting only when induced transients exceed 36 V. Use Value: Maintains <1.0 µA leakage at 30.8 V, preserving loop accuracy while clamping 1 kV/50 Ω EFT spikes to safe levels. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive Interface |
Use Scenario: Safeguarding DC-DC converter input stage against lightning-induced surges on PoE-powered network switches. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on 48 V input rail, coordinated with MOV and fuse upstream. Use Value: Responds in <1 ns to clamp 10/1000 µs surges to 49.9 V, reducing stress on downstream SiC FETs and enabling smaller input capacitors. | Use Scenario: Protecting microcontroller GPIOs driving brushed DC motors in smart home vacuum cleaners. IC Role / Device Role / Timing Role: Localized flyback suppression across motor terminals and MCU driver outputs. Use Value: Withstands 40 A IFSM (8.3 ms half-sine), absorbing commutation spikes without latch-up or parameter drift over 100k cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36AHE3_A/H | Same VBR (34.2–37.8 V), but lower PPPM = 400 W (same rating), higher VC = 58.1 V at 6.9 A; not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial use only | Select when AEC-Q101 is not required and cost optimization is prioritized over automotive reliability validation |
| TPSMA36AHM3_T/R | Identical electrical specs and AEC-Q101 qualification; differs only in tape-and-reel packaging (7500 pcs vs. 1800 pcs) | No functional difference; same PCB placement and thermal behavior | Select for high-volume production requiring larger reels and reduced changeover frequency |
Compared with SMAJ36AHE3_A/H and TPSMA36AHM3_T/R, the TPSMA36AHM3_B/H delivers identical surge protection performance with verified automotive qualification and optimized reel size for mid-volume prototyping and pilot runs.
Availability
TPSMA36AHM3_B/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power supply hardening requiring stable component supply and long-term lifecycle support.
Supply support for TPSMA36AHM3_B/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and high-temperature operation.
The TPSMA series belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for automotive and industrial applications demanding AEC-Q101 qualification, 185 °C operation, and robust 400 W surge handling in compact SMA packages.
FAQ
What is the maximum clamping voltage of the TPSMA36AHM3_B/H under standard test conditions?
The TPSMA36AHM3_B/H has a maximum clamping voltage (VC) of 49.9 V when subjected to an 8.0 A peak pulse current (IPPM) using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and reflects worst-case voltage seen by protected circuitry during surge events. The TPSMA36AHM3_B/H maintains this clamping performance across its full operating temperature range.
Is the TPSMA36AHM3_B/H qualified for automotive applications?
Yes, the TPSMA36AHM3_B/H is AEC-Q101 qualified and explicitly designated for automotive use, as confirmed by Vishay's ordering code suffix "HM3" (halogen-free, RoHS-compliant, AEC-Q101 qualified). It supports junction temperatures up to 185 °C and passes JESD201 Class 2 whisker testing, making it suitable for under-hood ECU and ADAS sensor applications.
What does the "HM3" suffix indicate in TPSMA36AHM3_B/H?
The "HM3" suffix in TPSMA36AHM3_B/H denotes halogen-free, RoHS-compliant construction with full AEC-Q101 qualification. It distinguishes the part from the "HE3" variant (RoHS-compliant and AEC-Q101 qualified but not halogen-free) and confirms compliance with automotive environmental and reliability standards. The TPSMA36AHM3_B/H uses matte tin-plated leads solderable per J-STD-002.
Can the TPSMA36AHM3_B/H be used in bidirectional transient protection circuits?
No, the TPSMA36AHM3_B/H is unidirectional only, as stated in the Vishay datasheet. It conducts during positive transients relative to its cathode and cannot suppress negative-going surges. For bidirectional protection, two TPSMA36AHM3_B/H devices must be connected in series opposition, or a dedicated bidirectional TVS such as SMBJ36CA should be selected instead.
What is the standoff voltage (VWM) specification for the TPSMA36AHM3_B/H?
The standoff voltage (VWM) for the TPSMA36AHM3_B/H is 30.8 V, representing the maximum DC or continuous reverse voltage that can be applied without exceeding 1.0 µA reverse leakage current at 25 °C. This allows safe integration into 24 V automotive systems where normal operating voltage remains below VWM while providing margin for ripple and tolerance.
TPSMA36AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA36AHM3_B/H FAQ
1.How can I place an order for TPSMA36AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA36AHM3_B/H 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 TPSMA36AHM3_B/H reliable?
The price and inventory of TPSMA36AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA36AHM3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA36AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA36AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA36AHM3_B/H?
TPSMA36AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA36AHM3_B/H 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 TPSMA36AHM3_B/H?
For technical support, including TPSMA36AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA36AHM3_B/H requirements.
6.How does Aetrix verify that TPSMA36AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA36AHM3_B/H 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 TPSMA36AHM3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA36AHM3_B/H?
All TPSMA36AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA36AHM3_B/H, 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 TPSMA36AHM3_B/H part is unused and in its original packaging.
Return procedure for TPSMA36AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA36AHM3_B/H Tags
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